The Air Monitoring Section operates a statewide network of ambient (outdoor) air pollution monitors. These monitors serve three primary functions:

1. To determine compliance with the Clean Air Act’s pollution standards
2. To inform the public on the state of Oklahoma’s air quality
3. To monitor areas of special or immediate concern

National Ambient Air Quality Standards (NAAQS)

NAAQS Table and Current Highs – lists each standard and highest monitored values for the current year

These standards define the maximum permissible concentrations for common air pollutants, or criteria pollutantsCriteria Air PollutantsEPA calls these pollutants criteria pollutants because it sets NAAQs for them based on specific criteria, characterizations of the latest scientific information about their effects on public health or welfare. Click on the name to read the factsheet.

• CO – Carbon Monoxide
• Pb – Lead
• NO₂ – Nitrogen Dioxide
• O₃ – Ozone
• SO₂ – Sulfur Dioxide
• PM – Particulate Matter
  • PM-10: particulate matter <10 μmDefinitionmicrometers
  • PM-2.5: particulate matter <2.5 μm

Air Data Report – annual summary of air quality monitoring data in comparison to the NAAQS

Informing the Public

Our primary methods of informing the public are:

AQI (Air Quality Index), Ozone & PM Alerts, Health Advisories

Current Air Quality & AQI Forecasts – includes map and table of current monitoring sites

Past Data (including Archives)

The Air Monitoring Network Plan, which details DEQ’s planned changes to the ambient monitoring network, is available annually in June for public review. View final network plans for: 2024, 2023, 2022, 2021, 2020

Special Studies

Air Toxics including Mercury (Hg)

Hydrogen Sulfide (H₂S) – a toxic gas which is monitored at two locations

Smoke Management