海淀区气象台18日05时00分发布大雾黄色预警,当前海淀区能见度较低,预计当前至18日09时,海淀区有大雾天气,局地能见度小于500米,请注意防范。市气象台2019年10月18日05时50分发布大雾黄色预警信号:预计当前至10时,城区及南部地区有雾,部分地区能见度小于500米,请注意防范。
海淀区气象台18日05时00分发布大雾黄色预警,当前海淀区能见度较低,预计当前至18日09时,海淀区有大雾天气,局地能见度小于500米,请注意防范。市气象台2019年10月18日05时50分发布大雾黄色预警信号:预计当前至10时,城区及南部地区有雾,部分地区能见度小于500米,请注意防范。
当前
明天
后天

海淀空气质量

64

0
50
100
150
200
300
500
空气良好,可以正常参加户外活动。

无需戴口罩

适宜外出

适宜开窗

关闭净化器

主要污染物

 

PM2.5

46

PM10

43

O3

1

NO2

38

SO2

2

海淀空气质量

150

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。

建议戴口罩

减少外出

减少开窗

开启净化器

主要污染物

 

PM2.5

19

PM10

36

O3

20

NO2

41

SO2

2

海淀空气质量

90

0
50
100
150
200
300
500
空气良好,可以正常参加户外活动。

无需戴口罩

适宜外出

适宜开窗

关闭净化器

主要污染物

 

PM2.5

11

PM10

28

O3

39

NO2

28

SO2

1

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