Calculator
"N'anya dị ka" okpomọkụ site na okpomọkụ na okpomọkụ, na-eji NWS Rothfuss formula.
Nhọrọ ndị ahụ ga-akpụzi mgbe ị na-etipụta.
N'ihe banyere calculator a
The heat index, or apparent temperature, is how hot it really feels when humidity is combined with the air temperature, and this heat index calculator computes it from those two inputs. The body cools itself by evaporating sweat, but humid air is already close to saturated so sweat evaporates slowly, the cooling falters, and it feels hotter than the thermometer says. The tool uses the U.S. National Weather Service Rothfusz regression, a multi-term fit of temperature and relative humidity, together with its standard low- and high-humidity corrections.
As a worked example, 90 °F air at 60% relative humidity carries a heat index of about 100 °F — ten degrees hotter than the reading — and pushing the humidity to 80% drives it past 110 °F. The calculator returns the feels-like temperature, how much hotter that is than the air, and a humidity table so you can see how quickly the danger rises as the air grows muggier at a fixed temperature.
The regression is most accurate around 80 °F (27 °C) and above with meaningful humidity; below about 80 °F it reports no heat stress because humidity has little effect on comfort in cool air. It also grades the reading into the NWS danger bands — caution, extreme caution, danger and extreme danger — so a heat index above 103 °F signals a real risk of heat cramps or exhaustion, and above 125 °F a high risk of heat stroke, which is vital for planning outdoor work, sport and travel in hot weather.
Ajụjụ ndị a na-ajụkarị
Gịnị bụ ndepụta okpomọkụ?
Nhazi okpomọkụ, mọọbụ okpomọkụ dị n'anya, bụ otu o si dị ọkụ mgbe ọ na-ejikọta okpomọkụ dị n'ụdị na okpomọkụ nke ikuku. Ọnụ okpomọkụ dị elu na-eme ka ọnwụ nke mmiri dị n'ụdị, yabụ ahụ na-ewepụ okpomọkụ n'ụzọ dị mfe ma na-egosipụta okpomọkụ karịa ihe okpomọkụ na-agụ.
Kedu ihe n'ime ihe ndị a na-eji?
NWS Rothfuss regression: HI = −42.379 + 2.04901523T + 10.14333127R − 0.22475541TR −... (na T na °F na R na %), nakwa ngbanwe maka n'okpuru ma ọ bụ elu n'elu okpomọkụ. Ọ bụ nke kasị n'ozuzu ya na 80 °F na n'elu okpomọkụ.
Gịnị bụ ihe n'eme n'ihe ize ndụ?
N'ụzọ dị mfe: 80-90 ° F bụ nlebara anya, 90-103 ° F bụ nlebara anya dị ukwuu, 103-124 ° F bụ ihe egwu (ụdị ọkụ ma ọ bụ nrụgide na-eme) na 125 ° F ma ọ bụ n'elu ihe egwu dị ukwuu na-emetụta oke okpomọkụ.
Gịnị mere mmiri ozuzo ji mee ka okpomọkụ dị njọ?
N'ime ikuku na-ekpo ọkụ, nke nọ n'ebe dị nso na satịlaịtị, ịna-ekpo ọkụ na-akwụsị, ya mere ahụ na-ewepụ ọkụ n'ụzọ na-adịghị mma na 90 °F dị ka ọ dị n'ụdị ọkụ dị elu na 80% nke okpomọkụ karịa na 30%.
Gịnị mere kaadị akwụmụgwọ ji sị "enweghị ike ịna-ebuli elu" n'ụbọchị okpomọkụ?
Nhazi nke okpomọkụ akọwapụtara maka ọnọdụ okpomọkụ - dịka 80 °F (27 °C) na elu. N'okpuru nke ahụ, okpomọkụ na-agbanwe agbanwe ka ọbụna ikuku na-ahụ, yabụ toolbar na-egosipụta okpomọkụ ikuku n'ozuzu ya kama nke a na-ahụ anya.
Olee otú okpomọkụ index dị iche na ikuku chill?
Ha bụ ngbanwe ndị na-emetụtara: ike-indesịta na-egbakwunye ike-egosipụtara site n'osisi n'oge okpomọkụ, ebe ọ bụ na ọnwụ ikuku na-ewepụ ike-egosipụtara site n'osisi n'oge okpomọkụ. Ike-indesịta chọrọ okpomọkụ na osisi; ọnwụ ikuku chọrọ okpomọkụ na ọsọ ikuku.
Does the heat index assume shade or sun?
E jikwa ya maka ọ̀chà. Ihu anyanwụ na-eweta ihe dịka 15 °F n'ụdị okpomọkụ a na-ahụ, ya mere, uru a na-ahụ-dị ka ọ̀chà n'ime ụlọ n'ụdị anyanwụ zuru ezu dị elu karịa fíìlụ̀ a na-eziga n'ọ̀chà a.
API — jiri kaadị a site na kóòdù
Kpọọ kalkulata a dịka ebe ngwụcha JSON n'efu - enweghị kii achọrọ. Ziga valiu ebe ahụ n'okpuru dịka paramita ajụjụ mọọbụ JSON. Ihe ọbụla ị na-ewepụ na-eji dìfọ́ọ̀ltụ̀ nke a na-edebe ihuakwụkwọ a na ya; parameter a na-amaghị bụ 400, ọ dịghị sẽọ̀rọ̀. Gụọ ngwe ndị ahụ niile →
Ebemkpofuozi
GET https://calculator.free/api/v1/heat-index/curl
curl "https://calculator.free/api/v1/heat-index/?units=imperial&temp=90&humidity=60"JavaScript fetch()
const r = await fetch(
"https://calculator.free/api/v1/heat-index/?" + new URLSearchParams({
"units": "imperial",
"temp": "90",
"humidity": "60"
}));
const data = await r.json();
console.log(data.results);Ihe a na-ahụta bụ n'ihi nlekọta n'ozuzu ya, ọ bụghị nlekọta ego, ọgwụ ma ọ bụ nlekọta ego.