BEIJING: China's capital city of Beijing has been shrouded in thicker-than-usual pollution for several days, with air pollution indexes reaching dangerous levels. Local authorities have warned the severe pollution is likely to continue until Monday.

Monitors at the U.S. Embassy in Beijing recorded an air-quality readings as high as of 481 on Saturday. The monitors measure the level of air-borne PM 2.5 particulates with the maximum reading of 500. The tiny particular matters are considered the most harmful to health.

A reading between 301 and 500 means the air is so hazardous that people should avoid outdoor physical activities.

Beijing Municipal Environmental Monitoring Center has reported readings of the tiny particular matter of between 176 and 442 from its monitors throughout the greater Beijing area from Friday.