For Chiang Mai, compare available noise readings with roads, local events and complaint records. Check where monitors are placed. Data from one part of the city may not describe the sound near your hotel.
Check where, when and how the sound was measured. A station reading, complaint and model each provide different evidence. Road, aircraft and workplace noise can also use different measures. Use the linked references to understand the record before applying it to a room or street.
Official Pollution Control Department ambient-noise monitoring surface with station codes, area type, update time, Leq 24hr, hourly Leq, Lmin, Lmax, and station detail views. Daily station data is presented as preliminary monitoring data.
Access: Public monitoring dashboard and station pages; no documented bulk public JSON API verified. Updates: Current station snapshots with hourly and daily context where stations report.
Historical daily average Leq data from Pollution Control Department noise-monitoring stations, typically published as yearly CSV files for nationwide station records.
Access: CKAN dataset with CSV download resources. Updates: Daily to yearly publication depending resource release.
Geospatial enrichment for man_made=monitoring_station with monitoring:noise tagging, useful for mapping public or private noise-monitoring locations and nearby source context.
Access: OpenStreetMap Overpass API and ODbL geospatial data. Updates: Current community-edited data.
Check the place, date, and coverage before using the information for a current plan.