Air Quality
Excellent
No health implications.
9
PM2.5
14
PM10
56
O3
0.4
CO
2
SO2
9
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
9 Jan
64
Good
Fri
10 Jan
79
Good
Sat
11 Jan
79
Good
Sun
12 Jan
96
Good
Mon
13 Jan
99
Good
Tue
14 Jan
84
Good
Wed
15 Jan
99
Good
Air quality in the last 12 months (Changli)
|
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
|
|
2024/11
|
93
|
49
|
78
|
30
|
47
|
41
|
65
|
76
|
85
|
91
|
44
|
55
|
49
|
42
|
46
|
51
|
28
|
29
|
47
|
74
|
45
|
36
|
36
|
70
|
58
|
18
|
21
|
29
|
36
|
48
|
|
|
2024/10
|
18
|
19
|
37
|
56
|
70
|
60
|
27
|
39
|
57
|
44
|
60
|
65
|
62
|
70
|
68
|
30
|
53
|
37
|
23
|
23
|
42
|
37
|
47
|
111
|
106
|
82
|
59
|
63
|
86
|
53
|
88
|
|
2024/09
|
24
|
20
|
31
|
41
|
24
|
26
|
37
|
48
|
51
|
19
|
25
|
27
|
38
|
28
|
26
|
50
|
50
|
30
|
34
|
24
|
18
|
24
|
37
|
54
|
53
|
32
|
41
|
45
|
39
|
19
|
|
|
2024/08
|
38
|
42
|
52
|
28
|
30
|
44
|
40
|
49
|
39
|
35
|
63
|
47
|
24
|
24
|
32
|
47
|
51
|
34
|
19
|
14
|
26
|
37
|
25
|
26
|
41
|
21
|
28
|
33
|
47
|
56
|
37
|
|
2024/07
|
45
|
51
|
40
|
52
|
67
|
39
|
38
|
42
|
58
|
60
|
69
|
63
|
57
|
58
|
43
|
33
|
37
|
50
|
55
|
47
|
47
|
36
|
49
|
52
|
26
|
22
|
22
|
30
|
42
|
36
|
44
|
|
2024/06
|
53
|
53
|
54
|
51
|
49
|
55
|
50
|
47
|
61
|
59
|
67
|
55
|
47
|
36
|
24
|
47
|
61
|
62
|
50
|
35
|
35
|
64
|
113
|
37
|
43
|
59
|
59
|
46
|
33
|
44
|
|
|
2024/05
|
58
|
66
|
73
|
55
|
51
|
71
|
67
|
76
|
83
|
85
|
245
|
43
|
63
|
73
|
43
|
56
|
66
|
59
|
40
|
28
|
53
|
62
|
54
|
27
|
29
|
35
|
39
|
53
|
57
|
58
|
36
|
|
2024/04
|
65
|
61
|
49
|
50
|
67
|
91
|
98
|
108
|
59
|
79
|
117
|
88
|
47
|
36
|
119
|
63
|
70
|
84
|
62
|
73
|
64
|
58
|
26
|
35
|
81
|
78
|
62
|
47
|
34
|
45
|
|
|
2024/03
|
34
|
59
|
47
|
53
|
63
|
51
|
69
|
35
|
55
|
91
|
135
|
79
|
97
|
135
|
87
|
105
|
52
|
61
|
64
|
38
|
64
|
58
|
56
|
50
|
48
|
75
|
79
|
206
|
94
|
78
|
60
|
|
2024/02
|
30
|
53
|
55
|
58
|
52
|
43
|
74
|
87
|
171
|
159
|
99
|
144
|
146
|
84
|
28
|
56
|
59
|
57
|
41
|
37
|
42
|
29
|
31
|
48
|
75
|
60
|
57
|
77
|
52
|
||
|
2024/01
|
89
|
149
|
61
|
126
|
48
|
37
|
23
|
60
|
54
|
61
|
106
|
63
|
45
|
41
|
46
|
69
|
90
|
40
|
35
|
29
|
27
|
24
|
31
|
34
|
54
|
55
|
56
|
75
|
73
|
96
|
85
|
|
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