Surface Data
The TOAR database collects hourly data of long-term surface air quality measurements from over 10,000 stations globally. Harmonized access to these data is provided via the TOAR Data REST API.
The TOAR-II database of surface observations is the biggest collection of tropospheric ozone data in the world.
Contributors
The European Environment Agency (EEA) gathers air pollution data from a wide range of sources.
Ground level ozone measurements, sometimes referred to as in situ measurements are those measurements that occur close to the ground, i.e. within the boundary layer which is approximately 1 kilometre in height. Ongoing network measurements from the Canadian Air and Precipitation Monitoring Network (CAPMoN) and studies such as those from Alert, NU and Mount Sutton, QC are also included within the published data sets.
This repository provides access to ambient air quality monitoring data from the U.S. Environmental Protection Agency (EPA) Air Quality System (AQS). It includes annual summaries, daily summaries, and raw sample data for criteria gases, particulate matter, meteorological variables, hazardous air pollutants (HAPs), volatile organic compounds (VOCs), ozone precursors, lead, and quality assurance blanks. Data are available from 1990 onwards and are updated twice per year. The repository also includes Air Quality Index (AQI) data at both monitoring site and metropolitan/county levels. The datasets are provided as comma-separated values (CSV) files and are also accessible through the EPA AQS API.
The OpenAQ repository of air quality includes low cost sensor data as a pilot, in addition to reference-grade data. We are currently collecting data in many different countries and primarily aggregate PM2.5, PM10, ozone (O3), sulfur dioxide (SO2), nitrogen dioxide (NO2), carbon monoxide (CO), and black carbon (BC) measurements. Additional pollutants outside of those standard set of pollutants are available through low cost sensor sources at certain locations.
“For people and the environment″ is the motto of the Federal Environment Agency – known as UBA for short – and sums up what we are there for. As Germany’s central environmental authority, we see to it that there is a healthy environment in Germany in which people can live protected as far as possible from harmful environmental impacts, such as pollutants in the air or water.
EANET (The Acid Deposition Monitoring Network in East Asia) was established in 2001 as an intergovernmental initiative to create a common understanding on the state of acid deposition problems in East Asia, provide useful inputs for decision making at various levels, and promote cooperation among countries.
KRAQN provides intuitive, fast, and accurate information about fine dust and particulate matter data.
Please notice that long-term KRAQN database is currently accessible only through the Korean version of the website. The English version provides access only to data from the past three days.
