To access historical data and multi-day charting: Fuzzy SG

1-hr PM2.5 Unofficial Extrapolated PSI

North - PSI - AQI - - µg/m³
South - PSI - AQI - - µg/m³
East - PSI - AQI - - µg/m³
West - PSI - AQI - - µg/m³
Central - PSI - AQI - - µg/m³
PSI and AQI are only defined for 24-hrs average concentration. The numbers here show what the PSI/AQI would be should the current hour readings persist over 24 hours.

*PSI categorization for PM2.5 are based on 24-hr average (which this chart is NOT), and is included for reference only.

*AQI categorization for PM2.5 are based on 24-hr average (which this chart is NOT), and is included for reference only.

Data prior to 2 Jan 2019: https://www.nea.gov.sg/api/ (now deprecated)

Data from 2 Jan 2019: https://data.gov.sg/dataset/pm2-5

NEA 24-hr PM2.5 breakpoints http://www.haze.gov.sg/docs/default-source/faq/computation-of-the-pollutant-standards-index-(psi).pdf

Contains information from "PM2.5" accessed hourly from https://data.gov.sg/dataset/pm2-5 which is made available under the terms of the Singapore Open Data Licence version 1.0

This page is provided "as is" and "as available" basis and does not represent/imply any merchantability or fitness for a particular purpose.

This page may break without warning and may not be maintained. {fuzzybee at outlook dot sg} if you need to ping me