Where is the smoke in San Mateo coming from? While wildfires are among the most prominent causes of elevated pollution levels in San Mateo, woodburning also plays a prominent role. As many homes burn wood for heat during winter and early spring, smoke levels rise.
Why is it smoky in San Mateo? The increasing incidence of wildfires in or near San Mateo County fueled by hotter summers due in part to climate change also negatively impact San Mateo air quality. Wildfires can cause a sudden and rapid rise in unhealthy particle pollution in San Mateo.
Does the Bay Area have good air quality? The Bay Area’s air quality is substantially better than a few decades ago, according to a Chronicle analysis of air pollution levels over two decades. But the increasingly large and frequent wildfires in the region have contributed to unhealthy air quality, especially in historically dry years, such as 2020.
Is it a Spare the Air Day in San Mateo County? There is no Spare the Air Alert in effect.