UV Index Today in San Jose, California (CA)

Saturday, August 15, 2026 -12:35 AM PDT (GMT-7)

The UV Index in San Jose, California (CA) right now is 0. This reading was last updated at 12:00 AM PDT, about 35 minutes ago. The UV Index at1:00 AM PDT, in about 24 minutes from now, is expected to be 0.

The maximum UV Index today in San Jose is expected to be 8.9 at 1:00 PM PDT,12 hours and 24 minutes from now. The maximum UV Index tomorrow is expected to be 9.2 at 1:00 PM PDT.

Data Source: National Oceanic and Atmospheric Administration (NOAA)

Today

August 15
8.9
1:00 PM PDT
Very High

Tomorrow

August 16
9.2
1:00 PM PDT
Very High

UV Index Today Hourly

August 15

San Jose, California (CA) sees Very High-risk UV conditions today, with the index reaching8.9 around 1:00 PM PDT.

02468106 AM7 AM8 AM9 AM10 AM11 AM12 PM1 PM2 PM3 PM4 PM5 PM6 PM7 PM8 PMPacific Daylight Time (PDT, GMT-7)Now: 12:35 AM00.10.51.74.16.38.18.98.46.94.72.510.20
Data Source: National Oceanic and Atmospheric Administration (NOAA)

UV Index Tomorrow Hourly

August 16

Tomorrow in San Jose, California (CA), the UV Index is expected to reach up to 9.2 around1:00 PM PDT, placing it in the Very High risk category for sun exposure.

02468106 AM7 AM8 AM9 AM10 AM11 AM12 PM1 PM2 PM3 PM4 PM5 PM6 PM7 PM8 PMPacific Daylight Time (PDT, GMT-7)00.10.72.14.16.58.39.28.774.72.50.90.20
Data Source: National Oceanic and Atmospheric Administration (NOAA)

5 Day UV Index Forecast

August 14, 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 AM0.1
Low
8:00 AM0.6
Low
9:00 AM2
Low
10:00 AM4
Moderate
11:00 AM6.2
High
12:00 PM8.1
Very High
1:00 PM8.8
Very High
2:00 PM8.4
Very High
3:00 PM6.9
High
4:00 PM4.7
Moderate
5:00 PM2.5
Moderate
6:00 PM1
Low
7:00 PM0.2
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

August 15, 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 AM0.1
Low
8:00 AM0.5
Low
9:00 AM1.7
Low
10:00 AM4.1
Moderate
11:00 AM6.3
High
12:00 PM8.1
Very High
1:00 PM8.9
Very High
2:00 PM8.4
Very High
3:00 PM6.9
High
4:00 PM4.7
Moderate
5:00 PM2.5
Moderate
6:00 PM1
Low
7:00 PM0.2
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

August 16, 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 AM0.1
Low
8:00 AM0.7
Low
9:00 AM2.1
Low
10:00 AM4.1
Moderate
11:00 AM6.5
High
12:00 PM8.3
Very High
1:00 PM9.2
Very High
2:00 PM8.7
Very High
3:00 PM7
High
4:00 PM4.7
Moderate
5:00 PM2.5
Moderate
6:00 PM0.9
Low
7:00 PM0.2
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

August 17, 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 AM0.1
Low
8:00 AM0.7
Low
9:00 AM2
Low
10:00 AM4
Moderate
11:00 AM6.5
High
12:00 PM8.7
Very High
1:00 PM9.6
Very High
2:00 PM9
Very High
3:00 PM6.9
High
4:00 PM4.6
Moderate
5:00 PM2.6
Moderate
6:00 PM1
Low
7:00 PM0.2
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

August 18, 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 AM0.1
Low
8:00 AM0.8
Low
9:00 AM2.2
Low
10:00 AM4.5
Moderate
11:00 AM7
High
12:00 PM8.8
Very High
1:00 PM9.5
Very High
2:00 PM8.7
Very High
3:00 PM6.5
High
4:00 PM4.8
Moderate
5:00 PM2.5
Moderate
6:00 PM0.9
Low
7:00 PM0.2
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
Data Source: National Oceanic and Atmospheric Administration (NOAA)