UV Index for Mercersburg, PA

Current Mercersburg UV Index

0.4 (Low)

Last Updated 24 minutes ago

Hourly Mercersburg UV Index

The hourly Mercersburg, PA UV Index forecast for Tuesday, July 1st, 2025.

5 Day Hourly Mercersburg UV Index Forecast

Last Updated 17 hours ago

The UV index forecast for the next five days in Mercersburg, PA has no days reaching the extreme level and 3 days reaching the high or very high levels. The peak UV intensity in Mercersburg over the next five days will be 10 on Tuesday, July 1st at 1:00 pm.

The UV index forecast for Tuesday, July 1st in Mercersburg, PA is below.

Time UV Index Risk
8am 1.2
Low
9am 2.8
Low
10am 4.8
Moderate
11am 4.9
Moderate
12pm 7.2
High
1pm 10
Very High
2pm 8.4
Very High
3pm 3.9
Moderate
4pm 3.2
Moderate
5pm 1.4
Low
6pm 0.2
Low
7pm 0.2
Low
8pm 0.1
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Wednesday, July 2nd 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 0.4
Low
8am 1.2
Low
9am 2.7
Low
10am 4.8
Moderate
11am 7.1
High
12pm 8.8
Very High
1pm 9.6
Very High
2pm 9.1
Very High
3pm 7.3
High
4pm 2.2
Low
5pm 2
Low
6pm 1.5
Low
7pm 0.6
Low
8pm 0.1
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Thursday, July 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 0.3
Low
8am 1.1
Low
9am 2.7
Low
10am 4.7
Moderate
11am 7
High
12pm 9
Very High
1pm 9.8
Very High
2pm 7.9
High
3pm 2.2
Low
4pm 3.3
Moderate
5pm 3.1
Moderate
6pm 1.6
Low
7pm 0.6
Low
8pm 0.1
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Friday, July 4th 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 0.3
Low
8am 1.1
Low