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雾霾,是雾和霾的组合词,是对大气中各种悬浮颗粒物含量超标的笼统表述,尤其是PM 2.5(指大气中直径小于或等于2.5微米的颗粒物,也称为可入肺颗粒物,其完整拼写为ParticulateM atter2.5)被认为是造成雾霾天气的“元凶”。雾霾天气是一种大气污染状态。2013年,“雾霾”成为年度关键词,这一年的1月,4次雾霾过程笼罩全国30个省(区、市),在北京,仅有5天不是雾霾
Haze, a combination of fog and haze, is a general expression of excessive levels of all suspended particulates in the atmosphere. In particular, PM 2.5, which refers to particulates with an average diameter of less than or equal to 2.5 microns in the atmosphere, Its complete spelling of ParticulateM atter 2.5) is considered the “culprit” of hazy weather. Smog weather is a state of air pollution. In 2013, “haze” became the key word of the year. In January this year, four haze processes covered 30 provinces (autonomous regions and municipalities) across the country. In Beijing, only five days were not haze