1月29日，中國(guó)的灰霾面積達(dá)130萬(wàn)平方公里。環(huán)保部有關(guān)負(fù)責(zé)人昨日表示，截至當(dāng)日上午10時(shí)，北京、天津、石家莊、濟(jì)南等城市空氣質(zhì)量為六級(jí)，屬嚴(yán)重污染;鄭州、武漢、西安、合肥、南京、沈陽(yáng)、長(zhǎng)春等城市空氣質(zhì)量為五級(jí)，屬重度污染。

　　記者昨日還獲悉，氣象部門針對(duì)霾預(yù)警信號(hào)標(biāo)準(zhǔn)進(jìn)行了修訂，首次將PM2.5作為發(fā)布預(yù)警的重要指標(biāo)之一。這意味著PM2.5首次成為氣象部門霾預(yù)警指標(biāo)。

　　記者從北京兩會(huì)上獲悉，北京計(jì)劃于今年年底前出臺(tái)《大氣污染治理?xiàng)l例》，切實(shí)改善城市空氣質(zhì)量水平。

　　China's meteorological authority has introduced a new weather warning system for smog which will use readings of PM2.5, a particle pollutant.

　　The announcement comes as thick haze chokes many cities.

　　The National Meteorological Center (NMC) has introduced a three-tier color-coded weather warning system to alert the public to the severity of smog. The system uses yellow to imply moderately smoggy weather, orange for severe conditions and red for extremely severe levels of smog.

　　The system not only measures the density of PM 2.5, a major pollutant that triggers smog, but also takes into account visibility and relative humidity to better reflect air quality conditions, according to the center.

　　The smog that has blanketed many Chinese cities in recent days has affected a total area of 1.3 million square kilometers, according to the Ministry of Environmental Protection.

　　The municipalities of Beijing and Tianjin, together with the provinces of Hebei, Shandong and Henan, will remain the hardest-hit regions on Tuesday evening through Wednesday daytime.

　　However, rain and snow that is expected to fall on Wednesday night will help disperse the smog in central and eastern regions, the NMC said.

　　Earlier this month, several consecutive days of smoggy weather choked Beijing and other cities in north and east China, as readings for PM 2.5 far exceeded safe levels.

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