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CSV National Environment Agency

Historical Pollutant Standards Index (PSI) (2020)

What this data shows

Published by National Environment Agency. 50,778 records. Fields include Date, Timestamp, Update Timestamp, Region (20 columns in total). Covers 2020-01-01 to 2020-12-31. Last updated 2025-04-16.

Description

National Environment Agency historical Pollutant Standards Index (PSI) readings for Singapore throughout 2020, with ISO 8601 timestamps in Singapore Time. Columns cover regional PM10, PM2.5, O3, CO, SO2, and NO2 concentrations and sub-indices, plus 24-hour and 3-hour PSI values by region. Environmental researchers reconstruct 2020 haze and air-quality episodes; the file may contain gaps and is not quality-controlled climate data.

Official description

Historical Pollutant Standards Index (PSI) for Singapore. All timestamps are provided in Singapore Time (SGT), formatted in ISO 8601. ⠀ Disclaimer: This dataset may contain missing records and has not undergone quality control procedures applied to climate data and records. For official climate records or climate data reports, please contact [email protected]. Please note that fees may apply for data and report preparation.

Download CSV View on data.gov.sg
Last updated
Coverage
2020-01-01 – 2020-12-31
Rows
50,778
Columns
20

Chart

Values are summed where multiple rows share the same category.

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Data

Date Timestamp Update Timestamp Region Region Id Location Longitude Location Latitude Pm10 Twenty Four Hourly Pm10 Sub Index Pm25 Twenty Four Hourly Pm25 Sub Index O3 Eight Hour Max
2020-01-01 2020-01-01T00:00:00+08:00 2020-01-01T00:08:52+08:00 south rSO 103.820000 1.295870 22.000000 22.000000 8.000000 35.000000 30.000000
2020-01-01 2020-01-01T00:00:00+08:00 2020-01-01T00:08:52+08:00 north rNO 103.820000 1.418030 18.000000 18.000000 8.000000 33.000000 35.000000
2020-01-01 2020-01-01T00:00:00+08:00 2020-01-01T00:08:52+08:00 east rEA 103.940000 1.357350 22.000000 22.000000 8.000000 35.000000 29.000000
2020-01-01 2020-01-01T00:00:00+08:00 2020-01-01T00:08:52+08:00 central rCE 103.820000 1.357350 18.000000 18.000000 9.000000 36.000000 38.000000
2020-01-01 2020-01-01T00:00:00+08:00 2020-01-01T00:08:52+08:00 west rWE 103.700000 1.357350 21.000000 21.000000 7.000000 29.000000 24.000000
2020-01-01 2020-01-01T00:00:00+08:00 2020-01-01T00:08:52+08:00 national NRS 0.000000 0.000000 22.000000 22.000000 9.000000 36.000000 38.000000
2020-01-01 2020-01-01T01:00:00+08:00 2020-01-01T01:08:52+08:00 south rSO 103.820000 1.295870 22.000000 22.000000 8.000000 34.000000 29.000000
2020-01-01 2020-01-01T01:00:00+08:00 2020-01-01T01:08:52+08:00 north rNO 103.820000 1.418030 18.000000 18.000000 8.000000 33.000000 35.000000
2020-01-01 2020-01-01T01:00:00+08:00 2020-01-01T01:08:52+08:00 east rEA 103.940000 1.357350 22.000000 22.000000 8.000000 35.000000 29.000000
2020-01-01 2020-01-01T01:00:00+08:00 2020-01-01T01:08:52+08:00 central rCE 103.820000 1.357350 18.000000 18.000000 9.000000 35.000000 38.000000

Preview shows 10 rows and 12 columns. Use the table search or download the CSV for the full data.

Columns

Column Type Categorical
Date Date (YYYY-MM-DD) No
Timestamp Text Yes
Update Timestamp Text Yes
Region Text Yes
Region Id Text Yes
Location Longitude Numeric Yes
Location Latitude Numeric Yes
Pm10 Twenty Four Hourly Numeric Yes
Pm10 Sub Index Numeric Yes
Pm25 Twenty Four Hourly Numeric Yes
Pm25 Sub Index Numeric Yes
O3 Eight Hour Max Numeric Yes
O3 Sub Index Numeric Yes
Co Eight Hour Max Numeric Yes
Co Sub Index Numeric Yes
So2 Sub Index Numeric Yes
So2 Twenty Four Hourly Numeric Yes
No2 One Hour Max Numeric Yes
Psi Twenty Four Hourly Numeric Yes
Psi Three Hourly Numeric No