Los Angeles, California – Residents across Los Angeles County are being warned to limit outdoor activity as dangerous ozone smog levels grip the region through at least 8 p.m. Thursday. The alert covers a wide area, including the San Fernando and San Gabriel Valleys, Santa Clarita Valley, and Los Angeles beaches, with the greatest health risk in the afternoons and early evenings.
According to the South Coast Air Quality Management District, ozone pollution has reached levels considered “Unhealthy for Sensitive Groups” and may worsen to “Unhealthy” or higher. Sensitive groups—including children, seniors, pregnant individuals, and anyone with asthma or lung disease—are urged to avoid prolonged or strenuous outdoor activity. When air quality enters the red (unhealthy) range, even healthy adults may experience symptoms such as coughing or difficulty breathing.
Communities such as Burbank, Glendale, Pasadena, Santa Clarita, Long Beach, and Reseda are among those impacted. Local schools, outdoor camps, and sports organizations should consider moving activities indoors. Drivers and outdoor workers are also advised to reduce time outside and wear high-quality masks if needed.
To reduce exposure, keep windows and doors closed, use air conditioning or an air purifier, and avoid burning candles or grilling. Residents can help minimize ozone levels by delaying use of gas-powered lawn equipment and postponing trips to the gas station until after sundown.
This alert remains in effect until at least 8 p.m. Thursday, with updates possible as air quality changes. Check real-time air quality at aqmd.gov or local agency sites.
