Bay Area air will be unhealthy Tuesday and Wednesday, prompting the Bay Area Air Quality Management District to extend a Spare the Air alert for smog.
The district said inland temperatures in the 100s and a weak afternoon sea breeze, along with motor vehicle exhaust, will create elevated concentrations of ozone, or smog.
Ozone pollution is particularly harmful for young children, seniors and those with respiratory and heart conditions. The agency said people should exercise outdoors only in the early morning hours when ozone concentrations are lower.
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.
To find out when a Spare the Air Alert is in effect, residents can register for email AirAlerts at sparetheair.org, call 1(800) HELP-AIR, download the Spare the Air App or connect with Spare the Air on Facebook or Twitter.
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