Air Quality
Excellent
No health implications.
34
PM2.5
46
PM10
36
O3
0.5
CO
5
SO2
20
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
13 Dec
58
Good
Sun
14 Dec
78
Good
Mon
15 Dec
90
Good
Tue
16 Dec
103
Light
Wed
17 Dec
65
Good
Thu
18 Dec
75
Good
Fri
19 Dec
21
Excellent
Air quality in the last 12 months (Chengyang)
|
2025/11
|
75
|
42
|
24
|
39
|
28
|
45
|
51
|
55
|
75
|
50
|
60
|
66
|
75
|
72
|
111
|
81
|
35
|
48
|
61
|
74
|
79
|
97
|
106
|
122
|
49
|
67
|
110
|
84
|
118
|
133
|
|
|
2025/10
|
54
|
22
|
12
|
19
|
9
|
12
|
29
|
22
|
31
|
18
|
22
|
18
|
29
|
40
|
16
|
39
|
52
|
26
|
27
|
22
|
25
|
30
|
38
|
44
|
73
|
91
|
43
|
52
|
33
|
22
|
33
|
|
2025/09
|
18
|
29
|
20
|
18
|
20
|
18
|
38
|
46
|
52
|
47
|
30
|
17
|
16
|
29
|
18
|
20
|
13
|
17
|
13
|
39
|
38
|
19
|
11
|
34
|
47
|
41
|
42
|
29
|
58
|
59
|
|
|
2025/08
|
12
|
16
|
13
|
21
|
17
|
15
|
23
|
21
|
10
|
17
|
24
|
14
|
15
|
22
|
19
|
28
|
39
|
36
|
31
|
31
|
26
|
33
|
42
|
27
|
35
|
22
|
20
|
26
|
33
|
20
|
15
|
|
2025/07
|
31
|
35
|
41
|
42
|
45
|
45
|
38
|
13
|
24
|
33
|
29
|
35
|
28
|
21
|
30
|
21
|
26
|
27
|
22
|
18
|
17
|
15
|
15
|
19
|
21
|
18
|
20
|
16
|
15
|
16
|
15
|
|
2025/06
|
37
|
23
|
34
|
29
|
40
|
46
|
41
|
28
|
18
|
19
|
17
|
20
|
11
|
10
|
24
|
39
|
42
|
41
|
15
|
16
|
44
|
39
|
44
|
31
|
39
|
53
|
30
|
35
|
14
|
17
|
|
|
2025/05
|
51
|
43
|
30
|
37
|
21
|
20
|
34
|
38
|
22
|
35
|
48
|
60
|
56
|
58
|
45
|
35
|
51
|
36
|
64
|
67
|
50
|
55
|
50
|
49
|
37
|
50
|
49
|
25
|
38
|
36
|
41
|
|
2025/04
|
68
|
39
|
42
|
41
|
48
|
55
|
85
|
73
|
56
|
62
|
50
|
109
|
57
|
55
|
55
|
72
|
117
|
65
|
50
|
56
|
32
|
41
|
55
|
68
|
56
|
65
|
52
|
54
|
62
|
72
|
|
|
2025/03
|
25
|
33
|
40
|
29
|
27
|
46
|
37
|
83
|
89
|
62
|
32
|
68
|
52
|
57
|
50
|
40
|
50
|
33
|
48
|
62
|
60
|
70
|
88
|
119
|
112
|
110
|
108
|
65
|
42
|
48
|
70
|
|
2025/02
|
48
|
64
|
55
|
31
|
36
|
52
|
51
|
31
|
44
|
52
|
34
|
70
|
77
|
72
|
99
|
87
|
45
|
30
|
39
|
47
|
49
|
30
|
49
|
51
|
74
|
95
|
90
|
89
|
|||
|
2025/01
|
101
|
78
|
70
|
64
|
154
|
97
|
49
|
42
|
34
|
44
|
70
|
85
|
90
|
96
|
38
|
68
|
70
|
89
|
127
|
72
|
97
|
89
|
38
|
33
|
80
|
71
|
56
|
41
|
75
|
53
|
48
|
|
2024/12
|
71
|
70
|
41
|
72
|
116
|
87
|
46
|
49
|
73
|
117
|
48
|
60
|
70
|
54
|
64
|
64
|
86
|
34
|
54
|
78
|
54
|
51
|
76
|
67
|
107
|
58
|
55
|
66
|
72
|
81
|
67
|
|
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