Abstract
With the development of modern society, air pollution has arisen and people's healthy life is threatened, drawing the attention of contemporary society. In this paper, the influencing factors related to PM2.5 concentration and their importance are obtained analytically by linear interpolation method with the help of multiple linear regression and random forest model with respect to air pollution. Meanwhile, based on LSTM model and SARIMA model, the PM2.5 concentration is weighted to predict the air quality for prewarning. Finally, a multi-step prediction model of AQI is developed, and the air quality index (AQI) is used to measure the air quality condition and explore the factors affecting the AQI value.
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