Chicago, Illinois

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Live UV Rating in Chicago, Illinois

The current UV rating in Chicago is 0.

Hourly UV Index Forecast for Chicago

Below is an hour‑by‑hour UV index forecast so you can plan safe time outside. UV levels in Chicago typically peak around 1PM. Click any hour to see how the rating changes throughout the day.

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What the numbers mean

• 0‑2Low — enjoy!
• 3‑5 Moderate — SPF30+, hat, sunglasses.
• 6‑7High — seek shade midday.
• 8‑10Very High — extra protection, limit exposure.
• 11+Extreme — avoid sun if possible.

Sun‑Safety Tips for Chicago Residents

• Apply SPF 30+ sunscreen every two hours, even on cloudy Chicago days.
• Seek shade between 10AM and 4PM when the UV index is highest.
• Wear UV‑blocking sunglasses and a wide‑brim hat whenever the UV rating is above 3.
• Lightweight, long‑sleeve UPF clothing adds another layer of protection.
• Re‑check the live UV index for Chicago before extended outdoor activities.