Arizona, United States · 33.45, -112.07
Today's peak reaches moderate levels. Unprotected skin starts to redden in about 35 min at the worst hour: shade, sunglasses and SPF 30 are enough.
Phoenix sits at 33.5° N, in the northern hemisphere. Today's UV peaks at 4.8: the "moderate" band, which uvlevel.net treats as caution for unprotected skin at the worst hour.
In the Northern Hemisphere at this latitude, UV climbs highest around June and July and eases, without disappearing, around December and January. Even the winter trough here can still cross the moderate band near midday.
Phoenix sits about 335 m above sea level. Thinner air scatters and absorbs less UV on the way down, so uvlevel.net adds roughly 3% to the modelled index here: uv = max(weather, CAMS) × (1 + 0.08 × metres/1000). That correction is already folded into every number on this page.
| Local time | UV index | Risk |
|---|---|---|
| 00:00 | 0 | No danger |
| 01:00 | 0 | No danger |
| 02:00 | 0 | No danger |
| 03:00 | 0 | No danger |
| 04:00 | 0 | No danger |
| 05:00 | 0 | No danger |
| 06:00 | 0 | No danger |
| 07:00 | 0 | No danger |
| 08:00 | 0.7 | No danger |
| 09:00 | 2 | No danger |
| 10:00 | 3.4 | Caution |
| 11:00 | 4.4 | Caution |
| 12:00 | 4.8 | Caution |
| 13:00 | 4.4 | Caution |
| 14:00 | 3.4 | Caution |
| 15:00 | 2 | No danger |
| 16:00 | 0.7 | No danger |
| 17:00 | 0 | No danger |
| 18:00 | 0 | No danger |
| 19:00 | 0 | No danger |
| 20:00 | 0 | No danger |
| 21:00 | 0 | No danger |
| 22:00 | 0 | No danger |
| 23:00 | 0 | No danger |
| Skin type | Time to burn |
|---|---|
| I · always burns, never tans | 28 min |
| II · burns easily | 35 min |
| III · burns sometimes | 48 min |
| IV · rarely burns | 1 h 02 min |
| V · brown skin | 1 h 23 min |
| VI · deeply pigmented | 2 h 18 min |
Yes. UV in Phoenix is forecast to reach 3 or higher from 09:43 to 14:16 local time today, peaking at 4.8 (estimated from solar position, live forecast data was unavailable).
UV is highest in Phoenix at around 12:00 local time today, reaching 4.8 (estimated from solar position, live forecast data was unavailable).
At today's peak of 4.8, fair skin (Fitzpatrick type II) with no sunscreen burns in about 35 min (estimated from solar position, live forecast data was unavailable). Darker skin types take longer. See the table above for every type.
In the Northern Hemisphere at this latitude, UV climbs highest around June and July and eases, without disappearing, around December and January. Even the winter trough here can still cross the moderate band near midday.
Forecasts and elevation from Open-Meteo. The second UV opinion contains modified Copernicus Atmosphere Monitoring Service (CAMS) information; neither the European Commission nor ECMWF is responsible for how it is used here.
uvlevel.net gives general sun-safety guidance, not medical advice. Photosensitising medication, skin conditions, infants and a history of skin cancer all call for stricter limits than shown here.