Influence of Urban Atmospheric Ecological Environment on the Development of Outdoor Sports

Table 2

Air quality status.

Air quality factor	Excellent	Good	Light pollution	Moderately pollution	Heavy pollution	Serious pollution
Series	1	2	3	4	5	6
Index	0–50	51–100	101–150	151–200	201–300	>300
Days	114	126	98	22	5	0
Annual total pollution (%)	31.23	34.52	26.85	6.03	1.37	0.00