由于更严格的规则和更多的电动车辆,美国城市空气污染在五年内下降了18%,但农村地区仍面临高水平的污染。 U.S. city air pollution dropped 18% in five years due to stricter rules and more electric vehicles, but rural areas still face high levels.

2025年11月20日发表的一份新研究表明, 过去五年美国主要城市空气污染水平下降了18%, A new study released on November 20, 2025, reveals that air pollution levels in major U.S. cities have decreased by 18% over the past five years, attributed to stricter emissions regulations and increased use of electric vehicles. 环境保护局报告说,随着公共交通的扩大和可再生能源的采用,城市地区下降最为明显。 The Environmental Protection Agency reports that the decline is most pronounced in urban areas with expanded public transit and renewable energy adoption. 虽然注意到取得了进展,但官员告诫说,由于农业和工业活动,农村地区仍面临污染程度较高的问题。 While progress is noted, officials caution that rural regions still face elevated pollution levels due to agricultural and industrial activity.