What is the air quality like in Tacoma?
Tacoma has an average AQI of 44, which falls in the "Good" category. About 66% of days have Good air quality, 26% are Moderate, and 7% are Unhealthy for Sensitive Groups. The primary pollutant is PM2.5.
What is the main pollutant in Tacoma?
The primary pollutant in Tacoma is PM2.5. The city's average PM2.5 level is 7.5 μg/m³ (below the EPA annual standard of 12 μg/m³). Average ozone levels are 34 ppb. Major pollution sources include port, vehicles, pulp mills.
Is Tacoma affected by wildfire smoke?
Tacoma has a moderate wildfire risk rating. Occasional wildfire smoke events may temporarily degrade air quality.
How many good air quality days does Tacoma have?
Approximately 66% of days in Tacoma have Good air quality (AQI 0-50). This means the majority of the year has clean, breathable air.
When is pollen season in Tacoma's state (WA)?
Pollen seasons in WA include: Tree Pollen (February–May, High severity); Weed Pollen (July–October, Moderate severity); Grass Pollen (May–August, 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.