Cambodia real-time Air Quality Monitoring project

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Flag of Cambodia.svg


(image attribution: wikipedia)

Cambodia, and especially its capital Phnom Penh, is just subjected to Air Pollution just like any other countries in Asia.

Cambodia ranks 162nd (out of 178 countries) at the Environmental Performance Index for Air Quality. This air pollution problem, just like other countries is South Asia, is becoming even more important for World Heritage Sites like the Angkor Archeological Park (Siem Reap) - due to the hundreds of tuk-tuks and buses carrying the tourist (check this article). You can read useful advices from the US Embassy on Phnom Penh "Dirty Air", or this interesting blog post about "Air pollution is hardly Cambodia’s highest priority".

Air Quality Data availability

Like most of the countries in Asia, there is no reason why there should not be real-time Air Quality monitoring in Cambodia, at least for Phnom Penh and Siem Reap.

Unfortunately, there is not much information about real-time Air Quality data from the Ministry of the Environment (MOE). And projects like the ASEAN-German Clean Air for Smaller Cities looked promising, but did not provide any tangible monitoring result.

The best solution for providing real-time Air Quality information in Cambodia is for the MOE to start providing official hourly AQI readings. But this can, sometimes, take more time than expected.


Light but visible Air Pollution on Phnom Penh Skyline (attribution).
(Check this articlefor an explanatiom about visual air quality)

Air Quality Forecast for Cambodia

Monitoring the Air Quality

For this reason, we are now investigating with several Institutions, Universities, Schools as well as individual citizens the possibility to setup an Air Quality monitoring network, which would allow to broadcast free hourly readings for several locations in Phnom Penh. This network would later be extended to other cities in Cambodia.

The monitoring stations used for this network are the semi-professional GAIA A12 Air Quality monitoring stations. The Gaia A12 is much more affordable than the traditional monitoring station ($200 for the GAIA A12 while it is $10,000+ for the traditional ones), but yet with a data quality as good and reliable as the traditional stations.

If you are interested in knowing more about the project, about helping to host a station, or just about getting and rebroadcasting the real-time Air quality data, then please contact us with the form at the bottom of this page.

Stay Informed

If you want to stay informed about the Air Quality monitoring project for Cambodia,
please register with the form below:
The Cambodian Air Quality Monitoring Project - subscription form
Enter your name - eg "John Doe"
Enter your email address - eg "john.doe@mail.com"
Write few words about your request - eg:"I live in Siem Reap, and would like to help for preserving our heritage.", "I would like to help by hosting an monitoring station", "I would like to know the average daily air quality for the past year", ..
Confirm that you are a human:
Then click on this submit button:

Other Countries

Do you want to view all the other on-going country monitoring programs?
Go to the page aqicn.org/country or click on any of the flags below:

Philippines Cambodia Indonesia Senegal South-africa Libya Morocco Tunisia Algeria Lebanon Qatar Bangladesh Pakistan
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About the Air Quality and Pollution Measurement:

About the Air Quality Levels

AQIAir Pollution LevelHealth ImplicationsCautionary Statement (for PM2.5)
0 - 50 Good Air quality is considered satisfactory, and air pollution poses little or no risk None
51 -100 Moderate Air quality is acceptable; however, for some pollutants there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution. Active children and adults, and people with respiratory disease, such as asthma, should limit prolonged outdoor exertion.
101-150 Unhealthy for Sensitive Groups Members of sensitive groups may experience health effects. The general public is not likely to be affected. Active children and adults, and people with respiratory disease, such as asthma, should limit prolonged outdoor exertion.
151-200 Unhealthy Everyone may begin to experience health effects; members of sensitive groups may experience more serious health effects Active children and adults, and people with respiratory disease, such as asthma, should avoid prolonged outdoor exertion; everyone else, especially children, should limit prolonged outdoor exertion
201-300 Very Unhealthy Health warnings of emergency conditions. The entire population is more likely to be affected. Active children and adults, and people with respiratory disease, such as asthma, should avoid all outdoor exertion; everyone else, especially children, should limit outdoor exertion.
300+ Hazardous Health alert: everyone may experience more serious health effects Everyone should avoid all outdoor exertion

To know more about Air Quality and Pollution, check the wikipedia Air Quality topic or the airnow guide to Air Quality and Your Health.

For very useful health advices of Beijing Doctor Richard Saint Cyr MD, check www.myhealthbeijing.com blog.


Usage Notice: All the Air Quality data are unvalidated at the time of publication, and due to quality assurance these data may be amended, without notice, at any time. The World Air Quality Index project has exercised all reasonable skill and care in compiling the contents of this information and under no circumstances will the World Air Quality Index project team or its agents be liable in contract, tort or otherwise for any loss, injury or damage arising directly or indirectly from the supply of this data.



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