UV Index Today in San Jose, California (CA)

Friday, May 22, 2026 -11:40 AMPDT (GMT-7)

The UV Index in San Jose, California (CA) right now is 6.4. This reading was last updated at 11:00 AM PDT, about 40 minutes ago. The UV Index at12:00 PM PDT, in about 19 minutes from now, is expected to be 8.1.

The maximum UV Index today in San Jose is expected to be 8.8 at 1:00 PM PDT,1 hour and 19 minutes from now. The maximum UV Index tomorrow is expected to be 8.9 at 1:00 PM PDT.

Data Source: National Oceanic and Atmospheric Administration (NOAA)

Today

May 22
8.8
1:00 PM PDT
Very High

Tomorrow

May 23
8.9
1:00 PM PDT
Very High

UV Index Today Hourly

May 22

San Jose, California (CA) sees Very High-risk UV conditions today, with the index reaching8.8 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: 11:40 AM00.312.44.36.48.18.88.46.94.82.81.20.40
Data Source: National Oceanic and Atmospheric Administration (NOAA)

UV Index Tomorrow Hourly

May 23

Tomorrow in San Jose, California (CA), the UV Index is expected to reach up to 8.9 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)00.312.44.36.48.18.98.46.94.82.81.30.40
Data Source: National Oceanic and Atmospheric Administration (NOAA)

5 Day UV Index Forecast

May 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 AM0.3
Low
8:00 AM1
Low
9:00 AM2.4
Low
10:00 AM4.4
Moderate
11:00 AM6.6
High
12:00 PM8.2
Very High
1:00 PM9
Very High
2:00 PM8.6
Very High
3:00 PM7.1
High
4:00 PM5
Moderate
5:00 PM2.9
Moderate
6:00 PM1.3
Low
7:00 PM0.4
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

May 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 AM0.3
Low
8:00 AM1
Low
9:00 AM2.4
Low
10:00 AM4.3
Moderate
11:00 AM6.4
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 PM4.8
Moderate
5:00 PM2.8
Moderate
6:00 PM1.2
Low
7:00 PM0.4
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

May 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 AM0.3
Low
8:00 AM1
Low
9:00 AM2.4
Low
10:00 AM4.3
Moderate
11:00 AM6.4
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 PM4.8
Moderate
5:00 PM2.8
Moderate
6:00 PM1.3
Low
7:00 PM0.4
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

May 24, 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 AM0.3
Low
8:00 AM0.9
Low
9:00 AM2.3
Low
10:00 AM4.3
Moderate
11:00 AM6.3
High
12:00 PM7.9
Very High
1:00 PM8.6
Very High
2:00 PM8.1
Very High
3:00 PM6.7
High
4:00 PM4.7
Moderate
5:00 PM2.8
Moderate
6:00 PM1.2
Low
7:00 PM0.4
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

May 25, 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 AM0.3
Low
8:00 AM1
Low
9:00 AM2.3
Low
10:00 AM4.2
Moderate
11:00 AM6.3
High
12:00 PM7.8
Very High
1:00 PM8.4
Very High
2:00 PM8.1
Very High
3:00 PM6.6
High
4:00 PM4.6
Moderate
5:00 PM2.3
Low
6:00 PM1.2
Low
7:00 PM0.4
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)