Multivariate regression models for real-time coastal air quality forecasting were suggested from 18 to 27 March 2015, with a total of 15 kinds hourly input data (three-hours-earlier PM and gas meteorological parameters Kangnung (Korea), associated two-days-earlier Beijing (China)). Multiple correlation coefficients between the predicted measured PM10, PM2.5, NO2, SO2, CO O3 concentrations 0.957...