UV Index Today in Chicago, Illinois (IL)

Wednesday, July 15, 2026 -11:13 AM CDT (GMT-5)

The UV Index in Chicago, Illinois (IL) right now is 7.8. This reading was last updated at 11:00 AM CDT, about 13 minutes ago. The UV Index at12:00 PM CDT, in about 46 minutes from now, is expected to be 9.1.

The maximum UV Index today in Chicago is expected to be 9.4 at 1:00 PM CDT,1 hour and 46 minutes from now. The maximum UV Index tomorrow is expected to be 8.7 at 1:00 PM CDT.

Data Source: National Oceanic and Atmospheric Administration (NOAA)

Today

July 15
9.4
1:00 PM CDT
Very High

Tomorrow

July 16
8.7
1:00 PM CDT
Very High

UV Index Today Hourly

July 15

Weather models predict UV Index 9.4 for Chicago, Illinois (IL) today, peaking near 1:00 PM CDT - Very High risk level.

02468105 AM6 AM7 AM8 AM9 AM10 AM11 AM12 PM1 PM2 PM3 PM4 PM5 PM6 PM7 PM8 PMCentral Daylight Time (CDT, GMT-5)Now: 11:13 AM00.10.51.63.45.67.89.19.497.24.92.71.20.40
Data Source: National Oceanic and Atmospheric Administration (NOAA)

UV Index Tomorrow Hourly

July 16

The UV Index for Chicago, Illinois (IL) peaks at 8.7 tomorrow at 1:00 PM CDT, classified as Very High risk.

02468106 AM7 AM8 AM9 AM10 AM11 AM12 PM1 PM2 PM3 PM4 PM5 PM6 PM7 PM8 PMCentral Daylight Time (CDT, GMT-5)00.41.32.84.86.88.28.77.94.31.61.10.50.20
Data Source: National Oceanic and Atmospheric Administration (NOAA)

5 Day UV Index Forecast

July 14, 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 AM0.1
Low
7:00 AM0.6
Low
8:00 AM1.6
Low
9:00 AM3.4
Moderate
10:00 AM5.7
High
11:00 AM7.9
Very High
12:00 PM9.5
Very High
1:00 PM9.9
Very High
2:00 PM9
Very High
3:00 PM7.3
High
4:00 PM4.9
Moderate
5:00 PM2.7
Moderate
6:00 PM1.2
Low
7:00 PM0.4
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

July 15, 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 AM0.1
Low
7:00 AM0.5
Low
8:00 AM1.6
Low
9:00 AM3.4
Moderate
10:00 AM5.6
High
11:00 AM7.8
Very High
12:00 PM9.1
Very High
1:00 PM9.4
Very High
2:00 PM9
Very High
3:00 PM7.2
High
4:00 PM4.9
Moderate
5:00 PM2.7
Moderate
6:00 PM1.2
Low
7:00 PM0.4
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

July 16, 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 AM0.4
Low
8:00 AM1.3
Low
9:00 AM2.8
Moderate
10:00 AM4.8
Moderate
11:00 AM6.8
High
12:00 PM8.2
Very High
1:00 PM8.7
Very High
2:00 PM7.9
Very High
3:00 PM4.3
Moderate
4:00 PM1.6
Low
5:00 PM1.1
Low
6:00 PM0.5
Low
7:00 PM0.2
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

July 17, 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 AM0.5
Low
8:00 AM1.6
Low
9:00 AM3.3
Moderate
10:00 AM5.3
Moderate
11:00 AM6.5
High
12:00 PM8.3
Very High
1:00 PM5.5
High
2:00 PM6.2
High
3:00 PM5.1
Moderate
4:00 PM3
Moderate
5:00 PM2.5
Moderate
6:00 PM1.2
Low
7:00 PM0.4
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

July 18, 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 AM0.5
Low
8:00 AM1.5
Low
9:00 AM3.2
Moderate
10:00 AM5.4
Moderate
11:00 AM7.4
High
12:00 PM8.8
Very High
1:00 PM6.4
High
2:00 PM6.6
High
3:00 PM5.6
High
4:00 PM3
Moderate
5:00 PM2.3
Low
6:00 PM0.9
Low
7:00 PM0.3
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)