Air Quality
Excellent
No health implications.
6
PM2.5
15
PM10
29
O3
0.8
CO
5
SO2
15
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
17 Oct
32
Excellent
Sun
18 Oct
33
Excellent
Mon
19 Oct
35
Excellent
Tue
20 Oct
39
Excellent
Wed
21 Oct
36
Excellent
Thu
22 Oct
40
Excellent
Fri
23 Oct
15
Excellent
Air quality in the last 12 months (Chengkou)
|
2026/08
|
19
|
15
|
13
|
11
|
15
|
20
|
25
|
27
|
31
|
28
|
25
|
27
|
25
|
22
|
24
|
26
|
34
|
31
|
26
|
26
|
27
|
27
|
25
|
24
|
20
|
21
|
24
|
26
|
20
|
30
|
33
|
|
2026/07
|
35
|
24
|
27
|
26
|
26
|
25
|
27
|
30
|
26
|
22
|
21
|
19
|
22
|
23
|
24
|
25
|
20
|
27
|
47
|
38
|
40
|
39
|
35
|
31
|
31
|
26
|
22
|
19
|
20
|
19
|
20
|
|
2026/06
|
41
|
46
|
43
|
47
|
44
|
38
|
25
|
21
|
26
|
31
|
31
|
26
|
27
|
33
|
34
|
31
|
31
|
20
|
21
|
24
|
23
|
18
|
18
|
22
|
25
|
24
|
29
|
26
|
26
|
24
|
|
|
2026/05
|
48
|
28
|
33
|
37
|
40
|
39
|
30
|
39
|
34
|
38
|
55
|
73
|
40
|
36
|
34
|
29
|
20
|
21
|
17
|
25
|
37
|
28
|
28
|
27
|
16
|
22
|
23
|
21
|
23
|
25
|
32
|
|
2026/04
|
33
|
40
|
43
|
66
|
67
|
62
|
55
|
41
|
31
|
40
|
36
|
30
|
29
|
24
|
24
|
30
|
44
|
50
|
61
|
85
|
50
|
20
|
27
|
32
|
43
|
55
|
49
|
28
|
34
|
42
|
|
|
2026/03
|
16
|
19
|
25
|
38
|
42
|
43
|
37
|
25
|
27
|
31
|
35
|
77
|
84
|
49
|
18
|
18
|
21
|
25
|
46
|
46
|
49
|
50
|
50
|
28
|
28
|
37
|
42
|
40
|
38
|
24
|
27
|
|
2026/02
|
60
|
63
|
69
|
79
|
82
|
81
|
98
|
73
|
54
|
55
|
57
|
58
|
73
|
72
|
64
|
35
|
73
|
58
|
57
|
57
|
57
|
71
|
73
|
46
|
43
|
29
|
26
|
16
|
|||
|
2026/01
|
24
|
41
|
56
|
66
|
61
|
59
|
62
|
70
|
82
|
81
|
85
|
102
|
113
|
104
|
111
|
91
|
110
|
121
|
58
|
36
|
48
|
50
|
57
|
65
|
77
|
72
|
64
|
62
|
52
|
29
|
43
|
|
2025/12
|
84
|
99
|
74
|
68
|
65
|
65
|
75
|
75
|
81
|
98
|
97
|
125
|
43
|
53
|
60
|
64
|
80
|
84
|
97
|
86
|
31
|
56
|
39
|
49
|
52
|
57
|
64
|
77
|
88
|
104
|
65
|
|
2025/11
|
38
|
42
|
50
|
54
|
51
|
39
|
16
|
21
|
27
|
48
|
46
|
44
|
49
|
49
|
53
|
49
|
20
|
19
|
29
|
40
|
45
|
60
|
52
|
45
|
43
|
54
|
70
|
70
|
68
|
80
|
|
|
2025/10
|
15
|
12
|
14
|
12
|
16
|
21
|
23
|
20
|
30
|
28
|
31
|
26
|
12
|
17
|
14
|
19
|
14
|
16
|
17
|
12
|
10
|
23
|
29
|
48
|
34
|
27
|
32
|
38
|
41
|
32
|
34
|
|
2025/09
|
24
|
27
|
23
|
24
|
24
|
15
|
17
|
17
|
16
|
23
|
18
|
13
|
15
|
20
|
29
|
26
|
20
|
15
|
11
|
13
|
16
|
16
|
13
|
13
|
24
|
17
|
16
|
19
|
11
|
12
|
|
|
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