UV Index for Thornton, CO

Current Thornton UV Index

0 (Low)

Last Updated 44 minutes ago

Hourly Thornton UV Index

The hourly Thornton, CO UV Index forecast for Thursday, May 1st, 2025.

5 Day Hourly Thornton UV Index Forecast

Last Updated 13 hours ago

The UV index forecast for the next five days in Thornton, CO has no days reaching the extreme level and 2 days reaching the high or very high levels. The peak UV intensity in Thornton over the next five days will be 8.9 on Saturday, May 3rd at 1:00 pm.

The UV index forecast for Thursday, May 1st in Thornton, CO is below.

Time UV Index Risk
2am 0
Low
3am 0
Low
4am 0
Low
5am 0
Low
6am 0
Low
7am 0
Low
8am 0.1
Low
9am 0.2
Low
10am 0.4
Low
11am 0.9
Low
12pm 2
Low
1pm 2.4
Low
2pm 2
Low
3pm 4.2
Moderate
4pm 3.2
Moderate
5pm 1.9
Low
6pm 0.8
Low
7pm 0.2
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Friday, May 2nd in Thornton, 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 0.2
Low
8am 1
Low
9am 2.4
Low
10am 4.5
Moderate
11am 6.5
High
12pm 4.1
Moderate
1pm 4.9
Moderate
2pm 7.5
High
3pm 5.8
Moderate
4pm 3.8
Moderate
5pm 2.1
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 Saturday, May 3rd in Thornton, 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 0.2
Low
8am 1
Low
9am 2.4
Low
10am 4.3
Moderate
11am 6.5
High
12pm 8.2
Very High
1pm 8.9
Very High
2pm 8
Very High
3pm 6
High
4pm 2.5
Low
5pm 1.7
Low
6pm 0.4
Low
7pm 0.1
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Sunday, May 4th in Thornton, 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