Te tātaitai Wind Chill
He pēhea te mātao e kitea ana i te pāmahana āhuarangi me te tere hau, mā te whakamahi i te tātai NWS.
Ka whakahōutia ngā hua i te wā e tātuhi ana.
Mo tēnei tātaitai
Wind chill is how cold the air actually feels on exposed skin once moving air is factored in, because wind strips away the thin insulating layer of warmed air around the body and speeds up heat loss. This wind chill calculator uses the current U.S. National Weather Service formula (adopted in 2001): in imperial units, WC(°F) = 35.74 + 0.6215T − 35.75V^0.16 + 0.4275T·V^0.16, with T the air temperature in °F and V the wind speed in mph; the metric version, WC(°C) = 13.12 + 0.6215T − 11.37V^0.16 + 0.3965T·V^0.16, uses °C and km/h.
As a worked example, an air temperature of 20 °F with a 15 mph wind feels like about 6 °F — roughly 14 degrees colder than the thermometer reads. Raise the wind and the chill deepens, but with diminishing returns, since the V^0.16 term flattens out at high wind speeds. The calculator shows the feels-like temperature, how much colder that is than the actual air, and a table of wind chills across a range of wind speeds so you can see the trend.
The formula is only defined for cold, breezy conditions — at or below 50 °F (10 °C) and winds above about 3 mph (5 km/h) — so above those the "feels like" simply equals the air temperature. Beyond comfort, wind chill matters because it governs how fast exposed skin can freeze: the tool flags frostbite risk, which becomes serious once the wind chill drops below about −18 °C (0 °F) and can freeze skin in under 30 minutes in extreme cold.
Ko nga pātai e pā ana
He aha te tātai o te hau?
Ko te tātai NWS (2001) i roto i ngā wae ā-rohe ko te WC = 35.74 + 0.6215T − 35.75V^0.16 + 0.4275T·V^0.16, me T i °F me V i mph. Ka tauiratia e ia te ngaronga wera mai i te kiri poapoa i te wā e whakarere ana te hau i te apa wera iti i te tinana.
He aha te wā e hoatu ana te hau?
E tautuhia ana mō ngā pāmahana i raro rānei i te 50 °F (10 °C) me ngā hau i runga ake i te 3 mph (5 km/h). I runga ake i ēnei, he iti noa te pānga whakamārōrō o te hau, ā, he ōrite te "whakaaro" ki te pāmahana āhuarangi.
He tere rawa te puta o te hukapapa?
Ki te hipa te hau ki raro i te -18 °C (0 °F) ka noho he mōrearea te hukapapa, ā, ki raro i te -28 °C (-19 °F) ka taea te whakamātau i te kiri i roto i te 30 min, iti iho rānei - i te wā o te hau nui ake.
E pā ana te mātao hau ki ngā ahanoa, ki te tangata rānei?
Ko te mātaotanga o te hau e ine ana i te tere o te ngaronga o te wera i te tinana wera, nā reira ka wera ake te tangata me te kararehe, engari kāore e taea te whakamātautau i tētahi ahanoa pēnei i te waka, i te pū wai rānei i raro i te pāmahana o te hau tūturu.
He aha te take kāore e haere tonu ana te hau ki te whakamātautau i te mātaotanga?
Ka whakamahia e te tātai te tere hau ki te hiko 0.16, e piki ana i te tuatahi, kātahi ka whakatata. Ko te haere mai i te 5 ki te 15 mph ka whakaiti te pāmahana āhua āhua, engari ko te haere mai i te 40 ki te 50 mph ka whakarerekētia noa iho.
Ka mahi te tātaitai i roto i ngā °F/mph me ngā °C/km/h?
Hei. Ko te kōwhiringa imperial hei tāuru i te °F me te mph, hei tauine rānei mō te °C me te km/h, ā, ka hoatu te tātai NWS e ōrite ana. Ka whakatauria ngā taumata hukapapa i runga i te tauine tauine i roto kia ōrite ai ngā pūnaha wae e rua.
I te pēhea te pāmahana ka whakamutu te wera i te hau?
I runga ake i te 50 °F (10 °C), ina iti iho rānei te hau i te 3 mph (5 km/h), he iti te pānga mārō o te hau, ā, he ōrite te pāmahana me te pāmahana ātea - nō reira ka hoki te tātaitai ki tētahi tuhipoka, kaua ko tētahi tau iti iho i roto i aua āhuatanga.
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/wind-chill/curl
curl "https://calculator.free/api/v1/wind-chill/?units=imperial&temp=20&wind=15"JavaScript fetch()
const r = await fetch(
"https://calculator.free/api/v1/wind-chill/?" + new URLSearchParams({
"units": "imperial",
"temp": "20",
"wind": "15"
}));
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.