0.4 (Low)
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The hourly Ontario, IL UV Index forecast for Monday, September 15th, 2025.
Last Updated 19 hours ago
The UV index forecast for the next five days in Ontario, IL has no days reaching the extreme level and 1 day reaching the high or very high levels. The peak UV intensity in Ontario over the next five days will be 6.1 on Wednesday, September 17th at 1:00 pm.
The UV index forecast for Monday, September 15th in Ontario, IL is below.
Time | UV Index | Risk |
---|---|---|
9am | 1.2 |
Low |
10am | 2.4 |
Low |
11am | 3.9 |
Moderate |
12pm | 5.4 |
Moderate |
1pm | 5.9 |
Moderate |
2pm | 5.7 |
Moderate |
3pm | 4.3 |
Moderate |
4pm | 2.4 |
Low |
5pm | 0.8 |
Low |
6pm | 0.2 |
Low |
7pm | 0 |
Low |
8pm | 0 |
Low |
9pm | 0 |
Low |
10pm | 0 |
Low |
11pm | 0 |
Low |
The UV index forecast for Tuesday, September 16th in Ontario, 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 |
Low |
8am | 0.3 |
Low |
9am | 1.1 |
Low |
10am | 2.5 |
Low |
11am | 3.9 |
Moderate |
12pm | 5.4 |
Moderate |
1pm | 5.6 |
Moderate |
2pm | 5 |
Moderate |
3pm | 3.6 |
Moderate |
4pm | 2.1 |
Low |
5pm | 1 |
Low |
6pm | 0.4 |
Low |
7pm | 0 |
Low |
8pm | 0 |
Low |
9pm | 0 |
Low |
10pm | 0 |
Low |
11pm | 0 |
Low |
The UV index forecast for Wednesday, September 17th in Ontario, 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 |
Low |
8am | 0.3 |
Low |
9am | 1.1 |
Low |
10am | 2.6 |
Low |
11am | 4.2 |
Moderate |
12pm | 5.5 |
Moderate |
1pm | 6.1 |
High |
2pm | 5.6 |
Moderate |
3pm | 4.3 |
Moderate |
4pm | 2.7 |
Low |
5pm | 1.2 |
Low |
6pm | 0.3 |
Low |
7pm | 0 |
Low |
8pm | 0 |
Low |
9pm | 0 |
Low |
10pm | 0 |
Low |
11pm | 0 |
Low |
The UV index forecast for Thursday, September 18th in Ontario, 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 |
Low |