Hourly Weather | Today Friday, September 18, 2026
Chico, California
8 AM
Sunny Weather
57°
Feels Like 61°
0
Humidity: 78%
UV Index: 1
Wind: 4 mph
9 AM
Sunny Weather
63°
Feels Like 66°
0
Humidity: 66%
UV Index: 2
Wind: 5 mph
10 AM
Sunny Weather
70°
Feels Like 72°
0
Humidity: 54%
UV Index: 3
Wind: 6 mph
11 AM
Sunny Weather
75°
Feels Like 79°
0
Humidity: 43%
UV Index: 4
Wind: 6 mph
12 PM
Sunny Weather
79°
Feels Like 84°
0
Humidity: 38%
UV Index: 5
Wind: 6 mph
1 PM
Sunny Weather
82°
Feels Like 88°
0
Humidity: 33%
UV Index: 5
Wind: 6 mph
2 PM
Sunny Weather
84°
Feels Like 90°
0
Humidity: 31%
UV Index: 5
Wind: 7 mph
3 PM
Sunny Weather
88°
Feels Like 90°
0
Humidity: 28%
UV Index: 4
Wind: 6 mph
4 PM
Sunny Weather
90°
Feels Like 91°
0
Humidity: 25%
UV Index: 3
Wind: 6 mph
5 PM
Sunny Weather
88°
Feels Like 90°
0
Humidity: 25%
UV Index: 2
Wind: 6 mph
6 PM
Sunny Weather
88°
Feels Like 86°
0
Humidity: 27%
UV Index: 1
Wind: 5 mph
7 PM
Sunny Weather
84°
Feels Like 82°
0
Humidity: 31%
UV Index: 0
Wind: 4 mph
8 PM
Night
81°
Feels Like 79°
0
Humidity: 37%
UV Index: 0
Wind: 2 mph
9 PM
Night
77°
Feels Like 75°
0
Humidity: 41%
UV Index: 0
Wind: 2 mph
10 PM
Night
73°
Feels Like 72°
0
Humidity: 45%
UV Index: 0
Wind: 4 mph
11 PM
Night
72°
Feels Like 70°
0
Humidity: 49%
UV Index: 0
Wind: 4 mph

Hourly Air Quality Forecast - AQI (US EPA)

8 AM
31 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 7.5 µg/m³
  • PM10: 14.17 µg/m³
  • O3: 0.011 ppm
  • NO2: 3.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.52 µg/m³
  • PM10: 14.14 µg/m³
  • O3: 0.010 ppm
  • NO2: 2.7 ppb
  • SO2: 0.1 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.43 µg/m³
  • PM10: 14 µg/m³
  • O3: 0.011 ppm
  • NO2: 2.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.43 µg/m³
  • PM10: 13.94 µg/m³
  • O3: 0.015 ppm
  • NO2: 2.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.8 µg/m³
  • PM10: 11.38 µg/m³
  • O3: 0.042 ppm
  • NO2: 0.8 ppb
  • SO2: 0.2 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.36 µg/m³
  • PM10: 10.16 µg/m³
  • O3: 0.046 ppm
  • NO2: 0.5 ppb
  • SO2: 0.2 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.3 µg/m³
  • PM10: 9.76 µg/m³
  • O3: 0.047 ppm
  • NO2: 0.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.28 µg/m³
  • PM10: 9.52 µg/m³
  • O3: 0.049 ppm
  • NO2: 0.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.19 µg/m³
  • PM10: 9.22 µg/m³
  • O3: 0.048 ppm
  • NO2: 0.5 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.96 µg/m³
  • PM10: 8.72 µg/m³
  • O3: 0.048 ppm
  • NO2: 0.6 ppb
  • SO2: 0.1 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.82 µg/m³
  • PM10: 8.35 µg/m³
  • O3: 0.046 ppm
  • NO2: 1 ppb
  • SO2: 0.1 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.89 µg/m³
  • PM10: 8.38 µg/m³
  • O3: 0.042 ppm
  • NO2: 1.8 ppb
  • SO2: 0.1 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.07 µg/m³
  • PM10: 8.62 µg/m³
  • O3: 0.039 ppm
  • NO2: 2.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.19 µg/m³
  • PM10: 8.77 µg/m³
  • O3: 0.035 ppm
  • NO2: 2.4 ppb
  • SO2: 0.1 ppb
  • CO: 0.14 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: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.39 µg/m³
  • PM10: 9.07 µg/m³
  • O3: 0.032 ppm
  • NO2: 2.8 ppb
  • SO2: 0.1 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.58 µg/m³
  • PM10: 9.36 µg/m³
  • O3: 0.029 ppm
  • NO2: 3 ppb
  • SO2: 0.1 ppb
  • CO: 0.15 ppm

Health Recommendations:

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