Te tātaitai taupū wera
Ko te "whakaahua" te pāmahana mai i te wera me te mārō, mā te whakamahi i te tātai NWS Rothfuss.
Ka whakahōutia ngā hua i te wā e tātuhi ana.
Mo tēnei tātaitai
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.
Ko nga pātai e pā ana
He aha te taupū wera?
Ko te taupū wera, te pāmahana rānei, he wera rawa te āhua o te wera i te wā e pahekotia ai te mārō pātahi ki te pāmahana o te hau. Ko te mārō tiketike e whakaiti ana i te whakawāteatanga o te wai, kia iti ai te wera i te tinana, ā, ka wera ake te āhua i te mātauranga o te whakamāmā.
He tātai pēnei tēnei e whakamahia ai?
Ko te NWS Rothfuss regression: HI = −42.379 + 2.04901523T + 10.14333127R − 0.22475541TR −... (me T i °F me R i te %), tae atu ki ngā whakarerekētanga mō te waikawa iti rawa, tino tiketike rānei. He tino tika tonu i te tata ki te 80 °F me te wera ake.
He aha te tikanga o nga taumata mōrearea?
Tata tonu ki: 80–90 °F he mātauranga, 90–103 °F he mātauranga tino nui, 103–124 °F he mōrearea (he pūhihi wera, he whakawhanake rānei) me te 125 °F, i runga ake rānei i te mōrearea tino nui me te mōrearea o te wera.
He aha te whakarewa i te wera i te wera?
I roto i te hau mārō, e tata ana ki te whakatōpūtanga, ka pōturi te whakatōpūtanga, nā reira ka pōturi te tinana i te wera, ā, ko te 90 °F ōrite e wera ake ana i te 80% o te mārō i te 30%.
He aha te kī a te tātaitai "kore te uaua wera" i tētahi rā wera?
E tautuhia ana te taupū wera mō ngā āhuatanga wera anake — tata ki te 80 °F (27 °C) me runga ake. I raro i taua, kāore te mārō e huri i te āhua o te hau, nā reira ka pūrongo te utauta i te mahana hau noa, kaua i te mea e kitea ana.
He pēhea te rerekētanga o te taupū wera i te wera o te hau?
He whakarerekētanga ā-pātahi rātau: ko te taupū wera e tāpiri ana i te wera mai i te wera i te wā wera, i te wā e tangohia ana te wera mai i te hau i te wā mātao.
E whakaaro ana te taupū wera i te mārama, i te rā rānei?
Ka tatautia mō te mārama, ka taea e te mārama hāngai te tāpiri i te 15 °F ki te pāmahana e kitea ana, kia nui ake ai te uara tūturu e kitea ana i waho i te rā, i te tau e hoki ana tēnei tātaitai.
API — whakamahi tēnei tātaitai mai i te waehere
E kī ana tēnei tātaitai hei wāhi mutunga kore JSON - kāore he kī e hiahiatia ana. Ka tukuna ngā uara āpure i raro nei hei tohutoro pātai, JSON rānei. Anything you omit uses the same default this page is pre-filled with; an unknown parameter is a 400, never a silent zero. Ka pānui te papatono API katoa →
Whakamutunga
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);Ko ngā hua he whakataunga mō te tohutohu ahuwhānui anake, ehara i te tohutohu moni, rongoā, tāke rānei.