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Air Pollution

Asthma Health Disparities Unhealthy Air Ozone Wildfire Smoke Effects Health Recommendations Smoking Preventive Measures Precautionary Measures Emissions Standards Guidance for Vulnerable Populations Health Risks Haze Exposure Vulnerable Populations

Spare the Air Alerts Issued for Bay Area Weekend

Hot, still conditions are forecast to boost ground‑level ozone and raise health risks across the region.

Indonesia Expands Firefighting Operations as President Pushes for Stricter Sanctions

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

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