Air Quality
Excellent
No health implications.
16
PM2.5
34
PM10
65
O3
0.7
CO
3
SO2
11
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
10 Sep
85
Good
Thu
11 Sep
90
Good
Fri
12 Sep
81
Good
Sat
13 Sep
90
Good
Sun
14 Sep
86
Good
Mon
15 Sep
16
Excellent
Tue
16 Sep
46
Excellent
Air quality in the last 12 months (Changli)
|
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
|
|
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
|
|
|
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