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Tūloto UV
The UV index measures how strong the sun's burning ultraviolet rays are, on a scale starting at 0 with no upper limit. The higher the number, the faster unprotected skin and eyes are damaged. The scale and colors are the same worldwide (World Health Organization); in the United States the forecast is issued by the EPA and the National Weather Service.
| Tukuhinga UV | Tuʻunga |
|---|---|
| 0–2 | Maʻolalo Siʻi ʻa e hia mei he ngaahi hohaʻa UV ʻo e laa ki he kakai fakatatau. Fakaʻaongaʻi ʻa e ngaahi sioʻa ʻi he ngaahi ʻaho mālamalama. Kapau ʻoku faingofua hoʻo tō, maluʻi hoʻo sino pea fakaʻaongaʻi ʻa e sunscreen SPF 30+ broad-spectrum. ʻOku fakalahi ʻe he oneone, vai mo e ʻaho ʻa e UV pea fakalahi hoʻo fakaʻaongaʻi. |
| 3–5 | Lotoloto Hia lotoloto mei he fakaʻaongaʻi ʻe lava ʻe he laa. Nofo ʻi he malumalu ʻi he taimi ʻoku mālohi taha ai ʻa e laa. Fakaʻaongaʻi ʻa e ngaahi kofa malu, hatā lahi mo e ngaahi sioʻa UV-blocking, pea fakaʻaongaʻi ʻa e sunscreen SPF 30+ broad-spectrum fakatatau ʻi he houa ʻe 2, tatau ai pē pe kapau ʻoku ʻao, pea hili ʻa e ʻaukai pe susu. |
| 6–7 | Māʻolunga Hia māʻolunga mei he fakaʻaongaʻi ʻe lava ʻe he laa: ʻoku fiemaʻu ʻe he sino mo e mata ʻa e malu. Fakasiʻisiʻi ʻa e taimi ʻi he laa ʻi he lotoloto ʻo e ʻaho, kumi ha malumalu, pea fakaʻaongaʻi ʻa e ngaahi kofa malu, hatā lahi, ngaahi sioʻa UV-blocking mo e sunscreen SPF 30+ broad-spectrum, fakafoki fakatatau ʻi he houa ʻe 2. |
| 8–10 | Māʻolunga lahi Hia māʻolunga lahi: ʻe lava ke maumau mo tō vave ʻa e sino mo e mata ʻoku ʻikai malu. Fakasiʻisiʻi fakalahi ʻa e taimi ʻi he laa ʻi he lotoloto ʻo e ʻaho, kumi ha malumalu, pea maluʻi hoʻo sino ʻaki ha kofa, hatā lahi, ngaahi sioʻa UV-blocking mo e sunscreen SPF 30+ broad-spectrum, fakafoki fakatatau ʻi he houa ʻe 2. |
| 11+ | Māʻolunga lahi ange Hia māʻolunga lahi ange: ʻe lava ke tō vave ʻa e sino mo e mata ʻoku ʻikai malu. Feinga ke ʻikai nofo ʻi he laa ʻi he lotoloto ʻo e ʻaho, nofo ʻi he malumalu, pea fakaʻaongaʻi ʻa e malu kotoa pē: kofa, hatā lahi, ngaahi sioʻa UV-blocking mo e sunscreen SPF 30+ broad-spectrum, fakafoki fakatatau ʻi he houa ʻe 2. |
Ko e taimi ke maluʻi ai koe
Ko e ngaahi aʻahi ki he moʻui ʻoku nau ʻoatu fakakaukau ke maluʻi koe ʻi he taimi ʻoku lahi ange ʻi he 3 ʻa e fika UV. Ko e ngaahi peesi ʻo e kolo ʻoku fakahā ʻa e ngaahi houa totonu ʻoku aʻu ai ʻa e fakatātā ʻo e ʻaho ni ki he 3 ʻi he kolo kotoa.
Ko e tuʻutuʻuni ki he hala: kapau ʻoku siʻi ange ho hala ʻiate koe, ʻoku mālohi taha ʻa e UV ʻo e laʻa — maluʻi koe.
Ko e ngaahi meʻa ʻoku fakamāʻopoopo ʻi he UV index
The sun's height matters most: UV is strongest around solar noon, in summer and closer to the equator. Thin ozone lets more UV through. Clouds usually lower it but can raise it briefly at their edges. Altitude adds roughly 10% per 1,000 m. Snow reflects up to 80% of UV, sand and sea foam about 15–25%, so you can burn in the shade on a beach or ski slope.