Air Quality
Excellent
No health implications.
21
PM2.5
40
PM10
30
O3
0.7
CO
5
SO2
25
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
9 Mar
57
Good
Tue
10 Mar
57
Good
Wed
11 Mar
63
Good
Thu
12 Mar
51
Good
Fri
13 Mar
54
Good
Sat
14 Mar
53
Good
Sun
15 Mar
39
Excellent
Air quality in the last 12 months (Cheng County)
|
2026/02
|
86
|
80
|
72
|
66
|
65
|
66
|
63
|
57
|
46
|
80
|
72
|
69
|
73
|
68
|
66
|
43
|
72
|
56
|
53
|
53
|
67
|
109
|
111
|
79
|
55
|
69
|
54
|
23
|
|||
|
2026/01
|
57
|
60
|
57
|
63
|
56
|
58
|
64
|
61
|
66
|
66
|
66
|
86
|
80
|
82
|
77
|
71
|
68
|
83
|
55
|
51
|
50
|
52
|
64
|
67
|
236
|
269
|
143
|
119
|
72
|
66
|
82
|
|
2025/12
|
64
|
62
|
57
|
62
|
61
|
70
|
70
|
62
|
78
|
74
|
71
|
59
|
81
|
70
|
69
|
75
|
68
|
70
|
72
|
50
|
47
|
49
|
58
|
57
|
56
|
58
|
69
|
80
|
82
|
82
|
63
|
|
2025/11
|
52
|
47
|
40
|
32
|
34
|
33
|
54
|
65
|
56
|
55
|
52
|
51
|
56
|
60
|
52
|
50
|
52
|
45
|
50
|
59
|
58
|
61
|
61
|
63
|
62
|
81
|
107
|
77
|
74
|
63
|
|
|
2025/10
|
23
|
22
|
21
|
20
|
27
|
19
|
17
|
22
|
20
|
18
|
19
|
21
|
27
|
28
|
25
|
25
|
20
|
26
|
25
|
21
|
19
|
21
|
24
|
22
|
29
|
39
|
41
|
38
|
45
|
44
|
53
|
|
2025/09
|
28
|
38
|
51
|
39
|
37
|
62
|
56
|
33
|
32
|
29
|
21
|
24
|
26
|
30
|
26
|
25
|
25
|
16
|
19
|
20
|
18
|
21
|
21
|
31
|
33
|
38
|
24
|
24
|
33
|
38
|
|
|
2025/08
|
33
|
31
|
37
|
35
|
29
|
27
|
28
|
28
|
24
|
22
|
30
|
37
|
31
|
32
|
30
|
26
|
21
|
24
|
26
|
26
|
30
|
27
|
19
|
22
|
21
|
29
|
24
|
15
|
17
|
20
|
24
|
|
2025/07
|
24
|
24
|
20
|
22
|
24
|
27
|
22
|
25
|
24
|
26
|
24
|
28
|
30
|
28
|
35
|
39
|
38
|
29
|
39
|
30
|
26
|
29
|
24
|
20
|
19
|
26
|
30
|
24
|
33
|
25
|
29
|
|
2025/06
|
33
|
37
|
40
|
34
|
36
|
39
|
33
|
34
|
32
|
34
|
38
|
39
|
35
|
46
|
60
|
48
|
44
|
32
|
41
|
45
|
34
|
26
|
27
|
27
|
24
|
25
|
23
|
32
|
34
|
20
|
|
|
2025/05
|
61
|
49
|
80
|
73
|
37
|
70
|
39
|
45
|
86
|
43
|
51
|
56
|
42
|
60
|
53
|
52
|
70
|
62
|
65
|
59
|
56
|
90
|
63
|
42
|
37
|
44
|
30
|
29
|
32
|
45
|
52
|
|
2025/04
|
81
|
84
|
75
|
76
|
88
|
59
|
44
|
72
|
73
|
67
|
93
|
480
|
155
|
82
|
63
|
70
|
67
|
141
|
127
|
61
|
74
|
98
|
65
|
53
|
50
|
40
|
40
|
51
|
51
|
58
|
|
|
2025/03
|
61
|
51
|
37
|
30
|
34
|
43
|
47
|
57
|
38
|
34
|
110
|
117
|
77
|
32
|
53
|
50
|
52
|
46
|
47
|
52
|
47
|
48
|
55
|
47
|
44
|
149
|
189
|
94
|
89
|
68
|
65
|
|
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