UV Index for Arcata, CA

Current Arcata UV Index

0 (Low)

Last Updated 31 minutes ago

Hourly Arcata UV Index

The hourly Arcata, CA UV Index forecast for Monday, September 1st, 2025.

5 Day Hourly Arcata UV Index Forecast

Last Updated 13 hours ago

The UV index forecast for the next five days in Arcata, CA has no days reaching the extreme level and 3 days reaching the high or very high levels. The peak UV intensity in Arcata over the next five days will be 7.3 on Monday, September 1st at 1:00 pm.

The UV index forecast for Monday, September 1st in Arcata, CA is below.

Time UV Index Risk
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 4.8
Moderate
12pm 6.4
High
1pm 7.3
High
2pm 7
High
3pm 5.4
Moderate
4pm 3.4
Moderate
5pm 1.8
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 Tuesday, September 2nd in Arcata, 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 0.3
Low
9am 1.1
Low
10am 2.4
Low
11am 4.2
Moderate
12pm 5.8
Moderate
1pm 6.6
High
2pm 6.4
High
3pm 5.4
Moderate
4pm 3.6
Moderate
5pm 1.9
Low
6pm 0.7
Low
7pm 0.2
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Wednesday, September 3rd in Arcata, 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 1.7
Low
11am 3.3
Moderate
12pm 5
Moderate
1pm 6
High
2pm 5.4
Moderate
3pm 4.2
Moderate
4pm 2.8
Low
5pm 1.6
Low
6pm 0.7
Low
7pm 0.2
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Thursday, September 4th in Arcata, 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