As of 8:58 AM CDT on March 21, 2026, all 13 cities in Humboldt County, IA in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Humboldt, IA with a reading of 0.2.
Over the next 24 hours, the highest UV Index reading in Humboldt County, IA is expected to be 5.6 in Gilmore 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 |