Air Quality
Excellent
No health implications.
27
PM2.5
36
PM10
63
O3
0.3
CO
6
SO2
12
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
16 Dec
83
Good
Wed
17 Dec
101
Light
Thu
18 Dec
136
Light
Fri
19 Dec
151
Moderate
Sat
20 Dec
83
Good
Sun
21 Dec
63
Good
Mon
22 Dec
32
Excellent
Air quality in the last 12 months (Changli)
|
2025/11
|
51
|
19
|
33
|
82
|
126
|
85
|
44
|
53
|
49
|
44
|
45
|
105
|
29
|
64
|
151
|
65
|
22
|
27
|
50
|
33
|
44
|
91
|
116
|
81
|
25
|
68
|
39
|
66
|
109
|
63
|
|
|
2025/10
|
81
|
67
|
47
|
61
|
50
|
28
|
50
|
33
|
16
|
19
|
25
|
39
|
47
|
57
|
71
|
42
|
41
|
19
|
19
|
21
|
31
|
37
|
40
|
54
|
109
|
60
|
30
|
50
|
116
|
81
|
45
|
|
2025/09
|
49
|
56
|
58
|
53
|
42
|
44
|
57
|
44
|
59
|
41
|
54
|
50
|
52
|
53
|
44
|
47
|
25
|
33
|
53
|
49
|
52
|
40
|
38
|
61
|
75
|
69
|
73
|
62
|
59
|
78
|
|
|
2025/08
|
36
|
28
|
27
|
23
|
21
|
38
|
36
|
29
|
25
|
37
|
44
|
47
|
36
|
51
|
41
|
32
|
33
|
40
|
30
|
21
|
24
|
27
|
42
|
25
|
24
|
41
|
36
|
26
|
45
|
48
|
38
|
|
2025/07
|
34
|
37
|
19
|
45
|
45
|
25
|
38
|
39
|
37
|
39
|
41
|
35
|
30
|
33
|
34
|
29
|
34
|
29
|
26
|
30
|
41
|
35
|
27
|
28
|
37
|
39
|
33
|
30
|
20
|
25
|
33
|
|
2025/06
|
58
|
61
|
30
|
28
|
50
|
58
|
39
|
41
|
51
|
42
|
51
|
46
|
38
|
28
|
20
|
31
|
42
|
51
|
38
|
39
|
40
|
60
|
65
|
59
|
44
|
51
|
42
|
31
|
68
|
51
|
|
|
2025/05
|
48
|
48
|
37
|
56
|
51
|
38
|
56
|
67
|
38
|
34
|
68
|
80
|
73
|
59
|
52
|
54
|
49
|
46
|
79
|
79
|
63
|
71
|
52
|
42
|
50
|
64
|
80
|
66
|
59
|
74
|
67
|
|
2025/04
|
72
|
29
|
53
|
67
|
36
|
60
|
75
|
55
|
47
|
71
|
72
|
101
|
46
|
30
|
59
|
71
|
77
|
43
|
41
|
60
|
60
|
48
|
71
|
50
|
54
|
78
|
57
|
54
|
68
|
90
|
|
|
2025/03
|
124
|
64
|
33
|
54
|
74
|
48
|
49
|
87
|
154
|
107
|
123
|
73
|
66
|
54
|
36
|
31
|
43
|
31
|
56
|
48
|
45
|
58
|
93
|
104
|
78
|
98
|
84
|
38
|
40
|
50
|
74
|
|
2025/02
|
59
|
85
|
32
|
23
|
26
|
51
|
24
|
25
|
40
|
73
|
101
|
53
|
76
|
87
|
111
|
49
|
29
|
43
|
47
|
42
|
39
|
40
|
32
|
59
|
68
|
72
|
131
|
191
|
|||
|
2025/01
|
56
|
33
|
41
|
86
|
93
|
38
|
23
|
20
|
21
|
35
|
49
|
51
|
61
|
39
|
32
|
51
|
67
|
89
|
66
|
68
|
63
|
51
|
61
|
84
|
100
|
102
|
26
|
50
|
80
|
40
|
37
|
|
2024/12
|
82
|
31
|
48
|
28
|
41
|
30
|
30
|
31
|
55
|
51
|
33
|
72
|
50
|
29
|
44
|
47
|
30
|
35
|
55
|
59
|
35
|
41
|
44
|
65
|
101
|
31
|
27
|
37
|
72
|
82
|
44
|
|
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