UV Index
Tucson UV Index Today
- Current UV Index0.0
- Cloud Cover00%
- Temperature00.0 ℃
Day Summary
- Max UV Index9.9
- Avg Clouds68%
- Max Temp39.1 ℃
- Peak UV at 1 PM
- Protection Required ☀️
The UV index in Tucson, United States 
will reach a high of 9.9 today. This means a veryhigh level of sun exposure. See our tips below to stay safe!
Last checked: 2025-08-18
Hourly Forecast Chart
Today's Safety Tips
The risk is very high. It's best to stay out of the sun between 10 a.m. and 4 p.m. If you must be outside, wear protective clothing and apply sunscreen often.
Tucson's UV Index
Tucson's UV index is very high, especially in summer months, often reaching levels above 10, which means strong UV radiation from the sun. The UV index peaks around midday. Tucson experiences hot summers with temperatures frequently above 100°F (38°C). Winters are mild and dry with cooler temperatures. The region has a monsoon season from June to September, bringing sudden heavy rains and thunderstorms. Tucson is located in the Sonoran Desert, so it is much drier than many other parts of the United States. Compared to nearby Phoenix, Tucson is slightly cooler and receives less rainfall. Its desert climate is hotter and sunnier than neighboring states like New Mexico and Arizona's higher elevation areas.
Hourly UV Index Trend
See the UV index hour by hour for Tucson. When the level is high, it's smart to find some shade.
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