Air Quality
Excellent
No health implications.
27
PM2.5
45
PM10
82
O3
0.5
CO
14
SO2
34
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
26 Jul
92
Good
Sun
27 Jul
89
Good
Mon
28 Jul
85
Good
Tue
29 Jul
86
Good
Wed
30 Jul
79
Good
Thu
31 Jul
84
Good
Fri
1 Aug
38
Excellent
Air quality in the last 12 months (Chengbei)
|
2025/06
|
37
|
39
|
40
|
38
|
46
|
50
|
49
|
43
|
34
|
34
|
36
|
43
|
41
|
36
|
41
|
39
|
52
|
51
|
36
|
35
|
34
|
30
|
33
|
22
|
34
|
36
|
31
|
37
|
26
|
36
|
|
|
2025/05
|
43
|
81
|
198
|
79
|
59
|
130
|
130
|
58
|
47
|
36
|
56
|
51
|
59
|
34
|
42
|
45
|
72
|
40
|
48
|
48
|
50
|
57
|
51
|
35
|
35
|
47
|
41
|
47
|
79
|
65
|
75
|
|
2025/04
|
121
|
115
|
105
|
144
|
104
|
72
|
108
|
71
|
75
|
56
|
69
|
38
|
45
|
53
|
62
|
105
|
78
|
96
|
106
|
112
|
79
|
79
|
44
|
52
|
56
|
43
|
33
|
47
|
45
|
43
|
|
|
2025/03
|
82
|
58
|
66
|
67
|
58
|
76
|
70
|
57
|
59
|
61
|
218
|
150
|
103
|
48
|
61
|
51
|
52
|
49
|
56
|
62
|
63
|
70
|
59
|
59
|
48
|
359
|
111
|
62
|
77
|
133
|
96
|
|
2025/02
|
66
|
57
|
46
|
53
|
42
|
53
|
53
|
59
|
65
|
57
|
76
|
76
|
74
|
64
|
52
|
56
|
57
|
56
|
74
|
65
|
71
|
69
|
61
|
58
|
55
|
53
|
63
|
56
|
|||
|
2025/01
|
93
|
62
|
76
|
68
|
62
|
72
|
75
|
96
|
92
|
57
|
62
|
51
|
52
|
67
|
69
|
64
|
76
|
61
|
62
|
61
|
85
|
71
|
94
|
90
|
86
|
60
|
58
|
73
|
165
|
60
|
49
|
|
2024/12
|
62
|
65
|
84
|
62
|
74
|
92
|
66
|
72
|
82
|
64
|
91
|
61
|
62
|
100
|
103
|
67
|
79
|
82
|
84
|
101
|
107
|
134
|
136
|
118
|
117
|
103
|
56
|
82
|
88
|
93
|
71
|
|
2024/11
|
62
|
52
|
61
|
56
|
59
|
70
|
59
|
55
|
78
|
68
|
64
|
60
|
55
|
80
|
98
|
53
|
55
|
56
|
74
|
75
|
79
|
74
|
87
|
46
|
39
|
73
|
54
|
54
|
92
|
98
|
|
|
2024/10
|
27
|
37
|
48
|
48
|
47
|
48
|
52
|
51
|
39
|
42
|
49
|
38
|
45
|
52
|
57
|
31
|
39
|
45
|
45
|
50
|
62
|
40
|
54
|
58
|
55
|
39
|
45
|
49
|
64
|
65
|
45
|
|
2024/09
|
42
|
40
|
36
|
19
|
17
|
22
|
25
|
48
|
20
|
21
|
27
|
31
|
18
|
28
|
42
|
23
|
28
|
37
|
42
|
22
|
27
|
38
|
35
|
47
|
49
|
39
|
65
|
53
|
26
|
20
|
|
|
2024/08
|
44
|
24
|
27
|
30
|
39
|
33
|
34
|
36
|
38
|
24
|
35
|
39
|
47
|
20
|
27
|
29
|
33
|
30
|
36
|
38
|
46
|
52
|
46
|
36
|
29
|
30
|
46
|
46
|
29
|
47
|
37
|
|
2024/07
|
22
|
29
|
26
|
37
|
44
|
54
|
53
|
40
|
47
|
49
|
47
|
45
|
43
|
30
|
48
|
42
|
33
|
36
|
28
|
46
|
180
|
49
|
45
|
60
|
54
|
60
|
51
|
25
|
25
|
36
|
32
|
|
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