UV Index for Lexington, MA

Current Lexington UV Index

0.2 (Low)

Last Updated 7 minutes ago

Hourly Lexington UV Index

The hourly Lexington, MA UV Index forecast for Wednesday, September 17th, 2025.

5 Day Hourly Lexington UV Index Forecast

Last Updated 4 hours ago

The UV index forecast for the next five days in Lexington, MA has no days reaching the extreme level and 1 day reaching the high or very high levels. The peak UV intensity in Lexington over the next five days will be 6 on Saturday, September 20th at 1:00 pm.

The UV index forecast for Wednesday, September 17th in Lexington, MA is below.

Time UV Index Risk
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Thursday, September 18th in Lexington, 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 0.2
Low
9am 0.5
Low
10am 1
Low
11am 2.8
Low
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 Friday, September 19th in Lexington, 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 1.2
Low
10am 2.6
Low
11am 4.1
Moderate
12pm 5.4
Moderate
1pm 4
Moderate
2pm 1.4
Low
3pm 1
Low
4pm 0.9
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 Saturday, September 20th in Lexington, 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 4.6
Moderate
12pm 5.8
Moderate
1pm 6
High
2pm 5.3
Moderate
3pm 3.9
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 Lexington, 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