Air Quality
Excellent
No health implications.
12
PM2.5
28
PM10
41
O3
0.6
CO
8
SO2
63
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
25 Apr
77
Good
Fri
26 Apr
50
Excellent
Sat
27 Apr
67
Good
Sun
28 Apr
74
Good
Mon
29 Apr
79
Good
Tue
30 Apr
72
Good
Wed
1 May
72
Good
Air quality in the last 12 months (Songjiang)
|
2024/02
|
27
|
31
|
20
|
34
|
46
|
86
|
51
|
82
|
184
|
225
|
111
|
83
|
60
|
70
|
52
|
30
|
28
|
34
|
51
|
23
|
20
|
31
|
59
|
58
|
80
|
85
|
58
|
47
|
29
|
||
|
2024/01
|
100
|
66
|
95
|
121
|
87
|
167
|
93
|
30
|
92
|
132
|
138
|
127
|
162
|
105
|
33
|
33
|
41
|
74
|
45
|
43
|
67
|
48
|
39
|
51
|
65
|
90
|
106
|
117
|
116
|
47
|
35
|
|
2023/12
|
52
|
60
|
88
|
109
|
99
|
97
|
108
|
71
|
78
|
72
|
36
|
50
|
61
|
60
|
48
|
46
|
34
|
30
|
41
|
67
|
44
|
44
|
57
|
78
|
104
|
114
|
90
|
102
|
80
|
112
|
201
|
|
2023/11
|
42
|
34
|
50
|
33
|
25
|
35
|
56
|
51
|
59
|
35
|
29
|
45
|
38
|
57
|
97
|
98
|
96
|
52
|
67
|
92
|
75
|
63
|
119
|
43
|
35
|
46
|
83
|
93
|
75
|
41
|
|
|
2023/10
|
31
|
34
|
32
|
32
|
45
|
33
|
28
|
25
|
45
|
61
|
42
|
42
|
33
|
63
|
74
|
82
|
85
|
72
|
78
|
36
|
43
|
45
|
35
|
44
|
73
|
72
|
67
|
36
|
43
|
45
|
43
|
|
2023/09
|
31
|
43
|
36
|
21
|
32
|
32
|
43
|
39
|
36
|
52
|
43
|
30
|
26
|
26
|
31
|
34
|
50
|
63
|
33
|
27
|
27
|
24
|
24
|
27
|
47
|
62
|
59
|
59
|
55
|
49
|
|
|
2023/08
|
20
|
22
|
30
|
27
|
29
|
37
|
33
|
39
|
37
|
61
|
75
|
60
|
40
|
30
|
34
|
39
|
39
|
39
|
33
|
27
|
37
|
43
|
45
|
54
|
52
|
37
|
23
|
19
|
24
|
25
|
40
|
|
2023/07
|
43
|
57
|
50
|
41
|
39
|
61
|
37
|
37
|
51
|
36
|
62
|
60
|
51
|
65
|
46
|
28
|
18
|
28
|
26
|
30
|
32
|
26
|
29
|
39
|
22
|
22
|
18
|
18
|
18
|
19
|
23
|
|
2023/06
|
42
|
79
|
55
|
45
|
48
|
48
|
56
|
57
|
77
|
63
|
52
|
30
|
25
|
55
|
80
|
74
|
34
|
25
|
26
|
38
|
91
|
85
|
70
|
28
|
26
|
34
|
33
|
49
|
46
|
35
|
|
|
2023/05
|
75
|
52
|
44
|
34
|
35
|
44
|
31
|
37
|
49
|
45
|
53
|
108
|
115
|
98
|
87
|
53
|
34
|
38
|
30
|
39
|
48
|
73
|
99
|
58
|
60
|
58
|
38
|
44
|
61
|
57
|
47
|
|
2023/04
|
57
|
57
|
48
|
30
|
48
|
63
|
89
|
53
|
45
|
47
|
109
|
251
|
160
|
74
|
61
|
70
|
57
|
69
|
30
|
35
|
53
|
82
|
87
|
43
|
47
|
75
|
73
|
60
|
69
|
79
|
|
|
2023/03
|
95
|
78
|
36
|
47
|
49
|
62
|
60
|
63
|
88
|
108
|
51
|
64
|
50
|
49
|
54
|
67
|
29
|
40
|
41
|
40
|
35
|
63
|
99
|
90
|
46
|
63
|
79
|
62
|
58
|
69
|
52
|
|
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
|
- Excellent
- Good
- Lightly
- Moderately
- Heavily
- Severely
Air quality source: CNEMC
*: primary pollution