Air Quality
Excellent
No health implications.
15
PM2.5
34
PM10
104
O3
0.5
CO
7
SO2
17
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
4 May
58
Good
Mon
5 May
58
Good
Tue
6 May
98
Good
Wed
7 May
81
Good
Thu
8 May
81
Good
Fri
9 May
19
Excellent
Sat
10 May
15
Excellent
Air quality in the last 12 months (Hongkou)
|
2025/02
|
28
|
56
|
72
|
61
|
56
|
34
|
53
|
35
|
40
|
49
|
28
|
74
|
34
|
33
|
60
|
115
|
56
|
39
|
44
|
26
|
33
|
58
|
53
|
73
|
78
|
130
|
132
|
61
|
|||
|
2025/01
|
56
|
44
|
54
|
39
|
65
|
95
|
65
|
73
|
31
|
39
|
55
|
69
|
90
|
102
|
36
|
56
|
71
|
72
|
93
|
158
|
107
|
29
|
36
|
35
|
31
|
42
|
55
|
41
|
86
|
43
|
36
|
|
2024/12
|
61
|
84
|
75
|
29
|
51
|
136
|
126
|
24
|
29
|
37
|
54
|
46
|
62
|
69
|
62
|
60
|
80
|
62
|
36
|
50
|
87
|
45
|
37
|
47
|
66
|
125
|
42
|
57
|
70
|
67
|
75
|
|
2024/11
|
8
|
50
|
82
|
61
|
23
|
21
|
23
|
27
|
32
|
29
|
37
|
45
|
55
|
39
|
64
|
48
|
21
|
19
|
22
|
26
|
62
|
78
|
15
|
24
|
33
|
40
|
58
|
69
|
52
|
61
|
|
|
2024/10
|
19
|
25
|
21
|
19
|
18
|
11
|
13
|
44
|
34
|
68
|
76
|
61
|
26
|
39
|
53
|
31
|
35
|
39
|
27
|
38
|
43
|
56
|
44
|
21
|
36
|
14
|
16
|
55
|
19
|
29
|
23
|
|
2024/09
|
35
|
38
|
25
|
26
|
24
|
41
|
46
|
29
|
25
|
30
|
13
|
25
|
18
|
18
|
23
|
16
|
21
|
24
|
28
|
17
|
20
|
29
|
26
|
28
|
25
|
19
|
29
|
35
|
36
|
36
|
|
|
2024/08
|
35
|
46
|
46
|
35
|
35
|
34
|
32
|
38
|
35
|
38
|
43
|
49
|
42
|
21
|
28
|
35
|
22
|
16
|
20
|
27
|
22
|
42
|
32
|
32
|
28
|
25
|
41
|
33
|
17
|
28
|
26
|
|
2024/07
|
35
|
26
|
26
|
40
|
46
|
39
|
43
|
40
|
41
|
38
|
24
|
30
|
47
|
67
|
49
|
25
|
34
|
35
|
39
|
33
|
36
|
29
|
21
|
28
|
33
|
37
|
30
|
28
|
19
|
20
|
29
|
|
2024/06
|
65
|
19
|
40
|
51
|
31
|
18
|
23
|
28
|
37
|
28
|
16
|
33
|
62
|
43
|
27
|
28
|
18
|
22
|
22
|
32
|
46
|
38
|
22
|
31
|
35
|
27
|
16
|
20
|
31
|
24
|
|
|
2024/05
|
37
|
35
|
36
|
38
|
37
|
61
|
65
|
40
|
24
|
31
|
57
|
60
|
66
|
42
|
45
|
34
|
37
|
36
|
34
|
30
|
28
|
36
|
27
|
22
|
25
|
29
|
23
|
19
|
25
|
37
|
59
|
|
2024/04
|
71
|
32
|
34
|
43
|
53
|
47
|
43
|
37
|
61
|
65
|
50
|
34
|
27
|
26
|
52
|
50
|
27
|
75
|
110
|
50
|
33
|
38
|
45
|
46
|
33
|
39
|
27
|
30
|
48
|
38
|
|
|
2024/03
|
39
|
59
|
64
|
39
|
40
|
55
|
46
|
79
|
87
|
49
|
63
|
105
|
51
|
59
|
42
|
42
|
67
|
61
|
79
|
99
|
65
|
69
|
75
|
83
|
64
|
41
|
40
|
56
|
64
|
62
|
77
|
|
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