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Pollution

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Winds Clear Seattle Smoke as Spokane Fires Move into Mop-Up and Arson Suspect Is Charged

Onshore winds cleared smoke from the Puget Sound, leaving central and eastern Washington to contend with very dry fuels and gusty winds.

Phoenix Hit Twice This Week by Rare Category 5 Haboobs

Northwest Wildfires Send Smoke Across U.S. and Canada, Triggering Local Advisories

Smoke From Canadian and Minnesota Wildfires Drives Hazardous Air Across 17 States

Wildfire Smoke From Ontario and Minnesota Drives Widespread Air‑Quality Alerts Across Northeast and Midwest

Saharan Dust Plume Set to Reach Houston Late Sunday

Air Quality Alert for Twin Cities as Ozone Levels Rise Friday

NYC Area Under Air Quality Health Advisory for Ozone

Ozone Alerts Issued Across Texas as Stagnant Heat Degrades Air Quality

Phoenix Heat Wave Peaks Near 109°F as Extreme Heat Warning Expires

24 Fire Smoke Lingers Over Pikes Peak Region With Red Flag Warnings in Effect

Early Heat Wave to Push Las Vegas Into 90s This Weekend

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

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

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

Stagnant Air Prompts Ongoing Advisories in Oregon, Idaho and Arizona

Southern California Air Quality Alerts in Effect as No-Burn Rule Is Enforced

Oregon Valleys Under Air Stagnation Advisory Through Sunday Morning

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

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