For the third day in a row, the Bay Area Air Quality Management District is declaring today a Spare the Air day.
Spare the Air days are issued when the air quality could be hazardous, especially for children or people with respiratory problems. Monday's light winds and hot temperatures combined will enhance concentrations of ground-level ozone pollution.
District officials are asking people to reduce their smog by driving as little as possible and carpooling or postponing errands.
Anyone with breathing problems should try to stay inside as much as possible.