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Environment

Historical 24-hr PSI

NEA (National Environment Agency)

Historical regional 24-hr PSI

Data from Apr 2014 to Sep 2026

Last updated 24 days ago (20 Oct 2026)

Data explorer

Historical24hrPSI.csv (109.6K rows, 3.3 MB)

24hr Psi Text	North Text	South Text	East Text	West Text	Central Text
(Null)0.0%	(Null)0.0% 526.5% 535.9% 544.9% 554.4%	(Null)0.0% 526.4% 535.7% 544.8% 554.2%	(Null)0.0% 527.0% 536.5% 545.5% 554.8%	(Null)0.0% 525.6% 534.8% 544.3% 554.0%	(Null)0.0% 526.2% 535.6% 545.5% 554.8%
1/4/2014 1:00	55	54	54	58	54
1/4/2014 2:00	55	54	54	59	54
1/4/2014 3:00	55	55	54	60	55
1/4/2014 4:00	56	55	55	62	55
1/4/2014 5:00	57	55	56	63	56
1/4/2014 6:00	58	56	56	64	56
1/4/2014 7:00	59	57	57	65	57
1/4/2014 8:00	60	57	58	66	58
1/4/2014 9:00	59	57	58	66	59
1/4/2014 10:00	60	58	58	67	59

Column legend

Title	Column name	Data type	Unit of measure	Description
24hr Psi	24hr_psi	Text	-	-
North	north	Text	-	-
South	south	Text	-	-
East	east	Text	-	-
West	west	Text	-	-
Central	central	Text	-	-

Analyse this dataset with Colab Notebook

1. Copy this dataset ID: d_b4cf557f8750260d229c49fd768e11ed
2. Click on the button below

Open in Colab

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.

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import requests
          
dataset_id = "d_b4cf557f8750260d229c49fd768e11ed"
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. (2020). Historical 24-hr PSI (2026) [Dataset]. data.gov.sg. Retrieved November 13, 2026 from https://data.gov.sg/datasets/d_b4cf557f8750260d229c49fd768e11ed/view

About this dataset

Contact

devakishen_mj@nea.gov.sg

Created on

31 Mar 2020

Licence

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

Agency

NEA (National Environment Agency)