Air Quality
Excellent
No health implications.
21
PM2.5
39
PM10
7
O3
0.8
CO
3
SO2
29
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
3 May
33
Excellent
Sun
4 May
70
Good
Mon
5 May
65
Good
Tue
6 May
64
Good
Wed
7 May
74
Good
Thu
8 May
19
Excellent
Fri
9 May
24
Excellent
Air quality in the last 12 months (Chengde)
|
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
|
|
|
2024/05
|
34
|
50
|
56
|
61
|
73
|
57
|
48
|
53
|
73
|
126
|
170
|
26
|
36
|
53
|
21
|
39
|
57
|
63
|
47
|
24
|
41
|
59
|
64
|
21
|
22
|
22
|
28
|
39
|
57
|
40
|
16
|
|
2024/04
|
58
|
58
|
36
|
53
|
64
|
61
|
50
|
61
|
55
|
52
|
64
|
94
|
65
|
47
|
129
|
40
|
59
|
70
|
47
|
36
|
52
|
63
|
19
|
33
|
85
|
79
|
52
|
18
|
20
|
29
|
|
|
2024/03
|
29
|
45
|
36
|
57
|
68
|
50
|
50
|
26
|
53
|
85
|
84
|
45
|
51
|
58
|
86
|
123
|
35
|
83
|
44
|
29
|
66
|
57
|
60
|
53
|
53
|
68
|
93
|
238
|
89
|
56
|
50
|
|
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