Air Quality
Excellent
No health implications.
PM2.5
PM10
O3
CO
SO2
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
19 Apr
Sun
20 Apr
Mon
21 Apr
Tue
22 Apr
Wed
23 Apr
Thu
24 Apr
Fri
25 Apr
Real-time AQI (Monitoring Station in Chengde)
铁路
213
PM2.5
12
PM10
65
O3
0.2
CO
12
SO2
11
NO2
中国银行
213
PM2.5
11
PM10
67
O3
0.2
CO
3
SO2
7
NO2
文化中心
223
PM2.5
13
PM10
70
O3
0.2
CO
5
SO2
7
NO2
Air quality in the last 12 months (Chengde)
|
2025/02
|
83
|
64
|
22
|
23
|
23
|
44
|
28
|
19
|
29
|
51
|
80
|
47
|
58
|
53
|
68
|
34
|
25
|
35
|
29
|
28
|
25
|
32
|
22
|
35
|
46
|
45
|
76
|
104
|
|||
|
2025/01
|
65
|
35
|
43
|
62
|
54
|
31
|
31
|
30
|
24
|
32
|
45
|
45
|
47
|
40
|
36
|
59
|
66
|
69
|
52
|
64
|
55
|
45
|
80
|
106
|
119
|
88
|
23
|
26
|
96
|
30
|
62
|
|
2024/12
|
56
|
28
|
40
|
44
|
34
|
36
|
25
|
40
|
50
|
57
|
51
|
72
|
37
|
37
|
46
|
44
|
31
|
34
|
56
|
52
|
30
|
35
|
55
|
69
|
72
|
32
|
28
|
45
|
63
|
61
|
51
|
|
2024/11
|
105
|
76
|
52
|
34
|
42
|
43
|
68
|
104
|
107
|
88
|
63
|
58
|
56
|
60
|
49
|
45
|
36
|
43
|
63
|
63
|
39
|
39
|
54
|
76
|
58
|
22
|
25
|
26
|
35
|
44
|
|
|
2024/10
|
23
|
25
|
30
|
42
|
64
|
47
|
25
|
30
|
51
|
31
|
38
|
59
|
84
|
91
|
37
|
46
|
63
|
46
|
24
|
31
|
46
|
30
|
35
|
48
|
68
|
117
|
43
|
38
|
52
|
47
|
80
|
|
2024/09
|
25
|
21
|
28
|
39
|
29
|
30
|
23
|
33
|
43
|
25
|
36
|
29
|
31
|
22
|
23
|
32
|
21
|
31
|
50
|
17
|
16
|
23
|
25
|
44
|
45
|
29
|
39
|
45
|
53
|
17
|
|
|
2024/08
|
22
|
31
|
28
|
19
|
28
|
29
|
42
|
46
|
41
|
43
|
42
|
18
|
22
|
29
|
28
|
35
|
44
|
30
|
22
|
12
|
19
|
30
|
27
|
32
|
32
|
22
|
31
|
41
|
39
|
41
|
33
|
|
2024/07
|
32
|
37
|
25
|
28
|
40
|
43
|
32
|
43
|
58
|
49
|
53
|
45
|
46
|
44
|
50
|
39
|
20
|
23
|
31
|
29
|
39
|
25
|
42
|
50
|
21
|
19
|
27
|
27
|
36
|
21
|
17
|
|
2024/06
|
30
|
30
|
31
|
44
|
49
|
52
|
44
|
32
|
35
|
46
|
37
|
39
|
49
|
25
|
21
|
33
|
46
|
54
|
61
|
46
|
57
|
93
|
123
|
21
|
32
|
45
|
60
|
52
|
59
|
35
|
|
|
2024/05
|
36
|
47
|
56
|
59
|
68
|
53
|
46
|
48
|
68
|
132
|
159
|
30
|
32
|
49
|
24
|
41
|
57
|
60
|
49
|
24
|
40
|
53
|
70
|
24
|
25
|
25
|
32
|
36
|
58
|
39
|
16
|
|
2024/04
|
55
|
61
|
30
|
53
|
62
|
54
|
46
|
48
|
51
|
49
|
54
|
88
|
67
|
51
|
132
|
41
|
56
|
65
|
46
|
32
|
49
|
62
|
23
|
35
|
82
|
79
|
50
|
20
|
18
|
28
|
|
|
2024/03
|
34
|
44
|
32
|
55
|
68
|
42
|
44
|
29
|
50
|
78
|
72
|
39
|
44
|
45
|
81
|
125
|
31
|
85
|
42
|
28
|
61
|
55
|
53
|
50
|
48
|
66
|
96
|
232
|
86
|
55
|
42
|
|
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
*: primary pollution