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Hourly Weather | Today › Thursday, December 11, 2025
Active Weather Warnings
San Francisco, California
2 PM
Cloudy Weather
54°
Feels Like 52°
0
Humidity: 75%
Wind: 9 mph
UV Index: 2
3 PM
Cloudy Weather
54°
Feels Like 50°
0
Humidity: 82%
Wind: 9 mph
UV Index: 1
4 PM
Cloudy Weather
52°
Feels Like 48°
0
Humidity: 89%
Wind: 8 mph
UV Index: 1
5 PM
Cloudy Night
52°
Feels Like 46°
0
Humidity: 94%
Wind: 8 mph
UV Index: 0
6 PM
Cloudy Night
48°
Feels Like 45°
0
Humidity: 98%
Wind: 8 mph
UV Index: 0
7 PM
Cloudy Night
48°
Feels Like 45°
0
Humidity: 100%
Wind: 8 mph
UV Index: 0
8 PM
Cloudy Night
45°
Feels Like 41°
0
Humidity: 96%
Wind: 7 mph
UV Index: 0
9 PM
Cloudy Night
46°
Feels Like 43°
0
Humidity: 100%
Wind: 7 mph
UV Index: 0
10 PM
Cloudy Night
45°
Feels Like 41°
0
Humidity: 94%
Wind: 8 mph
UV Index: 0
11 PM
Cloudy Night
46°
Feels Like 41°
0
Humidity: 93%
Wind: 7 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

2 PM
49 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 11.64 µg/m³
  • PM10: 19.55 µg/m³
  • O3: 0.035 ppm
  • NO2: 3.2 ppb
  • SO2: 0.6 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

3 PM
50 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 11.92 µg/m³
  • PM10: 19.44 µg/m³
  • O3: 0.036 ppm
  • NO2: 3.1 ppb
  • SO2: 0.6 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

4 PM
49 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 11.81 µg/m³
  • PM10: 18.8 µg/m³
  • O3: 0.036 ppm
  • NO2: 3.5 ppb
  • SO2: 0.6 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

5 PM
48 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 11.42 µg/m³
  • PM10: 17.93 µg/m³
  • O3: 0.036 ppm
  • NO2: 4 ppb
  • SO2: 0.6 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

6 PM
45 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 10.84 µg/m³
  • PM10: 17.1 µg/m³
  • O3: 0.034 ppm
  • NO2: 3.9 ppb
  • SO2: 0.6 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

7 PM
42 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 10.04 µg/m³
  • PM10: 16.34 µg/m³
  • O3: 0.033 ppm
  • NO2: 3.5 ppb
  • SO2: 0.6 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

8 PM
40 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 9.6 µg/m³
  • PM10: 16.11 µg/m³
  • O3: 0.032 ppm
  • NO2: 3.4 ppb
  • SO2: 0.6 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

9 PM
39 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 9.3 µg/m³
  • PM10: 15.8 µg/m³
  • O3: 0.030 ppm
  • NO2: 3.3 ppb
  • SO2: 0.6 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

10 PM
37 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 8.89 µg/m³
  • PM10: 15.22 µg/m³
  • O3: 0.028 ppm
  • NO2: 3.4 ppb
  • SO2: 0.6 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

11 PM
36 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 8.59 µg/m³
  • PM10: 14.78 µg/m³
  • O3: 0.027 ppm
  • NO2: 3.6 ppb
  • SO2: 0.6 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

Current Real-Time Air Quality Report

Weather Alerts and Warnings for San Francisco

Moderate Expected Likely

Beach Hazards Statement

Beach Hazards Statement issued December 11 at 5:02AM PST until December 12 at 10:00PM PST by NWS San Francisco CA
Dec 11, 5:02 AM → Dec 12, 10:00 PM
WHAT: Long period westerly swell will result in strong rip
currents, sneaker waves, and breaking waves of 12 to 16 feet.

WHERE: Pacific Ocean coast.

WHEN: Through Friday evening.

IMPACTS: Sneaker waves can unexpectedly run significantly
farther up the beach than normal, including over rocks and
jetties. Rip currents are typically stronger in the vicinity
of jetties, inlets, and piers.
+ Read More
Dangerous conditions are forecast along the shoreline. Hazards include sneaker waves, strong rip currents, and large breaking waves. Stay off the rocks and NEVER turn your back on the ocean!
Updated: Dec 11, 1:08 PM Source: NWS Alert