{"success":true,"forecast":{"2026-08-06":5.2,"2026-08-07":5,"2026-08-08":5,"2026-08-09":5,"2026-08-10":5.1,"2026-08-11":5.1,"2026-08-12":5.2},"uncertainty_pm25":2,"method":"7-day baseline with damped 7-vs-previous-7 trend","confidence":"low","caveat":"Baseline projection only; it does not use a meteorological or chemical transport model."}