Monitoring air quality

Global Environment Monitoring System for Air (GEMS/Air)

The Global Environment Monitoring System for Air (GEMS Air) is the UN Environment Programme mechanism on air quality monitoring that builds and maintains collaboration amongst global stakeholders to enhance and keep the state of the quality of the world’s air quality. It builds capacity and generates services in partnership with multiple stakeholders using low cost sensors to support the development of evidence-based air quality management policies and to support actions for mitigating air pollution.

Our Vision:

GEMS Air catalyzes scalable innovation using science and technology know-how, to enable developing country governments to drive transformation that improve the air their citizens breathe.

The Urban Air Action Platform - The World’s largest Real-Time Crowd-Sourced Air Data Platform

United Nations Environment Programme (UNEP) in partnership with UN-Habitat and IQAir—a Swiss air quality technology company—have come together to develop the largest real-time air quality databank, bundling real-time air quality data for particulate matter (PM2.5) from thousands of initiatives run by citizens, communities, governments and the private sector. Find out more.

Press release

World’s largest platform for air quality data launched at Tenth World Urban Forum

Abu Dhabi, 10 February 2020 - The United Nations Environment Programme (UNEP), together with UN-Habitat and IQAir, a Swiss air quality technology company, today launched the world’s largest air quality data…

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GEMS Air Strategic Plan

The GEMS Air strategic focus aims to drive transformation in the shortest time possible. Learn more

Contact us

For more information, please contact Mr. Sean Khan sean.khan[at]