Pollution? Blame uptick in production

Meteorological conditions conspire to keep smog from moving out of region

Unfavorable meteorological conditions and more pollutants spewed from factories whose production restrictions were lifted after the heating season are to blame for the recent extended haze in the Beijing-Tianjin-Hebei region, experts said.

Beijing issued a blue alert for air pollution on Sunday and Monday. It was the third air pollution alert for the city in about 20 days. An orange alert for air pollution was issued twice in March.