0 (Low)
Last Updated 32 minutes ago
The hourly Waltham, MA UV Index forecast for Sunday, September 7th, 2025.
Last Updated 15 hours ago
The UV index forecast for the next five days in Waltham, MA has no days reaching the extreme level and 1 day reaching the high or very high levels. The peak UV intensity in Waltham over the next five days will be 6.5 on Monday, September 8th at 1:00 pm.
The UV index forecast for Sunday, September 7th in Waltham, MA is below.
Time | UV Index | Risk |
---|---|---|
6am | 0 |
Low |
7am | 0 |
Low |
8am | 0 |
Low |
9am | 0.1 |
Low |
10am | 0.3 |
Low |
11am | 0.4 |
Low |
12pm | 0.7 |
Low |
1pm | 0.5 |
Low |
2pm | 0.5 |
Low |
3pm | 0.7 |
Low |
4pm | 0.4 |
Low |
5pm | 0.3 |
Low |
6pm | 0 |
Low |
7pm | 0 |
Low |
8pm | 0 |
Low |
9pm | 0 |
Low |
10pm | 0 |
Low |
11pm | 0 |
Low |
The UV index forecast for Monday, September 8th in Waltham, MA 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 | 0.1 |
Low |
8am | 0.6 |
Low |
9am | 1.7 |
Low |
10am | 3.3 |
Moderate |
11am | 4.9 |
Moderate |
12pm | 6.2 |
High |
1pm | 6.5 |
High |
2pm | 5.6 |
Moderate |
3pm | 4.1 |
Moderate |
4pm | 2.1 |
Low |
5pm | 0.9 |
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 Tuesday, September 9th in Waltham, MA 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 | 0.1 |
Low |
8am | 0.6 |
Low |
9am | 1.5 |
Low |
10am | 3 |
Moderate |
11am | 4.6 |
Moderate |
12pm | 5.6 |
Moderate |
1pm | 5.8 |
Moderate |
2pm | 5.2 |
Moderate |
3pm | 3.8 |
Moderate |
4pm | 2.2 |
Low |
5pm | 1 |
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 Wednesday, September 10th in Waltham, MA 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 | 0.1 |
Low |
8am | 0.5 |
Low |