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District of Columbia Unknown Air Quality Alert | Effective 07/16/2026 13:40

The Metropolitan Washington Council of Governments and District Department of Environment has issued a Code RED Air Quality Alert Friday for the District of Columbia. A Code Red Air Quality Alert means that air pollution concentrations within the region are unhealthy for the general population. The effects of air pollution can be minimized by avoiding strenuous activity or exercise outdoors. For more information on ground-level ozone and fine particles visit the web site

Maryland Unknown Air Quality Alert | Effective 07/16/2026 13:40

The Maryland Department of the Environment has issued a Code RED Air Quality Alert Friday for the Maryland suburban DC region. A Code Red Air Quality Alert means that air pollution concentrations within the region are unhealthy for the general population. The effects of air pollution can be minimized by avoiding strenuous activity or exercise outdoors. For more information on ground-level ozone and fine particles visit the web site mde.maryland.gov/programs/air/AirQualityMonitoring/Pages/index.aspx

Maryland Unknown Air Quality Alert | Effective 07/16/2026 13:40

The Maryland Department of the Environment has issued a Code RED Air Quality Alert Friday for the Baltimore City Metro and Annapolis region. A Code Red Air Quality Alert means that air pollution concentrations within the region are unhealthy for the general population. The effects of air pollution can be minimized by avoiding strenuous activity or exercise outdoors. For more information on ground-level ozone and fine particles visit the web site

Maryland Unknown Air Quality Alert | Effective 07/16/2026 13:40

The Maryland Department of the Environment has issued a Code RED Air Quality Alert Friday for Northern Baltimore. A Code Red Air Quality Alert means that air pollution concentrations within the region are unhealthy for the general population. The effects of air pollution can be minimized by avoiding strenuous activity or exercise outdoors. For more information on ground-level ozone and fine particles visit the web site mde.maryland.gov/programs/air/AirQualityMonitoring/Pages/index.aspx

Maryland Unknown Air Quality Alert | Effective 07/16/2026 13:40

The Maryland Department of the Environment has issued a Code RED Air Quality Alert Friday for Northeast Maryland. A Code Red Air Quality Alert means that air pollution concentrations within the region are unhealthy for the general population. The effects of air pollution can be minimized by avoiding strenuous activity or exercise outdoors. For more information on ground-level ozone and fine particles visit the web site mde.maryland.gov/programs/air/AirQualityMonitoring/Pages/index.aspx

North Carolina Unknown Air Quality Alert | Effective 07/16/2026 13:43

The North Carolina Department of Environmental Quality in Raleigh has issued a Code Orange Air Quality Action Day for Ground Level Ozone for Gaston County, from 10 AM to 8 PM EDT Friday. An Air Quality Action Day means that Ground Level Ozone concentrations within the region may approach or exceed unhealthy standards. For additional information, please visit the North Carolina Division of Air Quality Web site at https://airquality.climate.ncsu.edu/.

North Carolina Unknown Air Quality Alert | Effective 07/16/2026 13:43

The North Carolina Department of Environmental Quality in Raleigh has issued a Code Orange Air Quality Action Day for Ground Level Ozone for Mecklenburg County, until 8 PM EDT this evening. An Air Quality Action Day means that Ground Level Ozone concentrations within the region may approach or exceed unhealthy standards. For additional information, please visit the North Carolina Division of Air Quality Web site at https://airquality.climate.ncsu.edu/.

South Carolina Unknown Air Quality Alert | Effective 07/16/2026 13:43

The South Carolina Department of Environmental Services (SCDES) has issued a Code Orange Ground Level Ozone Action Day for the Catawba region of South Carolina, from 10 AM to 8 PM EDT Friday. Dominant high pressure will ensure minimal cloud cover and light and variable winds. Long-range wildfire smoke will also transport ozone precursors into the area. These factors will allow for sufficient ozone production, compounding with weak dispersion characteristics of an already pollutant-loaded atmosphere.
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