Air Quality
Excellent
No health implications.
3
PM2.5
6
PM10
27
O3
0.4
CO
7
SO2
11
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
8 Sep
47
Excellent
Wed
9 Sep
50
Excellent
Thu
10 Sep
53
Good
Fri
11 Sep
58
Good
Sat
12 Sep
53
Good
Sun
13 Sep
68
Good
Mon
14 Sep
25
Excellent
Air quality in the last 12 months (Chengde)
|
2026/08
|
31
|
31
|
30
|
25
|
33
|
39
|
29
|
26
|
28
|
39
|
38
|
22
|
20
|
26
|
29
|
30
|
24
|
31
|
35
|
41
|
51
|
41
|
33
|
33
|
33
|
25
|
32
|
23
|
23
|
25
|
23
|
|
2026/07
|
37
|
46
|
51
|
53
|
32
|
30
|
27
|
27
|
39
|
29
|
20
|
23
|
34
|
32
|
36
|
32
|
37
|
36
|
35
|
43
|
39
|
34
|
40
|
41
|
33
|
30
|
35
|
40
|
32
|
27
|
30
|
|
2026/06
|
56
|
70
|
30
|
22
|
21
|
24
|
24
|
24
|
24
|
23
|
27
|
45
|
44
|
33
|
53
|
49
|
34
|
47
|
57
|
30
|
27
|
41
|
34
|
36
|
25
|
34
|
47
|
54
|
49
|
39
|
|
|
2026/05
|
46
|
39
|
24
|
31
|
50
|
45
|
30
|
31
|
52
|
49
|
37
|
54
|
71
|
76
|
62
|
55
|
32
|
26
|
32
|
27
|
29
|
36
|
35
|
58
|
51
|
35
|
39
|
35
|
29
|
44
|
60
|
|
2026/04
|
39
|
67
|
88
|
52
|
47
|
27
|
28
|
52
|
40
|
30
|
55
|
63
|
52
|
61
|
73
|
73
|
48
|
75
|
86
|
100
|
51
|
48
|
56
|
61
|
60
|
46
|
32
|
26
|
32
|
39
|
|
|
2026/03
|
58
|
74
|
75
|
55
|
59
|
37
|
54
|
67
|
29
|
64
|
57
|
65
|
91
|
36
|
56
|
62
|
81
|
36
|
43
|
49
|
74
|
104
|
99
|
108
|
115
|
73
|
42
|
55
|
64
|
32
|
39
|
|
2026/02
|
39
|
34
|
66
|
102
|
62
|
28
|
27
|
31
|
68
|
80
|
50
|
75
|
82
|
82
|
32
|
35
|
92
|
32
|
58
|
74
|
214
|
48
|
40
|
61
|
86
|
69
|
52
|
55
|
|||
|
2026/01
|
42
|
48
|
65
|
65
|
52
|
43
|
34
|
56
|
78
|
28
|
27
|
55
|
30
|
62
|
88
|
53
|
35
|
48
|
35
|
29
|
36
|
47
|
50
|
48
|
40
|
51
|
38
|
57
|
61
|
76
|
58
|
|
2025/12
|
27
|
25
|
25
|
35
|
46
|
77
|
57
|
31
|
56
|
74
|
52
|
43
|
33
|
47
|
74
|
70
|
66
|
97
|
129
|
30
|
36
|
68
|
59
|
35
|
28
|
55
|
72
|
97
|
71
|
38
|
29
|
|
2025/11
|
34
|
24
|
43
|
61
|
111
|
100
|
54
|
55
|
29
|
37
|
52
|
69
|
32
|
59
|
77
|
42
|
21
|
30
|
43
|
33
|
41
|
58
|
80
|
69
|
30
|
63
|
34
|
66
|
72
|
57
|
|
|
2025/10
|
46
|
48
|
39
|
46
|
35
|
20
|
36
|
25
|
14
|
18
|
30
|
33
|
40
|
47
|
56
|
37
|
26
|
17
|
20
|
24
|
34
|
39
|
51
|
74
|
81
|
32
|
31
|
62
|
129
|
97
|
53
|
|
2025/09
|
34
|
33
|
46
|
54
|
51
|
34
|
31
|
26
|
43
|
31
|
55
|
62
|
59
|
32
|
23
|
24
|
24
|
26
|
35
|
37
|
36
|
31
|
29
|
43
|
44
|
44
|
49
|
43
|
42
|
46
|
|
|
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