Today | Weather | Tuesday, November 11, 2025

Weather in San Francisco, California

05:31 PM
Now
Cloudy Night
61° F
Feels Like 57°
Precipitation 0 %
Wind 8 mph
Humidity 81 %
Today
Cloudy Weather
Day 70°
Night 57°
Precipitation 0 %
Wind 6 mph
UV Index (0 - 11+) 3

San Francisco Weather Forecast Updated

29 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (November 11, 2024)
Cloudy Night

Day

59°

Night

48°

Wind

7 mph

Precipitation

7 %

Air Quality in San Francisco

NOW
54 AQI
Moderate air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 14.02 µg/m³
PM10 23.79 µg/m³
O3 0.037 ppm
NO2 1.3 ppb
SO2 0.4 ppb
CO 0.11 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 acceptable; however, for some pollutants, there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.

Show raw pollutant concentrations (µg/m³)
PM2.514.02 µg/m³
PM1023.79 µg/m³
O372.1 µg/m³
NO22.36 µg/m³
SO21.01 µg/m³
CO127.55 µg/m³
NH30 µg/m³
NO0 µg/m³