Air Quality Data

Near-real time air quality maps and data, and air monitoring summaries and reports are available to the public. Subscribe to updates to this page by selecting providing your email or SMS number and selecting Air > Air Quality Data.

Near-real Time Air Quality Maps and Data

Through IDEM's Data Management and Display System, anyone has access to near-real time statewide and regional air quality maps and data including:

• The Air Quality Index (AQI) for pollutants including ozone and particulate matter (PM)
• Current pollutant concentrations (including carbon monoxide. nitrogen dioxide, ozone, particulate matter, and sulfur dioxide)
• Meteorological data (including air temperature, barometric pressure, precipitation, relative humidity, solar radiation, and wind speed and direction)
• User-generated reports for ozone and PM.

IDEM’s DMDS also enables users to obtain information about monitoring sites such as location, pollutants being monitored, and historical data. Noncontinuous 24-hour data collected using manual sampling methods is available for PM collected on a daily (one sample per day), 3-day (one sample every 3 days), and 6-day (one sample every 6 days) basis, and for lead and other metals collected on a 6-day basis.

Air Monitoring Summaries and Reports

Quick View Current Monitoring Data Summaries

• Carbon Monoxide (CO) Summary Table [XLSX]
• Lead (Pb) Summary Table [XLSX]
• Nitrogen Dioxide (NO₂) Summary Table [XLSX]
• Ozone (O₃) Summary Table [XLSX]
• Particulate Matter (PM_2.5) Summary Table [XLSX]
• Particulate Matter (PM₁₀) Summary Table [XLSX]
• Sulfur Dioxide (SO₂) Summary Table [XLSX]

Air Quality Data Reports

• Black Carbon Special Studies and Data Reports
• Ozone Data Summaries (including annual ozone season summary reports, 8-hour ozone status, Air Quality Action Days and exceedance days summaries, and 8-hour ozone critical values)
• Particulate Matter Data Summaries (including PM_2.5 Air Quality Action Days and exceedance days summaries, PM_2.5 speciation reports, and PM special studies)
• Sulfate Data
• Sulfur Dioxide (SO₂) Summary Report (annual reports concerning of SO₂ national air health standards, Indiana’s SO₂ monitoring network, SO₂ monitoring data summaries, air quality trends, and the status of SO₂ designations in Indiana)

Seasonal and Annual Data Reports

• Fine Particles, Ozone Season, and Sulfur Dioxide Summary Reports

Air Quality Trends

• Long-term Trends by Region

Air Toxics Monitoring and Studies

• IDEM Air Toxics Risk Assessments
• IDEM Air Toxics Monitoring Data
• U.S. EPA Air Toxics at Schools Data

Special Monitoring Projects

• Fine Particles
• Lead: Whiting Metals, Hammond, IN [XLSX]
  • Includes lead readings in micrograms per cubic meter (µg/m³), day of the week, average wind speed in miles per hour (mph), number of hours wind speed exceeded 10 mph, inches of precipitation on the day of sampling, and rainfall two days prior to sampling.
• Hartford City Special Study [PDF]:
  • In response to concerns regarding the Hartford Iron and Metal facility (HI&M) in Hartford City, Indiana, including a letter sent to the Indiana Department of Environmental Management (IDEM) by the Blackford County Concerned Citizens (BCCC), the Office of Air Quality (OAQ) conducted a special monitoring study near the facility from May 2020 through August 2020.

Air Monitoring Data from Neighboring States

• Illinois Monitoring Data
• Kentucky Monitoring Data
• Michigan Monitoring Data
• Ohio Air Monitoring Data
• U.S. EPA Air Data