0 (Low)
Last Updated 42 minutes ago
The hourly Littleton, MA UV Index forecast for Thursday, September 18th, 2025.
Last Updated 13 hours ago
The UV index forecast for the next five days in Littleton, MA has no days reaching the extreme level and no days reaching the high or very high levels. The peak UV intensity in Littleton over the next five days will be 5.9 on Saturday, September 20th at 1:00 pm.
The UV index forecast for Thursday, September 18th in Littleton, MA is below.
Time | UV Index | Risk |
---|---|---|
4am | 0 |
Low |
5am | 0 |
Low |
6am | 0 |
Low |
7am | 0 |
Low |
8am | 0.4 |
Low |
9am | 1.4 |
Low |
10am | 2.8 |
Low |
11am | 4.4 |
Moderate |
12pm | 5.5 |
Moderate |
1pm | 5.7 |
Moderate |
2pm | 5 |
Moderate |
3pm | 3.3 |
Moderate |
4pm | 1.9 |
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 Friday, September 19th in Littleton, 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 |
Low |
8am | 0.4 |
Low |
9am | 1.3 |
Low |
10am | 2.7 |
Low |
11am | 4.1 |
Moderate |
12pm | 5.4 |
Moderate |
1pm | 5.5 |
Moderate |
2pm | 4.1 |
Moderate |
3pm | 2.4 |
Low |
4pm | 2.1 |
Low |
5pm | 0.9 |
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 Saturday, September 20th in Littleton, 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 |
Low |
8am | 0.4 |
Low |
9am | 1.4 |
Low |
10am | 2.9 |
Low |
11am | 4.4 |
Moderate |
12pm | 5.6 |
Moderate |
1pm | 5.9 |
Moderate |
2pm | 5.2 |
Moderate |
3pm | 3.8 |
Moderate |
4pm | 2.2 |
Low |
5pm | 0.9 |
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 Sunday, September 21st in Littleton, 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 |
Low |
8am | 0.4 |
Low |