UV Index in Illinois Today

Choose a city for a live UV reading and hourly forecast. Below you can see the current level in Illinois's largest city, Chicago.

Right now in Chicago

1 UV Index

Low

Low danger from the sun for the average person.

You can safely enjoy being outside. Sunglasses on bright days are enough for most people.

UV peaks at 8 (Very High) around 1 PM CDT.

Hourly UV forecast

0

7PM

0

8PM

0

9PM

0

10PM

0

11PM

0

12AM

0

1AM

0

2AM

0

3AM

0

4AM

0

5AM

0

6AM

1

7AM

1

8AM

3

9AM

5

10AM

6

11AM

8

12PM

8

1PM

8

2PM

6

3PM

4

4PM

2

5PM

1

6PM

Times shown in Chicago local time (CDT). Data from currentuvindex.com, updated hourly.

See the full Chicago forecast →

All Illinois cities

UV Index Chicago Chicago, IL UV Index Aurora Aurora, IL UV Index Rockford Rockford, IL UV Index Joliet Joliet, IL UV Index Naperville Naperville, IL UV Index Springfield Springfield, IL UV Index Peoria Peoria, IL UV Index Elgin Elgin, IL UV Index Waukegan Waukegan, IL UV Index Cicero Cicero, IL UV Index Champaign Champaign, IL UV Index Bloomington Bloomington, IL UV Index Arlington Heights Arlington Heights, IL UV Index Evanston Evanston, IL UV Index Schaumburg Schaumburg, IL UV Index Decatur Decatur, IL UV Index Bolingbrook Bolingbrook, IL UV Index Palatine Palatine, IL UV Index Skokie Skokie, IL UV Index Des Plaines Des Plaines, IL UV Index Orland Park Orland Park, IL UV Index Tinley Park Tinley Park, IL UV Index Oak Lawn Oak Lawn, IL UV Index Berwyn Berwyn, IL UV Index Mount Prospect Mount Prospect, IL UV Index Normal Normal, IL UV Index Wheaton Wheaton, IL UV Index Hoffman Estates Hoffman Estates, IL UV Index Oak Park Oak Park, IL UV Index Downers Grove Downers Grove, IL UV Index Elmhurst Elmhurst, IL UV Index Glenview Glenview, IL UV Index Lombard Lombard, IL UV Index DeKalb DeKalb, IL UV Index Moline Moline, IL UV Index Belleville Belleville, IL UV Index Buffalo Grove Buffalo Grove, IL UV Index Urbana Urbana, IL UV Index Plainfield Plainfield, IL UV Index Bartlett Bartlett, IL UV Index Quincy Quincy, IL UV Index Crystal Lake Crystal Lake, IL UV Index Carol Stream Carol Stream, IL UV Index Streamwood Streamwood, IL UV Index Romeoville Romeoville, IL UV Index Rock Island Rock Island, IL UV Index Hanover Park Hanover Park, IL UV Index Carpentersville Carpentersville, IL UV Index Wheeling Wheeling, IL UV Index Park Ridge Park Ridge, IL UV Index Addison Addison, IL UV Index Calumet City Calumet City, IL

Understanding UV in Illinois

UV levels across Illinois follow the same daily pattern everywhere: low in the early morning, a peak around midday, and a drop toward evening. How high the peak gets depends on the season, the sun's angle, elevation, and cloud cover. Southern and higher-elevation areas tend to see stronger midday UV than northern, lower ones.

Whatever the forecast, the safe habits are the same. Check the live reading for your city, cover up when the index hits 3 or more, and be extra careful with midday sun on high-UV days.

UV guides

What is the UV index? UV index scale and chart Best time to avoid the sun Best UV index for tanning UV index and vitamin D Sunscreen and SPF guide