UV Index Today in San Francisco, California (CA)

Tuesday, April 7, 2026 - 1:53 AM PDT (GMT-7)

The UV Index in San Francisco, California (CA) right now is 0. This reading was last updated at 1:00 AM PDT, about 53 minutes ago. The UV Index at 2:00 AM PDT, in about 6 minutes from now, is expected to be 0.

The maximum UV Index today in San Francisco is expected to be 7.5 at 1:00 PM PDT, 11 hours and 6 minutes from now. The maximum UV Index tomorrow is expected to be 7.4 at 1:00 PM PDT.

Data Source: National Oceanic and Atmospheric Administration (NOAA)

Today

April 7
7.5
1:00 PM PDT
Very High

Tomorrow

April 8
7.4
1:00 PM PDT
High

UV Index Today Hourly

April 7

Data shows San Francisco, California (CA)'s UV Index climbing to 7.5 today, peaking at 1:00 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: 1:53 AM00.41.43.156.77.57.25.83.920.70.10
Data Source: National Oceanic and Atmospheric Administration (NOAA)

UV Index Tomorrow Hourly

April 8

The UV Index for San Francisco, California (CA) peaks at 7.4 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) 00.41.53.15.16.67.475.63.71.90.70.10
Data Source: National Oceanic and Atmospheric Administration (NOAA)

5 Day UV Index Forecast

April 6, 2026
Time UV Index Risk
12:00 AM 0
Low
1:00 AM 0
Low
2:00 AM 0
Low
3:00 AM 0
Low
4:00 AM 0
Low
5:00 AM 0
Low
6:00 AM 0
Low
7:00 AM 0
Low
8:00 AM 0.4
Low
9:00 AM 1.2
Low
10:00 AM 2.8
Moderate
11:00 AM 4.7
Moderate
12:00 PM 6.4
High
1:00 PM 7.2
High
2:00 PM 6.9
High
3:00 PM 5.6
High
4:00 PM 3.7
Moderate
5:00 PM 1.9
Low
6:00 PM 0.7
Low
7:00 PM 0.1
Low
8:00 PM 0
Low
9:00 PM 0
Low
10:00 PM 0
Low
11:00 PM 0
Low

April 7, 2026
Time UV Index Risk
12:00 AM 0
Low
1:00 AM 0
Low
2:00 AM 0
Low
3:00 AM 0
Low
4:00 AM 0
Low
5:00 AM 0
Low
6:00 AM 0
Low
7:00 AM 0
Low
8:00 AM 0.4
Low
9:00 AM 1.4
Low
10:00 AM 3.1
Moderate
11:00 AM 5
Moderate
12:00 PM 6.7
High
1:00 PM 7.5
Very High
2:00 PM 7.2
High
3:00 PM 5.8
High
4:00 PM 3.9
Moderate
5:00 PM 2
Low
6:00 PM 0.7
Low
7:00 PM 0.1
Low
8:00 PM 0
Low
9:00 PM 0
Low
10:00 PM 0
Low
11:00 PM 0
Low

April 8, 2026
Time UV Index Risk
12:00 AM 0
Low
1:00 AM 0
Low
2:00 AM 0
Low
3:00 AM 0
Low
4:00 AM 0
Low
5:00 AM 0
Low
6:00 AM 0
Low
7:00 AM 0
Low
8:00 AM 0.4
Low
9:00 AM 1.5
Low
10:00 AM 3.1
Moderate
11:00 AM 5.1
Moderate
12:00 PM 6.6
High
1:00 PM 7.4
High
2:00 PM 7
High
3:00 PM 5.6
High
4:00 PM 3.7
Moderate
5:00 PM 1.9
Low
6:00 PM 0.7
Low
7:00 PM 0.1
Low
8:00 PM 0
Low
9:00 PM 0
Low
10:00 PM 0
Low
11:00 PM 0
Low

April 9, 2026
Time UV Index Risk
12:00 AM 0
Low
1:00 AM 0
Low
2:00 AM 0
Low
3:00 AM 0
Low
4:00 AM 0
Low
5:00 AM 0
Low
6:00 AM 0
Low
7:00 AM 0
Low
8:00 AM 0.3
Low
9:00 AM 1.1
Low
10:00 AM 2
Low
11:00 AM 1.7
Low
12:00 PM 2.7
Moderate
1:00 PM 5.1
Moderate
2:00 PM 5.8
High
3:00 PM 4.9
Moderate
4:00 PM 3.2
Moderate
5:00 PM 1.7
Low
6:00 PM 0.7
Low
7:00 PM 0.1
Low
8:00 PM 0
Low
9:00 PM 0
Low
10:00 PM 0
Low
11:00 PM 0
Low

April 10, 2026
Time UV Index Risk
12:00 AM 0
Low
1:00 AM 0
Low
2:00 AM 0
Low
3:00 AM 0
Low
4:00 AM 0
Low
5:00 AM 0
Low
6:00 AM 0
Low
7:00 AM 0
Low
8:00 AM 0.4
Low
9:00 AM 1.4
Low
10:00 AM 3
Moderate
11:00 AM 4.8
Moderate
12:00 PM 6.4
High
1:00 PM 7.1
High
2:00 PM 6.6
High
3:00 PM 5
Moderate
4:00 PM 2.9
Moderate
5:00 PM 1.8
Low
6:00 PM 0.7
Low
7:00 PM 0.1
Low
8:00 PM 0
Low
9:00 PM 0
Low
10:00 PM 0
Low
11:00 PM 0
Low
Data Source: National Oceanic and Atmospheric Administration (NOAA)

Nearby Places

Maximum UV Index Today
Data Source: National Oceanic and Atmospheric Administration (NOAA)