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A number that looks wrong, a town we are missing, or a question about what any of it means.
Before you write
A number looks wrong. Check the timestamp on the forecast first — every page shows when its run was issued, and a stale run is flagged in orange. Then compare against AirNow, which reports measured readings rather than a forecast. The two disagreeing is normal and expected; a forecast is not a measurement.
My town is missing. Tell us and we will add it. Coverage is the continental United States.
How does any of this work? The method page walks through the whole chain in plain language.
When is the app out? There is no date yet. Leave your email on the app page and you will get exactly one message when it ships.