UV Index for Chantilly, VA

Current Chantilly UV Index

3.2 (Moderate)

Last Updated 46 minutes ago

Hourly Chantilly UV Index

The hourly Chantilly, VA UV Index forecast for Friday, August 29th, 2025.

5 Day Hourly Chantilly UV Index Forecast

Last Updated 20 hours ago

The UV index forecast for the next five days in Chantilly, VA has no days reaching the extreme level and 3 days reaching the high or very high levels. The peak UV intensity in Chantilly over the next five days will be 7.6 on Saturday, August 30th at 1:00 pm.

The UV index forecast for Friday, August 29th in Chantilly, VA is below.

Time UV Index Risk
11am 5.1
Moderate
12pm 6.7
High
1pm 5.9
Moderate
2pm 5.6
Moderate
3pm 5.4
Moderate
4pm 3.6
Moderate
5pm 1.4
Low
6pm 0.6
Low
7pm 0.2
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Saturday, August 30th in Chantilly, 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 0.4
Low
9am 1.4
Low
10am 3.2
Moderate
11am 5.2
Moderate
12pm 6.8
High
1pm 7.6
High
2pm 7.2
High
3pm 5.8
Moderate
4pm 3.9
Moderate
5pm 2
Low
6pm 0.8
Low
7pm 0.2
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Sunday, August 31st in Chantilly, 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 0.4
Low
9am 1.5
Low
10am 3.1
Moderate
11am 5.1
Moderate
12pm 6.7
High
1pm 7.4
High
2pm 7
High
3pm 5.6
Moderate
4pm 3.7
Moderate
5pm 1.9
Low
6pm 0.7
Low
7pm 0.2
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Monday, September 1st in Chantilly, 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 0.4
Low