Unhealthy Air Quality Alert Issued for Parts of California
• The EPA has issued an air quality alert for parts of California due to high levels of PM2.5 pollution.
• Affected areas include Portola, Sierra Valley, Plumas National Forest, Mammoth Lakes, and Mono Lake.
• Residents are advised to limit outdoor activities and take precautions to minimize exposure to PM2.5.
EPA issues air quality alert for California
The Environmental Protection Agency (EPA) has issued an air quality alert for specific regions in California due to elevated levels of fine particulate matter, known as PM2.5. The alert, effective as of February 22, 2026, at 4:30 a.m. ET, highlights unhealthy air quality in areas including Portola, Cromberg, Sattley, the Sierra Valley, the Plumas National Forest, Mammoth Lakes, Mono Lake, Whitmore Hot Springs, and the Silver Divide. PM2.5 particles, less than 2.5 micrometers in diameter, pose significant health risks as they can be inhaled deeply into the lungs and enter the bloodstream.
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