UV Index Today in San Francisco, California (CA)

Saturday, August 8, 2026 -9:52 AM PDT (GMT-7)

The UV Index in San Francisco, California (CA) right now is 1.9. This reading was last updated at 9:00 AM PDT, about 52 minutes ago. The UV Index at10:00 AM PDT, in about 7 minutes from now, is expected to be 3.9.

The maximum UV Index today in San Francisco is expected to be 8.6 at 2:00 PM PDT,4 hours and 7 minutes from now. The maximum UV Index tomorrow is expected to be 9 at 1:00 PM PDT.

Data Source: National Oceanic and Atmospheric Administration (NOAA)

Today

August 8
8.6
2:00 PM PDT
Very High

Tomorrow

August 9
9
1:00 PM PDT
Very High

UV Index Today Hourly

August 8

Data shows San Francisco, California (CA)'s UV Index climbing to 8.6 today, peaking at2:00 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: 9:52 AM00.10.71.93.95.97.78.48.67.14.92.71.10.30
Data Source: National Oceanic and Atmospheric Administration (NOAA)

UV Index Tomorrow Hourly

August 9

The UV Index for San Francisco, California (CA) peaks at 9 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)00.20.82.24.26.68.498.674.72.71.10.30
Data Source: National Oceanic and Atmospheric Administration (NOAA)

5 Day UV Index Forecast

August 7, 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 AM1.7
Low
10:00 AM3.7
Moderate
11:00 AM5.9
High
12:00 PM8
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 PM2.6
Moderate
6:00 PM1.1
Low
7:00 PM0.3
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

August 8, 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 AM1.9
Low
10:00 AM3.9
Moderate
11:00 AM5.9
High
12:00 PM7.7
Very High
1:00 PM8.4
Very High
2:00 PM8.6
Very High
3:00 PM7.1
High
4:00 PM4.9
Moderate
5:00 PM2.7
Moderate
6:00 PM1.1
Low
7:00 PM0.3
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

August 9, 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 AM0.8
Low
9:00 AM2.2
Low
10:00 AM4.2
Moderate
11:00 AM6.6
High
12:00 PM8.4
Very High
1:00 PM9
Very High
2:00 PM8.6
Very High
3:00 PM7
High
4:00 PM4.7
Moderate
5:00 PM2.7
Moderate
6:00 PM1.1
Low
7:00 PM0.3
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

August 10, 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 AM0.7
Low
9:00 AM1.9
Low
10:00 AM3.7
Moderate
11:00 AM5.8
High
12:00 PM7.6
Very High
1:00 PM8.5
Very High
2:00 PM8.4
Very High
3:00 PM6.8
High
4:00 PM4.7
Moderate
5:00 PM2.6
Moderate
6:00 PM1.1
Low
7:00 PM0.3
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

August 11, 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 AM3.8
Moderate
11:00 AM5.9
High
12:00 PM7.8
Very High
1:00 PM8.7
Very High
2:00 PM8.4
Very High
3:00 PM7.1
High
4:00 PM4.9
Moderate
5:00 PM2.5
Moderate
6:00 PM1
Low
7:00 PM0.3
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)