UV Index Today in San Francisco, California (CA)

Wednesday, July 15, 2026 -9:16 AM PDT (GMT-7)

The UV Index in San Francisco, California (CA) right now is 2.6. This reading was last updated at 9:00 AM PDT, about 16 minutes ago. The UV Index at10:00 AM PDT, in about 43 minutes from now, is expected to be 4.7.

The maximum UV Index today in San Francisco is expected to be 9.8 at 1:00 PM PDT,3 hours and 43 minutes from now. The maximum UV Index tomorrow is expected to be 9.8 at 1:00 PM PDT.

Data Source: National Oceanic and Atmospheric Administration (NOAA)

Today

July 15
9.8
1:00 PM PDT
Very High

Tomorrow

July 16
9.8
1:00 PM PDT
Very High

UV Index Today Hourly

July 15

Data shows San Francisco, California (CA)'s UV Index climbing to 9.8 today, peaking at1:00 PM PDT under Very High conditions.

02468106 AM7 AM8 AM9 AM10 AM11 AM12 PM1 PM2 PM3 PM4 PM5 PM6 PM7 PM8 PMPacific Daylight Time (PDT, GMT-7)Now: 9:16 AM00.31.12.64.77.199.89.57.85.63.31.50.50
Data Source: National Oceanic and Atmospheric Administration (NOAA)

UV Index Tomorrow Hourly

July 16

The UV Index for San Francisco, California (CA) peaks at 9.8 tomorrow at 1:00 PM PDT, classified as Very High risk.

02468106 AM7 AM8 AM9 AM10 AM11 AM12 PM1 PM2 PM3 PM4 PM5 PM6 PM7 PM8 PMPacific Daylight Time (PDT, GMT-7)00.31.12.64.87.18.99.89.47.75.43.21.50.50
Data Source: National Oceanic and Atmospheric Administration (NOAA)

5 Day UV Index Forecast

July 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 AM0.3
Low
8:00 AM1
Low
9:00 AM2.6
Moderate
10:00 AM4.7
Moderate
11:00 AM6.9
High
12:00 PM8.5
Very High
1:00 PM9.6
Very High
2:00 PM9.2
Very High
3:00 PM7.7
Very High
4:00 PM5.4
Moderate
5:00 PM3.1
Moderate
6:00 PM1.5
Low
7:00 PM0.5
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

July 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 AM0.3
Low
8:00 AM1.1
Low
9:00 AM2.6
Moderate
10:00 AM4.7
Moderate
11:00 AM7.1
High
12:00 PM9
Very High
1:00 PM9.8
Very High
2:00 PM9.5
Very High
3:00 PM7.8
Very High
4:00 PM5.6
High
5:00 PM3.3
Moderate
6:00 PM1.5
Low
7:00 PM0.5
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

July 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 AM0.3
Low
8:00 AM1.1
Low
9:00 AM2.6
Moderate
10:00 AM4.8
Moderate
11:00 AM7.1
High
12:00 PM8.9
Very High
1:00 PM9.8
Very High
2:00 PM9.4
Very High
3:00 PM7.7
Very High
4:00 PM5.4
Moderate
5:00 PM3.2
Moderate
6:00 PM1.5
Low
7:00 PM0.5
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

July 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 AM0.2
Low
8:00 AM0.9
Low
9:00 AM2.2
Low
10:00 AM4.5
Moderate
11:00 AM6.7
High
12:00 PM8.3
Very High
1:00 PM9.1
Very High
2:00 PM9.1
Very High
3:00 PM7.4
High
4:00 PM5.3
Moderate
5:00 PM3.2
Moderate
6:00 PM1.4
Low
7:00 PM0.4
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

July 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 AM0.2
Low
8:00 AM1
Low
9:00 AM2.4
Low
10:00 AM4.3
Moderate
11:00 AM6.6
High
12:00 PM8.9
Very High
1:00 PM10
Very High
2:00 PM9.7
Very High
3:00 PM8.2
Very High
4:00 PM5.8
High
5:00 PM3.4
Moderate
6:00 PM1.5
Low
7:00 PM0.5
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)