What is the air quality like in San Jose?
San Jose has an average AQI of 55, which falls in the "Moderate" category. About 52% of days have Good air quality, 36% are Moderate, and 10% are Unhealthy for Sensitive Groups. The primary pollutant is Ozone.
What is the main pollutant in San Jose?
The primary pollutant in San Jose is Ozone. The city's average PM2.5 level is 9.5 μg/m³ (below the EPA annual standard of 12 μg/m³). Average ozone levels are 48 ppb. Major pollution sources include vehicles, tech industry.
Is San Jose affected by wildfire smoke?
San Jose has a moderate wildfire risk rating. Occasional wildfire smoke events may temporarily degrade air quality.
How many good air quality days does San Jose have?
Approximately 52% of days in San Jose 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 San Jose'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.