美国空气最清新的城市

Santa Fe, N.M.
Population: 188,210
新墨西哥圣达菲
人口：18 8210

Popular for both its art galleries and clean air, it may come as no surprise that a Santa Fe artist recently unveiled a sculpture that measures particulate air pollution.
圣达菲以美术馆和清新空气闻名，所以，一名圣达菲艺术家最近公布了一个雕刻品，测量空气颗粒物污染，这一点也不令人惊奇。

The city’s growing population cares about air quality too. There are strict rules that limit wood burning, a source of particulates. (The area has more than 1.5 million acres of national forest.)
该城市逐渐增加的人群也引起了对空气质量的担忧。严格法规限制焚烧木材，木材是微粒物质的来源之一。（这个地区拥有的国家森林超过150万英亩。）

Santa Fe is one of only 20 U.S. cities the ALA looked at with consistently safe ozone levels. (While the atmosphere’s ozone protects us from the sun’s rays, ground-level ozone is a pollutant.)
圣达菲是美国汽车法律协会（ALA）观察的臭氧水平一贯在安全范围的20个城市中唯一的一个。（大气层中的臭氧保护我们免受阳光的辐射，而地面的臭氧是一种污染物。）