Open Knowledge

Pollutant Emissions 45% open


What data is expected?

Aggregate data about the emission of air pollutants especially those potentially harmful to human health (although it is not a requirement to include information on greenhouse gas emissions). Aggregate means national-level or available for at least three major cities. In order to satisfy the minimum requirements for this category, data must be available for the following pollutants and meet the following minimum criteria:

  • Particulate matter (PM) Levels
  • Sulphur oxides (SOx)
  • Nitrogen oxides (NOx)
  • Volatile organic compounds (VOCs)
  • Carbon monoxide (CO)
  • Updated on at least once a week.
  • Measured either at a national level by regions or at leasts in 3 big cities.

What data is available

  •   Openly licensed? No (No URL given)
  •   Is the data available for free? Yes
  •   Is the data machine readable? No (n/a)
  •   Available in bulk? No
  •   Is the data provided on a timely and up to date basis? Yes
  •   Publicly available? Yes
  •   Is data in digital form? Yes
  •   Is the data available online? Yes (Here)
  •   Does the data exist? Yes


Information can be accessed in different portals. Most information can is gathered int the National Institute of Ecology ( though machine readable files commonly do not follow a database layout. Data is clustered at a state level and divided in different time-lapse data clusters. Most files are accessible in: The Ministry of Environment's porta contains similar information: Also, data is also identified under research center's web sites, such as Mexico's National Autonomous University: Furthermore, SEMARNAT's Pollution Transfer and Emissions registry (RETC) contains a national database of air, water, ground and underground contains record of pollution sources and environmental assessments. RETC's landing page can be accesed here: and data (not in bulk) accessed here: No license information found, which means it's not an open license.

Found bulk data for air measurements here but it's not timely (until end of 2008):

For 2014's review, it was noted that the main data has not been updated since September 6th 2013 16:17hrs. INECC's web site ( does not use an open license. Under it's privacy statement, it indicates "Some rights reserved" and in the policy legend does not explain the terms and conditions for the use of the data besides explicitly prohibiting parcial or total reuse of content for commercial purposes: "Queda estrictamente prohibido la reproducción total o parcial con fines comerciales de los datos, gráficos e información contenidos en esta página, por cualquier medio y de cualquier forma salvo para fines bibliográficos que reconozcan al autor de los documentos publicados en este sitio."

For 2015: There is no air quality data to other regions beside Mexico City. The information in the portal above does not contain the relevant pollutants. Therefore, I indicated the data as does not exist. The link to Mexico City air quality data -

add by yaron the data provided on a timely and up to date basis its can been seem here-i didnt find the page That the information is taken link also the site list Mexico is a Country with online data link

Reviewer comments




  • yar michl


  • Mor Rubinstein