

Our Combined 5-Year [Ambient Air Monitoring] Network Assessment and 2025 Annual Monitoring Network Plan is now available for public review and comment through June 16, 2025. It contains planned Oklahoma DEQ ambient monitoring network changes for the upcoming year as well as an evaluation of overall network effectiveness and ability to meet the requirements in Appendix D to Part 58, Title 40 of the Code of Federal Regulations.
View Combined Assessment and Plan and Learn More 

The draft SO
2 Annual Report is available for public inspection and comment through June 16, 2025. The report contains an annual comparison of SO
2 emissions from four applicable sources in counties that were designated as attainment/unclassifiable for the 2010 primary SO
2 National Ambient Air Quality Standard (NAAQS) based on modeling submitted by DEQ.
View the draft report 

DEQ will soon be updating both Subchapter 49 and form #100-240 in response to recent
statutory changes to the Oklahoma Emission Reduction Technology Rebate Program. However, the rebate program (
OAC 252:100-49) is in effect, and the rebate claim application (
DEQ Form #100-240) is available for qualifying Emission Reduction Projects (ERPs) from Oklahoma's Oil & Gas industry (requires a $1,000 non-refundable review and processing fee). The deadline for submitting rebate claims for FY25 ERPs is 12/31/25.
Note: The 2024 Oklahoma Legislature appropriated $50 million for the newly-renamed "Oklahoma Emission Reduction Technology Upstream and Midstream Incentive Revolving Fund." No funds have yet been appropriated for the newly-created "Oklahoma Emission Reduction Technology Downstream Incentive Revolving Fund" (for petroleum refineries). 

With funding from the Volkswagen Environmental Mitigation Trust Agreement, DEQ has developed several new programs to promote healthier air quality across the state. More info:
Volkswagen Settlement
What is Air Quality?
The amount of pollution in the air from all sources – natural and human – defines the quality of the air we breathe. Air pollution isn’t limited to our cities; it can blow into any part of Oklahoma from neighboring states.
Bad air quality can affect everybody’s health. It can have direct effects on the lungs, and it can worsen an existing condition, such as asthma. Some people are more sensitive to air pollution than others. These include young children who are growing rapidly and older adults who have reduced immune systems.
Poor public health also incurs economic costs for society, e.g., increased healthcare costs and loss of working days. A clean environment makes Oklahoma an attractive place to live, work and play: something we can all be proud of.
What does the Air Quality Division do?
The Air Quality Division operates various programs to carry out DEQ’s regulatory duties under state and federal law.
Air Monitoring
Measures the ambient (outdoor) air quality across Oklahoma
Air quality forecasts, alerts, and health advisories
Air Toxics
Air Permits
Issues permits to companies with facilities that produce air pollutant emissions
Emissions Inventory
Collects data about emissions released into the air from all Oklahoma sources
Rules & Planning
Reviews and proposes rule changes to the Air Quality Advisory Council
Researches and develops regulatory strategies