Hourly Weather | Today Wednesday, December 24, 2025
Active Weather Warnings
Chico, California
4 PM
Cloudy Weather
57°
Feels Like 54°
34
Humidity: 73%
Wind: 9 mph
UV Index: 0
5 PM
Cloudy Night
55°
Feels Like 50°
34
Humidity: 75%
Wind: 12 mph
UV Index: 0
6 PM
Cloudy Weather
54°
Feels Like 46°
40
Humidity: 80%
Wind: 15 mph
UV Index: 0
7 PM
Rainy Weather
54°
Feels Like 43°
84
Humidity: 82%
Wind: 15 mph
UV Index: 0
8 PM
Rainy Weather
54°
Feels Like 41°
84
Humidity: 87%
Wind: 17 mph
UV Index: 0
9 PM
Rainy Weather
54°
Feels Like 41°
84
Humidity: 87%
Wind: 18 mph
UV Index: 0
10 PM
Rainy Weather
54°
Feels Like 41°
84
Humidity: 89%
Wind: 20 mph
UV Index: 0
11 PM
Rainy Weather
54°
Feels Like 41°
84
Humidity: 89%
Wind: 20 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 1.69 µg/m³
  • PM10: 3.65 µg/m³
  • O3: 0.041 ppm
  • NO2: 3.7 ppb
  • SO2: 0.4 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.85 µg/m³
  • PM10: 3.37 µg/m³
  • O3: 0.038 ppm
  • NO2: 4.7 ppb
  • SO2: 0.4 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2 µg/m³
  • PM10: 3.09 µg/m³
  • O3: 0.034 ppm
  • NO2: 5.5 ppb
  • SO2: 0.4 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.03 µg/m³
  • PM10: 2.87 µg/m³
  • O3: 0.030 ppm
  • NO2: 6 ppb
  • SO2: 0.4 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: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.8 µg/m³
  • PM10: 2.44 µg/m³
  • O3: 0.027 ppm
  • NO2: 5.9 ppb
  • SO2: 0.3 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.36 µg/m³
  • PM10: 1.84 µg/m³
  • O3: 0.026 ppm
  • NO2: 5 ppb
  • SO2: 0.3 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.94 µg/m³
  • PM10: 1.34 µg/m³
  • O3: 0.028 ppm
  • NO2: 3.7 ppb
  • SO2: 0.2 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: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.66 µg/m³
  • PM10: 1.02 µg/m³
  • O3: 0.032 ppm
  • NO2: 2.5 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

Weather Alerts and Warnings for Chico

Severe Expected Likely

High Wind Warning

High Wind Warning issued December 24 at 9:24AM PST until December 25 at 4:00PM PST by NWS Sacramento CA
Dec 24, 9:24 AM Dec 25, 4:00 PM
WHAT: South winds 25 to 35 mph with gusts up to 60 mph expected.

WHERE: Carquinez Strait and Delta, Sacramento Valley, Motherlode,
Northeast Foothills, and Northern San Joaquin Valley.

WHEN: Until 4 PM PST Thursday.

IMPACTS: Strong winds and saturated soils could blow down trees
and power lines resulting in widespread power outages. Strong
winds will cause impacts to loose and unsecured items, including
temporary structures and holiday decorations. Difficult travel
conditions are expected, especially for high profile vehicles.

ADDITIONAL DETAILS: Lull in activity through today, with strong
wind gusts expected tonight into Thursday.
+ Read More
Watch for falling debris and tree limbs. Use caution if you must drive. Take time now to prepare for potential power outages.
Updated: Dec 24, 2:38 PM Source: NWS Alert
Severe Future Possible

Flood Watch

Flood Watch issued December 24 at 1:19PM PST until December 26 at 4:00PM PST by NWS Sacramento CA
Dec 24, 1:19 PM Dec 26, 4:00 PM
A series of warm atmospheric rivers will bring moderate to heavy
rain to the Valley, foothills, and mountains the week of Christmas.
The prolonged period of rain will bring the risk of flooding to the
Sacramento Valley, northern San Joaquin Valley, northern Sierra
Nevada and adjacent foothills, as well as the Coastal Range.

WHAT: Flooding caused by excessive rainfall continues to be
possible.

WHERE: A portion of northern California, including the following
areas, Carquinez Strait and Delta, Sacramento Valley, Motherlode,
Mountains Southwestern Shasta County to Western Colusa County,
Northeast Foothills, Northern San Joaquin Valley, and Shasta Lake
Area / Northern Shasta County .

WHEN: Through Friday afternoon.

IMPACTS: Excessive runoff will result in rises along area rivers,
creeks, streams. Small streams and creeks may rise out of their
banks. Flooding may occur in low-lying, poor drainage, and urban
areas. Mudslides and rockslides may occur in mountain and foothill
areas.

ADDITIONAL DETAILS:
- Periods of moderate to heavy rain are forecast the week of
Christmas. Debris flows are not expected over recent burn
scars in northern California, but do anticipate enhanced
runoff in/below scars.
- http://www.weather.gov/safety/flood
+ Read More
You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.
Updated: Dec 24, 2:38 PM Source: NWS Alert
Severe Future Possible

High Wind Watch

High Wind Watch issued December 22 at 10:25AM PST until December 26 at 4:00PM PST by NWS Sacramento CA
Dec 23, 4:00 PM Dec 26, 4:00 PM
WHAT: South winds 25 to 35 mph with gusts up to 60 mph possible.

WHERE: Carquinez Strait and Delta, Sacramento Valley, Motherlode,
Northeast Foothills, and Northern San Joaquin Valley.

WHEN: From Tuesday afternoon through Friday afternoon.

IMPACTS: Strong winds and saturated soils could blow down trees
and power lines resulting in widespread power outages. Strong
winds may cause impacts to unsecured items, including temporary
structures and holiday decorations. Travel could be difficult,
especially for high profile vehicles.

ADDITIONAL DETAILS: Strongest wind gusts expected in the northern
Sacramento Valley and adjacent foothills on Wednesday.
+ Read More
Monitor the latest forecasts and warnings for updates.
Updated: Dec 23, 3:37 AM Source: NWS Alert