[rampant_ai]

A lot of it too is the fireworks themselves. Turns out having millions of people lighting them almost constantly for several hours in an area that had little wind all night and is surrounded by mountains affects the air quality.

Rancho Cucamonga is over 300 AQI (hazardous) this morning.

https://www.ocregister.com/2023/07/04/officials-warn-of-poor...