As of 12:44 AM AKDT on October 4, 2025, all 3 cities in Petersburg Borough, AK in our database have a UV Index reading of 0, indicating no radiation from the sun.
Over the next 24 hours, the highest UV Index reading in Petersburg Borough, AK is expected to be 2.1 in Kupreanof between 1:00 PM - 2:00 PM AKDT today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |