UV Index for Grand Coulee, WA

Current Grand Coulee UV Index

1.4 (Low)

Last Updated 53 minutes ago

Hourly Grand Coulee UV Index

The hourly Grand Coulee, WA UV Index forecast for Wednesday, July 2nd, 2025.

5 Day Hourly Grand Coulee UV Index Forecast

Last Updated 7 hours ago

The UV index forecast for the next five days in Grand Coulee, WA has no days reaching the extreme level and 4 days reaching the high or very high levels. The peak UV intensity in Grand Coulee over the next five days will be 8.3 on Thursday, July 3rd at 1:00 pm.

The UV index forecast for Wednesday, July 2nd in Grand Coulee, WA is below.

Time UV Index Risk
7pm 0.6
Low
8pm 0.2
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Thursday, July 3rd 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 0.2
Low
7am 0.6
Low
8am 1.6
Low
9am 3.1
Moderate
10am 4.9
Moderate
11am 6.6
High
12pm 7.9
High
1pm 8.3
Very High
2pm 7.8
High
3pm 6.4
High
4pm 4.6
Moderate
5pm 2.8
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 Friday, July 4th 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 0.2
Low
7am 0.5
Low
8am 1
Low
9am 1.8
Low
10am 2.4
Low
11am 4.4
Moderate
12pm 6.4
High
1pm 7.6
High
2pm 7.4
High
3pm 6
High
4pm 4.3
Moderate
5pm 2.6
Low
6pm 1.3
Low
7pm 0.5
Low
8pm 0.1
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Saturday, July 5th 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 0.2
Low
7am 0.6
Low
8am 1.6
Low
9am 3
Moderate
10am 4.9
Moderate
11am 6.6
High
12pm 7.9
High
1pm 8.3
Very High
2pm 7.6
High
3pm 6.3
High
4pm 4.5
Moderate
5pm 2.7
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 Sunday, July 6th 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