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Ground-level ozone season is March - October. The following document details the maximum concentrations observed at each of the ozone monitors in the Charlotte Metrolina region and the number of days that exceed the federal, health-based standard for ground-level ozone. This document is updated each month during ozone season and presented during the Air Quality Commission meeting.
Monthly Ozone Summary (Updated 07/26/2021)
Mecklenburg County overall ambient (outdoor) air quality continues to improve. At the end of 2020, Mecklenburg County monitoring data continued to demonstrate compliance with all federal, health-based air quality standards. The following reports summarize the data trends since 2005.
Overall Air QualityGround-level OzoneParticulate Matter Nitrogen Oxides, Sulfur Dioxide, and Carbon Monoxide
Overall Air Quality
Nitrogen Oxides, Sulfur Dioxide, and Carbon Monoxide
Analysis of Air Quality Changes During the Local Stay at Home Order (3/26/20-4/29/20)Analysis of Ozone Concentrations during the COVID-19 Pandemic (March-October)
Analysis of Air Quality Changes During the Local Stay at Home Order (3/26/20-4/29/20)
Analysis of Ozone Concentrations during the COVID-19 Pandemic (March-October)
Request data from Mecklenburg County Air Quality monitoring stations by completing and submitting this form.
Visit the EPA's
AirData website to access monitored air quality data from across the United States.
County services have returned to their normal schedule unless noted otherwise. Read the latest service availability update.