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人参与 | 时间：2025-04-20 09:19:31
- 中国环境监测总站联合中央气象台、月上优良国家大气污染防治攻关联合中心等，半月开展2025年4月上半月（4月1日—15日）全国空气质量预报会商。全国4月上半月，大部度污全国大部空气质量以优良至轻度污染为主。空气西北地区受沙尘天气影响，至轻主可能出现中至重度污染。月上优良半月
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