UV Index for Grand Coulee, WA

Current Grand Coulee UV Index

8.6 (Very High)

Last Updated 45 minutes ago

Hourly Grand Coulee UV Index

The hourly Grand Coulee, WA UV Index forecast for Monday, July 14th, 2025.

5 Day Hourly Grand Coulee UV Index Forecast

Last Updated 1 day ago

The UV index forecast for the next five days in Grand Coulee, WA has no days reaching the extreme level and 3 days reaching the high or very high levels. The peak UV intensity in Grand Coulee over the next five days will be 9 on Monday, July 14th at 1:00 pm.

The UV index forecast for Monday, July 14th in Grand Coulee, WA is below.

Time UV Index Risk
1pm 9
Very High
2pm 8.5
Very High
3pm 6.9
High
4pm 4.9
Moderate
5pm 2.9
Low
6pm 1.4
Low
7pm 0.5
Low
8pm 0.1
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Tuesday, July 15th in Grand Coulee, WA 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 0.2
Low
8am 0.4
Low
9am 2.4
Low
10am 3.4
Moderate
11am 3.4
Moderate
12pm 4.8
Moderate
1pm 4.6
Moderate
2pm 6.2
High
3pm 4.1
Moderate
4pm 3.3
Moderate
5pm 2.1
Low
6pm 1
Low
7pm 0.4
Low
8pm 0.1
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Wednesday, July 16th in Grand Coulee, WA 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 0.1
Low
7am 0.5
Low
8am 1.2
Low
9am 2.5
Low
10am 4.1
Moderate
11am 5.8
Moderate
12pm 7
High
1pm 7.4
High
2pm 6.8
High
3pm 5.8
Moderate
4pm 4.1
Moderate
5pm 2.4
Low
6pm 1.2
Low
7pm 0.4
Low
8pm 0.1
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Thursday, July 17th in Grand Coulee, WA is below.

Time UV Index Risk
12am 0
Low
1am 0
Low
2am 0
Low
3am 0
Low
4am 0
Low
5am 0
Low