UV Index
Flagstaff UV Index Today
- Current UV Index0.0
- Cloud Cover00%
- Temperature00.0 ℃
Day Summary
- Max UV Index6.3
- Avg Clouds0%
- Max Temp18.4 ℃
- Peak UV at 1 PM
- Protection Required ☀️
The UV index in Flagstaff, United States 
will reach a high of 6.3 today. This means a high level of sun exposure. See our tips below to stay safe!
Last checked: 2025-10-17
Hourly Forecast Chart
Today's Safety Tips
Be careful! The sun's rays are strong. Try to stay in the shade between 10 a.m. and 4 p.m. Wear a hat, sunglasses, and reapply SPF 30+ sunscreen every 2 hours.
Flagstaff's UV Index
The UV index in Flagstaff is moderate to high during summer months, often ranging between 5 and 8, but it tends to be lower in winter, around 1 to 3. Seasonal patterns in Flagstaff show cold snowy winters with temperatures often below freezing, mild springs, warm summers with occasional thunderstorms, and cool, dry autumns. Compared to the wider region, Flagstaff is cooler and wetter than much of Arizona, which is mostly desert, and its higher elevation gives it more snow than neighboring states like New Mexico and Nevada.
Hourly UV Index Trend
See the UV index hour by hour for Flagstaff. When the level is high, it's smart to find some shade.
- Loading hourly data...