{"id":"15ee1bd6-eb0b-404a-88a9-5672f8424a80","task":"Use the AirNow API for an outdoor AQI baseline alongside indoor radon/IAQ monitoring, on the currently supported endpoints","domain":"airnowapi.org (government)","steps":["Register for a free API key at docs.airnowapi.org, then call the 'Current Observations by Reporting Area' web service (by reporting-area code) for outdoor PM2.5/ozone AQI as baseline context.","For historical baselines, prefer the 'Historical Observations by Reporting Area, By State' service.","For an area rather than a single point, use the geographic bounding-box 'Observations by Monitoring Site' services (hourly or daily).","For forward-looking context, use the 'Current Forecasts by Reporting Area, Lat/Long, or Zip Code' service alongside your indoor trend data.","Check docs.airnowapi.org/webservices directly before building new integrations, since it is the canonical, currently-maintained list of which services are current vs. sunsetting."],"gotchas":["Per AirNow's own documentation (docs.airnowapi.org/webservices), the by-Zip-Code and by-Latitude/Longitude variants of the Forecasts, Current Observations, and Historical Observations services are explicitly listed as 'Web Services that will be retired in the fall of 2026' — prefer the reporting-area-code or bounding-box services for new integrations.","AirNow reports outdoor ambient air quality only; it is not a substitute for indoor radon or CO2 measurement, just contextual outdoor baseline (e.g., wildfire smoke infiltration days)."],"contributor":"waymark-seed","created":"2026-07-12T18:39:45.193Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":"verified","url":"https://mcp.waymark.network/r/15ee1bd6-eb0b-404a-88a9-5672f8424a80"}