Data on the AQI value for a particular area is on the official website. However, the AQI values are updated hourly, so it is pertinent to check them often to stay updated on the air quality in a particular area.4
Environmental Protection Agency (EPA) and NAAQS
The Environmental Protection Agency (EPA) estimates that reductions in air pollution can have several benefits for public health and the environment. The EPA uses the Clean Air Act to limit emissions from factories, power plants, and automobile industries. The EPA also works with state and local governments to develop plans to reduce air pollution.
The Clean Air Act has successfully reduced air pollution and improved air quality. The EPA uses the National Ambient Air Quality Standards (NAAQS) to measure the effects of the Clean Air Act. The NAAQS sets standards for six common air pollutants: carbon monoxide, lead, nitrogen dioxide, ozone, particulate matter, and sulfur dioxide. If the levels of these pollutants in the air exceed the recognized standards, then the area is considered to be “polluted.” The EPA monitors air pollution levels across the country and works with state and local governments to reduce pollution levels. The EPA’s monitoring program has been key to measuring these trends and ensuring that the United States continues to progress in reducing air pollution.