As of 5:44 PM EDT on August 27, 2025, all 10 cities in Cobb County, GA in our database have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Smyrna, GA with a reading of 3.5.
Over the next 24 hours, the highest UV Index reading in Cobb County, GA is expected to be 7.7 in Marietta between 1:00 PM - 2:00 PM EDT tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |