Air quality database: Update 2018

This database was released in 2018 and the years of measurements range mostly from 2010 to 2016, but in few cases the latest available data was older. The database of 2018 hosts 4300 human settlements in 108 countries.

This database has been updated every 2 years since 2011 with its newest version updated 2022. 

The WHO global ambient air quality database is continuously being updated. If you are an official air quality data provider at either the country or city level, please use this template to submit the data to WHO.