Cook County, IL: Current UV Index and Hourly Forecast

• USA →
• Illinois →
• Cook County

As of 4:37 PM CST on November 8, 2025, all 119 cities in Cook County, IL in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Calumet City, IL with a reading of 0.2.

Over the next 24 hours, the highest UV Index reading in Cook County, IL is expected to be 2 in Lemont between 12:00 PM - 1:00 PM CST tomorrow.

Search Cities in Cook County, IL

Current UV Index in Cities in Cook County, IL

• Alsip - 0.1
• Arlington Heights - 0
• Barrington - 0
• Barrington Hills - 0
• Bedford Park - 0.1
• Bellwood - 0
• Berkeley - 0
• Berwyn - 0.1
• Blue Island - 0.1
• Bridgeview - 0.1
• Broadview - 0.1
• Brookfield - 0.1
• Burbank - 0.1
• Burnham - 0.1
• Calumet City - 0.2
• Calumet Park - 0.1
• Chicago - 0.1
• Chicago Heights - 0.1
• Chicago Ridge - 0.1
• Cicero - 0.1
• Country Club Hills - 0.1
• Countryside - 0.1
• Crestwood - 0.1
• Des Plaines - 0
• Dixmoor - 0.1
• Dolton - 0.1
• East Hazel Crest - 0.1
• Elk Grove Village - 0
• Elmwood Park - 0.1
• Evanston - 0.1
• Evergreen Park - 0.1
• Flossmoor - 0.1
• Ford Heights - 0.2
• Forest Park - 0.1
• Forest View - 0.1
• Franklin Park - 0
• Glencoe - 0
• Glenview - 0.1
• Glenwood - 0.2
• Golf - 0.1
• Harvey - 0.1
• Harwood Heights - 0.1
• Hazel Crest - 0.1
• Hickory Hills - 0.1
• Hillside - 0.1
• Hodgkins - 0.1
• Hoffman Estates - 0
• Hometown - 0.1
• Homewood - 0.1
• Indian Head Park - 0.1
• Inverness - 0
• Justice - 0.1
• Kenilworth - 0.1
• La Grange - 0.1
• La Grange Park - 0.1
• Lansing - 0.2
• Lemont - 0.1
• Lincolnwood - 0.1
• Lynwood - 0.2
• Lyons - 0.1
• Markham - 0.1
• Matteson - 0.1
• Maywood - 0.1
• McCook - 0.1
• Melrose Park - 0.1
• Merrionette Park - 0.1
• Midlothian - 0.1
• Morton Grove - 0.1
• Mount Prospect - 0
• Niles - 0.1
• Norridge - 0.1
• North Riverside - 0.1
• Northbrook - 0
• Northfield - 0.1
• Northlake - 0
• Oak Forest - 0.1
• Oak Lawn - 0.1
• Oak Park - 0.1
• Olympia Fields - 0.1
• Orland Hills - 0.1
• Orland Park - 0.1
• Palatine - 0
• Palos Heights - 0.1
• Palos Hills - 0.1
• Palos Park - 0.1
• Park Forest - 0.1
• Park Ridge - 0.1
• Phoenix - 0.1
• Posen - 0.1
• Prospect Heights - 0
• Richton Park - 0.1
• River Forest - 0.1
• River Grove - 0.1
• Riverdale - 0.1
• Riverside - 0.1
• Robbins - 0.1
• Rolling Meadows - 0
• Rosemont - 0.1
• Sauk Village - 0.2
• Schaumburg - 0
• Schiller Park - 0.1
• Skokie - 0.1
• South Barrington - 0
• South Chicago Heights - 0.1
• South Holland - 0.2
• Steger - 0.2
• Stickney - 0.1
• Stone Park - 0
• Streamwood - 0
• Summit - 0.1
• Thornton - 0.2
• Tinley Park - 0.1
• Westchester - 0.1
• Western Springs - 0.1
• Wheeling - 0
• Willow Springs - 0.1
• Wilmette - 0.1
• Winnetka - 0.1
• Worth - 0.1