As of 3:32 PM MDT on May 17, 2026, all 1 cities in Grant County, NE in our database have a UV Index reading of High. The city with the highest UV Index reading right now is Hyannis, NE with a reading of 5.6.
Over the next 24 hours, the highest UV Index reading in Grant County, NE is expected to be 5.6 in Hyannis between 3:00 PM - 4:00 PM MDT today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |