UV Index for O'Fallon, IL

Current O'Fallon UV Index

7.7 (High)

Last Updated 43 minutes ago

Hourly O'Fallon UV Index

The hourly O'Fallon, IL UV Index forecast for Tuesday, June 24th, 2025.

5 Day Hourly O'Fallon UV Index Forecast

Last Updated 22 hours ago

The UV index forecast for the next five days in O'Fallon, IL has no days reaching the extreme level and 3 days reaching the high or very high levels. The peak UV intensity in O'Fallon over the next five days will be 10.8 on Wednesday, June 25th at 1:00 pm.

The UV index forecast for Tuesday, June 24th in O'Fallon, IL is below.

Time UV Index Risk
12pm 9.6
Very High
1pm 10.4
Very High
2pm 10
Very High
3pm 8.2
Very High
4pm 5.6
Moderate
5pm 3.1
Moderate
6pm 1.2
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Wednesday, June 25th in O'Fallon, 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 1.5
Low
9am 3.4
Moderate
10am 5.8
Moderate
11am 8.3
Very High
12pm 10.2
Very High
1pm 10.8
Very High
2pm 10.1
Very High
3pm 7.6
High
4pm 5.3
Moderate
5pm 3.2
Moderate
6pm 1.2
Low
7pm 0.3
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Thursday, June 26th in O'Fallon, 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 1.5
Low
9am 3.3
Moderate
10am 5.6
Moderate
11am 8.1
Very High
12pm 9.8
Very High
1pm 10.4
Very High
2pm 9.8
Very High
3pm 8
Very High
4pm 5.5
Moderate
5pm 3.2
Moderate
6pm 0.7
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Friday, June 27th in O'Fallon, 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