Pennsylvania, United States · 39.95, -75.17
Today's peak is high. Unprotected skin burns in about 26 min at the worst hour: stay in the shade around midday.
About the UV index in Philadelphia
Philadelphia sits at 40.0° N, in the northern hemisphere. Today's UV peaks at 6.5: the "high" band, which uvlevel.net treats as danger for unprotected skin at the worst hour.
Philadelphia sees the widest UV swing of the year of any latitude band: a sharp summer peak around June and July, and a winter trough around December and January where midday UV can sit near zero for weeks at a time.
Hour by hour today
| 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 | 0.3 | No danger |
| 08:00 | 0.9 | No danger |
| 09:00 | 2.1 | No danger |
| 10:00 | 3.2 | Caution |
| 11:00 | 4.4 | Caution |
| 12:00 | 5 | Caution |
| 13:00 | 6.5 | Danger |
| 14:00 | 6.5 | Danger |
| 15:00 | 5.6 | Caution |
| 16:00 | 5.4 | Caution |
| 17:00 | 2.1 | No danger |
| 18:00 | 2.2 | No danger |
| 19:00 | 0.9 | No danger |
| 20:00 | 0.2 | 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 | 21 min |
| II · burns easily | 26 min |
| III · burns sometimes | 36 min |
| IV · rarely burns | 46 min |
| V · brown skin | 1 h 02 min |
| VI · deeply pigmented | 1 h 43 min |
Next 7 days · daily peak
Frequently asked
Is the UV index dangerous in Philadelphia today?
Yes. UV in Philadelphia is forecast to reach 3 or higher from 09:51 to 16:43 local time today, peaking at 6.5.
What time is UV highest in Philadelphia?
UV is highest in Philadelphia at around 13:00 local time today, reaching 6.5.
How long can unprotected skin stay out in Philadelphia today?
At today's peak of 6.5, fair skin (Fitzpatrick type II) with no sunscreen burns in about 26 min. Darker skin types take longer. See the table above for every type.
Does the UV index in Philadelphia change with the seasons?
Philadelphia sees the widest UV swing of the year of any latitude band: a sharp summer peak around June and July, and a winter trough around December and January where midday UV can sit near zero for weeks at a time.
Nearby cities
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.