UV Index for Johnstown, CO

Current Johnstown UV Index

5.8 (Moderate)

Last Updated 18 minutes ago

Hourly Johnstown UV Index

The hourly Johnstown, CO UV Index forecast for Friday, March 28th, 2025.

5 Day Hourly Johnstown UV Index Forecast

Last Updated 18 minutes ago

The UV index forecast for the next five days in Johnstown, CO has no days reaching the extreme level and 1 day reaching the high or very high levels. The peak UV intensity in Johnstown over the next five days will be 6 on Monday, March 31st at 1:00 pm.

The UV index forecast for Friday, March 28th in Johnstown, CO is below.

Time UV Index Risk
1pm 5.8
Moderate
2pm 5.6
Moderate
3pm 3.4
Moderate
4pm 1.9
Low
5pm 0.6
Low
6pm 0.2
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Saturday, March 29th in Johnstown, 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 0.1
Low
9am 0.2
Low
10am 0.4
Low
11am 0.5
Low
12pm 0.8
Low
1pm 1
Low
2pm 0.8
Low
3pm 0.8
Low
4pm 0.4
Low
5pm 0.2
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, March 30th in Johnstown, 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 0.1
Low
9am 0.4
Low
10am 0.8
Low
11am 1.6
Low
12pm 2.4
Low
1pm 2.9
Low
2pm 3.4
Moderate
3pm 2.4
Low
4pm 1.3
Low
5pm 0.6
Low
6pm 0.2
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Monday, March 31st in Johnstown, 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 0.4
Low
9am 1.3
Low
10am 2.8
Low
11am 4.4
Moderate
12pm 5.7
Moderate
1pm 6
High
2pm 5.5
Moderate
3pm 4.2
Moderate
4pm 2
Low
5pm 1.1
Low
6pm 0.3
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Tuesday, April 1st in Johnstown, 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