Air Quality
Excellent
No health implications.
11
PM2.5
22
PM10
15
O3
0.5
CO
4
SO2
4
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
10 Sep
34
Excellent
Thu
11 Sep
35
Excellent
Fri
12 Sep
40
Excellent
Sat
13 Sep
36
Excellent
Sun
14 Sep
45
Excellent
Mon
15 Sep
29
Excellent
Tue
16 Sep
26
Excellent
Air quality in the last 12 months (Yi County)
|
2025/08
|
23
|
27
|
26
|
25
|
21
|
14
|
16
|
20
|
23
|
32
|
32
|
23
|
19
|
17
|
16
|
18
|
21
|
25
|
24
|
21
|
19
|
17
|
21
|
27
|
28
|
17
|
23
|
21
|
25
|
28
|
21
|
|
2025/07
|
18
|
20
|
22
|
25
|
28
|
26
|
21
|
16
|
14
|
21
|
20
|
15
|
15
|
24
|
24
|
25
|
26
|
27
|
18
|
9
|
10
|
8
|
11
|
14
|
19
|
17
|
14
|
17
|
15
|
16
|
12
|
|
2025/06
|
9
|
11
|
17
|
26
|
29
|
28
|
27
|
14
|
13
|
17
|
12
|
17
|
21
|
13
|
11
|
26
|
31
|
15
|
14
|
16
|
13
|
8
|
11
|
18
|
21
|
20
|
19
|
14
|
16
|
20
|
|
|
2025/05
|
42
|
46
|
50
|
51
|
22
|
84
|
116
|
39
|
15
|
35
|
33
|
37
|
35
|
40
|
50
|
26
|
20
|
57
|
30
|
19
|
15
|
22
|
16
|
59
|
52
|
48
|
47
|
41
|
20
|
24
|
28
|
|
2025/04
|
28
|
41
|
60
|
52
|
58
|
52
|
50
|
51
|
56
|
51
|
44
|
133
|
108
|
99
|
44
|
40
|
54
|
56
|
56
|
58
|
37
|
21
|
40
|
33
|
34
|
38
|
21
|
37
|
50
|
46
|
|
|
2025/03
|
36
|
38
|
14
|
22
|
35
|
51
|
49
|
48
|
62
|
52
|
45
|
36
|
21
|
30
|
13
|
46
|
30
|
38
|
39
|
36
|
41
|
45
|
53
|
55
|
54
|
61
|
50
|
60
|
44
|
60
|
38
|
|
2025/02
|
24
|
21
|
66
|
46
|
39
|
45
|
70
|
38
|
32
|
38
|
54
|
72
|
95
|
84
|
59
|
46
|
54
|
34
|
34
|
22
|
17
|
21
|
45
|
66
|
59
|
44
|
38
|
32
|
|||
|
2025/01
|
74
|
65
|
90
|
74
|
74
|
59
|
62
|
52
|
53
|
34
|
41
|
62
|
58
|
57
|
78
|
40
|
45
|
45
|
50
|
62
|
61
|
62
|
85
|
77
|
42
|
29
|
42
|
67
|
143
|
70
|
45
|
|
2024/12
|
43
|
48
|
70
|
71
|
36
|
41
|
69
|
65
|
47
|
47
|
23
|
59
|
73
|
69
|
52
|
42
|
49
|
65
|
47
|
45
|
66
|
67
|
62
|
68
|
77
|
88
|
96
|
81
|
52
|
62
|
73
|
|
2024/11
|
13
|
29
|
29
|
40
|
54
|
36
|
33
|
34
|
34
|
33
|
28
|
31
|
35
|
33
|
22
|
24
|
16
|
23
|
32
|
33
|
32
|
36
|
53
|
41
|
26
|
32
|
35
|
44
|
37
|
42
|
|
|
2024/10
|
24
|
33
|
27
|
30
|
32
|
18
|
9
|
24
|
34
|
41
|
50
|
53
|
51
|
47
|
26
|
15
|
18
|
29
|
16
|
26
|
29
|
27
|
38
|
35
|
36
|
26
|
11
|
34
|
41
|
31
|
24
|
|
2024/09
|
35
|
40
|
44
|
42
|
36
|
31
|
39
|
44
|
37
|
34
|
20
|
20
|
28
|
31
|
31
|
24
|
21
|
21
|
31
|
20
|
16
|
30
|
26
|
27
|
34
|
44
|
26
|
25
|
33
|
33
|
|
|
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