As of 1:40 PM EDT on August 23, 2026, out of 53 cities in York County, PA in our database, 46 cities (87%) have a UV Index reading of High, while 7 cities (13%) have a UV Index reading of Very High. The city with the highest UV Index reading right now is Stewartstown, PA with a reading of 7.5.
Over the next 24 hours, the highest UV Index reading in York County, PA is expected to be 7.5 in Stewartstown 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 |