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Nitrogen Dioxide (NO2) and other nitrogen oxides (NOx) damage the human respiratory system and contribute to acid rain. These air pollutants are regulated as part of EPA's National Ambient Air Quality Standards (NAAQS).
Nitrogen Dioxide (NO2) and other nitrogen oxides (NOx) damage the human respiratory system and contribute to acid rain. These air pollutants are regulated as part of EPA's National Ambient Air Quality Standards (NAAQS).
Nitrogen Dioxide (NO 2) is one of a group of gases called nitrogen oxides. Contact Us to ask a question, provide feedback, or report a problem. Discover. Connect. Ask. Follow. Information on setting and implementing the primary outdoor air quality standard for nitrogen dioxide.
Nitrogen Dioxide (NO 2) is one of a group of gases called nitrogen oxides (NO x). While all of these gases are harmful to human health and the environment, NO 2 is of greater concern. April 2018: EPA takes final action to retain the NO2 standards. Learn more.
The charts below show national and regional trends in NO 2 concentrations. For information on NO 2 standards, sources, health effects, and programs to reduce NO 2, please see our Nitrogen Dioxide Pollution page.
The two most prevalent oxides of nitrogen are nitrogen dioxide (NO 2) and nitric oxide (NO). Both are toxic gases with NO 2 being a highly reactive oxidant and corrosive. On this page: Sources of Nitrogen Dioxide; Health Effects Associated with Nitrogen Dioxide; Levels in Homes; Steps to Reduce Exposure; Standards or Guidelines; Additional ...
https://www.epa.gov/no2-pollution. This site provides information about nitrogen dioxide and its effects.
What are sulfur dioxide standards? How are they developed and reviewed? What scientific and technical information supports reviews?
learn about the primary nitrogen dioxide naaqs standards by reading the rule summary, the rule history, additional documents and fact sheets.
EPA’s national and regional rules to reduce emissions of SO 2 and pollutants that form sulfur oxides (SO x) will help state and local governments meet the Agency’s national air quality standards. Learn about how air quality standards help reduce SO 2.