Air Quality
Excellent
No health implications.
6
PM2.5
17
PM10
111
O3
0.3
CO
3
SO2
10
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
13 Jul
104
Light
Mon
14 Jul
97
Good
Tue
15 Jul
89
Good
Wed
16 Jul
85
Good
Thu
17 Jul
106
Light
Fri
18 Jul
108
Light
Sat
19 Jul
20
Excellent
Air quality in the last 12 months (Changyi)
|
2025/06
|
47
|
34
|
42
|
33
|
52
|
59
|
59
|
47
|
53
|
22
|
30
|
36
|
24
|
19
|
26
|
35
|
39
|
49
|
21
|
17
|
35
|
50
|
45
|
39
|
53
|
64
|
51
|
49
|
20
|
24
|
|
|
2025/05
|
66
|
53
|
40
|
43
|
31
|
44
|
53
|
48
|
27
|
38
|
51
|
63
|
60
|
63
|
39
|
61
|
63
|
47
|
76
|
76
|
62
|
61
|
40
|
53
|
42
|
56
|
49
|
50
|
49
|
52
|
57
|
|
2025/04
|
70
|
37
|
34
|
54
|
53
|
60
|
95
|
95
|
51
|
54
|
67
|
108
|
60
|
57
|
52
|
71
|
112
|
63
|
36
|
49
|
47
|
52
|
46
|
71
|
62
|
69
|
58
|
59
|
63
|
84
|
|
|
2025/03
|
49
|
46
|
48
|
46
|
37
|
66
|
48
|
108
|
113
|
98
|
68
|
104
|
51
|
58
|
58
|
45
|
49
|
34
|
48
|
57
|
57
|
66
|
89
|
112
|
106
|
108
|
105
|
54
|
41
|
58
|
69
|
|
2025/02
|
49
|
88
|
52
|
32
|
38
|
57
|
54
|
30
|
42
|
72
|
60
|
102
|
75
|
78
|
94
|
73
|
42
|
42
|
50
|
54
|
50
|
41
|
58
|
47
|
72
|
82
|
126
|
140
|
|||
|
2025/01
|
112
|
69
|
67
|
112
|
172
|
77
|
42
|
40
|
36
|
46
|
67
|
96
|
97
|
99
|
38
|
57
|
54
|
108
|
122
|
62
|
125
|
71
|
64
|
58
|
69
|
72
|
43
|
47
|
120
|
84
|
95
|
|
2024/12
|
88
|
60
|
37
|
76
|
104
|
74
|
43
|
52
|
80
|
128
|
35
|
53
|
72
|
54
|
57
|
75
|
80
|
32
|
48
|
82
|
55
|
50
|
78
|
81
|
127
|
51
|
59
|
63
|
66
|
85
|
54
|
|
2024/11
|
76
|
79
|
75
|
44
|
42
|
56
|
53
|
43
|
50
|
58
|
109
|
129
|
110
|
44
|
69
|
79
|
34
|
28
|
44
|
74
|
85
|
42
|
38
|
62
|
41
|
30
|
33
|
46
|
48
|
59
|
|
|
2024/10
|
24
|
23
|
45
|
50
|
50
|
40
|
37
|
47
|
56
|
100
|
61
|
76
|
70
|
38
|
64
|
49
|
40
|
15
|
38
|
31
|
43
|
45
|
39
|
67
|
87
|
66
|
70
|
54
|
75
|
92
|
108
|
|
2024/09
|
47
|
23
|
28
|
40
|
34
|
20
|
27
|
45
|
30
|
38
|
32
|
25
|
32
|
34
|
20
|
28
|
35
|
28
|
21
|
27
|
25
|
27
|
31
|
41
|
55
|
53
|
38
|
50
|
41
|
27
|
|
|
2024/08
|
26
|
27
|
31
|
34
|
12
|
17
|
34
|
21
|
24
|
34
|
69
|
52
|
44
|
35
|
33
|
31
|
40
|
29
|
18
|
11
|
24
|
42
|
58
|
44
|
49
|
25
|
16
|
27
|
37
|
51
|
65
|
|
2024/07
|
48
|
30
|
44
|
31
|
31
|
15
|
31
|
28
|
54
|
58
|
62
|
91
|
69
|
42
|
29
|
22
|
24
|
42
|
39
|
16
|
35
|
25
|
18
|
35
|
23
|
21
|
16
|
19
|
28
|
34
|
36
|
|
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