UV Index for Tustin, CA

Current Tustin UV Index

0 (Low)

Last Updated 38 minutes ago

Hourly Tustin UV Index

The hourly Tustin, CA UV Index forecast for Tuesday, August 19th, 2025.

5 Day Hourly Tustin UV Index Forecast

Last Updated 11 hours ago

The UV index forecast for the next five days in Tustin, CA has no days reaching the extreme level and 4 days reaching the high or very high levels. The peak UV intensity in Tustin over the next five days will be 10.4 on Tuesday, August 19th at 1:00 pm.

The UV index forecast for Tuesday, August 19th in Tustin, CA is below.

Time UV Index Risk
11pm 0
Low

The UV index forecast for Wednesday, August 20th in Tustin, 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 0.2
Low
8am 1
Low
9am 2.7
Low
10am 5.2
Moderate
11am 7.7
High
12pm 9.3
Very High
1pm 9.6
Very High
2pm 9.1
Very High
3pm 6.9
High
4pm 4.3
Moderate
5pm 2
Low
6pm 0.7
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Thursday, August 21st in Tustin, 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 0.2
Low
8am 0.8
Low
9am 2.4
Low
10am 4.8
Moderate
11am 7.2
High
12pm 9.3
Very High
1pm 9.9
Very High
2pm 9
Very High
3pm 6.9
High
4pm 4.3
Moderate
5pm 2
Low
6pm 0.6
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Friday, August 22nd in Tustin, 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 0.2
Low
8am 0.8
Low
9am 2.4
Low
10am 5
Moderate
11am 7.5
High
12pm 9.3
Very High
1pm 9.9
Very High
2pm 9
Very High
3pm 6.8
High
4pm 4.2
Moderate
5pm 2
Low
6pm 0.6
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Saturday, August 23rd in Tustin, 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