UV Index for Altona, CO

Current Altona UV Index

0 (Low)

Last Updated 3 minutes ago

Hourly Altona UV Index

The hourly Altona, CO UV Index forecast for Thursday, July 17th, 2025.

5 Day Hourly Altona UV Index Forecast

Last Updated 8 hours ago

The UV index forecast for the next five days in Altona, CO has no days reaching the extreme level and 4 days reaching the high or very high levels. The peak UV intensity in Altona over the next five days will be 10.2 on Friday, July 18th at 1:00 pm.

The UV index forecast for Thursday, July 17th in Altona, CO is below.

Time UV Index Risk
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Friday, July 18th 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 0.4
Low
8am 1.2
Low
9am 3
Moderate
10am 5.6
Moderate
11am 8.2
Very High
12pm 8.8
Very High
1pm 10.2
Very High
2pm 6.2
High
3pm 7.4
High
4pm 2.6
Low
5pm 2.2
Low
6pm 1.3
Low
7pm 0.2
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Saturday, July 19th 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 0.4
Low
8am 1.4
Low
9am 2.9
Low
10am 4.9
Moderate
11am 7.4
High
12pm 9.3
Very High
1pm 7.9
High
2pm 5.4
Moderate
3pm 3.8
Moderate
4pm 3.3
Moderate
5pm 2.2
Low
6pm 1
Low
7pm 0.2
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Sunday, July 20th 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 0.3
Low
8am 0.8
Low
9am 2.2
Low
10am 4
Moderate
11am 6.6
High
12pm 7
High
1pm 6.6
High
2pm 6.7
High
3pm 4.6
Moderate
4pm 3.9
Moderate
5pm 1.1
Low
6pm 1.2
Low
7pm 0.2
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Monday, July 21st 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