Environment ❯ Air Quality ❯ Pollution

Particulate Matter

PM2.5 Health Effects PM10 Health Risks PM2.5 and PM10 PM 2.5 AQI PM2.5 Levels Health Impacts Wildfire Smoke Wildfires Regulations Public Health Fireworks Impact Urban Pollution PM10 and PM2.5 Delhi Ozone PM 2.5 Levels Health Impact PM2.5 and PM10 Levels Feinstaub Code Orange Alert Urban Air Pollution PM-10 PM 2.5 and PM 10 Levels Dust Mitigation Air Quality Index Gaseous Pollutants Green Crackers Impact Assessment Aerosols Sulfur Compounds Toxic Air PM10 Levels Stubble Burning Emission Sources Smog Towers Dust Control AQI Levels PM10 and PM2.5 Levels Monitoring Sources of Emissions Citizen Science Residential Wood Burning Construction Pollution PM10 Concentrations Wildfire Particulates PM10 and PM2.5 Concentrations Cloud Seeding Health Effects of Pollution Fine Particulate Matter Inversions Fine Dust AQI Statistics Sources of Pollution Effects on Health Saharan Dust Policy Initiatives Dust Storms Mumbai Air Pollution Fireworks Soot Haze Regulatory Measures PM 10 Monitoring Stations Impact of Fires on Air Quality PM-2.5 Dust Intrusion Artificial Rain Winter Smog Artificial Rainfall

Code Orange Air Quality Alerts Remain in Effect Across Southeastern and Central Pennsylvania

A temperature inversion with light winds is trapping fine particles near the surface, with a Friday cold front expected to disperse the stagnant air.

Philadelphia Launches Breathe Philly, Citywide Real-Time Air Quality Network

Massive U.S. Study Links Fine-Particle Pollution to Higher Alzheimer’s Risk

Code Orange Air Quality Alerts Continue in Parts of Pennsylvania, Extending Into Thursday in Some Areas

Bay Area Issues Thursday Spare the Air Alert, Bans Wood and Solid-Fuel Burning

Salt Lake City Leads U.S. Air Pollution for Second Day as Inversion Persists

Arizona Opens New Year Fireworks Window With Strict Limits on Devices, Hours and Locations

Cornell Study: PM2.5 Fell 22% in Manhattan’s Congestion Zone in First Six Months

Code Orange Air Quality Alert in Susquehanna Valley Today Through Midnight

Air Pollution Substantially Weakens Exercise’s Longevity Benefit, Global Analysis Finds

Bay Area Enacts Two-Day Spare the Air Alert Through Thanksgiving With Wood-Burning Ban

New Studies Tie Fine Air Pollution to Worsening Alzheimer’s Pathology and Increased Hospitalization for Lewy Body–Related Dementia

New National Map Links U.S. Animal Feeding Operations to Elevated PM2.5 Levels and Vulnerable Communities

Canadian Wildfire Smoke Keeps Northeast Under Health Advisories for Second Day

Wildfire Smoke Triggers Widespread Air Quality Alerts Across Upper Midwest