Overall and regional PSI data (24-hr PSI, Pollutant Concentration and Sub-Index)

Pollutant Standards Index (PSI)

readings.psi_twenty_four_hourly.national

readings.psi_twenty_four_hourly.south

readings.psi_twenty_four_hourly.north

readings.psi_twenty_four_hourly.east

readings.psi_twenty_four_hourly.central

readings.psi_twenty_four_hourly.west

24-hr PSI

Sub-Index

readings.pm10_sub_index.national

readings.o3_sub_index.national

readings.so2_sub_index.national

readings.pm25_sub_index.national

readings.co_sub_index.national

Pollutant Sub-Indices

Legacy Pollutant Standards Index (PSI)

Contains information about the API (from Data.gov.sg)

Concentration is measured in micrograms per cubic metre

Overall and regional PSI data including pollutant concentrations and sub-indices

Additional information on regions provided

Provides longitude and latitude for placing readings on a map

Data.gov.sg APIs

- Updated hourly from NEA.
- Readings are provided for each major region in Singapore
- The `region_metadata` field in the response provides longitude/latitude information for the regions. You can use that to place the readings on a map.
- Use the `date_time` parameter to retrieve the latest PSI readings at that moment in time.
- Use the `date` parameter to retrieve all of the readings for that day.


API documentation