UV Index Today in Chicago, Illinois (IL)

Saturday, August 29, 2026 -11:46 AM CDT (GMT-5)

The UV Index in Chicago, Illinois (IL) right now is 4.8. This reading was last updated at 11:00 AM CDT, about 46 minutes ago. The UV Index at12:00 PM CDT, in about 13 minutes from now, is expected to be 5.3.

The maximum UV Index today in Chicago is expected to be 5.8 at 1:00 PM CDT,1 hour and 13 minutes from now. The maximum UV Index tomorrow is expected to be 7 at 1:00 PM CDT.

Data Source: National Oceanic and Atmospheric Administration (NOAA)

Today

August 29
5.8
1:00 PM CDT
High

Tomorrow

August 30
7
1:00 PM CDT
High

UV Index Today Hourly

August 29

Weather models predict UV Index 5.8 for Chicago, Illinois (IL) today, peaking near 1:00 PM CDT - High risk level.

02468106 AM7 AM8 AM9 AM10 AM11 AM12 PM1 PM2 PM3 PM4 PM5 PM6 PM7 PMCentral Daylight Time (CDT, GMT-5)Now: 11:46 AM00.10.71.834.85.35.85.11.80.50.50.40
Data Source: National Oceanic and Atmospheric Administration (NOAA)

UV Index Tomorrow Hourly

August 30

The UV Index for Chicago, Illinois (IL) peaks at 7 tomorrow at 1:00 PM CDT, classified as High risk.

02468106 AM7 AM8 AM9 AM10 AM11 AM12 PM1 PM2 PM3 PM4 PM5 PM6 PM7 PMCentral Daylight Time (CDT, GMT-5)00.10.51.52.35.56.876.24.43.11.50.50
Data Source: National Oceanic and Atmospheric Administration (NOAA)

5 Day UV Index Forecast

August 28, 2026

TimeUV IndexRisk
12:00 AM0
Low
1:00 AM0
Low
2:00 AM0
Low
3:00 AM0
Low
4:00 AM0
Low
5:00 AM0
Low
6:00 AM0
Low
7:00 AM0.2
Low
8:00 AM0.7
Low
9:00 AM1.9
Low
10:00 AM3.6
Moderate
11:00 AM5.4
Moderate
12:00 PM6.7
High
1:00 PM7
High
2:00 PM6.3
High
3:00 PM4.9
Moderate
4:00 PM3.1
Moderate
5:00 PM1.5
Low
6:00 PM0.5
Low
7:00 PM0
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

August 29, 2026

TimeUV IndexRisk
12:00 AM0
Low
1:00 AM0
Low
2:00 AM0
Low
3:00 AM0
Low
4:00 AM0
Low
5:00 AM0
Low
6:00 AM0
Low
7:00 AM0.1
Low
8:00 AM0.7
Low
9:00 AM1.8
Low
10:00 AM3
Moderate
11:00 AM4.8
Moderate
12:00 PM5.3
Moderate
1:00 PM5.8
High
2:00 PM5.1
Moderate
3:00 PM1.8
Low
4:00 PM0.5
Low
5:00 PM0.5
Low
6:00 PM0.4
Low
7:00 PM0
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

August 30, 2026

TimeUV IndexRisk
12:00 AM0
Low
1:00 AM0
Low
2:00 AM0
Low
3:00 AM0
Low
4:00 AM0
Low
5:00 AM0
Low
6:00 AM0
Low
7:00 AM0.1
Low
8:00 AM0.5
Low
9:00 AM1.5
Low
10:00 AM2.3
Low
11:00 AM5.5
High
12:00 PM6.8
High
1:00 PM7
High
2:00 PM6.2
High
3:00 PM4.4
Moderate
4:00 PM3.1
Moderate
5:00 PM1.5
Low
6:00 PM0.5
Low
7:00 PM0
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

August 31, 2026

TimeUV IndexRisk
12:00 AM0
Low
1:00 AM0
Low
2:00 AM0
Low
3:00 AM0
Low
4:00 AM0
Low
5:00 AM0
Low
6:00 AM0
Low
7:00 AM0.1
Low
8:00 AM0.4
Low
9:00 AM1.3
Low
10:00 AM3.6
Moderate
11:00 AM4.7
Moderate
12:00 PM6.4
High
1:00 PM3.1
Moderate
2:00 PM6.6
High
3:00 PM5.2
Moderate
4:00 PM3.2
Moderate
5:00 PM1.4
Low
6:00 PM0.4
Low
7:00 PM0
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

September 1, 2026

TimeUV IndexRisk
12:00 AM0
Low
1:00 AM0
Low
2:00 AM0
Low
3:00 AM0
Low
4:00 AM0
Low
5:00 AM0
Low
6:00 AM0
Low
7:00 AM0.2
Low
8:00 AM0.6
Low
9:00 AM0.9
Low
10:00 AM3.7
Moderate
11:00 AM5.4
Moderate
12:00 PM6.5
High
1:00 PM7.4
High
2:00 PM6.8
High
3:00 PM5.1
Moderate
4:00 PM3.1
Moderate
5:00 PM1.5
Low
6:00 PM0.5
Low
7:00 PM0
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low
Data Source: National Oceanic and Atmospheric Administration (NOAA)

Nearby Places

Maximum UV Index Today
Data Source: National Oceanic and Atmospheric Administration (NOAA)