SG Real PSI: Haze PSI
SG Real PSI: Haze PSI Summary
SG Real PSI: Haze PSI is a iOS app in the Weather category, developed by OUS Group Pte Ltd (Originally US). First released 5 years ago(Mar 2020),
Data tracking: SDKs and third-party integrations were last analyzed on Feb 24, 2025.
Store info: Last updated on App Store on Mar 28, 2020 .
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App Description
Got haze in Singapore? Want to check PSI, pollution and PM2.5 readings around Singapore? Use SG Real PSI app!
NEA's PSI reading is based on a 24-hour average. While it is a good measure of exposure, it tends to dampen the impact of sharp drops or increase in PSI readings in an hour.
We have created what we think is a right implementation of NEA's official PSI formula on haze.gov.sg to deduce the actual, hourly PSI measurements from hourly PM2.5 readings.
Our hourly PSI figures are calculated using NEA's hourly reading. Unlike others, we don't use our own sensors which may or may not be calibrated correctly or accurate.
Important Disclaimer: We are not experts on air pollution. We create this app because we are curious about what the actual hourly PSI looks like. Our figures may be wrong. Please use at your own risk.