Residents

Sulfur Dioxide NAAQS Implementation

The U.S. Environmental Protection Agency (EPA) sets National Ambient Air Quality Standards (NAAQS) for criteria pollutants, including sulfur dioxide (SO2). On June 2, 2010, EPA revised the SO2 standard, establishing a one-hour primary standard of 75…

Air Pollution Control Rules

Wisconsin's State Legislature creates and revises the Wisconsin Statutes

Refrigerant Recovery Program

Wisconsin law prohibits the release of regulated refrigerants into the atmosphere. The release of regulated refrigerants generally occurs as refrigeration and air-conditioning equipment is salvaged or dismantled for disposal. The refrigeration…

Air Pollutants and Standards

Good air quality is important to your health and the environment. There are many air pollutants that can directly affect your health through breathing, such as air toxics, asbestos, ground-level ozone and particulates. The specific pollutant, its…

Air, Air, Everywhere Poetry Contest

Particle Pollution

Particulate Matter (PM) pollution consists of solid particles or liquid droplets suspended in the air. Fine particles (PM2.5) may be emitted directly into the atmosphere but are more commonly created by reactions of other pollutants, such as…

Ozone

Ozone is a gas that occurs in both Earth's upper atmosphere and at ground level. When ozone is at ground level, it is a major component of smog and can cause a number of health problems for humans and other living things. Because of this serious…

Air Education and Outreach

Public involvement is essential to the DNR's mission to protect the environment and human health through our programs and regulations. The Air Management Program has several resources to help members of the public stay informed about air quality…

Air Quality Monitoring

Wisconsin's ambient air quality monitoring network is spatially distributed as outlined by the Clean Air Act to provide timely access to air quality information, support planning for air quality improvements and verify program adequacy. The network…

Mobile Sources and Fuels

Mobile sources are any vehicle or equipment, including automobiles, trucks, aircraft, locomotives, watercraft, construction equipment, lawnmowers and others that generate air emissions. Mobile source emissions account for a majority of all human-…