Air District issues Spare the Air Alert for Tuesday

Air quality is forecast to be unhealthy tomorrow, Tuesday, September 23. High inland temperatures, along with motor vehicle exhaust, will create elevated concentrations of ozone, or smog, especially in the Santa Clara Valley.

Spare the Air Alerts are issued when ozone pollution is forecast to reach unhealthy levels. Ozone can cause throat irritation, congestion and chest pain. It can trigger asthma, inflame the lining of the lungs, and worsen bronchitis and emphysema. Long-term exposure can reduce lung function. Ozone pollution is particularly harmful for young children, seniors, and those with respiratory and heart conditions. When a Spare the Air Alert is issued, outdoor exercise should be undertaken only in the early morning hours when ozone concentrations are lower.

Bay Area residents can find out if a Spare the Air Alert is in effect by:

• Signing up for text alerts by texting the word “START” to the number 81757
• Calling 1-877-4NO-BURN
• Visiting www.sparetheair.org or www.baaqmd.gov
• Signing up for e-mail alerts at www.sparetheair.org/alerts
• Downloading the Spare the Air iPhone or Android app

View the press release(247 Kb PDF, 1 pg, posted 22/09/2025).