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Collection: Historical Pollutant Standards Index (PSI)

Dataset: Historical Pollutant Standards Index (PSI) (2023)

Environment

Historical Pollutant Standards Index (PSI) (2023)

Data from Jan 2023 to Dec 2023

Last updated: 16 Apr 2025, 18:28 SGT

NEA (National Environment Agency)

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 sales_climo@nea.gov.sg. Please note that fees may apply for data and report preparation.

Data explorer

HistoricalPollutantStandardsIndexPSI2023.csv (48.5K rows, 8.5 MB)

Date
Date (YYYY-MM-DD)
Timestamp
Text
Update Timestamp
Text
Region
Text
Region Id
Text
Location Longitude
Numeric
Location Latitude
Numeric
Pm10 Twenty Four Hourly
Numeric
Pm10 Sub Index
Numeric
Pm25 Twenty Four Hourly
Numeric
Pm25 Sub Index
Numeric
O3 Eight Hour Max
Numeric
O3 Sub Index
Numeric
Co Eight Hour Max
Numeric
Co Sub Index
Numeric
So2 Sub Index
Numeric
So2 Twenty Four Hourly
Numeric
No2 One Hour Max
Numeric
Psi Twenty Four Hourly
Numeric
Psi Three Hourly
Numeric
(Null)0.0%
(Null)0.0%
2023-01-01T00:00:00+08:00<0.1%
2023-01-01T01:00:00+08:00<0.1%
2023-01-01T02:00:00+08:00<0.1%
2023-01-01T03:00:00+08:00<0.1%
(Null)0.0%
2023-01-01T00:08:52+08:00<0.1%
2023-01-01T01:08:52+08:00<0.1%
2023-01-01T02:08:52+08:00<0.1%
2023-01-01T03:08:52+08:00<0.1%
(Null)0.0%
east16.7%
west16.7%
north16.7%
south16.7%
(Null)0.0%
NRS16.7%
rCE16.7%
rEA16.7%
rNO16.7%
(Null)0.0%
016.7%
103.8200041.5%
103.7000013.8%
103.9400013.8%
(Null)0.0%
016.7%
1.3573550.0%
1.2958716.7%
1.4180316.7%
(Null)3.0%
21.04.7%
19.04.6%
20.04.6%
22.04.6%
(Null)3.0%
21.04.7%
19.04.6%
20.04.6%
22.04.6%
(Null)3.0%
7.09.0%
10.08.6%
8.08.5%
9.08.0%
(Null)3.0%
53.04.2%
52.04.2%
54.03.3%
51.03.1%
(Null)3.0%
15.02.9%
17.02.8%
16.02.8%
19.02.7%
(Null)3.0%
7.06.6%
6.06.5%
8.06.4%
5.06.2%
(Null)11.2%
1.06.5%
0.462.4%
0.472.3%
0.452.3%
(Null)3.0%
5.023.7%
4.023.2%
6.017.4%
3.011.5%
(Null)3.0%
2.038.0%
3.021.6%
1.013.1%
4.010.5%
(Null)3.0%
3.025.6%
4.016.6%
2.016.3%
5.013.1%
(Null)3.0%
12.03.9%
11.03.8%
13.03.8%
10.03.5%
(Null)3.0%
53.04.2%
52.04.2%
54.03.3%
51.03.1%
(Null)100.0%
2023-01-012023-01-01T00:00:00+08:002023-01-01T00:08:52+08:00southrSO103.820001.2958726.026.011.045.043.018.00.424.02.04.09.045.0
2023-01-012023-01-01T00:00:00+08:002023-01-01T00:08:52+08:00northrNO103.820001.4180328.028.07.031.063.027.00.626.01.02.024.031.0
2023-01-012023-01-01T00:00:00+08:002023-01-01T00:08:52+08:00eastrEA103.940001.3573535.035.016.056.037.016.00.273.02.03.013.056.0
2023-01-012023-01-01T00:00:00+08:002023-01-01T00:08:52+08:00centralrCE103.820001.3573517.017.011.045.059.025.00.323.03.04.010.045.0
2023-01-012023-01-01T00:00:00+08:002023-01-01T00:08:52+08:00westrWE103.700001.3573530.030.08.033.034.015.00.283.03.05.06.033.0
2023-01-012023-01-01T00:00:00+08:002023-01-01T00:08:52+08:00nationalNRS0035.035.016.056.063.027.00.626.03.05.024.056.0
2023-01-012023-01-01T01:00:00+08:002023-01-01T01:08:52+08:00southrSO103.820001.2958725.025.011.044.043.018.00.434.02.04.08.044.0
2023-01-012023-01-01T01:00:00+08:002023-01-01T01:08:52+08:00northrNO103.820001.4180328.028.07.031.061.026.00.636.01.02.011.031.0
2023-01-012023-01-01T01:00:00+08:002023-01-01T01:08:52+08:00eastrEA103.940001.3573534.034.016.055.036.015.00.293.02.03.011.055.0
2023-01-012023-01-01T01:00:00+08:002023-01-01T01:08:52+08:00centralrCE103.820001.3573517.017.011.044.059.025.00.323.03.04.09.044.0

Column legend

Title
Column name
Data type
Unit of measure
Description
DatedateDate (YYYY-MM-DD)--
TimestamptimestampText--
Update Timestampupdate_timestampText--
RegionregionText--
Region Idregion_idText--
Location Longitudelocation_longitudeNumeric--
Location Latitudelocation_latitudeNumeric--
Pm10 Twenty Four Hourlypm10_twenty_four_hourlyNumeric--
Pm10 Sub Indexpm10_sub_indexNumeric--
Pm25 Twenty Four Hourlypm25_twenty_four_hourlyNumeric--
Google colab link
Analyse this dataset with Colab Notebook
  1. 1. Copy this dataset ID: d_10501b71361f97dbbbab82095406c9c5
  2. 2. Click on the button below

Sample OpenAPI query

This code can be used to test a sample API query. It retrieves the data catalogue of this dataset. For a complete guide on query parameters and syntax, please refer to the API documentation. Try it out on your browser to see the response schema.

import requests
          
dataset_id = "d_10501b71361f97dbbbab82095406c9c5"
url = "https://data.gov.sg/api/action/datastore_search?resource_id="  + dataset_id 
        
response = requests.get(url)
print(response.json())

Citation

This dataset can be reused and cited in research publications.

National Environment Agency. (2025). Historical Pollutant Standards Index (PSI) (2023) (2025) [Dataset]. data.gov.sg. Retrieved April 3, 2026 from https://data.gov.sg/datasets/d_10501b71361f97dbbbab82095406c9c5/view

About this dataset

Contact

feedback@data.gov.sg

Created on

16 Apr 2025

Licence

Free forever for personal or commercial use, under the Open Data Licence.

Agency

NEA (National Environment Agency)