As of 11:40 AM EDT on October 22, 2026, out of 1772 cities in Pennsylvania in our database, 1638 cities (92%) have a UV Index reading of Low, while 134 cities (8%) have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Philadelphia, PA with a reading of 2.5.
Over the next 24 hours, the highest UV Index reading in Pennsylvania is expected to be 4 in Chester between 1:00 PM - 2:00 PM EDT today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |