Air Quality
Good
Some pollutants may slightly affect very few hypersensitive individuals.
11
PM2.5
51
*
PM10
72
O3
0.3
CO
6
SO2
11
NO2
Some pollutants may slightly affect very few hypersensitive individuals.
Advise
Only very few hypersensitive people should reduce outdoor activities.
Air Quality
Today
5 Feb
62
Good
Fri
6 Feb
51
Good
Sat
7 Feb
53
Good
Sun
8 Feb
52
Good
Mon
9 Feb
88
Good
Tue
10 Feb
107
Light
Wed
11 Feb
21
Excellent
Air quality in the last 12 months (Changli)
|
2025/12
|
31
|
24
|
25
|
37
|
42
|
103
|
68
|
28
|
53
|
80
|
39
|
33
|
59
|
46
|
102
|
68
|
68
|
111
|
137
|
28
|
28
|
54
|
62
|
33
|
27
|
47
|
77
|
156
|
74
|
45
|
30
|
|
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
|
|
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