Prediction of Air Quality Based on Hybrid Grey Double Exponential Smoothing Model

Table 7

The forecasting results of PM₁₀ concentration.

Date	Actual value	CFES	AAES	Hybrid model
Parameter	—
1-Dec	75	75	75	75
2-Dec	44	44.00	43.90	43.94
3-Dec	61	74.02	57.77	63.67
4-Dec	66	83.19	66.00	72.24
5-Dec	58	72.08	60.22	64.52
6-Dec	65	71.21	65.22	67.40
7-Dec	63	66.22	64.40	65.06
8-Dec	60	59.99	60.81	60.51
9-Dec	97	94.36	97.00	96.04
10-Dec	120	126.12	129.08	128.01
MAPE	—	9.42%	2.08%	4.07%
11-Dec	122	95.41	138.30	122.73
12-Dec	126	98.93	152.98	133.35
13-Dec	154	102.28	166.35	143.08
MAPE	—	25.62%	14.26%	4.51%