What is the air quality like in Portland?
Portland has an average AQI of 55, which falls in the "Moderate" category. About 52% 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 Portland?
The primary pollutant in Portland 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 44 ppb. Major pollution sources include refineries, chemical plants, vehicles.
Is Portland affected by wildfire smoke?
Portland has a low wildfire risk rating. Wildfire smoke rarely impacts air quality here.
How many good air quality days does Portland have?
Approximately 52% of days in Portland 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 Portland'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.