Granite City UV Index Today
- Current UV Index0.0
- Cloud Cover00%
- Temperature00.0 ℃
Day Summary
- Max UV Index8.3
- Avg Clouds14%
- Max Temp28.8 ℃
- Peak UV at 1 PM
- Protection Required ☀️
The UV index in Granite City, United States 
will reach a high of 8.3 today. This means a veryhigh level of sun exposure. See our tips below to stay safe!
Last checked: 2025-08-21
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.
Granite City's UV Index
Granite City, United States, has a UV index that varies throughout the year, typically reaching higher levels in the summer months, often around 7 to 9, indicating strong sunlight during these periods.
Weather Seasons
Seasonal patterns include warm to hot summers with temperatures often in the 80s and 90s Fahrenheit, mild to cool springs and falls, and cold winters with temperatures often below freezing and occasional snowfall.
Granite City's Climate
Compared to the wider Midwest region and neighboring states like Illinois and Missouri, Granite City's weather is fairly typical with its mix of hot summers and cold winters, though it may experience slightly more humidity due to its proximity to the Mississippi River.
Hourly UV Index Trend
See the UV index hour by hour for Granite City. When the level is high, it's smart to find some shade.
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