Air Quality
Excellent
No health implications.
13
PM2.5
34
PM10
61
O3
0.5
CO
7
SO2
12
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
7 Sep
60
Good
Tue
8 Sep
49
Excellent
Wed
9 Sep
53
Good
Thu
10 Sep
50
Excellent
Fri
11 Sep
58
Good
Sat
12 Sep
54
Good
Sun
13 Sep
43
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