排灯节前夕德里成全球污染最重城市：IQAir指数581
印度首都新德里 11 月 7 日星期六上午成为全球污染最重的主要城市，排灯节前一天的空气质量进一步恶化。路透社报道，瑞士空气质量监测机构 IQAir 的实时排名显示，新德里当天上午 10 时 35 分的美式空气质量指数（AQI）为 581，约为第二名巴基斯坦拉合尔（285）的两倍。
印度中央污染控制委员会（CPCB）同一时段公布的指数为 363，属于“很差”级别。两个指数采用不同的计算标准与方法，不能直接比较。委员会的数据显示，新德里 11 月 6 日星期五 24 小时平均指数为 382；当地媒体援引官方数据称，这是八年来排灯节前最差的空气质量。11 月 7 日上午，全市 59 个监测站中有 18 个录得“严重”级别，空气质量预警系统预计指数当天将升至“严重”类别。
印度空气质量管理委员会已于 11 月 6 日在整个德里国家首都辖区启动分级响应行动计划（GRAP）第三阶段。排灯节为 11 月 8 日星期日，印度最高法院只允许 11 月 7 日至 8 日燃放经认证的绿色爆竹，11 月 9 日起恢复全面禁令。德里环境部长曼金德·辛格·西尔萨警告，天气条件可能进一步恶化。
Delhi Becomes World's Most Polluted Major City Ahead of Diwali, IQAir Index at 581
India's capital New Delhi was the world's most polluted major city on Saturday morning, November 7, as air quality worsened a day before Diwali, the Hindu festival of lights. Reuters reported that Swiss air-quality group IQAir ranked Delhi first among the world's major cities at 10:35 a.m. local time, with a US air quality index reading of 581, roughly double the reading of 285 for Lahore, Pakistan, in second place.
India's Central Pollution Control Board (CPCB) put Delhi's air quality index at 363 at 10 a.m., in the "very poor" category. The two indexes use different scales and methodologies and are not directly comparable. The board's data showed a 24-hour average index of 382 at 4 p.m. on Friday, and local media, citing official data, said Friday's air quality was the worst pre-Diwali air in eight years. On Saturday morning, 18 of the city's 59 monitoring stations recorded air quality in the "severe" category, and the Air Quality Early Warning System forecast the index would reach "severe" later on Saturday.
The Commission for Air Quality Management invoked Stage III of the Graded Response Action Plan (GRAP) across the Delhi-NCR region on November 6. Diwali falls on Sunday, November 8, and India's Supreme Court has allowed certified green crackers in Delhi-NCR only on November 7 and 8, with the full firecracker ban restored from November 9. Delhi Environment Minister Manjinder Singh Sirsa warned that weather conditions could worsen further.
来源：路透社
发布：GSM·美国（发布链接）
图片来源：图：纽约市政厅（资料图）。New York City Hall. (file photo)
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