Hourly Weather | Today Friday, September 18, 2026
Antioch, California
4 AM
Night
59°
Feels Like 55°
0
Humidity: 86%
UV Index: 0
Wind: 8 mph
5 AM
Cloudy Night
57°
Feels Like 55°
0
Humidity: 92%
UV Index: 0
Wind: 8 mph
6 AM
Cloudy Night
57°
Feels Like 55°
0
Humidity: 94%
UV Index: 0
Wind: 8 mph
7 AM
Cloudy Weather
57°
Feels Like 54°
0
Humidity: 96%
UV Index: 0
Wind: 7 mph
8 AM
Sunny Weather
59°
Feels Like 59°
0
Humidity: 86%
UV Index: 1
Wind: 7 mph
9 AM
Sunny Weather
64°
Feels Like 64°
0
Humidity: 76%
UV Index: 2
Wind: 7 mph
10 AM
Sunny Weather
70°
Feels Like 70°
0
Humidity: 66%
UV Index: 3
Wind: 8 mph
11 AM
Sunny Weather
72°
Feels Like 75°
0
Humidity: 58%
UV Index: 4
Wind: 8 mph
12 PM
Sunny Weather
75°
Feels Like 81°
0
Humidity: 49%
UV Index: 5
Wind: 8 mph
1 PM
Sunny Weather
81°
Feels Like 82°
0
Humidity: 42%
UV Index: 6
Wind: 9 mph
2 PM
Sunny Weather
82°
Feels Like 84°
0
Humidity: 37%
UV Index: 5
Wind: 9 mph
3 PM
Sunny Weather
84°
Feels Like 86°
0
Humidity: 34%
UV Index: 4
Wind: 10 mph
4 PM
Sunny Weather
86°
Feels Like 86°
0
Humidity: 32%
UV Index: 3
Wind: 12 mph
5 PM
Sunny Weather
84°
Feels Like 84°
0
Humidity: 33%
UV Index: 2
Wind: 12 mph
6 PM
Sunny Weather
82°
Feels Like 81°
0
Humidity: 36%
UV Index: 1
Wind: 12 mph
7 PM
Sunny Weather
79°
Feels Like 75°
0
Humidity: 43%
UV Index: 0
Wind: 10 mph
8 PM
Night
75°
Feels Like 72°
0
Humidity: 51%
UV Index: 0
Wind: 10 mph
9 PM
Night
72°
Feels Like 70°
0
Humidity: 56%
UV Index: 0
Wind: 9 mph
10 PM
Night
70°
Feels Like 66°
0
Humidity: 63%
UV Index: 0
Wind: 9 mph
11 PM
Night
66°
Feels Like 64°
0
Humidity: 68%
UV Index: 0
Wind: 8 mph

Hourly Air Quality Forecast - AQI (US EPA)

4 AM
34 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.76 µg/m³
  • PM10: 15.51 µg/m³
  • O3: 0.037 ppm
  • NO2: 1.3 ppb
  • SO2: 0.3 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

5 AM
34 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.9 µg/m³
  • PM10: 15.73 µg/m³
  • O3: 0.036 ppm
  • NO2: 1.3 ppb
  • SO2: 0.3 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

6 AM
33 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 7.01 µg/m³
  • PM10: 15.88 µg/m³
  • O3: 0.035 ppm
  • NO2: 1.4 ppb
  • SO2: 0.3 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

7 AM
32 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 7.11 µg/m³
  • PM10: 16.44 µg/m³
  • O3: 0.035 ppm
  • NO2: 1.6 ppb
  • SO2: 0.4 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

8 AM
32 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 7.15 µg/m³
  • PM10: 16.98 µg/m³
  • O3: 0.035 ppm
  • NO2: 1.8 ppb
  • SO2: 0.4 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

9 AM
32 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 7.11 µg/m³
  • PM10: 17.18 µg/m³
  • O3: 0.035 ppm
  • NO2: 2.1 ppb
  • SO2: 0.5 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

10 AM
32 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 7.05 µg/m³
  • PM10: 17.1 µg/m³
  • O3: 0.035 ppm
  • NO2: 2.3 ppb
  • SO2: 0.5 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

11 AM
34 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 7.03 µg/m³
  • PM10: 17.05 µg/m³
  • O3: 0.037 ppm
  • NO2: 2.1 ppb
  • SO2: 0.6 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

12 PM
38 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 7.28 µg/m³
  • PM10: 17.4 µg/m³
  • O3: 0.041 ppm
  • NO2: 1.7 ppb
  • SO2: 0.6 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

1 PM
42 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 7.83 µg/m³
  • PM10: 17.95 µg/m³
  • O3: 0.046 ppm
  • NO2: 1.2 ppb
  • SO2: 0.5 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

2 PM
46 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 8.28 µg/m³
  • PM10: 18.19 µg/m³
  • O3: 0.049 ppm
  • NO2: 0.8 ppb
  • SO2: 0.5 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

3 PM
47 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 8.17 µg/m³
  • PM10: 17.56 µg/m³
  • O3: 0.051 ppm
  • NO2: 0.6 ppb
  • SO2: 0.4 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

4 PM
47 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 7.96 µg/m³
  • PM10: 17.07 µg/m³
  • O3: 0.051 ppm
  • NO2: 0.6 ppb
  • SO2: 0.4 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

5 PM
47 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 7.8 µg/m³
  • PM10: 16.86 µg/m³
  • O3: 0.051 ppm
  • NO2: 0.7 ppb
  • SO2: 0.4 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

6 PM
46 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 7.6 µg/m³
  • PM10: 16.69 µg/m³
  • O3: 0.050 ppm
  • NO2: 0.9 ppb
  • SO2: 0.4 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

7 PM
45 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 7.24 µg/m³
  • PM10: 16.29 µg/m³
  • O3: 0.048 ppm
  • NO2: 1.2 ppb
  • SO2: 0.4 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

8 PM
44 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.75 µg/m³
  • PM10: 15.65 µg/m³
  • O3: 0.047 ppm
  • NO2: 1.1 ppb
  • SO2: 0.4 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

9 PM
43 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.28 µg/m³
  • PM10: 15.04 µg/m³
  • O3: 0.047 ppm
  • NO2: 1.1 ppb
  • SO2: 0.4 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

10 PM
43 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.99 µg/m³
  • PM10: 14.83 µg/m³
  • O3: 0.047 ppm
  • NO2: 1.1 ppb
  • SO2: 0.4 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

11 PM
43 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.74 µg/m³
  • PM10: 14.82 µg/m³
  • O3: 0.046 ppm
  • NO2: 1 ppb
  • SO2: 0.4 ppb
  • CO: 0.14 ppm

Health Recommendations:

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