As of 10:49 PM EST on December 21, 2025, all 8 cities in St. Joseph County, MI 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 St. Joseph County, MI is expected to be 1.3 in Burr Oak between 1:00 PM - 2:00 PM EST tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |