Air Quality
Excellent
No health implications.
11
PM2.5
27
PM10
12
O3
0.6
CO
7
SO2
13
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
28 Jun
60
Good
Mon
29 Jun
50
Excellent
Tue
30 Jun
56
Good
Wed
1 Jul
49
Excellent
Thu
2 Jul
53
Good
Fri
3 Jul
18
Excellent
Sat
4 Jul
32
Excellent
Air quality in the last 12 months (Chengkou)
|
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
|
|
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
|
|
|
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