Air Quality
Excellent
No health implications.
6
PM2.5
23
PM10
28
O3
0.7
CO
5
SO2
35
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
1 Jul
50
Excellent
Wed
2 Jul
57
Good
Thu
3 Jul
65
Good
Fri
4 Jul
77
Good
Sat
5 Jul
63
Good
Sun
6 Jul
37
Excellent
Mon
7 Jul
35
Excellent
Chengkou Air quality rank
Air quality in the last 12 months (Chengkou)
|
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
|
|
2025/02
|
48
|
35
|
38
|
42
|
47
|
33
|
45
|
55
|
57
|
56
|
67
|
63
|
57
|
52
|
47
|
44
|
51
|
46
|
65
|
79
|
78
|
51
|
40
|
71
|
70
|
57
|
53
|
62
|
|||
|
2025/01
|
110
|
113
|
129
|
153
|
84
|
78
|
84
|
63
|
58
|
65
|
70
|
63
|
67
|
85
|
59
|
60
|
77
|
87
|
89
|
93
|
104
|
147
|
191
|
76
|
17
|
43
|
61
|
65
|
128
|
96
|
90
|
|
2024/12
|
66
|
76
|
89
|
62
|
42
|
41
|
46
|
53
|
63
|
62
|
51
|
57
|
50
|
51
|
65
|
79
|
90
|
88
|
77
|
108
|
125
|
97
|
64
|
89
|
111
|
127
|
112
|
69
|
89
|
116
|
114
|
|
2024/11
|
47
|
38
|
40
|
40
|
31
|
39
|
50
|
63
|
49
|
40
|
52
|
50
|
38
|
30
|
36
|
27
|
10
|
12
|
17
|
21
|
27
|
33
|
43
|
42
|
20
|
41
|
46
|
48
|
54
|
58
|
|
|
2024/10
|
24
|
31
|
41
|
45
|
48
|
42
|
36
|
36
|
43
|
43
|
42
|
34
|
35
|
40
|
39
|
49
|
38
|
22
|
24
|
15
|
17
|
27
|
31
|
46
|
46
|
47
|
44
|
40
|
45
|
60
|
52
|
|
2024/09
|
35
|
38
|
27
|
31
|
39
|
35
|
42
|
41
|
42
|
29
|
44
|
31
|
28
|
32
|
26
|
21
|
22
|
26
|
33
|
29
|
14
|
22
|
31
|
37
|
46
|
67
|
59
|
80
|
60
|
16
|
|
|
2024/08
|
25
|
26
|
20
|
12
|
15
|
20
|
19
|
24
|
24
|
27
|
61
|
48
|
32
|
26
|
28
|
43
|
34
|
23
|
30
|
27
|
31
|
37
|
39
|
40
|
28
|
31
|
25
|
22
|
24
|
32
|
36
|
|
2024/07
|
20
|
21
|
25
|
19
|
15
|
15
|
24
|
16
|
14
|
28
|
14
|
13
|
20
|
10
|
16
|
22
|
23
|
20
|
21
|
20
|
23
|
22
|
27
|
28
|
41
|
34
|
29
|
31
|
19
|
10
|
15
|
|
2024/06
|
43
|
48
|
37
|
21
|
18
|
22
|
27
|
24
|
26
|
31
|
29
|
30
|
34
|
32
|
33
|
24
|
19
|
21
|
20
|
17
|
11
|
17
|
26
|
36
|
24
|
30
|
31
|
33
|
26
|
34
|
|
|
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