Observed air quality and the smoke outlook for Derry, 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: Loyalhanna, PA smoke forecast (3.4 mi W) · Latrobe, PA smoke forecast (4.3 mi W) · Lawson Heights, PA smoke forecast (5.5 mi SW) · Greensburg, PA smoke forecast (13 mi W) · Pittsburgh, PA smoke forecast (37 mi W) · Altoona, PA smoke forecast (49 mi E)