As of 11:57 AM PDT on September 23, 2026, out of 10 cities in Cowlitz County, WA in our database, 9 cities (90%) have a UV Index reading of Low, while 1 city (10%) have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Cougar, WA with a reading of 2.5.
Over the next 24 hours, the highest UV Index reading in Cowlitz County, WA is expected to be 4.1 in Cougar between 2:00 PM - 3:00 PM PDT today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |