In a highly unusual move, the Bay Area Air Quality Management District has issued a smog health alert for tomorrow, Wednesday, the third day in a row. Residents are urged not to drive and to avoid vigorous outdoor exercise except in the early morning.

© El Cerrito Patch
Bay Area smog levels are expected to be unhealthy again tomorrow, Wednesday, for the third day in a row, according the region's air quality monitoring agency.
"It is extremely rare for 3 alerts to be called in a row!" Nick Tiano, a communications consultant for the Bay Area Air Quality Management District, said in an email.
"Air quality in the Bay Area is forecast to be unhealthy for the third day in a row tomorrow, Wednesday, September 21," according to a district news release.
"This late seasonal hot spell is expected to create conditions for unhealthy air quality for the third day in a row," Jack Broadbent, executive officer of the agency, said in a statement. "We're urging everyone to make clean air choices, such as taking public transportation, reducing energy use, and refraining from using gas-powered lawn equipment, to keep pollution levels down."
The agency advises against outdoor vigorous exercise on Spare the Air days, except in the early morning hours when ground ozone levels are lower. Wood-burning is banned on such days.