What is the air quality like in Houston?
Houston has an average AQI of 68, which falls in the "Moderate" category. About 40% of days have Good air quality, 42% are Moderate, and 14% are Unhealthy for Sensitive Groups. The primary pollutant is Ozone.
What is the main pollutant in Houston?
The primary pollutant in Houston is Ozone. The city's average PM2.5 level is 11.5 μg/m³ (below the EPA annual standard of 12 μg/m³). Average ozone levels are 50 ppb. Major pollution sources include petrochemical refineries, vehicles, shipping.
Is Houston affected by wildfire smoke?
Houston has a low wildfire risk rating. Wildfire smoke rarely impacts air quality here.
How many good air quality days does Houston have?
Approximately 40% of days in Houston 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 Houston's state (TX)?
Pollen seasons in TX include: Weed Pollen (August–November, High severity); Tree Pollen (January–April, Very High severity); Grass Pollen (March–September, High severity); Mold Spores (Year-round–Year-round, High 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.