Traditional Culture Encyclopedia - Weather inquiry - To what extent is smog a first-order reaction?

To what extent is smog a first-order reaction?

Please adopt the classification of smog weather warning grades.

According to the classification method and hazard degree in Technical Regulations of Ambient Air Quality Index, it is divided into three levels:

Level 1 (extremely heavy pollution), that is, the air quality index in this area has been above 500 for 24 consecutive hours.

Grade II (serious pollution), that is, the air quality index in this area for 48 hours is within the range of 30 1 to 500 (inclusive).

Grade III (heavy pollution), that is, the air quality index in this area for 72 hours is within the range of 20 1 to 300 (inclusive).