Viewing a single comment thread. View all comments

E_Pluribus_Omnom t1_j1xvt4r wrote

Reply to comment by Inert_Uncle_858 in From purpleair.com: Eastern Pennsylvania has MUCH worse air quality than Western Pennsylvania tonight. by Extreme_Qwerty

It's a measurement based on these 5 major pollutants; ground-level ozone, particle pollution, carbon monoxide, sulfur dioxide, nitrogen dioxide.

Philadelphia definitely has visible smog.

23

Wuz314159 t1_j1ylqrh wrote

CO & NO2 are high right now as per Windy. Particulates aren't too good either.

2