Indicators	CO	O₃	SO₂	NO₂	PM10	PM25
Whole year
Average temperature	−0.777**	0.586**	−0.839**	−0.556**	−0.579**	−0.754**
Min temperature	−0.757**	0.580**	−0.813**	−0.534**	−0.546**	−0.728**
Max temperature	−0.789**	0.573**	−0.862**	−0.576**	−0.610**	−0.771**
Wind velocity	−0.593**	0.482**	−0.581**	−0.545**	−0.429**	−0.510**
Wind max velocity	−0.611**	0.587**	−0.614**	−0.556**	−0.482**	−0.615**
Humidity	0.399**	−0.468**	0.352**	0.284**	0.186**	0.375**
Cold season
Average temperature	−0.713**	0.510**	−0.801**	−0.448**	−0.533**	−0.741**
Min temperature	−0.676**	0.498**	−0.771**	−0.425**	−0.498**	−0.706**
Max temperature	−0.735**	0.502**	−0.816**	−0.462**	−0.552**	−0.756**
Wind velocity	−0.629**	0.507**	−0.614**	−0.545**	−0.454**	−0.589**
Wind max velocity	−0.676**	0.621**	−0.661**	−0.570**	−0.534**	−0.695**
Humidity	0.495**	−0.429**	0.514**	0.359**	0.313**	0.509**
Warm season
Average temperature	−0.047	0.446**	0.121**	0.072*	0.155**	0.091**
Min temperature	−0.036	0.436**	0.217**	0.109**	0.246**	0.142**
Max temperature	−0.076*	0.362**	−0.083**	−0.026	−0.033	0.006
Wind velocity	−0.197**	0.156**	−0.193**	−0.240**	−0.020	0.076*
Wind max velocity	−0.062*	0.227**	−0.048	−0.134**	0.016	−0.016
Humidity	−0.044	−0.416**	−0.428**	−0.166**	−0.416**	−0.159**