Off the wire
Dollar changes hands in lower 108 yen range in early Tokyo trading  • High schoolers take to street in Potland against U.S. President-elect  • Chicago agricultural commodities close lower on stronger U.S. Dollar  • Vice premier's visit to further China-France pragmatic economic cooperation  • Energy helps Canadian stocks open week ahead  • APEC 2016: Chinese visitors to Peru rank No. 1 in business, investment  • Real Madrid takes Campus Experience to Cuba  • DeMar DeRozan, James Harden named Players of the Week  • ATP World Tour Finals results  • Airlift to evacuate tourists from New Zealand quake zone  
You are here:   Home/ Environment

Beijing average PM2.5 density down in first ten months of 2015

Xinhua, November 15, 2016 Adjust font size:

Beijing's average PM2.5 density decreased in the first ten months of this year, authorities said Monday.

Beijing's average density of hazardous fine particulate matter from January to October was 64 micrograms per cubic meter, a year-on-year decrease of 8.6 percent, according to the Beijing Municipal Environmental Protection Bureau.

With a diameter of less than 2.5 micrometers, PM2.5 is particulate matter that causes hazardous smog.

The capital city saw 172 days with good air quality during the ten months, 11 days more than the same period last year.

Average densities of sulfur dioxide, nitrogen dioxide and PM10 (particulate matter with a diameter of less than 10 micrometers) from Jan. to Oct. were down by 30.8 percent, 6.5 percent and 12.9 percent year on year, respectively, according to the bureau.

But as Beijing enters the heating season in November, its air is likely to become foul again, according to the Beijing Municipal Environmental Monitoring Center.

Beijing is transforming its coal-fired boilers with clean energy in a move to clear up the air.

After completion at the end of this year, the green equipment will help slash Beijing's coal use by two million tonnes. That means an annual decrease of dust by about 30,000 tonnes, reducing sulfur dioxide by about 16,000 tonnes and nitrogen oxide by about 5,000 tonnes.