A Spare the Air advisory has been issued in the Bay Area for Thursday as sweltering temperatures brew unhealthy smog levels in ground level air.
The Bay Area Air Quality Management District asks residents to minimize driving and other polluting activities and advises them to restrict outdoor exercise to the morning when smog concentrations are lowest.
Weather forecasters predict high temperatures in the upper 90s in some inland valleys and a high of 101 Thursday in Pleasanton, Livermore and Dublin. Thursday will mark the fifth Spare the Air advisory of the Bay Area summer season, and Friday could become the sixth.
Ozone, the active ingredient in smog, can irritate eyes, throats and the lining of lungs, and worsen asthma and emphysema.
Air pollution in seven Bay Area counties and parts of southern Solano and Sonoma counties is regulated by the air district. Visit sparetheair.org for more information.
Contact Erin Ivie at 925-847-2122. Follow her at Twitter.com/erin_ivie.