UV Index for Herndon, VA

Current Herndon UV Index

4.4 (Moderate)

Last Updated 5 minutes ago

Hourly Herndon UV Index

The hourly Herndon, VA UV Index forecast for Wednesday, March 26th, 2025.

5 Day Hourly Herndon UV Index Forecast

Last Updated 6 minutes ago

The UV index forecast for the next five days in Herndon, VA has no days reaching the extreme level and no days reaching the high or very high levels. The peak UV intensity in Herndon over the next five days will be 5.2 on Thursday, March 27th at 1:00 pm.

The UV index forecast for Wednesday, March 26th in Herndon, VA is below.

Time UV Index Risk
3pm 3.4
Moderate
4pm 2.1
Low
5pm 1
Low
6pm 0.4
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Thursday, March 27th in Herndon, VA 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 0.8
Low
10am 1.8
Low
11am 3.3
Moderate
12pm 4.5
Moderate
1pm 5.2
Moderate
2pm 4.9
Moderate
3pm 4
Moderate
4pm 2.6
Low
5pm 1.3
Low
6pm 0.4
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Friday, March 28th in Herndon, VA 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 1
Low
10am 2
Low
11am 3.8
Moderate
12pm 4.9
Moderate
1pm 4.9
Moderate
2pm 4
Moderate
3pm 3
Moderate
4pm 2.6
Low
5pm 1.4
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, March 29th in Herndon, VA 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 0.9
Low
10am 2
Low
11am 2.6
Low
12pm 3.7
Moderate
1pm 5
Moderate
2pm 4.8
Moderate
3pm 3.5
Moderate
4pm 2.2
Low
5pm 1.1
Low
6pm 0.4
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Sunday, March 30th in Herndon, VA 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