UV Index for El Cajon, CA

Current El Cajon UV Index

0.3 (Low)

Last Updated 5 minutes ago

Hourly El Cajon UV Index

The hourly El Cajon, CA UV Index forecast for Monday, September 15th, 2025.

5 Day Hourly El Cajon UV Index Forecast

Last Updated 7 hours ago

The UV index forecast for the next five days in El Cajon, CA has no days reaching the extreme level and 4 days reaching the high or very high levels. The peak UV intensity in El Cajon over the next five days will be 8.7 on Monday, September 15th at 1:00 pm.

The UV index forecast for Monday, September 15th in El Cajon, CA is below.

Time UV Index Risk
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Tuesday, September 16th 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
Low
8am 0.6
Low
9am 2
Low
10am 4.1
Moderate
11am 6.5
High
12pm 8.2
Very High
1pm 8.6
Very High
2pm 7.6
High
3pm 5.6
Moderate
4pm 3.1
Moderate
5pm 1.3
Low
6pm 0.3
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Wednesday, September 17th 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
Low
8am 0.3
Low
9am 1.6
Low
10am 3.8
Moderate
11am 6.2
High
12pm 7.4
High
1pm 6.4
High
2pm 4.6
Moderate
3pm 2.3
Low
4pm 0.6
Low
5pm 0.3
Low
6pm 0.1
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Thursday, September 18th 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
Low
8am 0.6
Low
9am 2
Low
10am 4.3
Moderate
11am 6.4
High
12pm 8.2
Very High
1pm 7.5
High
2pm 6.3
High
3pm 5.4
Moderate
4pm 1.9
Low
5pm 0.7
Low
6pm 0.2
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Friday, September 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