A Singapore Government Agency Website
Official website links end with .gov.sg
Government agencies communicate via .gov.sg websites (e.g. go.gov.sg/open). Trusted websites

Secure websites use HTTPS

Look for a lock () or https:// as an added precaution. Share sensitive information only on official, secure websites.

Scam alert

Government officers will never ask you to send money or share your details over the phone. When unsure, hang up and call Scamshield at 1799.

Sign up here for higher rate limits, priority support and maintenance notifications.

Collection: Historical Pollutant Standards Index (PSI)

Dataset: Historical Pollutant Standards Index (PSI) (2024)

Environment

Historical Pollutant Standards Index (PSI) (2024)

Data from Jan 2024 to Dec 2024

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

HistoricalPollutantStandardsIndexPSI2024.csv (52.4K rows, 8.7 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%
2024-01-01T00:00:00+08:00<0.1%
2024-01-01T01:00:00+08:00<0.1%
2024-01-01T02:00:00+08:00<0.1%
2024-01-01T03:00:00+08:00<0.1%
(Null)0.0%
2024-01-01T00:00:41+08:00<0.1%
2024-01-01T01:00:40+08:00<0.1%
2024-01-01T02:00:29+08:00<0.1%
2024-01-01T03:00:33+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%
103.8249.9%
103.716.6%
103.9416.6%
(Null)0.0%
016.7%
1.3573550.0%
1.2958716.7%
1.4180316.7%
(Null)16.7%
21.04.5%
22.04.5%
23.04.5%
24.04.4%
(Null)16.7%
21.04.5%
22.04.5%
23.04.5%
24.04.4%
(Null)16.7%
10.08.6%
9.08.2%
11.08.0%
12.07.3%
(Null)16.7%
52.05.6%
53.04.9%
54.04.5%
55.03.7%
(Null)16.8%
8.03.5%
11.03.4%
9.03.3%
7.03.3%
(Null)16.9%
3.07.9%
4.07.8%
5.07.7%
2.07.1%
(Null)68.1%
1.031.8%
2.00.1%
(Null)16.8%
4.023.9%
5.019.1%
3.013.7%
6.011.6%
(Null)16.7%
2.034.3%
1.018.8%
3.016.6%
4.07.3%
(Null)16.7%
3.022.4%
2.020.6%
4.016.0%
5.09.6%
(Null)16.8%
13.03.6%
12.03.5%
11.03.4%
10.03.3%
(Null)16.7%
52.05.6%
53.04.9%
54.04.5%
55.03.7%
(Null)100.0%
2024-01-012024-01-01T00:00:00+08:002024-01-01T00:00:41+08:00southrSO103.821.2958718.018.09.037.011.05.04.02.02.011.037.0
2024-01-012024-01-01T00:00:00+08:002024-01-01T00:00:41+08:00northrNO103.821.4180315.015.07.029.04.02.04.01.02.020.029.0
2024-01-012024-01-01T00:00:00+08:002024-01-01T00:00:41+08:00eastrEA103.941.3573521.021.010.041.010.04.01.06.01.02.032.041.0
2024-01-012024-01-01T00:00:00+08:002024-01-01T00:00:41+08:00centralrCE103.821.3573523.023.010.042.018.07.02.02.04.028.042.0
2024-01-012024-01-01T00:00:00+08:002024-01-01T00:00:41+08:00westrWE103.71.3573516.016.07.028.07.03.01.07.01.02.014.028.0
2024-01-012024-01-01T00:00:00+08:002024-01-01T00:00:41+08:00nationalNRS00
2024-01-012024-01-01T01:00:00+08:002024-01-01T01:00:40+08:00southrSO103.821.2958718.018.08.035.010.04.04.02.02.011.035.0
2024-01-012024-01-01T01:00:00+08:002024-01-01T01:00:40+08:00northrNO103.821.4180315.015.07.028.04.02.04.01.02.018.028.0
2024-01-012024-01-01T01:00:00+08:002024-01-01T01:00:40+08:00eastrEA103.941.3573523.023.010.040.08.04.01.06.01.02.033.040.0
2024-01-012024-01-01T01:00:00+08:002024-01-01T01:00:40+08:00centralrCE103.821.3573522.022.010.041.015.07.03.02.04.030.041.0
Google colab link
Analyse this dataset with Colab Notebook
  1. 1. Copy this dataset ID: d_9213cd2e4631f7148ab5932a10df9958
  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_9213cd2e4631f7148ab5932a10df9958"
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) (2024) (2025) [Dataset]. data.gov.sg. Retrieved May 20, 2026 from https://data.gov.sg/datasets/d_9213cd2e4631f7148ab5932a10df9958/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)