Hourly Weather | Today Friday, December 12, 2025
Fairfield, California
12 PM
Cloudy Weather
45°
Feels Like 43°
21
Humidity: 93%
Wind: 8 mph
UV Index: 1
1 PM
Cloudy Weather
48°
Feels Like 46°
0
Humidity: 88%
Wind: 8 mph
UV Index: 2
2 PM
Cloudy Weather
52°
Feels Like 48°
0
Humidity: 83%
Wind: 8 mph
UV Index: 2
3 PM
Cloudy Weather
50°
Feels Like 48°
0
Humidity: 89%
Wind: 7 mph
UV Index: 1
4 PM
Cloudy Weather
48°
Feels Like 46°
0
Humidity: 96%
Wind: 7 mph
UV Index: 0
5 PM
Cloudy Night
45°
Feels Like 43°
0
Humidity: 100%
Wind: 7 mph
UV Index: 0
6 PM
Cloudy Night
43°
Feels Like 39°
0
Humidity: 100%
Wind: 6 mph
UV Index: 0
7 PM
Cloudy Night
39°
Feels Like 37°
0
Humidity: 100%
Wind: 6 mph
UV Index: 0
8 PM
Cloudy Night
39°
Feels Like 37°
0
Humidity: 91%
Wind: 6 mph
UV Index: 0
9 PM
Cloudy Night
39°
Feels Like 37°
0
Humidity: 93%
Wind: 6 mph
UV Index: 0
10 PM
Cloudy Night
39°
Feels Like 36°
0
Humidity: 95%
Wind: 6 mph
UV Index: 0
11 PM
Cloudy Night
37°
Feels Like 36°
0
Humidity: 96%
Wind: 6 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

12 PM
105 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 37.5 µg/m³
  • PM10: 46.03 µg/m³
  • O3: 0.029 ppm
  • NO2: 18.5 ppb
  • SO2: 2 ppb
  • CO: 0.36 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

1 PM
111 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 39.67 µg/m³
  • PM10: 48.27 µg/m³
  • O3: 0.033 ppm
  • NO2: 19.1 ppb
  • SO2: 2 ppb
  • CO: 0.36 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

2 PM
113 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 40.76 µg/m³
  • PM10: 49.27 µg/m³
  • O3: 0.036 ppm
  • NO2: 19.8 ppb
  • SO2: 2.1 ppb
  • CO: 0.35 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

3 PM
114 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 40.85 µg/m³
  • PM10: 49.1 µg/m³
  • O3: 0.037 ppm
  • NO2: 20.7 ppb
  • SO2: 2 ppb
  • CO: 0.34 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

4 PM
111 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 39.96 µg/m³
  • PM10: 47.99 µg/m³
  • O3: 0.036 ppm
  • NO2: 23 ppb
  • SO2: 2 ppb
  • CO: 0.34 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

5 PM
110 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 39.35 µg/m³
  • PM10: 47.2 µg/m³
  • O3: 0.032 ppm
  • NO2: 25.7 ppb
  • SO2: 2 ppb
  • CO: 0.34 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

6 PM
110 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 39.59 µg/m³
  • PM10: 47.39 µg/m³
  • O3: 0.027 ppm
  • NO2: 25.5 ppb
  • SO2: 1.8 ppb
  • CO: 0.35 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

7 PM
114 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 40.94 µg/m³
  • PM10: 48.79 µg/m³
  • O3: 0.023 ppm
  • NO2: 25.5 ppb
  • SO2: 1.5 ppb
  • CO: 0.36 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

8 PM
118 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 42.7 µg/m³
  • PM10: 50.75 µg/m³
  • O3: 0.019 ppm
  • NO2: 26.9 ppb
  • SO2: 1.2 ppb
  • CO: 0.39 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

9 PM
123 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 44.63 µg/m³
  • PM10: 52.96 µg/m³
  • O3: 0.015 ppm
  • NO2: 29 ppb
  • SO2: 1 ppb
  • CO: 0.41 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

10 PM
127 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 46.1 µg/m³
  • PM10: 54.67 µg/m³
  • O3: 0.012 ppm
  • NO2: 30.9 ppb
  • SO2: 0.9 ppb
  • CO: 0.44 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

11 PM
129 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 47.03 µg/m³
  • PM10: 55.67 µg/m³
  • O3: 0.010 ppm
  • NO2: 32 ppb
  • SO2: 0.8 ppb
  • CO: 0.45 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.