As of 3:22 PM CDT on June 18, 2026, out of 8 cities in Grant Parish, LA in our database, 7 cities (88%) have a UV Index reading of Very High, while 1 city (13%) have a UV Index reading of High. The city with the highest UV Index reading right now is Montgomery, LA with a reading of 9.
Over the next 24 hours, the highest UV Index reading in Grant Parish, LA is expected to be 10.7 in Colfax between 2:00 PM - 3:00 PM CDT tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |