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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.

Air Stagnation Persists Across Oregon as NWS Adds Dense, Freezing Fog Advisories

Los Angeles County Added as Southland Air-Quality Alerts Continue With No-Burn Order

L.A. County Air Quality Alert Extended Through Tuesday as No‑Burn Order Continues

Air Quality Alerts in Southern California With No-Burn Order in Effect

Code Orange Air Quality Alert in Susquehanna Valley Today Through Midnight

Southern California Air Quality Alert Extended Into Saturday With No-Burn Day In Effect

Code Orange Air Quality Alert Issued for Greater Pittsburgh Today

Multi-State Air Quality Alerts Urge Drivers to Stay Off Roads as Ozone, Smoke Spike

Smoke and Ozone Alerts Through Monday in Oregon as Flat Fire Drives Unhealthy Air

Lingering Showers and Flood Watches Sweep Chicagoland Early Sunday

Canadian Wildfire Smoke Sustains Unhealthy Air Quality in Midwest and Northeast

Canadian Wildfire Smoke Extends Air Quality Alerts Across Midwest and Northeast

Midwest Remains Under Air Quality Alerts as Canadian Wildfire Smoke Lingers

Smoke From Canadian Wildfires Keeps Minnesota and Michigan Under Air Quality Alerts

Wildfire Smoke Triggers Widespread Air Quality Alerts Across Upper Midwest

Rain Eases Drought in Chicago as Fog and Wildfire Haze Linger

Steady Rain Breaks Chicago’s 62-Day Dry Spell