Air Quality
Excellent
No health implications.
15
PM2.5
28
PM10
72
O3
0.3
CO
3
SO2
7
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
23 Jul
83
Good
Thu
24 Jul
85
Good
Fri
25 Jul
85
Good
Sat
26 Jul
108
Light
Sun
27 Jul
106
Light
Mon
28 Jul
109
Light
Tue
29 Jul
50
Excellent
Air quality in the last 12 months (Changli)
|
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
|
|
|
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
|
|
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