Ikhaya › Isikali se-UV index
Isikali se-UV index
I-UV index ikala ukuthi imisebe ye-ultraviolet yelanga enamandla kangakanani, ngokwesikali esiqala ku-0 futhi singenawo umkhawulo ophezulu. Uma inombolo inkulu, isikhumba namehlo angavikelwe balimala ngokushesha okukhulu. Isikali nemibala kuyafana emhlabeni wonke (Inhlangano Yezempilo Yomhlaba); e-United States isibikezelo sikhishwa yi-EPA ne-National Weather Service.
| Inkomba ye-UV | Izinga |
|---|---|
| 0–2 | Phansi Ingcuphe ephansi yemisebe ye-UV yelanga kumuntu ojwayelekile. Gqoka izibuko zelanga ezinsukwini ezikhanyayo. Uma uvuthuluka kalula, gqoka izingubo futhi usebenzise isikhuthazi selanga se-broad-spectrum SPF 30+. Isanti, amanzi nekhephu kubonisa imisebe ye-UV futhi kukhulise ukuchayeka kwakho. |
| 3–5 | Maphakathi Ingcuphe ephakathi yokuchayeka elangeni ngaphandle kokuvikela. Hlala ethunjeni maphakathi nesikhathi sasemini, lapho ilanga linamandla khona. Gqoka izingubo zokuvikela, ihatshi elinembobo ebanzi nezibuko zelanga ezivimba i-UV, futhi usebenzise isikhuthazi selanga se-broad-spectrum SPF 30+ njalo emahoreni amabili, ngisho nangezinsuku ezinamafu, nangemuva kokugeza noma ukujuluka. |
| 6–7 | Phezulu Ingcuphe ephezulu yokuchayeka elangeni ngaphandle kokuvikela: isikhumba namehlo adinga ukuvikelwa. Nciphisa isikhathi osichitha elangeni maphakathi nesikhathi sasemini, funa ithunzi, futhi ugqoke izingubo zokuvikela, ihatshi elinembobo ebanzi, izibuko zelanga ezivimba i-UV nesikhuthazi selanga se-broad-spectrum SPF 30+, siphindaphindwe njalo emahoreni amabili. |
| 8–10 | Phezulu Kakhulu Ingcuphe ephezulu kakhulu: isikhumba namehlo angalimala futhi avuthuluke kalula ngaphandle kokuvikela. Nciphisa isikhathi osichitha elangeni maphakathi nesikhathi sasemini, funa ithunzi, futhi uvikele ngokugqoka izingubo, ihatshi elinembobo ebanzi, izibuko zelanga ezivimba i-UV nesikhuthazi selanga se-broad-spectrum SPF 30+, siphindaphindwe njalo emahoreni amabili. |
| 11+ | Okugqamile Ingcuphe egqamile: isikhumba namehlo angavuthuluka ngemizuzu ngaphandle kokuvikela. Zama ukugwema ilanga maphakathi nesikhathi sasemini, hlala ethunjeni, futhi usebenzise zonke izindlela zokuvikela: izingubo, ihatshi elinembobo ebanzi, izibuko zelanga ezivimba i-UV nesikhuthazi selanga se-broad-spectrum SPF 30+, siphindaphindwe njalo emahoreni amabili. |
Nini okufanele uzivikele
Izinhlangano zezempilo zixhumana ukuvikela lapho i-UV index ingu-3 noma ngaphezulu. Amakhasi ethu edolobha abonisa amahora aqondile lapho isibikezelo sanamuhla sifinyelela ku-3 khona edolobheni ngalinye.
Umthetho wethunzi: uma ithunzi lakho lifushane kunawe, imisebe ye-UV yelanga inamandla kakhulu — vizikela.
Okushintsha i-UV index
Ubude belanga bubaluleke kakhulu: i-UV inamandla kakhulu maphakathi nansuku zonke, ehlobo naseduze kwe-equator. I-ozone encane ivumela i-UV eningi ukuthi lidlule. Amafu ngokuvamile anciphisa lokhu kodwa angakukhulisa okwesikhashana emaphethelweni awo. Ukuphakama kwendawo kungeza cishe u-10% njalo ngo-1,000 m. Iqhwa libuyisela emuva kufika ku-80% we-UV, isanti nenyanga yolwandle cishe u-15–25%, ngakho ungasha esithunjeni olwandle noma entabeni yeqhwa.