优
空气质量令人满意,基本无空气污染
各类人群可正常活动
2020/11
|
22
|
26
|
19
|
19
|
17
|
18
|
18
|
18
|
20
|
26
|
26
|
29
|
25
|
29
|
28
|
28
|
26
|
24
|
22
|
21
|
25
|
22
|
23
|
29
|
32
|
28
|
27
|
23
|
24
|
26
|
|
2020/10
|
19
|
17
|
15
|
17
|
15
|
15
|
16
|
18
|
18
|
20
|
20
|
18
|
19
|
23
|
21
|
19
|
19
|
16
|
18
|
19
|
20
|
19
|
22
|
20
|
17
|
19
|
19
|
18
|
24
|
29
|
28
|
2020/09
|
19
|
18
|
20
|
17
|
16
|
20
|
21
|
17
|
18
|
21
|
18
|
16
|
15
|
16
|
18
|
18
|
18
|
20
|
19
|
20
|
19
|
19
|
21
|
17
|
16
|
18
|
17
|
21
|
21
|
19
|
|
2020/08
|
15
|
22
|
20
|
18
|
19
|
21
|
19
|
19
|
22
|
21
|
18
|
17
|
22
|
20
|
15
|
16
|
20
|
23
|
23
|
21
|
23
|
22
|
20
|
22
|
26
|
25
|
25
|
19
|
21
|
17
|
21
|
2020/07
|
22
|
22
|
24
|
20
|
17
|
15
|
18
|
20
|
16
|
17
|
16
|
18
|
17
|
16
|
13
|
15
|
20
|
22
|
22
|
17
|
16
|
14
|
13
|
15
|
15
|
21
|
27
|
25
|
17
|
15
|
18
|
2020/06
|
25
|
24
|
20
|
18
|
21
|
20
|
18
|
23
|
21
|
18
|
19
|
21
|
21
|
19
|
17
|
18
|
19
|
18
|
15
|
18
|
17
|
19
|
18
|
22
|
23
|
21
|
20
|
20
|
16
|
19
|
|
2020/05
|
23
|
23
|
27
|
31
|
31
|
31
|
32
|
28
|
27
|
25
|
29
|
24
|
22
|
22
|
22
|
25
|
26
|
24
|
22
|
27
|
26
|
22
|
19
|
20
|
19
|
21
|
21
|
22
|
24
|
25
|
26
|
2020/04
|
22
|
20
|
19
|
18
|
19
|
16
|
17
|
18
|
22
|
19
|
19
|
18
|
35
|
38
|
28
|
26
|
28
|
29
|
32
|
25
|
24
|
24
|
27
|
24
|
23
|
27
|
27
|
23
|
22
|
23
|
|
2020/03
|
18
|
20
|
22
|
20
|
18
|
19
|
20
|
21
|
22
|
22
|
18
|
17
|
18
|
18
|
21
|
22
|
24
|
22
|
23
|
21
|
23
|
27
|
20
|
28
|
22
|
22
|
22
|
19
|
18
|
19
|
17
|
2020/02
|
20
|
19
|
19
|
19
|
20
|
21
|
20
|
19
|
20
|
20
|
20
|
19
|
18
|
19
|
18
|
19
|
17
|
16
|
18
|
17
|
18
|
16
|
19
|
26
|
21
|
20
|
21
|
19
|
19
|
||
2020/01
|
30
|
27
|
28
|
26
|
25
|
26
|
27
|
28
|
28
|
24
|
26
|
24
|
27
|
28
|
24
|
24
|
19
|
19
|
20
|
19
|
19
|
19
|
19
|
20
|
23
|
21
|
19
|
18
|
21
|
17
|
17
|
2019/12
|
19
|
18
|
21
|
20
|
22
|
30
|
29
|
25
|
24
|
27
|
27
|
25
|
26
|
29
|
28
|
28
|
22
|
22
|
24
|
29
|
22
|
22
|
29
|
29
|
28
|
36
|
23
|
29
|
26
|
27
|
23
|
1
|
2
|
3
|
4
|
5
|
6
|
7
|
8
|
9
|
10
|
11
|
12
|
13
|
14
|
15
|
16
|
17
|
18
|
19
|
20
|
21
|
22
|
23
|
24
|
25
|
26
|
27
|
28
|
29
|
30
|
31
|