UV Index for Mercersburg, PA

Current Mercersburg UV Index

1.8 (Low)

Last Updated 42 minutes ago

Hourly Mercersburg UV Index

The hourly Mercersburg, PA UV Index forecast for Thursday, October 30th, 2025.

5 Day Hourly Mercersburg UV Index Forecast

Last Updated 1 hour ago

The UV index forecast for the next five days in Mercersburg, PA has no days reaching the extreme level and no days reaching the high or very high levels. The peak UV intensity in Mercersburg over the next five days will be 3.2 on Saturday, November 1st at 1:00 pm.

The UV index forecast for Thursday, October 30th in Mercersburg, PA is below.

Time UV Index Risk
4pm 1.1
Low
5pm 0.5
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 Mercersburg, PA 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 0.4
Low
11am 1.1
Low
12pm 2.1
Low
1pm 3
Moderate
2pm 3
Moderate
3pm 2.2
Low
4pm 1.3
Low
5pm 0.5
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 Mercersburg, PA 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 0.8
Low
11am 1.7
Low
12pm 2.8
Low
1pm 3.2
Moderate
2pm 3.1
Moderate
3pm 2.2
Low
4pm 1.3
Low
5pm 0.5
Low
6pm 0
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Sunday, November 2nd in Mercersburg, PA is below.

Time UV Index Risk
12am 0
Low
1am 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 0.8
Low
10am 1.6
Low
11am 2.4
Low
12pm 2.8
Low
1pm 2.6
Low
2pm 2
Low
3pm 1.2
Low
4pm 0.4
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 Monday, November 3rd in Mercersburg, PA 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