What is the air quality like in Simi Valley?
Simi Valley has an average AQI of 58, which falls in the "Moderate" category. About 50% of days have Good air quality, 34% are Moderate, and 12% are Unhealthy for Sensitive Groups. The primary pollutant is Ozone.
What is the main pollutant in Simi Valley?
The primary pollutant in Simi Valley is Ozone. The city's average PM2.5 level is 10 μg/m³ (below the EPA annual standard of 12 μg/m³). Average ozone levels are 50 ppb. Major pollution sources include vehicles, santa susana field lab legacy, wildfires.
Is Simi Valley affected by wildfire smoke?
Simi Valley has a high wildfire risk rating. Wildfire smoke regularly impacts air quality, especially during summer and fall fire seasons.
How many good air quality days does Simi Valley have?
Approximately 50% of days in Simi Valley 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 Simi Valley'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.