许昌空气质量
146轻度污染
0
50
100
150
200
300
500
空气一般，敏感人员外出时，需做好防护措施。
许昌空气质量
177中度污染
0
50
100
150
200
300
500
空气不好，大家外出时，需做好防护措施。
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