UV Index for Johnstonville, CA

Current Johnstonville UV Index

0 (Low)

Last Updated 39 minutes ago

Hourly Johnstonville UV Index

The hourly Johnstonville, CA UV Index forecast for Wednesday, July 9th, 2025.

5 Day Hourly Johnstonville UV Index Forecast

Last Updated 17 hours ago

The UV index forecast for the next five days in Johnstonville, CA has 2 days reaching the extreme level and 1 day reaching the high or very high levels. The peak UV intensity in Johnstonville over the next five days will be 11.5 on Friday, July 11th at 1:00 pm.

The UV index forecast for Wednesday, July 9th in Johnstonville, CA is below.

Time UV Index Risk
5am 0
Low
6am 0
Low
7am 0.4
Low
8am 1.3
Low
9am 3
Moderate
10am 5.1
Moderate
11am 7.4
High
12pm 9.2
Very High
1pm 10
Very High
2pm 9.6
Very High
3pm 8.2
Very High
4pm 5.8
Moderate
5pm 3.4
Moderate
6pm 1.6
Low
7pm 0.5
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Thursday, July 10th in Johnstonville, CA 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 3.2
Moderate
10am 5.7
Moderate
11am 8.2
Very High
12pm 10.3
Very High
1pm 11.1
Extreme
2pm 10.5
Very High
3pm 8.6
Very High
4pm 6.1
High
5pm 3.6
Moderate
6pm 1.6
Low
7pm 0.5
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Friday, July 11th in Johnstonville, CA 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 1.5
Low
9am 3.4
Moderate
10am 6
High
11am 8.6
Very High
12pm 10.6
Very High
1pm 11.5
Extreme
2pm 10.8
Very High
3pm 9
Very High
4pm 6.4
High
5pm 3.7
Moderate
6pm 1.7
Low
7pm 0.5
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Saturday, July 12th in Johnstonville, CA is below.

Time UV Index Risk
12am 0
Low
1am 0
Low
2am 0
Low
3am 0
Low
4am 0
Low
5am 0
Low