UV Index for Boston, MA

Current Boston UV Index

0 (Low)

Last Updated 22 minutes ago

Hourly Boston UV Index

The hourly Boston, MA UV Index forecast for Tuesday, June 17th, 2025.

5 Day Hourly Boston UV Index Forecast

Last Updated 10 hours ago

The UV index forecast for the next five days in Boston, MA has no days reaching the extreme level and 3 days reaching the high or very high levels. The peak UV intensity in Boston over the next five days will be 10.1 on Thursday, June 19th at 1:00 pm.

The UV index forecast for Tuesday, June 17th in Boston, MA is below.

Time UV Index Risk
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
9am 3.1
Moderate
10am 5
Moderate
11am 6.7
High
12pm 6
High
1pm 5
Moderate
2pm 4
Moderate
3pm 3
Moderate
4pm 2.1
Low
5pm 1.2
Low
6pm 0.2
Low
7pm 0.1
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Wednesday, June 18th in Boston, 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 0.4
Low
8am 1
Low
9am 1.9
Low
10am 2.2
Low
11am 3.8
Moderate
12pm 6.7
High
1pm 8.6
Very High
2pm 6
High
3pm 4.4
Moderate
4pm 2.5
Low
5pm 2.6
Low
6pm 0.4
Low
7pm 0.1
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Thursday, June 19th in Boston, 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 0.3
Low
9am 3.7
Moderate
10am 6
High
11am 7.9
High
12pm 9.7
Very High
1pm 10.1
Very High
2pm 9.1
Very High
3pm 7
High
4pm 4.9
Moderate
5pm 2.8
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 Boston, 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
View Historical UV Index Data