The worst year of smog in Beijing

As of February 20th, 2023, the year with the worst smog in this area was 20 14.

2065438+From February 20 to 26, 2004, there was a severe smog weather in Beijing that lasted for 7 days, the longest duration and the most serious air quality in Beijing in recent years.

The heating period in winter is the worst period of smog in Beijing, and the air index fluctuates obviously during this period. The most serious is 65438+ 10 month, followed by 65438+February.