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
29 Sep
Tue
30 Sep
Wed
1 Oct
Thu
2 Oct
Fri
3 Oct
Sat
4 Oct
Sun
5 Oct
Real-time AQI (Monitoring Station in Chengde)
铁路
4619
PM2.5
46
PM10
6
O3
0.6
CO
2
SO2
41
NO2
中国银行
4317
PM2.5
43
PM10
5
O3
0.7
CO
2
SO2
30
NO2
开发区
4723
PM2.5
47
PM10
21
O3
0.6
CO
1
SO2
28
NO2
滨河大街98号
268
PM2.5
26
PM10
12
O3
0.4
CO
1
SO2
27
NO2
Air quality in the last 12 months (Chengde)
|
2025/08
|
41
|
51
|
39
|
28
|
25
|
27
|
26
|
27
|
23
|
24
|
32
|
29
|
24
|
28
|
39
|
29
|
31
|
34
|
35
|
24
|
23
|
26
|
29
|
22
|
25
|
23
|
23
|
20
|
36
|
37
|
38
|
|
2025/07
|
36
|
36
|
29
|
26
|
31
|
21
|
28
|
33
|
40
|
52
|
47
|
51
|
31
|
28
|
27
|
20
|
24
|
25
|
36
|
28
|
25
|
34
|
40
|
22
|
26
|
39
|
23
|
19
|
22
|
27
|
33
|
|
2025/06
|
42
|
40
|
28
|
27
|
30
|
27
|
27
|
35
|
44
|
25
|
40
|
56
|
41
|
48
|
22
|
21
|
33
|
49
|
39
|
29
|
25
|
31
|
39
|
50
|
60
|
52
|
53
|
32
|
46
|
33
|
|
|
2025/05
|
28
|
31
|
24
|
31
|
39
|
22
|
48
|
71
|
24
|
35
|
43
|
48
|
60
|
28
|
38
|
62
|
37
|
24
|
33
|
61
|
58
|
59
|
40
|
30
|
42
|
50
|
35
|
36
|
59
|
63
|
56
|
|
2025/04
|
42
|
25
|
38
|
56
|
24
|
41
|
61
|
38
|
37
|
46
|
71
|
98
|
47
|
32
|
47
|
62
|
54
|
28
|
21
|
43
|
51
|
41
|
61
|
34
|
32
|
60
|
30
|
34
|
50
|
40
|
|
|
2025/03
|
97
|
43
|
44
|
55
|
51
|
31
|
50
|
79
|
85
|
107
|
133
|
46
|
56
|
62
|
43
|
30
|
30
|
27
|
30
|
34
|
34
|
43
|
85
|
62
|
39
|
94
|
45
|
36
|
40
|
36
|
44
|
|
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
|
|
|
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