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Ambient Air Quality Monitoring Data in Asia
Compilation of websites that monitor ambient air quality levels in their respective countries or cities

The links below point to websites that publish ambient air quality monitoring data on a regular basis. For some countries/cities, the information is uploaded on an hourly or daily basis. Others are updated less frequently (e.g., weekly). If you would like to suggest a link, please contact us.

An ongoing study by the Clean Air Initiative for Asian Cities, summarizing air quality data from 20 cities in Asia shows that, on average, there has been a moderate to slight decrease in pollution levels for sulfur dioxide (SO2), total suspended particulate matter (SPM), and fine particulates, also known as PM10. Although particulate matter remains at levels harmful to human health, SO2 levels are now, on average, below the guideline values set by the World Health Organization – proving that air quality management policies and measures can work in Asia. Read the full briefing paper (2 Feb 2005).

Online Resources

Country City Remarks
Bangladesh particulate matter is main pollutant of concern

Note: the VECC-SEPA website provides updated information for 84 Chinese cities, based on official information from SEPA's AQ Daily Report.

absorbable/respirable suspended particles and NO2 are main pollutants.

>> other Chinese cities

Hong Kong
India Kolkata
New Delhi
Japan Tokyo (in Japanese)
Korea Busan (in Korean)
Malaysia coverage: Ozone (ppb), CO (ppm), N02 (ppb), S02(ppb), PM10 (µg/m3)
Nepal Kathmandu PM10 (µg/m3)
Philippines Metro Manila coverage: SO2(ppb), NO2 (ppb), CO (ppm), Ozone (ppb), PM10 (µg/m3)
Sri Lanka
Singapore 24-hr PSI readings; PM10 is main pollutant of concern
Thailand Bangkok coverage: SO2(ppb), NO2 (ppb), CO (ppm), Ozone (ppb), PM10 (µg/m3)
Vietnam Ho Chi Minh
Quick Links

Who we are:
- CAI-Asia Partnership
- CAI-Asia Center
- Local Networks

Key documents:
- Annual Report 2007
- Country Synthesis Reports
- Compendium
- Benchmarking Report
- Quarterly Report (Center)
- Newsletters

Capacity Building
DIESEL (completed)
PSUTA (completed)

Related Topics
Monitoring > Air quality data

Secretariat: CAI-Asia Center, 3510 Robinsons Equitable Tower, ADB Ave., Ortigas Center, Pasig City, Philippines 1605
Tel: +632 3952843 to 45 / Fax: +632 3952846