Different instruments. One honest answer.
We check the sky and the air near the ground separately, because smoke up high does not always reach the people below.
- Refresh rhythm
- Air and weather check in throughout the day. The smoke map gets a fresh look when NOAA posts one.
- Important limit
- Smoke can change from one neighborhood to the next, so this check cannot describe every corner of the Philadelphia-Camden-Wilmington, PA-NJ-DE-MD.
- Sources used here
- NOAA Hazard Mapping System · satellite-observed smoke · AirNow · participating air agencies · US AQI · National Weather Service · hourly weather and alerts · NIFC WFIGS · current interagency fire perimeters