UV Index for El Cajon, CA

Current El Cajon UV Index

4.8 (Moderate)

Last Updated 36 minutes ago

Hourly El Cajon UV Index

The hourly El Cajon, CA UV Index forecast for Friday, July 18th, 2025.

5 Day Hourly El Cajon UV Index Forecast

Last Updated 5 hours ago

The UV index forecast for the next five days in El Cajon, CA has 2 days reaching the extreme level and 2 days reaching the high or very high levels. The peak UV intensity in El Cajon over the next five days will be 11.6 on Monday, July 21st at 1:00 pm.

The UV index forecast for Friday, July 18th in El Cajon, CA is below.

Time UV Index Risk
5pm 2.4
Low
6pm 0.9
Low
7pm 0.2
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Saturday, July 19th in El Cajon, 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 3.4
Moderate
10am 5.9
Moderate
11am 8.4
Very High
12pm 10.4
Very High
1pm 10.8
Very High
2pm 9.7
Very High
3pm 7.6
High
4pm 4.9
Moderate
5pm 2.5
Low
6pm 0.9
Low
7pm 0.2
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Sunday, July 20th in El Cajon, 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 3.4
Moderate
10am 6
High
11am 8.7
Very High
12pm 10.6
Very High
1pm 11.2
Extreme
2pm 10.1
Very High
3pm 7.8
High
4pm 5.1
Moderate
5pm 2.6
Low
6pm 1
Low
7pm 0.2
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Monday, July 21st in El Cajon, 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 3.6
Moderate
10am 6.4
High
11am 9.2
Very High
12pm 11.2
Extreme
1pm 11.6
Extreme
2pm 10.6
Very High
3pm 8.2
Very High
4pm 5.3
Moderate
5pm 2.7
Low
6pm 1
Low
7pm 0.2
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Tuesday, July 22nd in El Cajon, 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