UV Index for Altona, CO

Current Altona UV Index

0 (Low)

Last Updated 23 minutes ago

Hourly Altona UV Index

The hourly Altona, CO UV Index forecast for Saturday, July 12th, 2025.

5 Day Hourly Altona UV Index Forecast

Last Updated 12 hours ago

The UV index forecast for the next five days in Altona, CO has 1 day reaching the extreme level and 2 days reaching the high or very high levels. The peak UV intensity in Altona over the next five days will be 11.1 on Saturday, July 12th at 1:00 pm.

The UV index forecast for Saturday, July 12th in Altona, CO is below.

Time UV Index Risk
1am 0
Low
2am 0
Low
3am 0
Low
4am 0
Low
5am 0
Low
6am 0
Low
7am 0.4
Low
8am 1.5
Low
9am 3.3
Moderate
10am 5.7
Moderate
11am 8.3
Very High
12pm 10.4
Very High
1pm 11.1
Extreme
2pm 10
Very High
3pm 7.8
High
4pm 5.8
Moderate
5pm 3.5
Moderate
6pm 1.4
Low
7pm 0.4
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Sunday, July 13th 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 0.5
Low
8am 1.6
Low
9am 3.6
Moderate
10am 6.2
High
11am 9
Very High
12pm 10.1
Very High
1pm 10.8
Very High
2pm 8.1
Very High
3pm 6
High
4pm 6.2
High
5pm 3.6
Moderate
6pm 1.2
Low
7pm 0.5
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Monday, July 14th 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 0.5
Low
8am 1.5
Low
9am 3.4
Moderate
10am 6
High
11am 8.6
Very High
12pm 10.1
Very High
1pm 10.2
Very High
2pm 10
Very High
3pm 3.8
Moderate
4pm 1.1
Low
5pm 1
Low
6pm 0.5
Low
7pm 0.2
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Tuesday, July 15th 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