Air Quality
Excellent
No health implications.
25
PM2.5
47
PM10
86
O3
0.7
CO
4
SO2
13
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
28 Jun
101
Light
Sun
29 Jun
76
Good
Mon
30 Jun
102
Light
Tue
1 Jul
72
Good
Wed
2 Jul
85
Good
Thu
3 Jul
72
Good
Fri
4 Jul
20
Excellent
Air quality in the last 12 months (Chengde)
|
2025/05
|
30
|
34
|
26
|
34
|
41
|
23
|
52
|
73
|
24
|
31
|
47
|
61
|
68
|
34
|
40
|
65
|
38
|
27
|
45
|
68
|
59
|
61
|
39
|
30
|
42
|
49
|
41
|
44
|
62
|
71
|
58
|
|
2025/04
|
44
|
20
|
41
|
59
|
23
|
46
|
62
|
36
|
41
|
54
|
75
|
101
|
45
|
28
|
49
|
64
|
60
|
35
|
24
|
48
|
57
|
44
|
63
|
37
|
34
|
67
|
36
|
41
|
55
|
49
|
|
|
2025/03
|
114
|
50
|
40
|
56
|
56
|
32
|
51
|
84
|
103
|
111
|
135
|
51
|
63
|
58
|
36
|
29
|
31
|
23
|
32
|
35
|
31
|
43
|
84
|
73
|
46
|
95
|
48
|
34
|
35
|
38
|
50
|
|
2025/02
|
80
|
67
|
19
|
19
|
20
|
45
|
25
|
16
|
28
|
56
|
87
|
50
|
58
|
58
|
72
|
35
|
20
|
32
|
30
|
28
|
22
|
31
|
22
|
39
|
50
|
47
|
87
|
122
|
|||
|
2025/01
|
62
|
32
|
42
|
66
|
61
|
31
|
29
|
25
|
24
|
32
|
46
|
47
|
51
|
40
|
31
|
56
|
70
|
84
|
56
|
68
|
58
|
46
|
74
|
104
|
121
|
82
|
20
|
30
|
113
|
37
|
62
|
|
2024/12
|
63
|
23
|
38
|
36
|
36
|
29
|
22
|
34
|
53
|
57
|
48
|
76
|
39
|
31
|
47
|
49
|
30
|
35
|
60
|
52
|
30
|
33
|
52
|
69
|
77
|
29
|
25
|
42
|
66
|
68
|
52
|
|
2024/11
|
100
|
66
|
56
|
30
|
39
|
39
|
74
|
103
|
107
|
93
|
63
|
57
|
54
|
56
|
45
|
43
|
32
|
41
|
62
|
65
|
41
|
38
|
53
|
80
|
57
|
18
|
22
|
26
|
33
|
44
|
|
|
2024/10
|
17
|
19
|
28
|
45
|
64
|
47
|
22
|
28
|
54
|
28
|
42
|
64
|
87
|
102
|
40
|
43
|
64
|
51
|
16
|
25
|
42
|
31
|
36
|
53
|
77
|
120
|
49
|
42
|
59
|
49
|
80
|
|
2024/09
|
23
|
17
|
24
|
42
|
26
|
28
|
23
|
33
|
48
|
22
|
27
|
25
|
27
|
22
|
21
|
36
|
26
|
34
|
51
|
16
|
13
|
18
|
28
|
46
|
47
|
25
|
39
|
49
|
53
|
14
|
|
|
2024/08
|
26
|
34
|
33
|
19
|
29
|
33
|
41
|
47
|
44
|
39
|
44
|
23
|
20
|
28
|
32
|
39
|
46
|
36
|
22
|
12
|
19
|
29
|
26
|
27
|
34
|
23
|
26
|
34
|
40
|
46
|
35
|
|
2024/07
|
32
|
39
|
24
|
32
|
47
|
44
|
33
|
44
|
57
|
50
|
60
|
50
|
48
|
46
|
51
|
39
|
20
|
26
|
32
|
27
|
43
|
24
|
46
|
50
|
20
|
19
|
29
|
27
|
39
|
24
|
18
|
|
2024/06
|
30
|
32
|
29
|
44
|
50
|
54
|
48
|
33
|
42
|
51
|
44
|
43
|
53
|
26
|
22
|
33
|
51
|
56
|
58
|
46
|
51
|
89
|
130
|
18
|
31
|
47
|
60
|
52
|
52
|
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