What is the air quality like in Chico?
Chico has an average AQI of 58, which falls in the "Moderate" category. About 50% of days have Good air quality, 32% are Moderate, and 14% are Unhealthy for Sensitive Groups. The primary pollutant is PM2.5.
What is the main pollutant in Chico?
The primary pollutant in Chico is PM2.5. The city's average PM2.5 level is 10.5 μg/m³ (below the EPA annual standard of 12 μg/m³). Average ozone levels are 42 ppb. Major pollution sources include wildfires, vehicles, agriculture.
Is Chico affected by wildfire smoke?
Chico has a very high wildfire risk rating. Wildfire smoke frequently degrades air quality, sometimes pushing AQI into unhealthy ranges for extended periods.
How many good air quality days does Chico have?
Approximately 50% of days in Chico have Good air quality (AQI 0-50). Residents experience Good air quality about half the time, with other days being Moderate or worse.
When is pollen season in Chico's state (CA)?
Pollen seasons in CA include: Grass Pollen (April–July, High severity); Tree Pollen (February–May, High severity); Weed Pollen (July–November, Moderate severity); Mold Spores (Year-round–Year-round, Moderate severity). Allergy sufferers should monitor pollen counts during these periods and consider staying indoors on high-pollen days, especially during morning hours when counts peak.