Observed air quality and the smoke outlook for Downingtown, PA: when smoke arrives, how bad it gets, when it clears — with the fires nearby and a live local map. Forecasts from NOAA, NASA, and ECCC models, checked hourly against real monitors and satellites.
Nearby: Thorndale, PA smoke forecast (2.4 mi SW) · Eagleview, PA smoke forecast (3.8 mi N) · Lionville, PA smoke forecast (4.0 mi NE) · Wayne, PA smoke forecast (17 mi E) · Philadelphia, PA smoke forecast (29 mi E) · Baltimore, MD smoke forecast (69 mi SW)