Air Quality
Excellent
No health implications.
8
PM2.5
12
PM10
41
O3
0.5
CO
6
SO2
9
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
16 Nov
60
Good
Mon
17 Nov
55
Good
Tue
18 Nov
98
Good
Wed
19 Nov
109
Light
Thu
20 Nov
56
Good
Fri
21 Nov
62
Good
Sat
22 Nov
19
Excellent
Changyi Air quality rank
Air quality in the last 12 months (Changyi)
|
2025/10
|
36
|
49
|
34
|
30
|
21
|
21
|
24
|
31
|
39
|
38
|
19
|
40
|
127
|
255
|
70
|
58
|
75
|
31
|
23
|
24
|
33
|
42
|
62
|
67
|
69
|
39
|
32
|
78
|
150
|
45
|
38
|
|
2025/09
|
21
|
31
|
26
|
30
|
31
|
22
|
24
|
24
|
26
|
24
|
22
|
40
|
48
|
34
|
17
|
25
|
23
|
22
|
21
|
27
|
27
|
20
|
27
|
21
|
27
|
24
|
23
|
24
|
30
|
32
|
|
|
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
|
|
|
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