UV Index for Littleton, MA

Current Littleton UV Index

0.3 (Low)

Last Updated 24 minutes ago

Hourly Littleton UV Index

The hourly Littleton, MA UV Index forecast for Wednesday, June 18th, 2025.

5 Day Hourly Littleton UV Index Forecast

Last Updated 20 hours ago

The UV index forecast for the next five days in Littleton, MA has no days reaching the extreme level and 2 days reaching the high or very high levels. The peak UV intensity in Littleton over the next five days will be 9.9 on Thursday, June 19th at 1:00 pm.

The UV index forecast for Wednesday, June 18th in Littleton, MA is below.

Time UV Index Risk
11am 2.1
Low
12pm 1.1
Low
1pm 2.2
Low
2pm 4.2
Moderate
3pm 5.4
Moderate
4pm 1.6
Low
5pm 0.7
Low
6pm 0.2
Low
7pm 0.2
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Thursday, June 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 0.2
Low
7am 0.7
Low
8am 1.8
Low
9am 3.5
Moderate
10am 6
High
11am 8.1
Very High
12pm 9.6
Very High
1pm 9.9
Very High
2pm 8.9
Very High
3pm 7.1
High
4pm 4.8
Moderate
5pm 2.7
Low
6pm 1.2
Low
7pm 0.4
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Friday, June 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 0.1
Low
7am 0.6
Low
8am 1.8
Low
9am 3.5
Moderate
10am 5.5
Moderate
11am 7.4
High
12pm 8.7
Very High
1pm 8.9
Very High
2pm 7.9
High
3pm 6.1
High
4pm 4.2
Moderate
5pm 1.8
Low
6pm 0.7
Low
7pm 0.3
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Saturday, June 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 0.2
Low
7am 0.6
Low
8am 1.6
Low