Air Quality
Excellent
No health implications.
15
PM2.5
21
PM10
14
O3
0.5
CO
5
SO2
19
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
17 Jul
38
Excellent
Fri
18 Jul
39
Excellent
Sat
19 Jul
56
Good
Sun
20 Jul
44
Excellent
Mon
21 Jul
44
Excellent
Tue
22 Jul
39
Excellent
Wed
23 Jul
37
Excellent
Air quality in the last 12 months (Changyi)
|
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
|
|
|
2024/08
|
17
|
23
|
28
|
20
|
14
|
26
|
38
|
38
|
30
|
28
|
18
|
27
|
18
|
32
|
44
|
44
|
43
|
42
|
22
|
21
|
13
|
17
|
19
|
35
|
27
|
18
|
25
|
21
|
21
|
27
|
20
|
|
2024/07
|
67
|
49
|
13
|
28
|
28
|
20
|
39
|
67
|
59
|
66
|
76
|
100
|
86
|
69
|
65
|
44
|
18
|
24
|
34
|
28
|
25
|
20
|
15
|
27
|
21
|
7
|
8
|
8
|
12
|
29
|
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