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Last Updated 23 minutes ago
The hourly Grinnell, IA UV Index forecast for Tuesday, July 1st, 2025.
Last Updated 13 hours ago
The UV index forecast for the next five days in Grinnell, IA has no days reaching the extreme level and 3 days reaching the high or very high levels. The peak UV intensity in Grinnell over the next five days will be 10.3 on Wednesday, July 2nd at 1:00 pm.
The UV index forecast for Tuesday, July 1st in Grinnell, IA is below.
Time | UV Index | Risk |
---|---|---|
3am | 0 |
Low |
4am | 0 |
Low |
5am | 0 |
Low |
6am | 0 |
Low |
7am | 0.4 |
Low |
8am | 1.2 |
Low |
9am | 2.6 |
Low |
10am | 4.6 |
Moderate |
11am | 6.8 |
High |
12pm | 8.6 |
Very High |
1pm | 9.4 |
Very High |
2pm | 9.1 |
Very High |
3pm | 7.6 |
High |
4pm | 5.6 |
Moderate |
5pm | 3.5 |
Moderate |
6pm | 1.7 |
Low |
7pm | 0.6 |
Low |
8pm | 0.2 |
Low |
9pm | 0 |
Low |
10pm | 0 |
Low |
11pm | 0 |
Low |
The UV index forecast for Wednesday, July 2nd in Grinnell, IA 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 | 2.8 |
Low |
10am | 5.1 |
Moderate |
11am | 7.5 |
High |
12pm | 9.4 |
Very High |
1pm | 10.3 |
Very High |
2pm | 9.9 |
Very High |
3pm | 8.4 |
Very High |
4pm | 6.1 |
High |
5pm | 3.8 |
Moderate |
6pm | 1.9 |
Low |
7pm | 0.7 |
Low |
8pm | 0.2 |
Low |
9pm | 0 |
Low |
10pm | 0 |
Low |
11pm | 0 |
Low |
The UV index forecast for Thursday, July 3rd in Grinnell, IA 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 | 2.8 |
Low |
10am | 3.6 |
Moderate |
11am | 4.1 |
Moderate |
12pm | 5.6 |
Moderate |
1pm | 7 |
High |
2pm | 9.6 |
Very High |
3pm | 8 |
Very High |
4pm | 6 |
High |
5pm | 3.7 |
Moderate |
6pm | 1.8 |
Low |
7pm | 0.6 |
Low |
8pm | 0.2 |
Low |
9pm | 0 |
Low |
10pm | 0 |
Low |
11pm | 0 |
Low |
The UV index forecast for Friday, July 4th in Grinnell, IA 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 |