UV Index for Boston, MA

Current Boston UV Index

1.2 (Low)

Last Updated 37 minutes ago

Hourly Boston UV Index

The hourly Boston, MA UV Index forecast for Friday, May 23rd, 2025.

5 Day Hourly Boston UV Index Forecast

Last Updated 21 hours ago

The UV index forecast for the next five days in Boston, MA has no days reaching the extreme level and no days reaching the high or very high levels. The peak UV intensity in Boston over the next five days will be 4 on Sunday, May 25th at 10:00 am.

The UV index forecast for Friday, May 23rd in Boston, MA is below.

Time UV Index Risk
12pm 2.8
Low
1pm 3.7
Moderate
2pm 3.5
Moderate
3pm 2
Low
4pm 1
Low
5pm 0.2
Low
6pm 0.1
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Saturday, May 24th 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
Low
7am 0.1
Low
8am 0.2
Low
9am 0.5
Low
10am 0.9
Low
11am 1.2
Low
12pm 1.7
Low
1pm 2.5
Low
2pm 2.6
Low
3pm 1.7
Low
4pm 1.4
Low
5pm 0.6
Low
6pm 0.3
Low
7pm 0.2
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Sunday, May 25th 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 1.2
Low
9am 2.7
Low
10am 4
Moderate
11am 3.3
Moderate
12pm 1.9
Low
1pm 2.2
Low
2pm 2.1
Low
3pm 1.5
Low
4pm 1
Low
5pm 0.4
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 Monday, May 26th 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 0.5
Low
8am 1.4
Low
View Historical UV Index Data