Air Quality
Excellent
No health implications.
15
PM2.5
24
PM10
97
O3
0.4
CO
6
SO2
6
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
16 Jul
50
Excellent
Fri
17 Jul
35
Excellent
Sat
18 Jul
44
Excellent
Sun
19 Jul
56
Good
Mon
20 Jul
63
Good
Tue
21 Jul
62
Good
Wed
22 Jul
28
Excellent
Air quality in the last 12 months (Chengkou)
|
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
|
|
|
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
|
|
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