UV Index for Merrimac, MA

Current Merrimac UV Index

0 (Low)

Last Updated 45 minutes ago

Hourly Merrimac UV Index

The hourly Merrimac, MA UV Index forecast for Tuesday, October 28th, 2025.

5 Day Hourly Merrimac UV Index Forecast

Last Updated 8 hours ago

The UV index forecast for the next five days in Merrimac, MA has no days reaching the extreme level and no days reaching the high or very high levels. The peak UV intensity in Merrimac over the next five days will be 2.9 on Tuesday, October 28th at 1:00 pm.

The UV index forecast for Tuesday, October 28th in Merrimac, MA is below.

Time UV Index Risk
11pm 0
Low

The UV index forecast for Wednesday, October 29th in Merrimac, 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
Low
9am 0.2
Low
10am 0.4
Low
11am 0.5
Low
12pm 0.8
Low
1pm 0.9
Low
2pm 1.1
Low
3pm 0.9
Low
4pm 0.4
Low
5pm 0.1
Low
6pm 0
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Thursday, October 30th in Merrimac, 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
Low
9am 0.1
Low
10am 0.2
Low
11am 0.3
Low
12pm 0.4
Low
1pm 0.3
Low
2pm 0.2
Low
3pm 0.3
Low
4pm 0
Low
5pm 0
Low
6pm 0
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Friday, October 31st in Merrimac, 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
Low
9am 0.4
Low
10am 1.1
Low
11am 2
Low
12pm 2.5
Low
1pm 1.3
Low
2pm 2
Low
3pm 1.5
Low
4pm 0.6
Low
5pm 0
Low
6pm 0
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Saturday, November 1st in Merrimac, 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
Low