As of 2:26 PM CDT on July 15, 2025, all 12 cities in Cerro Gordo County, IA in our database have a UV Index reading of Very High. The city with the highest UV Index reading right now is Mason City, IA with a reading of 9.2.
Over the next 24 hours, the highest UV Index reading in Cerro Gordo County, IA is expected to be 9.2 in Mason City between 2:00 PM - 3:00 PM CDT today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |