Hourly Weather | Today Wednesday, March 18, 2026
Chico, California
4 AM
Night
57°
Feels Like 55°
0
Humidity: 75%
UV Index: 0
Wind: 5 mph
5 AM
Night
55°
Feels Like 55°
0
Humidity: 75%
UV Index: 0
Wind: 5 mph
6 AM
Night
54°
Feels Like 54°
0
Humidity: 75%
UV Index: 0
Wind: 5 mph
7 AM
Night
54°
Feels Like 54°
0
Humidity: 76%
UV Index: 0
Wind: 5 mph
8 AM
Cloudy Weather
57°
Feels Like 59°
0
Humidity: 74%
UV Index: 1
Wind: 4 mph
9 AM
Sunny Weather
63°
Feels Like 66°
0
Humidity: 61%
UV Index: 2
Wind: 4 mph
10 AM
Sunny Weather
70°
Feels Like 73°
0
Humidity: 54%
UV Index: 3
Wind: 4 mph
11 AM
Sunny Weather
75°
Feels Like 81°
0
Humidity: 47%
UV Index: 4
Wind: 4 mph
12 PM
Sunny Weather
79°
Feels Like 84°
0
Humidity: 41%
UV Index: 5
Wind: 4 mph
1 PM
Sunny Weather
82°
Feels Like 88°
0
Humidity: 38%
UV Index: 5
Wind: 5 mph
2 PM
Sunny Weather
84°
Feels Like 90°
0
Humidity: 36%
UV Index: 5
Wind: 5 mph
3 PM
Sunny Weather
86°
Feels Like 90°
0
Humidity: 34%
UV Index: 4
Wind: 5 mph
4 PM
Sunny Weather
88°
Feels Like 90°
0
Humidity: 33%
UV Index: 3
Wind: 5 mph
5 PM
Sunny Weather
88°
Feels Like 88°
0
Humidity: 34%
UV Index: 2
Wind: 5 mph
6 PM
Sunny Weather
84°
Feels Like 84°
0
Humidity: 38%
UV Index: 1
Wind: 5 mph
7 PM
Sunny Weather
81°
Feels Like 79°
0
Humidity: 45%
UV Index: 0
Wind: 5 mph
8 PM
Night
77°
Feels Like 75°
0
Humidity: 54%
UV Index: 0
Wind: 5 mph
9 PM
Night
73°
Feels Like 72°
0
Humidity: 58%
UV Index: 0
Wind: 5 mph
10 PM
Night
72°
Feels Like 68°
0
Humidity: 60%
UV Index: 0
Wind: 5 mph
11 PM
Night
68°
Feels Like 66°
0
Humidity: 63%
UV Index: 0
Wind: 5 mph

Hourly Air Quality Forecast - AQI (US EPA)

4 AM
23 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 5.47 µg/m³
  • PM10: 7.25 µg/m³
  • O3: 0.020 ppm
  • NO2: 3.5 ppb
  • SO2: 0.1 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.93 µg/m³
  • PM10: 7.68 µg/m³
  • O3: 0.021 ppm
  • NO2: 3.4 ppb
  • SO2: 0.1 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

6 AM
26 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 6.19 µg/m³
  • PM10: 7.89 µg/m³
  • O3: 0.022 ppm
  • NO2: 3.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

7 AM
27 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 6.36 µg/m³
  • PM10: 8.03 µg/m³
  • O3: 0.023 ppm
  • NO2: 3.1 ppb
  • SO2: 0.1 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.37 µg/m³
  • PM10: 8.15 µg/m³
  • O3: 0.023 ppm
  • NO2: 3.6 ppb
  • SO2: 0.1 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.69 µg/m³
  • PM10: 7.6 µg/m³
  • O3: 0.020 ppm
  • NO2: 3.8 ppb
  • SO2: 0.1 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.67 µg/m³
  • PM10: 6.63 µg/m³
  • O3: 0.018 ppm
  • NO2: 3.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.82 µg/m³
  • PM10: 6.77 µg/m³
  • O3: 0.019 ppm
  • NO2: 2.7 ppb
  • SO2: 0.1 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.09 µg/m³
  • PM10: 6.56 µg/m³
  • O3: 0.040 ppm
  • NO2: 1.1 ppb
  • SO2: 0.1 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.45 µg/m³
  • PM10: 7.92 µg/m³
  • O3: 0.044 ppm
  • NO2: 0.7 ppb
  • SO2: 0.1 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.88 µg/m³
  • PM10: 9.39 µg/m³
  • O3: 0.046 ppm
  • NO2: 0.6 ppb
  • SO2: 0.1 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.54 µg/m³
  • PM10: 6.6 µg/m³
  • O3: 0.047 ppm
  • NO2: 0.4 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.75 µg/m³
  • PM10: 5.7 µg/m³
  • O3: 0.046 ppm
  • NO2: 0.4 ppb
  • SO2: 0.1 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.74 µg/m³
  • PM10: 5.74 µg/m³
  • O3: 0.046 ppm
  • NO2: 0.5 ppb
  • SO2: 0.1 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.17 µg/m³
  • PM10: 6.39 µg/m³
  • O3: 0.040 ppm
  • NO2: 1.5 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 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: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.67 µg/m³
  • PM10: 7.21 µg/m³
  • O3: 0.031 ppm
  • NO2: 3.3 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
25 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 6.02 µg/m³
  • PM10: 7.89 µg/m³
  • O3: 0.025 ppm
  • NO2: 4.9 ppb
  • SO2: 0.1 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.28 µg/m³
  • PM10: 8.4 µg/m³
  • O3: 0.022 ppm
  • NO2: 5.6 ppb
  • SO2: 0.1 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.49 µg/m³
  • PM10: 8.79 µg/m³
  • O3: 0.021 ppm
  • NO2: 5.8 ppb
  • SO2: 0.1 ppb
  • CO: 0.16 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: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 6.58 µg/m³
  • PM10: 8.99 µg/m³
  • O3: 0.020 ppm
  • NO2: 5.8 ppb
  • SO2: 0.1 ppb
  • CO: 0.16 ppm

Health Recommendations:

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