UV Index for Greenwich, CT

Current Greenwich UV Index

0 (Low)

Last Updated 34 minutes ago

Hourly Greenwich UV Index

The hourly Greenwich, CT UV Index forecast for Tuesday, October 14th, 2025.

5 Day Hourly Greenwich UV Index Forecast

Last Updated 6 hours ago

The UV index forecast for the next five days in Greenwich, CT has no days reaching the extreme level and no days reaching the high or very high levels. The peak UV intensity in Greenwich over the next five days will be 4 on Wednesday, October 15th at 1:00 pm.

The UV index forecast for Tuesday, October 14th in Greenwich, CT is below.

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

The UV index forecast for Wednesday, October 15th in Greenwich, 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 0.1
Low
9am 0.6
Low
10am 1.6
Low
11am 2.8
Low
12pm 3.7
Moderate
1pm 4
Moderate
2pm 3.2
Moderate
3pm 2.2
Low
4pm 1.4
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 Thursday, October 16th in Greenwich, 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
Low
9am 0.6
Low
10am 1.5
Low
11am 2.6
Low
12pm 3.6
Moderate
1pm 3.9
Moderate
2pm 3.5
Moderate
3pm 2.5
Low
4pm 1.4
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 17th in Greenwich, 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
Low
9am 0.6
Low
10am 1.4
Low
11am 2.6
Low
12pm 3.5
Moderate
1pm 3.8
Moderate
2pm 3.4
Moderate
3pm 2.4
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, October 18th in Greenwich, 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
Low