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Map markers show temperature/dewpoint. Click a marker for a compact station card; use Details for the full drill-down.
Colors: green = VFR, yellow = MVFR, red = IFR/LIFR, purple = TS/VCTS/LTG.
Data source: NOAA Aviation Weather Center METAR API, relayed through a lightweight Cloudflare Worker for browser compatibility. Temperature history requests use a 12-hour METAR window. Map view uses Leaflet and OpenStreetMap tiles. Map marker colors use aviation category, with purple reserved for explicit TS/VCTS/LTG. Forecast uses the NWS hourly point forecast route through the Worker. Ceiling is computed from the lowest BKN, OVC, or VV layer; category is computed from ceiling and visibility; METAR weather codes are decoded for quick scanning. Wind text uses the METAR “from” convention; the compass pointer shows flow direction. The bar fills to sustained wind speed, and a “G” marker shows gust speed when present.