Bay Area air quality from thousands of fireworks explosions on and around July 4 reached dangerously unhealthful levels in some local neighborhoods, according to air-quality data.
Bay Area air quality from thousands of fireworks explosions on and around July 4 reached dangerously unhealthful levels in some local neighborhoods, according to air-quality data.
Bay Area air quality from thousands of fireworks explosions on and around July 4 reached dangerously unhealthful levels in some local neighborhoods, according to air-quality data.