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

Stagnant air under a temperature inversion is trapping fine particle pollution near the surface.

Winter Smog Persists Over Eastern and Northern Germany, With PM Limits Breached in Saxony and Lower Saxony

Germany Records Widespread PM2.5 Breaches as Rain and Wind Bring Partial Relief

Germany Faces Weekend of Poor Air as UBA Issues Health Warning

California Air Quality Alerts Persist as 'Unhealthy' PM2.5 Prompts Stay-Home Guidance

Barcelona Air Pollution Hits Record Lows as City Nears EU 2030 NO2 Goal

California Air Quality Advisory Persists as PM2.5 Reaches Unhealthy Levels in Select Areas

Report Finds 18 Spanish Cities Over New EU NO2 Limit, Four Years From Deadline

Viral Mumbai Video Shows N95 Over AQI Monitor Dropping Reading to 37

South Coast AQMD Extends No-Burn Order as NWS Keeps Air-Quality Alerts Through Monday

Tanker Suspected in Rotterdam After Odor, Noise Complaints Reach The Hague

Delhi’s Air Quality Falls to ‘Very Poor’ as Winter Smog Sets In, With Lahore Showing November Gains

Smog Mars Mumbai’s Cool Mornings as AQI Turns Unhealthy, Hotspots Severe

Mystery Stench in Karlstein Persists as Authorities Expand Cross-Border Probe

DEQ Issues Air Quality Advisory for Deschutes, Northern Klamath Through Wednesday

Lahore High Court Orders Province-Wide Crackdown, Bars Smoke-Belching Vehicles From Lahore for Two Weeks

AirParif Finds Paris Ring Road Measures Cut NO2, Traffic and Noise

Delhi Logs Cleanest January–September Air Since 2018, Excluding Lockdown Year

Large European Study Links Long-Term PM10 Exposure to More Severe Sleep Apnea

Heat and Wildfire Smoke Keep Multi-State Air Quality Alerts in Effect