BEIJING — In the first three months of this year, levels of two major air pollutants increased by almost 30 percent here in the Chinese capital, over the same period in 2012, according to a report on Wednesday by a Chinese news organization.

The pollutants — nitrogen dioxide and particulate matter that is between 2.5 and 10 micrometers in diameter, called PM 10 — appeared to have surged sharply in January, showing levels 47 percent higher than the same month last year, according to the report by Beijing News that was translated into English by The Economic Observer. The report cited as its source Chen Tian, the head of the Beijing Municipal Environmental Protection Bureau.

A third pollutant, sulfur dioxide, decreased slightly over the same three-month period.

Mr. Chen said the main reason for the increase in two pollutants was high levels of emissions. Citing Mr. Chen, the report said “the emissions created by those living and producing in the city far exceed what the environment can take.”

The report said the environmental bureau had concluded that the increases in the two pollutants had been also partly due to topography and weather conditions. Beijing recently had its highest levels of relative humidity in a decade, and surface wind speeds were the lowest in 10 years, which together resulted in a lower-temperature inversion layer that trapped pollutants, the report said.