Air Quality Index (AQI) Assessment

Location: Downtown Seattle, WA | Urban Environment

142

Unhealthy for Sensitive Groups

Updated: July 15, 2023 - 2:30 PM

Active children and adults, and people with respiratory disease, such as asthma, should limit prolonged outdoor exertion.

Sensitive individuals should consider reducing or rescheduling strenuous activities until air quality improves.

PM2.5 (μg/m³)

35.2 Moderate

PM10 (μg/m³)

78.4 Moderate

O3 (ppb)

89.3 Unhealthy

NO2 (ppb)

52.1 Good

SO2 (ppb)

18.7 Good

CO (ppb)

1240 Good

PM2.5 (35.2 μg/m³) 23% above standard

Ozone (89.3 ppb) 34% above standard

PM10 (78.4 μg/m³) 12% above standard

Children: Limit outdoor play during peak pollution hours (10am-4pm)
Elderly: Stay indoors with windows closed, use air purifiers if available
Respiratory conditions: Keep medication readily available, consider wearing N95 masks outdoors
Pregnant women: Reduce prolonged outdoor exposure, especially in high traffic areas

Stay indoors with windows closed during peak pollution hours

Use air purifiers with HEPA filters if available

Reschedule outdoor activities for early morning or evening

Wear N95 masks when outdoors if you have respiratory conditions

Air Quality Calculator