2015年4月20日，全国空气质量继续普遍良好态势。东北部分地区受浮尘和生物质燃烧烟雾影响。西藏那曲浮尘造成PM10轻度污染。河南、河北少数地区PM2.5污染。广西和青海各有一城市臭氧污染。南疆大部分地区沙尘影响减弱，但是和田仍旧出现PM10浓度爆表。MODIS卫星图片（10：30AM)上，生物质燃烧烟雾跨境影响我国东北部分地区。
中国环境监测总站城市日报截图：2015年4月20日
NASA TERRA 2015年4月20日10:30AM真彩图片，来自NASA Worldview.
NASA AQUA 2015年4月20日1:30PM真彩图片，来自NASA Worldview.
NASA TERRA 2015年4月20日10:30AM真彩图片，东北地区放大,来自NASA Worldview.。
NASA TERRA 2015年4月20日10:30AM真彩图片并显示火点，东北地区放大。
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