As of 3:05 PM EDT on August 13, 2026, out of 61 cities in Montgomery County, PA in our database, 33 cities (54%) have a UV Index reading of Moderate, while 28 cities (46%) have a UV Index reading of Low. The city with the highest UV Index reading right now is Pottstown, PA with a reading of 4.5.
Over the next 24 hours, the highest UV Index reading in Montgomery County, PA is expected to be 8.1 in King of Prussia between 1:00 PM - 2:00 PM EDT tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |