American University of Beirut

MSFEA Air Pollution Observatory

​​​​​​​​​​​​​​​​​​​​​​​​​​The MSFEA Air Pollution Observatory continuously monitors the airborne particle pollutant levels in Beirut from the AUB campus.

The pollutants being monitored are known as PM 2.5 and PM 10. These represent airborne particles that are smaller than 2.5 and 10 micrometers, respectively, and which are able to penetrate deep into the lungs. These small particles are strongly associated with all causes of early mortality, heart disease, respiratory disease such as asthma and COPD, and neurodevelopmental disorders in children.

Urban areas in Lebanon routinely exceed WHO guidelines on PM. MSFEA and AUB have numerous ongoing projects to document and mitigate the air pollution problem. For more info about air pollution, see this US Environmental Protection Agency link.

Image: Size comparisons for PM particles, Source

The MSFEA Air Pollution Observatory uses two E-BAM PLUS (Portable Environmental Beta-Attenuation Mass Monitor) devices from Met One Instruments. The specifics about the model we use can be found here. They use beta attenuation to measure the concentrations of particulate matter in the air. The devices are mounted on the roof of the Munib & Angela Masri Building at AUB and have been configured to give one reading every hour.​

Color Legend​​

Based on the Air Quality Indexdescriptions taken from

​​For more info contact us at

PM2.5 (ug/m3)
PM10 (ug/m3)
Temperature (C)
Humidity (%)
PM2.5/10 – concentration of particles smaller than 2.5/10 micrometers

Contact Us

For various questions, please try contacting us via social media first!
read more

Privacy Statement

We take data privacy seriously and adhere to all applicable data privacy laws and regulations.
read more

Copyright and Disclaimer

Written permission is needed to copy or disseminate all or part of the materials on the AUB website.
read more

Title IX, Non-Discrimination, and Anti-Discriminatory Harassment

AUB is committed to providing a safe, respectful, and inclusive environment to all members of its community.
read more