Air Quality
Excellent
No health implications.
23
PM2.5
39
PM10
36
O3
0.6
CO
5
SO2
28
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
27 Dec
49
Excellent
Sat
28 Dec
52
Good
Sun
29 Dec
67
Good
Mon
30 Dec
60
Good
Tue
31 Dec
66
Good
Wed
1 Jan
59
Good
Thu
2 Jan
52
Good
Air quality in the last 12 months (Changli)
|
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
|
|
2023/12
|
35
|
53
|
65
|
116
|
137
|
92
|
151
|
144
|
57
|
38
|
34
|
34
|
56
|
35
|
23
|
21
|
28
|
69
|
78
|
22
|
23
|
33
|
57
|
45
|
75
|
80
|
40
|
62
|
128
|
212
|
84
|
|
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