As of 12:12 PM EDT on July 4, 2026, all 14 cities in Calvert County, MD in our database have a UV Index reading of Very High. The city with the highest UV Index reading right now is Chesapeake Ranch Estates, MD with a reading of 8.8.
Over the next 24 hours, the highest UV Index reading in Calvert County, MD is expected to be 9.7 in Chesapeake Ranch Estates between 1:00 PM - 2:00 PM EDT today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |