{"id":187983,"date":"2023-10-13T15:39:33","date_gmt":"2023-10-13T19:39:33","guid":{"rendered":"https:\/\/antiguanewsroom.com\/?p=187983"},"modified":"2023-10-13T15:56:50","modified_gmt":"2023-10-13T19:56:50","slug":"what-is-the-heat-index","status":"publish","type":"post","link":"https:\/\/antiguanewsroom.com\/what-is-the-heat-index\/","title":{"rendered":"What is the heat index?"},"content":{"rendered":"<div id=\"antig-5413641\" class=\"antig-ecab antig-entity-placement\"><a href=\"https:\/\/discoverflow.co\/web\/antigua\" aria-label=\"ANU CVP Digital Broadband 1200x400_1\"><img src=\"https:\/\/mlavawteztbj.i.optimole.com\/w:1201\/h:401\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2025\/11\/ANU-CVP-Digital-Broadband-1200x400_1-1.jpg\" alt=\"\"  srcset=\"https:\/\/mlavawteztbj.i.optimole.com\/w:1201\/h:401\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2025\/11\/ANU-CVP-Digital-Broadband-1200x400_1-1.jpg 1201w, https:\/\/mlavawteztbj.i.optimole.com\/w:300\/h:100\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2025\/11\/ANU-CVP-Digital-Broadband-1200x400_1-1.jpg 300w, https:\/\/mlavawteztbj.i.optimole.com\/w:1024\/h:342\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2025\/11\/ANU-CVP-Digital-Broadband-1200x400_1-1.jpg 1024w, https:\/\/mlavawteztbj.i.optimole.com\/w:768\/h:256\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2025\/11\/ANU-CVP-Digital-Broadband-1200x400_1-1.jpg 768w\" sizes=\"(max-width: 696px) 100vw, 696px\" width=\"1201\" height=\"401\"   \/><\/a><\/div><div id=\"antig-376602272\" class=\"antig-before-content antig-entity-placement\"><a href=\"https:\/\/www.facebook.com\/medicalbenefitsscheme\" aria-label=\"ce741a73-c70c-446b-af7f-da2abe2b62bb\"><img src=\"https:\/\/mlavawteztbj.i.optimole.com\/w:1200\/h:400\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2024\/12\/ce741a73-c70c-446b-af7f-da2abe2b62bb.jpeg\" alt=\"\"  srcset=\"https:\/\/mlavawteztbj.i.optimole.com\/w:1200\/h:400\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2024\/12\/ce741a73-c70c-446b-af7f-da2abe2b62bb.jpeg 1200w, https:\/\/mlavawteztbj.i.optimole.com\/w:300\/h:100\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2024\/12\/ce741a73-c70c-446b-af7f-da2abe2b62bb.jpeg 300w, https:\/\/mlavawteztbj.i.optimole.com\/w:1024\/h:341\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2024\/12\/ce741a73-c70c-446b-af7f-da2abe2b62bb.jpeg 1024w, https:\/\/mlavawteztbj.i.optimole.com\/w:768\/h:256\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2024\/12\/ce741a73-c70c-446b-af7f-da2abe2b62bb.jpeg 768w\" sizes=\"(max-width: 696px) 100vw, 696px\" width=\"1200\" height=\"400\"   \/><\/a><\/div><p>NOAA &#8211; &#8220;It&#8217;s not the heat, it&#8217;s the humidity&#8221;.\u00a0 That&#8217;s a partly valid phrase you may have heard in the summer, but it&#8217;s actually both.<\/p><div id=\"antig-3326583196\" class=\"antig-content_5 antig-entity-placement\"><a href=\"https:\/\/www.facebook.com\/ablpag\" aria-label=\"level\"><img src=\"https:\/\/mlavawteztbj.i.optimole.com\/w:864\/h:1080\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2026\/04\/level.jpeg\" alt=\"\"  srcset=\"https:\/\/mlavawteztbj.i.optimole.com\/w:864\/h:1080\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2026\/04\/level.jpeg 1080w, https:\/\/mlavawteztbj.i.optimole.com\/w:240\/h:300\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2026\/04\/level.jpeg 240w, https:\/\/mlavawteztbj.i.optimole.com\/w:819\/h:1024\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2026\/04\/level.jpeg 819w, https:\/\/mlavawteztbj.i.optimole.com\/w:768\/h:960\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2026\/04\/level.jpeg 768w\" sizes=\"(max-width: 696px) 100vw, 696px\" width=\"1080\" height=\"1350\"   \/><\/a><\/div>\n<p>The heat index, also known as the apparent temperature, is what the temperature feels like to the human body when relative humidity is combined with the air temperature.<\/p>\n<p>This has important considerations for the human body&#8217;s comfort.<\/p><div id=\"antig-4125240431\" class=\"antig-content_4 antig-entity-placement\"><a href=\"https:\/\/discoverflow.co\/web\/antigua\" aria-label=\"ANU CVP Digital Broadband 1200x400_1\"><img src=\"https:\/\/mlavawteztbj.i.optimole.com\/w:1201\/h:401\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2025\/11\/ANU-CVP-Digital-Broadband-1200x400_1-1.jpg\" alt=\"\"  srcset=\"https:\/\/mlavawteztbj.i.optimole.com\/w:1201\/h:401\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2025\/11\/ANU-CVP-Digital-Broadband-1200x400_1-1.jpg 1201w, https:\/\/mlavawteztbj.i.optimole.com\/w:300\/h:100\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2025\/11\/ANU-CVP-Digital-Broadband-1200x400_1-1.jpg 300w, https:\/\/mlavawteztbj.i.optimole.com\/w:1024\/h:342\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2025\/11\/ANU-CVP-Digital-Broadband-1200x400_1-1.jpg 1024w, https:\/\/mlavawteztbj.i.optimole.com\/w:768\/h:256\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2025\/11\/ANU-CVP-Digital-Broadband-1200x400_1-1.jpg 768w\" sizes=\"(max-width: 696px) 100vw, 696px\" width=\"1201\" height=\"401\"   \/><\/a><\/div><div id=\"antig-578043974\" class=\"antig-content_12 antig-entity-placement\"><a href=\"https:\/\/www.facebook.com\/ablpag\" aria-label=\"IMG_0040\"><img src=\"https:\/\/mlavawteztbj.i.optimole.com\/w:864\/h:1080\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2026\/04\/IMG_0040.jpg\" alt=\"\"  srcset=\"https:\/\/mlavawteztbj.i.optimole.com\/w:864\/h:1080\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2026\/04\/IMG_0040.jpg 1080w, https:\/\/mlavawteztbj.i.optimole.com\/w:240\/h:300\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2026\/04\/IMG_0040.jpg 240w, https:\/\/mlavawteztbj.i.optimole.com\/w:819\/h:1024\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2026\/04\/IMG_0040.jpg 819w, https:\/\/mlavawteztbj.i.optimole.com\/w:768\/h:960\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2026\/04\/IMG_0040.jpg 768w\" sizes=\"(max-width: 696px) 100vw, 696px\" width=\"1080\" height=\"1350\"   \/><\/a><\/div>\n<p>When the body gets too hot, it begins to perspire or sweat to cool itself off.<\/p><div id=\"antig-989572551\" class=\"antig-content antig-entity-placement\"><a href=\"https:\/\/www.facebook.com\/ReggaeInTheParkAntigua\" aria-label=\"lucanio\"><img src=\"https:\/\/mlavawteztbj.i.optimole.com\/w:864\/h:1080\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2020\/12\/lucanio.jpeg\" alt=\"\"  srcset=\"https:\/\/mlavawteztbj.i.optimole.com\/w:864\/h:1080\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2020\/12\/lucanio.jpeg 1080w, https:\/\/mlavawteztbj.i.optimole.com\/w:240\/h:300\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2020\/12\/lucanio.jpeg 240w, https:\/\/mlavawteztbj.i.optimole.com\/w:819\/h:1024\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2020\/12\/lucanio.jpeg 819w, https:\/\/mlavawteztbj.i.optimole.com\/w:768\/h:960\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2020\/12\/lucanio.jpeg 768w\" sizes=\"(max-width: 696px) 100vw, 696px\" width=\"1080\" height=\"1350\"   \/><\/a><\/div>\n<p>If the perspiration is not able to evaporate, the body cannot regulate its temperature.\u00a0 Evaporation is a cooling process.<\/p>\n<p>When perspiration is evaporated off the body, it effectively reduces the body&#8217;s temperature.<\/p><div id=\"antig-1880259186\" class=\"antig-content_2 antig-entity-placement\"><a href=\"https:\/\/www.courts.com\/antigua\/\" aria-label=\"500X500 (1)\"><img src=\"https:\/\/mlavawteztbj.i.optimole.com\/w:500\/h:500\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2026\/03\/500X500-1.jpg\" alt=\"\"  srcset=\"https:\/\/mlavawteztbj.i.optimole.com\/w:500\/h:500\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2026\/03\/500X500-1.jpg 500w, https:\/\/mlavawteztbj.i.optimole.com\/w:300\/h:300\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2026\/03\/500X500-1.jpg 300w, https:\/\/mlavawteztbj.i.optimole.com\/w:150\/h:150\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2026\/03\/500X500-1.jpg 150w\" sizes=\"(max-width: 500px) 100vw, 500px\" width=\"500\" height=\"500\"   \/><\/a><\/div>\n<p>When the atmospheric moisture content (i.e. relative humidity) is high, the rate of evaporation from the body decreases.\u00a0 In other words, the human body feels warmer in humid conditions.<\/p>\n<p>The opposite is true when the relative humidity decreases because the rate of perspiration increases.<\/p><div id=\"antig-1785070445\" class=\"antig-content_3 antig-entity-placement\"><a href=\"https:\/\/chtamarketplace.com\/\" aria-label=\"Social FaceBook Cover Desk_Mobile\"><img src=\"https:\/\/mlavawteztbj.i.optimole.com\/w:1920\/h:711\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2026\/04\/Social-FaceBook-Cover-Desk_Mobile-scaled.jpg\" alt=\"\"  srcset=\"https:\/\/mlavawteztbj.i.optimole.com\/w:1920\/h:711\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2026\/04\/Social-FaceBook-Cover-Desk_Mobile-scaled.jpg 2560w, https:\/\/mlavawteztbj.i.optimole.com\/w:300\/h:111\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2026\/04\/Social-FaceBook-Cover-Desk_Mobile-scaled.jpg 300w, https:\/\/mlavawteztbj.i.optimole.com\/w:1024\/h:379\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2026\/04\/Social-FaceBook-Cover-Desk_Mobile-scaled.jpg 1024w, https:\/\/mlavawteztbj.i.optimole.com\/w:768\/h:285\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2026\/04\/Social-FaceBook-Cover-Desk_Mobile-scaled.jpg 768w, https:\/\/mlavawteztbj.i.optimole.com\/w:1536\/h:569\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2026\/04\/Social-FaceBook-Cover-Desk_Mobile-scaled.jpg 1536w, https:\/\/mlavawteztbj.i.optimole.com\/w:1920\/h:711\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2026\/04\/Social-FaceBook-Cover-Desk_Mobile-scaled.jpg 2048w\" sizes=\"(max-width: 696px) 100vw, 696px\" width=\"2560\" height=\"949\"   \/><\/a><\/div>\n<p>The body actually feels cooler in arid conditions.<\/p><div id=\"antig-4150035855\" class=\"antig-content_6 antig-entity-placement\"><a href=\"https:\/\/discoverflow.co\/web\/antigua\" aria-label=\"ANU CVP Digital Broadband 1200x400_1\"><img src=\"https:\/\/mlavawteztbj.i.optimole.com\/w:1201\/h:401\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2025\/11\/ANU-CVP-Digital-Broadband-1200x400_1-1.jpg\" alt=\"\"  srcset=\"https:\/\/mlavawteztbj.i.optimole.com\/w:1201\/h:401\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2025\/11\/ANU-CVP-Digital-Broadband-1200x400_1-1.jpg 1201w, https:\/\/mlavawteztbj.i.optimole.com\/w:300\/h:100\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2025\/11\/ANU-CVP-Digital-Broadband-1200x400_1-1.jpg 300w, https:\/\/mlavawteztbj.i.optimole.com\/w:1024\/h:342\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2025\/11\/ANU-CVP-Digital-Broadband-1200x400_1-1.jpg 1024w, https:\/\/mlavawteztbj.i.optimole.com\/w:768\/h:256\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2025\/11\/ANU-CVP-Digital-Broadband-1200x400_1-1.jpg 768w\" sizes=\"(max-width: 696px) 100vw, 696px\" width=\"1201\" height=\"401\"   \/><\/a><\/div>\n<p>There is direct relationship between the air temperature and relative humidity and the heat index, meaning as the air temperature and relative humidity increase (decrease), the heat index increases (decreases).<\/p>\n<figure style=\"width: 600px\" class=\"wp-caption alignnone\"><a class=\"ex1\" href=\"https:\/\/www.weather.gov\/images\/safety\/heatindexchart-650.jpg\"><img decoding=\"async\" src=\"https:\/\/www.weather.gov\/images\/safety\/heatindexchart-650.jpg\" alt=\"Heat Index Chart\" width=\"600\" height=\"411\" border=\"1\" \/><\/a><figcaption class=\"wp-caption-text\">Figure 1. Heat index chart.<\/figcaption><\/figure>\n<p>&nbsp;<\/p>\n<p><span data-contrast=\"auto\">In order to determine the heat index using the chart above, you need to know the air temperature and the relative humidity.\u00a0<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335551550&quot;:0,&quot;335551620&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">For example, if the air temperature is 100\u00b0F and the relative humidity is 55%, the heat index will be 124\u00b0F.\u00a0 <\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335551550&quot;:0,&quot;335551620&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">When the relative humidity is low, the apparent temperature can actually be lower than the air temperature.\u00a0 <\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335551550&quot;:0,&quot;335551620&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">For example, if the air temperature is 100\u00b0F and the relative humidity is 15%, the heat index is 96\u00b0F (<\/span><a href=\"http:\/\/www.wpc.ncep.noaa.gov\/html\/heatindex.shtml\"><span data-contrast=\"none\">use this calculator<\/span><\/a><span data-contrast=\"auto\">).\u00a0 <\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335551550&quot;:0,&quot;335551620&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">In the Panhandles, we commonly see hot temperatures during the summer, but the low relative humidity values make it somewhat unusual to see dangerous heat index values (i.e. 103\u00b0F or greater).\u00a0 <\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335551550&quot;:0,&quot;335551620&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">A full heat index chart for a larger range of temperatures and relative humidity values can be found\u00a0<\/span><a href=\"https:\/\/www.noaa.gov\/sites\/default\/files\/2022-05\/heatindex_chart_rh.pdf\"><span data-contrast=\"none\">at this link<\/span><\/a><span data-contrast=\"auto\">.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335551550&quot;:0,&quot;335551620&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p>\n<p>&nbsp;<\/p>\n<p>It surprises many people to learn that the heat index values in the chart above are for shady locations.<\/p>\n<p>If you are exposed to direct sunlight, the heat index value can be increased by up to 15\u00b0F.<\/p>\n<p>As shown in the table below, heat indices meeting or exceeding 103\u00b0F can lead to dangerous heat disorders with prolonged exposure and\/or physical activity in the heat.<\/p>\n<p>&nbsp;<\/p>\n<table style=\"height: 385px\" border=\"0\" width=\"656\" cellspacing=\"1\" cellpadding=\"1\">\n<tbody>\n<tr>\n<td>\n<table border=\"0\" width=\"80%\" cellspacing=\"1\" cellpadding=\"1\" align=\"center\">\n<tbody>\n<tr>\n<td align=\"center\" bgcolor=\"#000000\"><span style=\"color: #ffffff\"><strong>Classification<\/strong><\/span><\/td>\n<td align=\"center\" bgcolor=\"#000000\"><span style=\"color: #ffffff\"><strong>Heat Index<\/strong><\/span><\/td>\n<td align=\"center\" bgcolor=\"#000000\"><span style=\"color: #ffffff\"><strong>Effect on the body<\/strong><\/span><\/td>\n<\/tr>\n<tr>\n<td align=\"center\" bgcolor=\"#ffff99\"><strong>Caution<\/strong><\/td>\n<td align=\"center\" bgcolor=\"#ffff99\"><strong>80\u00b0F &#8211; 90\u00b0F<\/strong><\/td>\n<td align=\"center\" bgcolor=\"#ffff99\"><strong>Fatigue possible with prolonged exposure and\/or physical activity<\/strong><\/td>\n<\/tr>\n<tr>\n<td align=\"center\" bgcolor=\"#fdd015\"><strong>Extreme Caution<\/strong><\/td>\n<td align=\"center\" bgcolor=\"#fdd015\"><strong>90\u00b0F &#8211; 103\u00b0F<\/strong><\/td>\n<td align=\"center\" bgcolor=\"#fdd015\"><strong>Heat stroke, heat cramps, or heat exhaustion possible with prolonged exposure and\/or physical activity<\/strong><\/td>\n<\/tr>\n<tr>\n<td align=\"center\" bgcolor=\"#fb6600\"><strong>Danger<\/strong><\/td>\n<td align=\"center\" bgcolor=\"#fb6600\"><strong>103\u00b0F &#8211; 124\u00b0F<\/strong><\/td>\n<td align=\"center\" bgcolor=\"#fb6600\"><strong>Heat cramps or heat exhaustion likely, and heat stroke possible with prolonged exposure and\/or physical activity<\/strong><\/td>\n<\/tr>\n<tr>\n<td align=\"center\" bgcolor=\"#cc0003\"><strong>Extreme Danger<\/strong><\/td>\n<td align=\"center\" bgcolor=\"#cc0003\"><strong>125\u00b0F or higher<\/strong><\/td>\n<td align=\"center\" bgcolor=\"#cc0003\"><strong>Heat stroke highly likely<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-size: medium\">Use this\u00a0<a class=\"ex1\" href=\"http:\/\/www.wpc.ncep.noaa.gov\/html\/heatindex.shtml\">weather calculator<\/a>\u00a0if you prefer to enter numbers manually instead of reading a chart.\u00a0 <\/span><\/p>\n<p><span style=\"font-size: medium\">If you&#8217;re really mathematically inclined, there is an equation that gives a very close approximation to the heat index.\u00a0 <\/span><\/p>\n<p><span style=\"font-size: medium\">However, this equation was obtained using a multiple regression analysis, and therefore, it has an error of\u00a0\u00b11.3<\/span><span style=\"font-size: medium\">\u00b0<\/span><span style=\"font-size: medium\">F.<\/span><\/p>\n<p>Heat Index = -42.379 + 2.04901523T + 10.14333127R &#8211; 0.22475541TR &#8211; 6.83783 x 10<sup>-3<\/sup>T<sup>2<\/sup>\u00a0&#8211; 5.481717 x 10<sup>-2<\/sup>R<sup>2<\/sup>\u00a0+ 1.22874 x 10<sup>-3<\/sup>T<sup>2<\/sup>R + 8.5282 x 10<sup>-4<\/sup>TR<sup>2<\/sup>\u00a0&#8211; 1.99 x 10<sup>-6<\/sup>T<sup>2<\/sup>R<sup>2<\/sup><\/p>\n<p>T &#8211; air temperature (F)<br \/>\nR &#8211; relative humidity (percentage)<\/p>\n<p>&nbsp;<\/p>\n<p><a href=\"https:\/\/chat.whatsapp.com\/LgZXQuHl9MhCtCAAZEbcrd\"><span data-contrast=\"none\">CLICK HERE TO JOIN OUR WHATSAPP GROUP<\/span><\/a><\/p>\n<p><a href=\"https:\/\/chat.whatsapp.com\/LgZXQuHl9MhCtCAAZEbcrd\"><span data-contrast=\"none\">CLICK HERE TO JOIN OUR WHATSAPP GROUP<\/span><\/a><\/p>\n<p><a href=\"https:\/\/chat.whatsapp.com\/LgZXQuHl9MhCtCAAZEbcrd\"><span data-contrast=\"none\">CLICK HERE TO JOIN OUR WHATSAPP GROUP<\/span><\/a><\/p>\n<p><a href=\"https:\/\/chat.whatsapp.com\/LgZXQuHl9MhCtCAAZEbcrd\"><span data-contrast=\"none\">CLICK HERE TO JOIN OUR WHATSAPP GROUP<\/span><\/a><\/p>\n<div id=\"antig-3701450012\" class=\"antig-in-comments_2 antig-entity-placement\"><a href=\"https:\/\/www.facebook.com\/@hadeedmotorsltd\" aria-label=\"Hadeed_WEB_Banner_MG-2\"><img src=\"https:\/\/mlavawteztbj.i.optimole.com\/w:1000\/h:250\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2024\/12\/Hadeed_WEB_Banner_MG-2.png\" alt=\"\"  srcset=\"https:\/\/mlavawteztbj.i.optimole.com\/w:1000\/h:250\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2024\/12\/Hadeed_WEB_Banner_MG-2.png 1000w, https:\/\/mlavawteztbj.i.optimole.com\/w:300\/h:75\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2024\/12\/Hadeed_WEB_Banner_MG-2.png 300w, https:\/\/mlavawteztbj.i.optimole.com\/w:768\/h:192\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2024\/12\/Hadeed_WEB_Banner_MG-2.png 768w\" sizes=\"(max-width: 696px) 100vw, 696px\" width=\"1000\" height=\"250\"   \/><\/a><\/div>","protected":false},"excerpt":{"rendered":"<p>NOAA &#8211; &#8220;It&#8217;s not the heat, it&#8217;s the humidity&#8221;.\u00a0 That&#8217;s a partly valid phrase you may have heard in the summer, but it&#8217;s actually both. The heat index, also known as the apparent temperature, is what the temperature feels like to the human body when relative humidity is combined with the air temperature. 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