Heat is coming to the Bay Area this weekend, and so is worse air quality.
The Bay Area Air Quality Management District issued a "Spare the Air" alert for Saturday, with smog in the East Bay set to make the air unhealthy for sensitive groups.
Officials called for Bay Area residents to limit driving and avoid outdoor exercise during the hottest part of Saturday.
The National Weather Service on Friday updated its weekend forecast to include almost all of the Bay Area in an excessive heat warning or heat advisory. Cal ISO, the state’s power grid regulator, also issued a Flex Alert for Friday afternoon and evening.
The air quality management district’s eastern zone, consisting of parts of Alameda and Contra Costa counties, is projected to have an air quality of 101. Only the northern zone, which includes cities in Napa and Sonoma counties, is projected to have “good” air quality on Saturday.
Since air quality crossed 100 in one of the district’s zones, a “Spare the Air” alert was issued.
The district has, so far, issued two alerts this year: One amid a heat wave on Memorial Day, and another in the middle of June as record-setting temperatures hit much of the Bay Area. Only the second alert was extended to multiple days.
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