Real-time air quality forecasting, part I: History, techniques, and current status

► A comprehensive review for real-time air quality forecasting (RT-AQF). ► Major milestones in the history of RT-AQF. ► Assessment of major RT-AQF techniques. ► A detailed review of 3-D RT-AQF models. ► Evaluation protocols and review of current forecasting skills of RT-AQF models.