Air Quality in Chico, United States

Windy
35.5°C · 15.4% humidity
35.5°
Feels 35.5°
53
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
2 stations

Nearby Monitoring Stations

AQI Forecast
24 11am
24
24
53 2pm
45
39
35 5pm
32
29
28 8pm
27
26
26 11pm
26
26
26 2am
25
27
27 5am
27
27
27 8am
27
27
AD 728×90

Air Quality Index Trend

46h · 4 stn

Chico's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration. Current PM2.5 concentration in Chico is 2.6× the WHO annual guideline of 5 µg/m³.

15.4%
Humidity
41.1 km/h
Wind N
1015.0 hPa
Pressure
17.4
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
53
12.97 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Chico?

Temperature & Precipitation

PM2.5 Trend

46h · 4 stations
PM2.512.97 µg/m³ ✓ WHO
Moderate
PM1013.7 µg/m³
Good
UV INDEX17.4
Extreme
AD 300×250
Station readings (2 stations within 25 km)
12.97
Median
12.97
Average
3.84
Low
22.1
High
PM2.5 µg/m³ · Model: 5.8 · Bias: -7.2

What is the 7-day forecast for Chico?

05-28
31.7° 10.9°
05-29
35.5° 13.5°
05-30
30.2° 18.5°
05-31
40.5° 21.8°
06-01
41.5° 16.1°
06-02
36.7° 14.2°
06-03
35.5° 8.6°
Both models agree Avg diff: 4.6°C

Where are air quality stations near Chico?

16
Chico - East Avenue Collocation 2
3.7 km PM2.5: 3.8 µg/m³
16
Chico - East Avenue Collocation 1
3.7 km PM2.5: 3.8 µg/m³
47
Chico - East Avenue, Butte, California
3.7 km PM2.5: 11.3 µg/m³

What cities are near Chico?

53 Paradise 25 Oroville 56 Yuba City 46 South Yuba City 27 Linda 24 Redding 12 Clearlake 60 Rocklin 42 Woodland 22 Rio Linda
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-05-28T21:46 UTC.