Today | Weather | Saturday, September 5, 2026

Active Weather Warnings

Beach Hazards Statement

Weather in San Francisco, California

04:13 PM

Now

66° F

Feels Like 66°

Precipitation 0 %

Wind 17 mph

UV Index (0 - 11+) 4

Humidity 75 %

Today

Day 70°

Night 57°

Precipitation 0 %

Wind 10 mph

UV Index (0 - 11+) 7

San Francisco Weather Forecast Updated

22 minutes ago

Last updated on September 05, 2026 at 3:50 PM

Weather Forecast History

Last Year's Weather on This Day (September 5, 2025)

Day

66°

Night

59°

Wind

12 mph

Precipitation

0 %

Air Quality in San Francisco

NOW

40 AQI

Good air quality Dominant pollutant: O₃

Pollutant Concentrations:

PM_2.5 2.57 µg/m³

PM₁₀ 7.78 µg/m³

O₃ 0.044 ppm

NO₂ 0.2 ppb

SO₂ 0.3 ppb

CO 0.15 ppm

NH₃ 0 µg/m³

NO 0.07 µg/m³

PM_2.5 – 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)

PM_2.5 – 2.57 µg/m³

PM₁₀ – 7.78 µg/m³

O₃ – 85.7 µg/m³

NO₂ – 0.34 µg/m³

SO₂ – 0.7 µg/m³

CO – 170.35 µg/m³

NH₃ – 0 µg/m³

NO – 0.07 µg/m³

View Hourly Air Quality Forecast

Weather Alerts and Warnings for San Francisco

Moderate Expected Likely

Beach Hazards Statement

Beach Hazards Statement issued September 5 at 10:37AM PDT until September 7 at 11:00PM PDT by NWS San Francisco CA

Sep 5, 10:37 AM → Sep 7, 11:00 PM

WHAT: Increased risk of sneaker waves and strong rip currents
due to incoming long period southerly swell associated with
tropical activity in the Eastern Pacific Ocean. Breaking waves
to around 10 feet expected.

WHERE: Pacific Coast beaches.

WHEN: Through 11 PM PDT Monday.

IMPACTS: Dangerous conditions are forecast along the shoreline.
Hazards include sneaker waves, strong rip currents, and large
breaking waves.

+ 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: Sep 5, 3:50 PM Source: NWS Alert