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Last Updated 8 minutes ago
The hourly Winthrop Harbor, IL UV Index forecast for Tuesday, August 19th, 2025.
Last Updated 10 hours ago
The UV index forecast for the next five days in Winthrop Harbor, IL has no days reaching the extreme level and 4 days reaching the high or very high levels. The peak UV intensity in Winthrop Harbor over the next five days will be 8.7 on Thursday, August 21st at 1:00 pm.
The UV index forecast for Tuesday, August 19th in Winthrop Harbor, IL is below.
| Time | UV Index | Risk |
|---|
The UV index forecast for Wednesday, August 20th in Winthrop Harbor, 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 | 0.2 |
Low |
| 8am | 1 |
Low |
| 9am | 2.1 |
Low |
| 10am | 3.9 |
Moderate |
| 11am | 6.4 |
High |
| 12pm | 7.8 |
High |
| 1pm | 8.2 |
Very High |
| 2pm | 7.7 |
High |
| 3pm | 6 |
High |
| 4pm | 3.8 |
Moderate |
| 5pm | 2 |
Low |
| 6pm | 0.7 |
Low |
| 7pm | 0.1 |
Low |
| 8pm | 0 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Thursday, August 21st in Winthrop Harbor, 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 | 0.2 |
Low |
| 8am | 1 |
Low |
| 9am | 2.4 |
Low |
| 10am | 4.5 |
Moderate |
| 11am | 6.6 |
High |
| 12pm | 8.2 |
Very High |
| 1pm | 8.7 |
Very High |
| 2pm | 8 |
Very High |
| 3pm | 6.2 |
High |
| 4pm | 4 |
Moderate |
| 5pm | 2 |
Low |
| 6pm | 0.7 |
Low |
| 7pm | 0.1 |
Low |
| 8pm | 0 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Friday, August 22nd in Winthrop Harbor, 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 | 0.2 |
Low |
| 8am | 0.9 |
Low |
| 9am | 2.3 |
Low |
| 10am | 4.2 |
Moderate |
| 11am | 6 |
High |
| 12pm | 8 |
Very High |
| 1pm | 8 |
Very High |
| 2pm | 7.2 |
High |
| 3pm | 5.9 |
Moderate |
| 4pm | 3.8 |
Moderate |
| 5pm | 1.9 |
Low |
| 6pm | 0.7 |
Low |
| 7pm | 0.1 |
Low |
| 8pm | 0 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Saturday, August 23rd in Winthrop Harbor, 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 | 0.2 |
Low |