Air Quality
Excellent
No health implications.
15
PM2.5
23
PM10
30
O3
0.4
CO
6
SO2
11
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
7 Jun
42
Excellent
Sun
8 Jun
47
Excellent
Mon
9 Jun
47
Excellent
Tue
10 Jun
59
Good
Wed
11 Jun
66
Good
Thu
12 Jun
78
Good
Fri
13 Jun
37
Excellent
Air quality in the last 12 months (Chengkou)
|
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
|
|
|
2024/05
|
19
|
22
|
21
|
15
|
27
|
41
|
45
|
38
|
31
|
30
|
33
|
54
|
57
|
55
|
51
|
45
|
52
|
64
|
24
|
19
|
32
|
37
|
36
|
38
|
41
|
19
|
23
|
39
|
24
|
23
|
35
|
|
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