Hourly Weather | Today Wednesday, October 22, 2025
Chico, California
4 AM
Cloudy Night
55°
Feels Like 54°
40
Humidity: 69%
Wind: 6 mph
UV Index: 0
5 AM
Cloudy Night
55°
Feels Like 55°
17
Humidity: 73%
Wind: 5 mph
UV Index: 0
6 AM
Cloudy Night
54°
Feels Like 54°
17
Humidity: 79%
Wind: 5 mph
UV Index: 0
7 AM
Cloudy Night
55°
Feels Like 54°
18
Humidity: 79%
Wind: 5 mph
UV Index: 0
8 AM
Cloudy Weather
55°
Feels Like 55°
20
Humidity: 81%
Wind: 5 mph
UV Index: 2
9 AM
Cloudy Weather
57°
Feels Like 57°
20
Humidity: 76%
Wind: 5 mph
UV Index: 8
10 AM
Cloudy Weather
61°
Feels Like 63°
20
Humidity: 69%
Wind: 5 mph
UV Index: 13
11 AM
Cloudy Weather
64°
Feels Like 68°
20
Humidity: 62%
Wind: 6 mph
UV Index: 18
12 PM
Cloudy Weather
68°
Feels Like 70°
20
Humidity: 57%
Wind: 6 mph
UV Index: 21
1 PM
Cloudy Weather
70°
Feels Like 72°
13
Humidity: 54%
Wind: 7 mph
UV Index: 22
2 PM
Cloudy Weather
72°
Feels Like 72°
0
Humidity: 53%
Wind: 7 mph
UV Index: 21
3 PM
Cloudy Weather
73°
Feels Like 73°
0
Humidity: 52%
Wind: 7 mph
UV Index: 19
4 PM
Cloudy Weather
72°
Feels Like 72°
0
Humidity: 55%
Wind: 7 mph
UV Index: 15
5 PM
Cloudy Weather
70°
Feels Like 70°
0
Humidity: 58%
Wind: 7 mph
UV Index: 10
6 PM
Cloudy Weather
66°
Feels Like 64°
0
Humidity: 65%
Wind: 7 mph
UV Index: 2
7 PM
Cloudy Night
64°
Feels Like 63°
0
Humidity: 75%
Wind: 7 mph
UV Index: 0
8 PM
Cloudy Night
63°
Feels Like 61°
0
Humidity: 83%
Wind: 7 mph
UV Index: 0
9 PM
Cloudy Night
61°
Feels Like 59°
0
Humidity: 86%
Wind: 6 mph
UV Index: 0
10 PM
Night
57°
Feels Like 57°
0
Humidity: 89%
Wind: 5 mph
UV Index: 0
11 PM
Night
57°
Feels Like 57°
0
Humidity: 92%
Wind: 5 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

4 AM
59 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 16.36 µg/m³
  • PM10: 22.36 µg/m³
  • O3: 0.025 ppm
  • NO2: 1.8 ppb
  • SO2: 0.2 ppb
  • CO: 0.15 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

5 AM
57 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 15.42 µg/m³
  • PM10: 21.49 µg/m³
  • O3: 0.024 ppm
  • NO2: 1.7 ppb
  • SO2: 0.2 ppb
  • CO: 0.14 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

6 AM
55 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 14.38 µg/m³
  • PM10: 20.49 µg/m³
  • O3: 0.024 ppm
  • NO2: 1.7 ppb
  • SO2: 0.2 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

7 AM
53 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 13.3 µg/m³
  • PM10: 19.29 µg/m³
  • O3: 0.024 ppm
  • NO2: 2 ppb
  • SO2: 0.2 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

8 AM
51 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 12.33 µg/m³
  • PM10: 18.3 µg/m³
  • O3: 0.024 ppm
  • NO2: 2.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.14 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

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

Pollutant Concentrations:

  • PM2.5: 11.54 µg/m³
  • PM10: 17.95 µg/m³
  • O3: 0.026 ppm
  • NO2: 3 ppb
  • SO2: 0.2 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

10 AM
46 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 11.05 µg/m³
  • PM10: 18.01 µg/m³
  • O3: 0.028 ppm
  • NO2: 3.1 ppb
  • SO2: 0.2 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

11 AM
44 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 10.48 µg/m³
  • PM10: 17.44 µg/m³
  • O3: 0.030 ppm
  • NO2: 2.6 ppb
  • SO2: 0.3 ppb
  • CO: 0.13 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: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 9.19 µg/m³
  • PM10: 15.23 µg/m³
  • O3: 0.037 ppm
  • NO2: 1.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.19 µg/m³
  • PM10: 13.68 µg/m³
  • O3: 0.041 ppm
  • NO2: 0.9 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.57 µg/m³
  • PM10: 12.95 µg/m³
  • O3: 0.043 ppm
  • NO2: 0.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.74 µg/m³
  • PM10: 12.32 µg/m³
  • O3: 0.045 ppm
  • NO2: 0.5 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.52 µg/m³
  • PM10: 12.7 µg/m³
  • O3: 0.044 ppm
  • NO2: 0.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.47 µg/m³
  • PM10: 13.31 µg/m³
  • O3: 0.042 ppm
  • NO2: 0.8 ppb
  • SO2: 0.2 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.6 µg/m³
  • PM10: 13.73 µg/m³
  • O3: 0.037 ppm
  • NO2: 1.8 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.86 µg/m³
  • PM10: 14.13 µg/m³
  • O3: 0.030 ppm
  • NO2: 2.9 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.04 µg/m³
  • PM10: 14.44 µg/m³
  • O3: 0.026 ppm
  • NO2: 3.5 ppb
  • SO2: 0.1 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.07 µg/m³
  • PM10: 14.41 µg/m³
  • O3: 0.022 ppm
  • NO2: 3.5 ppb
  • SO2: 0.1 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.12 µg/m³
  • PM10: 14.31 µg/m³
  • O3: 0.020 ppm
  • NO2: 3.5 ppb
  • SO2: 0.1 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.13 µg/m³
  • PM10: 14.02 µg/m³
  • O3: 0.019 ppm
  • NO2: 3.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.12 ppm

Health Recommendations:

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