As of 1:05 PM MDT on September 15, 2025, out of 13 cities in Madison County, MT in our database, 9 cities (69%) have a UV Index reading of Moderate, while 4 cities (31%) have a UV Index reading of Low. The city with the highest UV Index reading right now is Silver Star, MT with a reading of 5.
Over the next 24 hours, the highest UV Index reading in Madison County, MT is expected to be 5.2 in Ennis between 2:00 PM - 3:00 PM MDT today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |