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Last Updated 50 minutes ago
The hourly Costa Mesa, CA UV Index forecast for Friday, July 4th, 2025.
Last Updated 14 hours ago
The UV index forecast for the next five days in Costa Mesa, CA has 3 days reaching the extreme level and no days reaching the high or very high levels. The peak UV intensity in Costa Mesa over the next five days will be 11.8 on Saturday, July 5th at 1:00 pm.
The UV index forecast for Friday, July 4th in Costa Mesa, CA is below.
Time | UV Index | Risk |
---|---|---|
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 | 11.2 |
Extreme |
2pm | 10.3 |
Very High |
3pm | 8.2 |
Very High |
4pm | 5.5 |
Moderate |
5pm | 3 |
Moderate |
6pm | 1.2 |
Low |
7pm | 0.3 |
Low |
8pm | 0 |
Low |
9pm | 0 |
Low |
10pm | 0 |
Low |
11pm | 0 |
Low |
The UV index forecast for Saturday, July 5th in Costa Mesa, 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 | 0.5 |
Low |
8am | 1.6 |
Low |
9am | 3.7 |
Moderate |
10am | 6.5 |
High |
11am | 9.2 |
Very High |
12pm | 11.2 |
Extreme |
1pm | 11.8 |
Extreme |
2pm | 10.8 |
Very High |
3pm | 8.6 |
Very High |
4pm | 5.7 |
Moderate |
5pm | 3 |
Moderate |
6pm | 1.2 |
Low |
7pm | 0.3 |
Low |
8pm | 0 |
Low |
9pm | 0 |
Low |
10pm | 0 |
Low |
11pm | 0 |
Low |
The UV index forecast for Sunday, July 6th in Costa Mesa, 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 | 1.6 |
Low |
9am | 3.6 |
Moderate |
10am | 6.4 |
High |
11am | 9 |
Very High |
12pm | 10.9 |
Very High |
1pm | 11.4 |
Extreme |
2pm | 10.5 |
Very High |
3pm | 8.3 |
Very High |
4pm | 5.6 |
Moderate |
5pm | 3 |
Moderate |
6pm | 1.2 |
Low |
7pm | 0.3 |
Low |
8pm | 0 |
Low |
9pm | 0 |
Low |
10pm | 0 |
Low |
11pm | 0 |
Low |
The UV index forecast for Monday, July 7th in Costa Mesa, 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 |