UV Index Today in San Francisco, California (CA)

Saturday, August 29, 2026 -9:47 AM PDT (GMT-7)

The UV Index in San Francisco, California (CA) right now is 1.6. This reading was last updated at 9:00 AM PDT, about 47 minutes ago. The UV Index at10:00 AM PDT, in about 12 minutes from now, is expected to be 3.3.

The maximum UV Index today in San Francisco is expected to be 7.6 at 1:00 PM PDT,3 hours and 12 minutes from now. The maximum UV Index tomorrow is expected to be 7.2 at 1:00 PM PDT.

Data Source: National Oceanic and Atmospheric Administration (NOAA)

Today

August 29
7.6
1:00 PM PDT
Very High

Tomorrow

August 30
7.2
1:00 PM PDT
High

UV Index Today Hourly

August 29

Data shows San Francisco, California (CA)'s UV Index climbing to 7.6 today, peaking at1:00 PM PDT under Very High conditions.

02468107 AM8 AM9 AM10 AM11 AM12 PM1 PM2 PM3 PM4 PM5 PM6 PM7 PM8 PMPacific Daylight Time (PDT, GMT-7)Now: 9:47 AM00.51.63.35.477.66.85.83.920.80.20
Data Source: National Oceanic and Atmospheric Administration (NOAA)

UV Index Tomorrow Hourly

August 30

The UV Index for San Francisco, California (CA) peaks at 7.2 tomorrow at 1:00 PM PDT, classified as High risk.

02468107 AM8 AM9 AM10 AM11 AM12 PM1 PM2 PM3 PM4 PM5 PM6 PM7 PM8 PMPacific Daylight Time (PDT, GMT-7)00.41.22.656.67.26.95.73.920.70.10
Data Source: National Oceanic and Atmospheric Administration (NOAA)

5 Day UV Index Forecast

August 28, 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 AM0.1
Low
9:00 AM0.2
Low
10:00 AM1.1
Low
11:00 AM1
Low
12:00 PM0.9
Low
1:00 PM1.1
Low
2:00 PM1.1
Low
3:00 PM3.2
Moderate
4:00 PM3.8
Moderate
5:00 PM2.1
Low
6:00 PM0.8
Low
7:00 PM0.2
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

August 29, 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 AM3.3
Moderate
11:00 AM5.4
Moderate
12:00 PM7
High
1:00 PM7.6
Very High
2:00 PM6.8
High
3:00 PM5.8
High
4:00 PM3.9
Moderate
5:00 PM2
Low
6:00 PM0.8
Low
7:00 PM0.2
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

August 30, 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 AM0.4
Low
9:00 AM1.2
Low
10:00 AM2.6
Moderate
11:00 AM5
Moderate
12:00 PM6.6
High
1:00 PM7.2
High
2:00 PM6.9
High
3:00 PM5.7
High
4:00 PM3.9
Moderate
5:00 PM2
Low
6:00 PM0.7
Low
7:00 PM0.1
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

August 31, 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 AM0.3
Low
9:00 AM0.8
Low
10:00 AM1.8
Low
11:00 AM3.2
Moderate
12:00 PM5.3
Moderate
1:00 PM6.9
High
2:00 PM7.1
High
3:00 PM5.6
High
4:00 PM3.8
Moderate
5:00 PM1.9
Low
6:00 PM0.7
Low
7:00 PM0.1
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

September 1, 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 AM0.2
Low
9:00 AM0.7
Low
10:00 AM2.2
Low
11:00 AM3
Moderate
12:00 PM4.7
Moderate
1:00 PM7.5
Very High
2:00 PM7
High
3:00 PM5.5
High
4:00 PM3.7
Moderate
5:00 PM1.8
Low
6:00 PM0.6
Low
7:00 PM0.1
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)