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Air pollution is the world’s largest single environmental risk to health causing approximately 7 million deaths across the world each year. Only 12% of cities reporting air quality data meet WHO air quality guidelines yet over half the world population lives in urban areas where air pollution is on the increase. Persistent air pollution data gaps inhibit most countries from tackling air pollution. UN Environment supports the implementation of the UN Environment Assembly Air Quality Resolutions, UNEA 1/7 on Strengthening the Role of the UNEP UNEP  in promoting Air Quality of June 2014 and (Resolution 1/7), and the air quality resolution adopted at the third session of the United Nations Environment Assembly in December 2017 (Resolution 3/8), Preventing and reducing air pollution to improve air quality globally. This project provides technical support and capacity building to selected countries to develop air quality monitoring systems and collect data to identify the sources of air pollution and to develop strategies and action plans to improve the urban air quality.

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The project team worked with the local partners, the Ministry of Environment and the Costa Rican Meteorology Laboratory (LACOMET), to facilitate the deployment of a sensor alongside a weather station in San Jose. In 2019, an air quality monitoring device was delivered to Costa Rica by UNEP was installed at a reference station located at the RECOPE (Costa Rican Petroleum Refiner) for collocation studies.

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