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PSI Reading
The 3-hr PSI at 7 pm on 7 Nov 2002 was 53.
This is the last update for the day.
Health Advisory
None
The 24-hr PSI at 4 pm on 7 Nov 2002 was 39.
This put overall air quality in the ‘good’ range.
Pollutant responsible for the 24-hr PSI : Sulphur Dioxide
( Note*: A subindex is only reported when one-hour concentration exceeds 1130µg/m3)
Current & Previous Month 24-hr PSI Readings
Click this to see the schematic diagram of NEA’s Telemetric Air Quality Monitoring & Management System
3-hr PSI update for 7 Nov 2002
 Time3-hr PSI** 7 am15 8 am19 9 am23 10 am25 11 am23 12 pm25 1 pm24 2 pm30 3 pm41 4 pm51 5 pm54 6 pm55 7 pm53Note** :
Hourly updates of 3-hr PSI Readings are provided from 7am to 7pm.
The readings are calculated based on PM10 concentrations only.
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