Heat Index Calculator
"Inonzwa se" tembiricha kubva kupisa uye humidity, kushandisa NWS Rothfusz formula.
Zvinyorwa zvinogadziridzwa paunenge uchinyora.
Nezve iyi kalkulator
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.
Zvimwe zvinobvunzwa zvakanyanya
Chii chinonzi heat index?
Heating index, kana kuti tembiricha yakajeka, ndeyekuti sei yakaoma inonzwa kana humidity inobatanidzwa nemhepo tembiricha. High humidity inoderedza kubuda kwemvura, saka muviri unobvisa mvura zvakaoma uye unonzwa wakaoma kupfuura thermometer inoverenga.
Chii formula inoshandisa?
The NWS Rothfusz regression: HI = −42.379 + 2.04901523T + 10.14333127R − 0.22475541TR − … (with T in °F and R in %), plus corrections for very low or very high humidity. It is most accurate at about 80 °F and warmer.
Chii chinonzi mazinga engozi?
Kusvika paku: 80-90 °F ichokwadi, 90-103 °F ichokwadi, 103-124 °F njodzi (kupisa kwechiropa kana kushaya simba) uye 125 °F kana kupfuura njodzi yakaipa ine mukana mukuru wekupisa.
Nei humidity ichiita kuti kupisa kuratidzike kuipa?
Mumhepo ine mvura, yakati yasvika pakuenzana, kutonhora kunoka, saka muviri unopisa zvakanyanya uye 90 °F inoita kunge yakaomarara pa80% humidity kupfuura pa30%.
Nei calculator inoti "hapana kutonhora" pazuva rakaomarara?
Heating index inowanzo shandiswa chete kana tembiricha iri pamusoro pe80 °F (27 °C) uye pamusoro. Pamusoro pezvo, humidity inenge isina kuchinja sei mhepo ichiita, saka chirongwa ichi chinozivisa tembiricha yemhepo yemunharaunda kupfuura iyo yakafanana.
Sei tembiricha index isiri yakafanana neyekupisa kwemhepo?
Vaviri ava vakafanana: heat index inowedzera kutonhora kubva kuhumidity munguva yakaoma, uye wind chill inobvisa kutonhora kubva kuwind munguva yakaoma. Heat index inodiwa tembiricha nehumidity; wind chill inodiwa tembiricha nespeed yemhepo.
Chiyero chekupisa chinofungidzira kuti pane mvura kana kuti hapana?
Inogona kuwanikwa nechiedza chezuva chinoenda kumusoro, uye chinowedzera kusvika pa15 °F (1 °C) kune tembiricha yaunonzwa, saka iyo yazvino tembiricha yaunonzwa kunze kwezuva inogara iri pamusoro peiyo inoratidzwa neiyo calculator.
API — kushandisa iyi kalkulator kubva code
Nhare iyi calculator semahara JSON endpoint - hapana chikuru zvinodiwa. Kutumira nzvimbo mavara pasi separameter query kana JSON. Chii zvachose chaunoisa kunze chinoshandisa default iyo peji iri rakasviba nayo; parameter isiri yechokwadi inonzi 400, uye haisi zero. Tora yakazara API docs →
Endpoint
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);Zviratidzo zvemubvunzo ndezvekufungidzira kwechinangwa chekudzidzisa chete, kwete zvemari, zvehutano kana zvemari.