-
0-50
excellent
The air quality is satisfactory, there is basically no air pollution, and there is no harm to health
All kinds of people can take part in more outdoor activities and breathe more fresh air.
-
51-100
good
Except for a few people who are particularly sensitive to some pollutants, it will not cause harm to human health
Except for a few people who are particularly allergic to certain pollutants, other people can normally carry out outdoor activities.
-
101-150
Slight pollution
Symptoms of sensitive people will be slightly aggravated, without significant impact on healthy people
Children, the elderly and patients with heart disease and respiratory disease should try to reduce outdoor activities with high physical consumption.
-
151-200
Moderate pollution
The symptoms of sensitive people are further aggravated, which may affect the heart and respiratory system of healthy people
Children, the elderly and patients with heart disease and respiratory disease should try their best to avoid going out and staying indoors, while the general population should reduce outdoor sports appropriately.
-
201-300
Heavy pollution
The air condition is very poor, which will cause serious harm to everyone's health
Children, the elderly and patients with heart and lung diseases should stay indoors and stop outdoor sports. The general population should try to reduce outdoor sports.
-
>300
Serious pollution
The air condition is extremely poor, and everyone's health will be seriously endangered
Children, the elderly and patients should stay indoors to avoid physical exertion. Except for people with special needs, ordinary people should try not to stay outdoors.
