Air Quality
Excellent
No health implications.
14
PM2.5
40
PM10
33
O3
0.5
CO
6
SO2
36
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
15 Sep
51
Good
Tue
16 Sep
30
Excellent
Wed
17 Sep
37
Excellent
Thu
18 Sep
38
Excellent
Fri
19 Sep
43
Excellent
Sat
20 Sep
42
Excellent
Sun
21 Sep
17
Excellent
Air quality in the last 12 months (Changyi)
|
2025/08
|
43
|
34
|
20
|
19
|
21
|
20
|
19
|
19
|
24
|
18
|
26
|
25
|
23
|
21
|
29
|
21
|
16
|
23
|
34
|
26
|
20
|
19
|
27
|
17
|
17
|
25
|
20
|
21
|
23
|
29
|
29
|
|
2025/07
|
19
|
16
|
18
|
16
|
20
|
17
|
24
|
28
|
33
|
32
|
31
|
34
|
31
|
24
|
19
|
10
|
19
|
17
|
18
|
20
|
18
|
21
|
15
|
15
|
25
|
37
|
21
|
25
|
21
|
14
|
15
|
|
2025/06
|
34
|
40
|
18
|
28
|
25
|
30
|
27
|
26
|
38
|
20
|
26
|
20
|
29
|
33
|
31
|
19
|
37
|
27
|
31
|
29
|
14
|
20
|
27
|
37
|
40
|
38
|
53
|
28
|
36
|
34
|
|
|
2025/05
|
29
|
20
|
23
|
19
|
31
|
26
|
39
|
41
|
54
|
27
|
38
|
49
|
49
|
48
|
39
|
32
|
27
|
32
|
20
|
28
|
46
|
39
|
25
|
33
|
32
|
32
|
38
|
35
|
42
|
38
|
49
|
|
2025/04
|
66
|
54
|
58
|
49
|
35
|
56
|
44
|
66
|
67
|
85
|
76
|
44
|
15
|
26
|
34
|
34
|
54
|
49
|
30
|
57
|
119
|
34
|
29
|
76
|
37
|
51
|
60
|
57
|
63
|
57
|
|
|
2025/03
|
58
|
27
|
47
|
30
|
44
|
71
|
53
|
66
|
87
|
73
|
63
|
97
|
42
|
40
|
39
|
54
|
80
|
79
|
71
|
84
|
60
|
69
|
43
|
89
|
91
|
63
|
40
|
27
|
21
|
39
|
60
|
|
2025/02
|
110
|
136
|
73
|
42
|
58
|
57
|
45
|
31
|
36
|
53
|
60
|
62
|
63
|
53
|
66
|
42
|
27
|
31
|
35
|
39
|
42
|
43
|
44
|
30
|
83
|
63
|
75
|
104
|
|||
|
2025/01
|
34
|
32
|
30
|
56
|
95
|
98
|
64
|
69
|
60
|
60
|
90
|
98
|
62
|
53
|
32
|
44
|
40
|
53
|
71
|
142
|
95
|
129
|
97
|
98
|
140
|
72
|
42
|
76
|
80
|
40
|
65
|
|
2024/12
|
39
|
16
|
21
|
26
|
28
|
44
|
39
|
40
|
51
|
50
|
41
|
44
|
77
|
36
|
23
|
36
|
41
|
49
|
46
|
74
|
86
|
35
|
48
|
28
|
51
|
32
|
31
|
31
|
37
|
55
|
41
|
|
2024/11
|
82
|
83
|
65
|
41
|
23
|
37
|
42
|
54
|
55
|
44
|
106
|
49
|
38
|
32
|
32
|
29
|
47
|
45
|
34
|
53
|
51
|
49
|
73
|
44
|
47
|
50
|
23
|
57
|
28
|
38
|
|
|
2024/10
|
17
|
18
|
21
|
23
|
38
|
47
|
44
|
35
|
32
|
23
|
23
|
55
|
39
|
30
|
21
|
24
|
50
|
55
|
23
|
21
|
21
|
48
|
55
|
56
|
68
|
177
|
69
|
39
|
46
|
91
|
61
|
|
2024/09
|
17
|
16
|
16
|
24
|
17
|
15
|
19
|
22
|
28
|
16
|
20
|
22
|
23
|
23
|
24
|
24
|
29
|
29
|
26
|
22
|
21
|
33
|
23
|
22
|
28
|
29
|
33
|
30
|
28
|
18
|
|
|
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