The Minnesota Pollution Control Agency (MPCA) collects air quality data. The data comes from a variety of sources. Some of these sources include outdoor air quality stations throughout Minnesota, industry and transportation emissions, and meteorological data. For detailed information and access to the air quality data collected, please visit the links below.
Ambient air monitoring
- Air Quality Index — Access current air quality conditions, historical values and forecasts from air monitors across Minnesota.
- Annual AQI summary reports — Summary of annual Air Quality Index (AQI) results for ozone and fine particle pollution in Minnesota.
- Community Air Toxics PAH study results — PAH monitoring data collected by the MPCA and the Mille Lacs Band of Ojibwe from June 2013 - June 2015.
- Criteria pollutant data explorer — Summary of criteria pollutant monitoring data collected in Minnesota.
- Minnesota air monitoring sites — Use the interactive map to see where air monitoring sites are located and what pollutants are measured at each site.
- Minnesota Air Toxics Data Explorer — Interactive maps, charts, and data tables summarizing more than 70 air toxics pollutants measured at Minnesota monitoring sites.
- North Minneapolis air monitoring project results — The MPCA began monitoring for Total Suspended Particulates (TSP) in an industrial area of North Minneapolis in October 2014. This monitoring site is known as Lowry Avenue (909). Monitoring results are provided in this tool using interactive charts and graphs.
For more information on monitoring, visit the Air pollution monitoring webpage.
Air pollutant emissions
- Greenhouse gas emissions data — This interactive tool provides progress toward targets set by the Next Generation Energy Act of 2007 as well as a summary of statewide greenhouse gas emissions in Minnesota.
- Mercury — The MPCA developed a 2025 statewide mercury emissions reduction goal to meet water quality standards by reducing mercury emissions in the air. This webpage contains mercury data and more detailed resources on Minnesota’s mercury air emissions reduction plan.
- Permitted facility air emissions data — View the reported air emissions for permitted facilities in Minnesota.
- Statewide and county air emissions — This tool allows users to explore all sources of air pollution in Minnesota, including point sources, mobile sources, fires, small diffuse sources and more.
- What's In My Neighborhood — Use What’s In My Neighborhood to find information about a permitted source of air emissions or to list the permittees in a locale of interest. To list permitted sources, choose the "Text Search" option, then select the Activity Type "Air Permit."
For more information on emissions, visit the Air pollutants and sources webpage.
- MNrisks: Pollutant priorities: Use this tool to identify the pollutants contributing most to the air pollution burden in communities across Minnesota.
- MNrisks: Source priorities: Use this tool to identify the sources (both big and small) that contribute the most to the air pollution burden where you live or work.
- Meteorological data: This webpage contains ready-to-run meteorological data suitable for the most recent version of AERMOD (version 14134).
- Background and ozone data: This webpage contains pollutant specific design values for Minnesota air monitors and pre-processed AERMOD-ready ozone data for use in Tier 3 NOx modeling demonstrations.
- E-service source report: This report displays the point sources, fugitive sources and corresponding source parameters that will pre-populate into the Air Modeling e-Service for a particular facility. Users can also download data.
For more information on modeling, visit the Air quality modeling webpage.
- AirData (U.S. EPA) — Online access to ambient air monitoring data collected across the United States including visualization tools, maps and downloadable data summaries and daily results.
- National Emissions Inventory (NEI) — Comprehensive and detailed estimate of air emissions of criteria pollutants, criteria precursors, and hazardous air pollutants from air emissions sources. The NEI is released every three years based primarily upon data provided by State, Local, and Tribal air agencies for sources in their jurisdictions and supplemented by data developed by the US EPA.
For additional data requests unfulfilled by the data provided on this page, complete an Information Request form.