UV Index for Fortuna, CA

Current Fortuna UV Index

0 (Low)

Last Updated 41 minutes ago

Hourly Fortuna UV Index

The hourly Fortuna, CA UV Index forecast for Friday, September 19th, 2025.

5 Day Hourly Fortuna UV Index Forecast

Last Updated 17 hours ago

The UV index forecast for the next five days in Fortuna, CA has no days reaching the extreme level and 1 day reaching the high or very high levels. The peak UV intensity in Fortuna over the next five days will be 6.5 on Sunday, September 21st at 1:00 pm.

The UV index forecast for Friday, September 19th in Fortuna, CA is below.

Time UV Index Risk
5am 0
Low
6am 0
Low
7am 0
Low
8am 0.2
Low
9am 0.6
Low
10am 1.7
Low
11am 3.6
Moderate
12pm 5
Moderate
1pm 5.5
Moderate
2pm 5
Moderate
3pm 3.9
Moderate
4pm 2.5
Low
5pm 1.2
Low
6pm 0.4
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Saturday, September 20th in Fortuna, 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
Low
8am 0.2
Low
9am 0.8
Low
10am 2.1
Low
11am 3.8
Moderate
12pm 5.2
Moderate
1pm 5.9
Moderate
2pm 5.6
Moderate
3pm 4.7
Moderate
4pm 3.1
Moderate
5pm 1.5
Low
6pm 0.5
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Sunday, September 21st in Fortuna, 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
Low
8am 0.2
Low
9am 0.9
Low
10am 2.2
Low
11am 4
Moderate
12pm 5.6
Moderate
1pm 6.5
High
2pm 6.4
High
3pm 5.1
Moderate
4pm 3.3
Moderate
5pm 1.6
Low
6pm 0.5
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Monday, September 22nd in Fortuna, 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