Smoke Signal

Quiet until your air isn't.

Watches the air for one home location — AQI from EPA AirNow, smoke transport from NOAA HMS and HYSPLIT, active fires from InciWeb, and local air-district advisories. Files only when readings cross the line you set, or the next 72 hours are forecast to. Most days the briefing is one line confirming the air is fine. The days it isn't, you get a calibrated read instead of a dashboard. U.S. locations only, for now.