UV Index for Altoona, WA

Current Altoona UV Index

0 (Low)

Last Updated 27 minutes ago

Hourly Altoona UV Index

The hourly Altoona, WA UV Index forecast for Thursday, September 18th, 2025.

5 Day Hourly Altoona UV Index Forecast

Last Updated 20 hours ago

The UV index forecast for the next five days in Altoona, WA has no days reaching the extreme level and no days reaching the high or very high levels. The peak UV intensity in Altoona over the next five days will be 5.3 on Friday, September 19th at 1:00 pm.

The UV index forecast for Thursday, September 18th in Altoona, WA is below.

Time UV Index Risk
8am 0.1
Low
9am 0.4
Low
10am 1
Low
11am 2.2
Low
12pm 4.2
Moderate
1pm 5
Moderate
2pm 4.9
Moderate
3pm 3.9
Moderate
4pm 2.6
Low
5pm 1.2
Low
6pm 0.4
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 Altoona, 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
Low
8am 0.2
Low
9am 0.7
Low
10am 1.9
Low
11am 3.3
Moderate
12pm 4.6
Moderate
1pm 5.3
Moderate
2pm 5.1
Moderate
3pm 4.1
Moderate
4pm 2.7
Low
5pm 1.3
Low
6pm 0.4
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Saturday, September 20th in Altoona, 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
Low
8am 0.2
Low
9am 0.7
Low
10am 1.6
Low
11am 2.7
Low
12pm 3.6
Moderate
1pm 4
Moderate
2pm 3.7
Moderate
3pm 3
Moderate
4pm 1.1
Low
5pm 0.3
Low
6pm 0.1
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Sunday, September 21st in Altoona, 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