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Chicago Weather News
Friday, July 3
Live Weather

Chicago
Weather Now.

UV peaks at 6 today (high). Reduce time in the sun 10am-4pm. SPF 50+.

7-day UV outlook

  • Today6
    High
  • Saturday8
    Very high
  • Sunday6
    High
  • Monday8
    Very high
  • Tuesday8
    Very high
  • Wednesday8
    Very high
  • Thursday6
    High

Sun safety in Chicago

Chicago sits at latitude 33°S with famously intense sun. UV can reach extreme levels between November and February, often before midday. The American Cancer Society recommends sun protection whenever the UV index is 3 or above, and Chicago typically exceeds 3 for around 10 hours a day in summer.

UV categories

  • Low (up to 2): Sun protection not usually needed.
  • Moderate (up to 5): Wear sunscreen, a hat and sunglasses.
  • High (up to 7): Reduce time in the sun 10am-4pm. SPF 50+.
  • Very high (up to 10): Avoid the midday sun. Full sun protection.
  • Extreme (11+): Stay indoors during peak UV hours.