Air Quality
Excellent
No health implications.
17
PM2.5
48
PM10
144
O3
0.2
CO
4
SO2
9
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
2 Apr
101
Light
Fri
3 Apr
95
Good
Sat
4 Apr
65
Good
Sun
5 Apr
96
Good
Mon
6 Apr
85
Good
Tue
7 Apr
66
Good
Wed
8 Apr
41
Excellent
Changyi Air quality rank
Air quality in the last 12 months (Changyi)
|
2026/02
|
200
|
152
|
97
|
140
|
154
|
36
|
42
|
54
|
66
|
68
|
133
|
111
|
109
|
120
|
70
|
64
|
212
|
76
|
78
|
75
|
84
|
106
|
59
|
52
|
69
|
62
|
81
|
84
|
|||
|
2026/01
|
38
|
41
|
90
|
196
|
101
|
135
|
67
|
50
|
84
|
81
|
39
|
71
|
74
|
86
|
159
|
117
|
40
|
32
|
31
|
34
|
41
|
55
|
98
|
147
|
77
|
76
|
94
|
123
|
105
|
49
|
122
|
|
2025/12
|
60
|
31
|
47
|
52
|
46
|
105
|
108
|
49
|
91
|
87
|
58
|
27
|
50
|
65
|
77
|
104
|
62
|
68
|
124
|
84
|
34
|
47
|
53
|
72
|
32
|
38
|
65
|
110
|
127
|
58
|
32
|
|
2025/11
|
86
|
39
|
31
|
56
|
63
|
50
|
82
|
86
|
86
|
60
|
75
|
82
|
75
|
73
|
149
|
104
|
37
|
50
|
56
|
61
|
63
|
100
|
121
|
138
|
43
|
80
|
111
|
105
|
133
|
158
|
|
|
2025/10
|
53
|
22
|
14
|
31
|
8
|
11
|
36
|
36
|
25
|
12
|
21
|
21
|
29
|
54
|
25
|
42
|
42
|
22
|
26
|
27
|
32
|
33
|
40
|
45
|
67
|
75
|
44
|
68
|
51
|
39
|
47
|
|
2025/09
|
28
|
38
|
33
|
32
|
31
|
34
|
49
|
63
|
54
|
51
|
37
|
27
|
34
|
48
|
47
|
30
|
17
|
22
|
14
|
35
|
44
|
39
|
42
|
36
|
51
|
59
|
45
|
38
|
72
|
76
|
|
|
2025/08
|
12
|
22
|
16
|
23
|
30
|
22
|
27
|
29
|
8
|
17
|
28
|
31
|
31
|
33
|
24
|
25
|
14
|
34
|
37
|
37
|
36
|
34
|
31
|
27
|
44
|
22
|
27
|
23
|
18
|
16
|
15
|
|
2025/07
|
33
|
30
|
33
|
31
|
35
|
35
|
42
|
20
|
25
|
35
|
41
|
33
|
40
|
25
|
25
|
22
|
26
|
28
|
32
|
24
|
16
|
15
|
15
|
18
|
24
|
23
|
23
|
20
|
20
|
23
|
22
|
|
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
|
|
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