Today | Weather | Saturday, June 20, 2026
Active Weather Warnings

Weather in San Francisco, California

08:32 PM
Now
Cloudy Night
59° F
Feels Like 54°
Precipitation 0 %
Wind 13 mph
Humidity 82 %
Today
Cloudy Night
Day 68°
Night 55°
Precipitation 0 %
Wind 9 mph

San Francisco Weather Forecast Updated

47 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (June 20, 2025)
Cloudy Weather

Day

63°

Night

52°

Wind

22 mph

UV Index

11

Precipitation

2 %

Air Quality in San Francisco

NOW
38 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.94 µg/m³
PM10 6.25 µg/m³
O3 0.041 ppm
NO2 0.3 ppb
SO2 0.2 ppb
CO 0.08 ppm
NH3 0 µg/m³
NO 0 µg/m³
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide
NH3 – Ammonia
NO – Nitric oxide

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)
PM2.52.94 µg/m³
PM106.25 µg/m³
O380.64 µg/m³
NO20.63 µg/m³
SO20.64 µg/m³
CO86.2 µg/m³
NH30 µg/m³
NO0 µg/m³

Weather Alerts and Warnings for San Francisco

Moderate Expected Likely

Beach Hazards Statement

Beach Hazards Statement issued June 20 at 2:00PM PDT until June 24 at 5:00PM PDT by NWS San Francisco CA
Jun 20, 2:00 PM Jun 24, 5:00 PM
WHAT: An increased risk of sneaker waves and strong rip
currents expected.

WHERE: Pacific Coast beaches.

WHEN: Through Wednesday afternoon.

IMPACTS: Dangerous swimming and surfing conditions and
localized beach erosion can be expected. Sneaker waves can
sweep across the shoreline without warning, pulling people
into the sea from rocks, jetties and beaches.
+ Read More
Stay off of jetties, piers, rocks, and other waterside infrastructure. Remain out of the water to avoid hazardous surf and NEVER turn your back on the ocean. Monitor local weather, surf and tide forecasts at www.weather.gov/mtr.
Updated: Jun 20, 7:44 PM Source: NWS Alert