Air Quality
Excellent
No health implications.
8
PM2.5
22
PM10
50
O3
0.7
CO
4
SO2
13
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
1 Feb
48
Excellent
Mon
2 Feb
62
Good
Tue
3 Feb
58
Good
Wed
4 Feb
64
Good
Thu
5 Feb
64
Good
Fri
6 Feb
61
Good
Sat
7 Feb
40
Excellent
Yi County Air quality rank
Air quality in the last 12 months (Yi County)
|
2025/12
|
59
|
79
|
68
|
58
|
57
|
57
|
54
|
74
|
69
|
67
|
69
|
72
|
34
|
42
|
41
|
40
|
71
|
97
|
72
|
102
|
44
|
39
|
45
|
20
|
63
|
56
|
44
|
39
|
43
|
66
|
58
|
|
2025/11
|
35
|
41
|
53
|
47
|
28
|
20
|
19
|
17
|
14
|
39
|
38
|
27
|
37
|
40
|
50
|
59
|
42
|
31
|
36
|
38
|
42
|
47
|
47
|
57
|
83
|
62
|
97
|
83
|
57
|
49
|
|
|
2025/10
|
27
|
33
|
33
|
33
|
36
|
33
|
41
|
47
|
39
|
33
|
41
|
47
|
39
|
30
|
33
|
26
|
29
|
15
|
12
|
18
|
19
|
27
|
28
|
30
|
37
|
46
|
34
|
46
|
48
|
32
|
23
|
|
2025/09
|
17
|
21
|
25
|
28
|
31
|
24
|
27
|
30
|
15
|
17
|
19
|
21
|
21
|
21
|
24
|
30
|
30
|
26
|
25
|
18
|
18
|
23
|
28
|
16
|
18
|
24
|
32
|
36
|
39
|
34
|
|
|
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
|
|
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