Air Quality
Excellent
No health implications.
10
PM2.5
32
PM10
65
O3
0.8
CO
3
SO2
17
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
19 Sep
83
Good
Fri
20 Sep
52
Good
Sat
21 Sep
60
Good
Sun
22 Sep
67
Good
Mon
23 Sep
72
Good
Tue
24 Sep
69
Good
Wed
25 Sep
69
Good
Air quality in the last 12 months (Changli)
|
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
|
|
2023/11
|
99
|
107
|
57
|
51
|
42
|
36
|
41
|
60
|
25
|
22
|
29
|
25
|
36
|
73
|
139
|
78
|
22
|
36
|
59
|
67
|
138
|
127
|
36
|
27
|
45
|
60
|
65
|
29
|
30
|
25
|
|
|
2023/10
|
35
|
54
|
54
|
45
|
39
|
51
|
57
|
49
|
33
|
39
|
57
|
66
|
52
|
26
|
44
|
32
|
53
|
65
|
33
|
24
|
38
|
75
|
103
|
105
|
177
|
46
|
50
|
59
|
102
|
114
|
118
|
|
2023/09
|
33
|
56
|
56
|
67
|
67
|
64
|
60
|
51
|
40
|
34
|
52
|
30
|
39
|
48
|
50
|
57
|
56
|
49
|
43
|
32
|
46
|
44
|
30
|
40
|
43
|
67
|
81
|
37
|
67
|
41
|
|
|
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