From purpleair.com: Eastern Pennsylvania has MUCH worse air quality than Western Pennsylvania tonight.Wuz314159 t1_j1ylqrh wrote
Reply to comment by E_Pluribus_Omnom in From purpleair.com: Eastern Pennsylvania has MUCH worse air quality than Western Pennsylvania tonight. by Extreme_Qwerty
CO & NO2 are high right now as per Windy. Particulates aren't too good either.
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