UV Index for Derby, CT

Current Derby UV Index

0 (Low)

Last Updated 32 minutes ago

Hourly Derby UV Index

The hourly Derby, CT UV Index forecast for Monday, September 15th, 2025.

5 Day Hourly Derby UV Index Forecast

Last Updated 5 hours ago

The UV index forecast for the next five days in Derby, CT has no days reaching the extreme level and 2 days reaching the high or very high levels. The peak UV intensity in Derby over the next five days will be 6.2 on Thursday, September 18th at 1:00 pm.

The UV index forecast for Monday, September 15th in Derby, CT is below.

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

The UV index forecast for Tuesday, September 16th in Derby, CT 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 1.3
Low
10am 2.7
Low
11am 4.2
Moderate
12pm 5.3
Moderate
1pm 5.6
Moderate
2pm 5
Moderate
3pm 3.7
Moderate
4pm 2.2
Low
5pm 0.8
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 Wednesday, September 17th in Derby, CT 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 1.3
Low
10am 2.6
Low
11am 3.8
Moderate
12pm 3.7
Moderate
1pm 2.2
Low
2pm 2.2
Low
3pm 2
Low
4pm 0.8
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 Thursday, September 18th in Derby, CT 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 2.3
Low
11am 4.4
Moderate
12pm 5.7
Moderate
1pm 6.2
High
2pm 5.6
Moderate
3pm 4.1
Moderate
4pm 2.5
Low
5pm 1.1
Low
6pm 0.3
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 Derby, CT 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