Notably, the air quality in some of these areas has been pretty bad for a minute. Here's a snapshot of air quality history for a sensor in Fresno and another in Bakersfield. Note the timeline towards the bottom of the pop-ups. pic.twitter.com/bS82lVrDUv

Really poor air quality in Bakersfield, Fresno, Sacramento and the Bay Area this morning -- limit your outdoor activity today and consider choosing cleaner transportation options. pic.twitter.com/pdUTyD7Isv

We have to do better. Cc: Great reporting @theodorejay @mmfa. twitter.com/_waleedshahid/…

"The new study found that a one-year increase in pollution exposure of 10,000 nanoparticles per cubic centimetre – the approximate difference between quiet and busy city streets – increased the risk of brain cancer by more than 10%." theguardian.com/environment/2…

Looks like @GavinNewsom has joined our boycott...and then some! Thank you Governor! calmatters.org/environment/20…

Strong move by @GavinNewsom to hold automakers accountable and move the electric vehicle needle even further! calmatters.org/environment/20…

GM, Toyota, Fiat Chrysler and Hyundai joined Trump to sue California for our clean air laws. Ford, BMW, and Honda came to the table to continue moving toward cleaner cars. Join us in boycotting these companies who decided to prioritize profit over climate and public health. pic.twitter.com/C15gYrlxFS

@LARiverCEE @Metrolink @metrolosangeles @MayorOfLA @GavinNewsom @EAPDLA There are a few sensors in that area - ccair.org/clear/air-qual… pic.twitter.com/Wv3q9yX2Ze

@awalkerinLA To anyone in this thread who hasn't seen your piece from last fall yet, please read! curbed.com/a/texas-califo…

An inversion layer in the atmosphere explains why air quality in LA has been so bad all month, but it isn't to blame for pollution in the first place. Transportation accounts for 95% of CA particulate emissions. If you don't *have* to drive alone, don't. laist.com/2019/11/06/air…