上一周(8月31日~9月6日)汕头市城区空气质量指数(AQI)范围为58~109,5天为“良”等级,2天为“轻度污染”等级,超标污染物为臭氧。空气质量综合指数为3.19,环比上升0.69,空气质量明显变差。可吸入颗粒物(PM10)周浓度均值为45微克/立方米,细颗粒物(PM2.5)周浓度均值27微克/立方米。
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