Air Quality
Excellent
No health implications.
14
PM2.5
21
PM10
14
O3
0.9
CO
5
SO2
16
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
9 Mar
34
Excellent
Tue
10 Mar
50
Excellent
Wed
11 Mar
54
Good
Thu
12 Mar
43
Excellent
Fri
13 Mar
37
Excellent
Sat
14 Mar
36
Excellent
Sun
15 Mar
24
Excellent
Chengkou Air quality rank
Air quality in the last 12 months (Chengkou)
|
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
|
|
|
2025/08
|
27
|
25
|
29
|
33
|
31
|
23
|
26
|
20
|
17
|
13
|
18
|
23
|
20
|
27
|
23
|
18
|
23
|
24
|
30
|
22
|
19
|
20
|
18
|
19
|
23
|
26
|
26
|
25
|
18
|
18
|
22
|
|
2025/07
|
16
|
20
|
22
|
20
|
16
|
21
|
18
|
17
|
23
|
22
|
30
|
35
|
33
|
34
|
32
|
30
|
34
|
24
|
24
|
26
|
26
|
21
|
16
|
13
|
13
|
17
|
22
|
23
|
21
|
20
|
25
|
|
2025/06
|
15
|
23
|
36
|
40
|
36
|
40
|
23
|
22
|
27
|
38
|
36
|
40
|
38
|
28
|
40
|
50
|
37
|
30
|
15
|
25
|
19
|
22
|
24
|
25
|
20
|
15
|
22
|
25
|
16
|
20
|
|
|
2025/05
|
55
|
62
|
62
|
42
|
39
|
57
|
49
|
51
|
53
|
60
|
54
|
53
|
48
|
38
|
56
|
52
|
65
|
54
|
61
|
60
|
56
|
39
|
43
|
50
|
50
|
45
|
40
|
31
|
35
|
41
|
26
|
|
2025/04
|
46
|
60
|
61
|
53
|
60
|
63
|
56
|
55
|
55
|
42
|
41
|
336
|
200
|
105
|
67
|
66
|
64
|
64
|
65
|
45
|
42
|
70
|
68
|
54
|
56
|
53
|
46
|
43
|
43
|
38
|
|
|
2025/03
|
68
|
63
|
20
|
14
|
21
|
34
|
45
|
54
|
57
|
47
|
43
|
54
|
41
|
39
|
24
|
34
|
42
|
44
|
47
|
47
|
52
|
59
|
64
|
56
|
48
|
44
|
125
|
45
|
41
|
51
|
46
|
|
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