Environment ❯ Air Quality ❯ Air Pollution

Particulate Matter

Health Effects PM2.5 Respiratory Health PM2.5 Sources Health Risks Exposure Disparities Health Effects of Air Pollution Health Impacts

Code Orange Air Quality Alerts in Effect for Allegheny County and South-Central Pennsylvania Through This Evening

Officials cite a temperature inversion with light winds trapping fine particles near the ground.

Las Vegas Issues Dust Advisory as Strong Southerly Winds Hit Tuesday