Criteria for judging air pollution in weather forecast

Sulfur dioxide, nitrogen oxides (no\no2), particulate matter in the air (inhalable substances), etc.

Air quality forecast

Air quality is related to the concentrations of sulfur dioxide, nitrogen dioxide and inhalable particles in the air. Air quality forecast is to forecast the concentrations of the above three main pollutants and the main pollutants in the next 24 hours by using various meteorological factors, and at the same time divide the air quality grades according to the concentrations of the main pollutants in the air. * * * There are five grades: excellent grade I, good grade II, mild pollution grade III, moderate pollution grade IV and severe pollution grade V..

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