UV Index Today in Chula Vista, California (CA)

Sunday, September 20, 2026 -9:23 AM PDT (GMT-7)

The UV Index in Chula Vista, California (CA) right now is 1.9. This reading was last updated at 9:00 AM PDT, about 23 minutes ago. The UV Index at10:00 AM PDT, in about 36 minutes from now, is expected to be 4.

The maximum UV Index today in Chula Vista is expected to be 8 at 1:00 PM PDT,3 hours and 36 minutes from now. The maximum UV Index tomorrow is expected to be 8.1 at 1:00 PM PDT.

Data Source: National Oceanic and Atmospheric Administration (NOAA)

Today

September 20
8
1:00 PM PDT
Very High

Tomorrow

September 21
8.1
1:00 PM PDT
Very High

UV Index Today Hourly

September 20

Based on the latest forecast, Chula Vista, California (CA) will see a peak UV Index of 8today around 1:00 PM PDT, which is classified as Very High risk.

02468107 AM8 AM9 AM10 AM11 AM12 PM1 PM2 PM3 PM4 PM5 PM6 PM7 PMPacific Daylight Time (PDT, GMT-7)Now: 9:23 AM00.61.946.37.8875.22.81.20.30
Data Source: National Oceanic and Atmospheric Administration (NOAA)

UV Index Tomorrow Hourly

September 21

Tomorrow in Chula Vista, California (CA), the UV Index is expected to reach up to 8.1 around1:00 PM PDT, placing it in the Very High risk category for sun exposure.

02468107 AM8 AM9 AM10 AM11 AM12 PM1 PM2 PM3 PM4 PM5 PM6 PM7 PMPacific Daylight Time (PDT, GMT-7)00.51.63.667.78.17.25.331.20.30
Data Source: National Oceanic and Atmospheric Administration (NOAA)

5 Day UV Index Forecast

September 19, 2026

TimeUV IndexRisk
12:00 AM0
Low
1:00 AM0
Low
2:00 AM0
Low
3:00 AM0
Low
4:00 AM0
Low
5:00 AM0
Low
6:00 AM0
Low
7:00 AM0
Low
8:00 AM0.6
Low
9:00 AM2
Low
10:00 AM4.1
Moderate
11:00 AM6.4
High
12:00 PM8.1
Very High
1:00 PM8.6
Very High
2:00 PM7.7
Very High
3:00 PM5.7
High
4:00 PM3.2
Moderate
5:00 PM1.3
Low
6:00 PM0.3
Low
7:00 PM0
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

September 20, 2026

TimeUV IndexRisk
12:00 AM0
Low
1:00 AM0
Low
2:00 AM0
Low
3:00 AM0
Low
4:00 AM0
Low
5:00 AM0
Low
6:00 AM0
Low
7:00 AM0
Low
8:00 AM0.6
Low
9:00 AM1.9
Low
10:00 AM4
Moderate
11:00 AM6.3
High
12:00 PM7.8
Very High
1:00 PM8
Very High
2:00 PM7
High
3:00 PM5.2
Moderate
4:00 PM2.8
Moderate
5:00 PM1.2
Low
6:00 PM0.3
Low
7:00 PM0
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

September 21, 2026

TimeUV IndexRisk
12:00 AM0
Low
1:00 AM0
Low
2:00 AM0
Low
3:00 AM0
Low
4:00 AM0
Low
5:00 AM0
Low
6:00 AM0
Low
7:00 AM0
Low
8:00 AM0.5
Low
9:00 AM1.6
Low
10:00 AM3.6
Moderate
11:00 AM6
High
12:00 PM7.7
Very High
1:00 PM8.1
Very High
2:00 PM7.2
High
3:00 PM5.3
Moderate
4:00 PM3
Moderate
5:00 PM1.2
Low
6:00 PM0.3
Low
7:00 PM0
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

September 22, 2026

TimeUV IndexRisk
12:00 AM0
Low
1:00 AM0
Low
2:00 AM0
Low
3:00 AM0
Low
4:00 AM0
Low
5:00 AM0
Low
6:00 AM0
Low
7:00 AM0
Low
8:00 AM0.5
Low
9:00 AM1.8
Low
10:00 AM3.8
Moderate
11:00 AM6
High
12:00 PM7.6
Very High
1:00 PM8
Very High
2:00 PM7.1
High
3:00 PM5.1
Moderate
4:00 PM2.9
Moderate
5:00 PM1.1
Low
6:00 PM0.2
Low
7:00 PM0
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

September 23, 2026

TimeUV IndexRisk
12:00 AM0
Low
1:00 AM0
Low
2:00 AM0
Low
3:00 AM0
Low
4:00 AM0
Low
5:00 AM0
Low
6:00 AM0
Low
7:00 AM0
Low
8:00 AM0.5
Low
9:00 AM1.7
Low
10:00 AM3.6
Moderate
11:00 AM5.7
High
12:00 PM7.3
High
1:00 PM7.7
Very High
2:00 PM6.9
High
3:00 PM5
Moderate
4:00 PM2.8
Moderate
5:00 PM1.1
Low
6:00 PM0.2
Low
7:00 PM0
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low
Data Source: National Oceanic and Atmospheric Administration (NOAA)

Nearby Places

Maximum UV Index Today
  • San Diego - 8
Data Source: National Oceanic and Atmospheric Administration (NOAA)