As of 11:18 PM CST on December 14, 2025, all 2 cities in Cook County, MN 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 Cook County, MN is expected to be 0.9 in Grand Marais between 12:00 PM - 1:00 PM CST tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |