Air Quality

Pollution Air Quality Index AQI Pollution Levels Alerts Health Effects Wildfire Smoke Updates Advisories Air Quality Alerts

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

The projected surge would arrive weeks before the typical first 90-degree day in Las Vegas.

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

Air-Quality Alerts in Effect for Susquehanna Valley and Southern California

Air Quality Alerts Cover Capital Region and Mohawk Valley Through Thursday Night

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

Early February Heat Surges in Andhra Pradesh and Telangana, With Highs Near 35°C

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

South Korea Braces for Weekend Cold Wave With Dangerous Wind Chills and Localized Heavy Snow

Stagnant Air Prompts Ongoing Advisories in Oregon, Idaho and Arizona

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

RIVM Warns of Fine-Particle Smog Across Northern Netherlands on Sunday

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

Oregon Valleys Under Air Stagnation Advisory Through Sunday Morning

Unseasonal New Year Rains Sweep Mumbai, Briefly Reducing Visibility

Dense Fog Briefly Hides Taj Mahal as Viral Video Captures Near‑Zero Visibility

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

Cool Mornings, Clear Skies in Mumbai as AQI Hotspots Hit ‘Severe’

Cold Wave Persists in North Interior Karnataka as Mumbai and Bengaluru Record Unusually Cool Nights

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