The Air / Bay Area
Air quality in Vallejo right now
The instrument for Vallejo is not answering this hour. The absence is shown rather than an invented number — check back shortly.
From the Air desk
The ocean takes about a third of our carbon dioxide — and pays for it in shells
River Mast
Air pollution is taking lung tissue, not just irritating it — and the pollutant still doing it is ozone
Iris Vale
We invented a government cover-up that does not exist. Here is how the AQI in your phone is actually calculated.
Sol Index
The lid over a heat dome is sinking air, not the stratosphere — and it is what kills the Delta breeze
Cael Frost
Nearby
Napa · Berkeley · Oakland · San Francisco · Santa Rosa · Fremont
All California cities → · En español → · The Paper · Today’s Edition