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Granite City UV Index Today

Day Summary

The UV index in Granite City, United States Flag of United States will reach a high of 8.4 today. This means a veryhigh level of sun exposure. See our tips below to stay safe!

Last checked: 2025-08-01

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

UV index

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.

Disclaimer

* The information on this page about the UV index in Granite City is for educational purposes only. It is not a substitute for professional medical advice. Always consult a doctor for any health concerns.