Reverse Geocode Coordinates to Address (OpenStreetMap + NWS)

Use this endpoint when you have GPS coordinates and need a human-readable address or structured address components — especially useful for US locations where NWS city/state enrichment is needed for weather lookups. Prefer this over forward geocoding when you already have coordinates and need the address, not the other way around. Works worldwide via OpenStreetMap Nominatim.

• Coordinates fall in an ocean or unpopulated area with no nearby address in Nominatim — may return partial or empty result
• Latitude out of range [-90, 90] or longitude out of range [-180, 180] — returns validation error
• NWS enrichment unavailable for non-US coordinates — NWS fields omitted but base address still returned
• Nominatim rate limit or upstream timeout — returns 5xx error
• Missing required lat or lon query parameter — returns 400 error