UV Index for Altona, CO

Current Altona UV Index

0 (Low)

Last Updated 14 minutes ago

Hourly Altona UV Index

The hourly Altona, CO UV Index forecast for Saturday, October 25th, 2025.

5 Day Hourly Altona UV Index Forecast

Last Updated 18 hours ago

The UV index forecast for the next five days in Altona, CO has no days reaching the extreme level and no days reaching the high or very high levels. The peak UV intensity in Altona over the next five days will be 4.7 on Saturday, October 25th at 1:00 pm.

The UV index forecast for Saturday, October 25th in Altona, CO is below.

Time UV Index Risk
7am 0
Low
8am 0
Low
9am 0.5
Low
10am 1.6
Low
11am 2.9
Low
12pm 4.2
Moderate
1pm 4.7
Moderate
2pm 4.3
Moderate
3pm 3
Moderate
4pm 1.6
Low
5pm 0.6
Low
6pm 0
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Sunday, October 26th in Altona, CO 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 0.5
Low
10am 1.3
Low
11am 2.4
Low
12pm 3.9
Moderate
1pm 4.4
Moderate
2pm 3.9
Moderate
3pm 2.6
Low
4pm 1.3
Low
5pm 0.4
Low
6pm 0
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Monday, October 27th in Altona, CO 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 0.4
Low
10am 1.4
Low
11am 0.9
Low
12pm 3.1
Moderate
1pm 4.2
Moderate
2pm 3.9
Moderate
3pm 2.6
Low
4pm 1.6
Low
5pm 0.6
Low
6pm 0
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Tuesday, October 28th in Altona, CO 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