UV Index for Chester, IL

Current Chester UV Index

0 (Low)

Last Updated 23 minutes ago

Hourly Chester UV Index

The hourly Chester, IL UV Index forecast for Friday, July 18th, 2025.

5 Day Hourly Chester UV Index Forecast

Last Updated 16 hours ago

The UV index forecast for the next five days in Chester, IL has no days reaching the extreme level and 3 days reaching the high or very high levels. The peak UV intensity in Chester over the next five days will be 10.3 on Saturday, July 19th at 1:00 pm.

The UV index forecast for Friday, July 18th in Chester, IL is below.

Time UV Index Risk
6am 0
Low
7am 0.3
Low
8am 1.2
Low
9am 3
Moderate
10am 5.1
Moderate
11am 7.5
High
12pm 9.6
Very High
1pm 9
Very High
2pm 7
High
3pm 6.6
High
4pm 4.7
Moderate
5pm 1.9
Low
6pm 0.8
Low
7pm 0.3
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Saturday, July 19th in Chester, IL is below.

Time UV Index Risk
12am 0
Low
1am 0
Low
2am 0
Low
3am 0
Low
4am 0
Low
5am 0
Low
6am 0
Low
7am 0.4
Low
8am 1.2
Low
9am 2.9
Low
10am 5.2
Moderate
11am 7.7
High
12pm 9.6
Very High
1pm 10.3
Very High
2pm 8.4
Very High
3pm 7.4
High
4pm 5
Moderate
5pm 2.9
Low
6pm 1.2
Low
7pm 0.4
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Sunday, July 20th in Chester, IL is below.

Time UV Index Risk
12am 0
Low
1am 0
Low
2am 0
Low
3am 0
Low
4am 0
Low
5am 0
Low
6am 0
Low
7am 0.4
Low
8am 1.3
Low
9am 3.1
Moderate
10am 5.5
Moderate
11am 8
Very High
12pm 9.2
Very High
1pm 9.8
Very High
2pm 9.6
Very High
3pm 8
Very High
4pm 1.8
Low
5pm 1.2
Low
6pm 0.3
Low
7pm 0.1
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Monday, July 21st in Chester, IL is below.

Time UV Index Risk
12am 0
Low
1am 0
Low
2am 0
Low
3am 0
Low
4am 0
Low
5am 0
Low
6am 0
Low
7am 0.4
Low