Air Quality
Excellent
No health implications.
17
PM2.5
35
PM10
91
O3
0.5
CO
5
SO2
11
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
28 May
102
Light
Thu
29 May
97
Good
Fri
30 May
104
Light
Sat
31 May
119
Light
Sun
1 Jun
57
Good
Mon
2 Jun
39
Excellent
Tue
3 Jun
23
Excellent
Air quality in the last 12 months (Changyi)
|
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
|
|
2024/06
|
25
|
32
|
26
|
38
|
43
|
33
|
33
|
20
|
19
|
22
|
29
|
37
|
31
|
19
|
17
|
20
|
22
|
27
|
39
|
33
|
37
|
57
|
43
|
12
|
13
|
29
|
40
|
45
|
31
|
49
|
|
|
2024/05
|
29
|
54
|
62
|
55
|
44
|
43
|
41
|
32
|
41
|
48
|
67
|
39
|
34
|
46
|
28
|
29
|
33
|
49
|
29
|
40
|
20
|
45
|
32
|
25
|
26
|
17
|
11
|
21
|
29
|
25
|
19
|
|
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