Air Quality
Excellent
No health implications.
4
PM2.5
10
PM10
39
O3
0.3
CO
7
SO2
9
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
13 Oct
49
Excellent
Wed
14 Oct
56
Good
Thu
15 Oct
77
Good
Fri
16 Oct
69
Good
Sat
17 Oct
90
Good
Sun
18 Oct
15
Excellent
Mon
19 Oct
19
Excellent
Air quality in the last 12 months (Yi County)
|
2026/08
|
42
|
41
|
42
|
46
|
49
|
48
|
29
|
29
|
32
|
37
|
30
|
27
|
21
|
26
|
31
|
45
|
27
|
33
|
47
|
53
|
51
|
31
|
27
|
29
|
37
|
32
|
33
|
22
|
31
|
44
|
19
|
|
2026/07
|
34
|
45
|
60
|
51
|
39
|
33
|
41
|
41
|
47
|
35
|
23
|
29
|
22
|
23
|
35
|
36
|
53
|
53
|
34
|
43
|
44
|
50
|
36
|
35
|
33
|
38
|
43
|
53
|
43
|
45
|
46
|
|
2026/06
|
71
|
62
|
46
|
27
|
21
|
26
|
26
|
31
|
28
|
26
|
35
|
56
|
48
|
44
|
44
|
40
|
39
|
48
|
39
|
30
|
24
|
41
|
32
|
38
|
33
|
43
|
72
|
61
|
40
|
36
|
|
|
2026/05
|
48
|
43
|
25
|
39
|
77
|
45
|
30
|
36
|
43
|
51
|
54
|
51
|
48
|
47
|
47
|
40
|
39
|
25
|
32
|
34
|
41
|
31
|
35
|
50
|
35
|
32
|
36
|
35
|
31
|
49
|
86
|
|
2026/04
|
56
|
62
|
95
|
31
|
37
|
28
|
28
|
73
|
45
|
38
|
49
|
72
|
34
|
48
|
72
|
94
|
68
|
104
|
72
|
161
|
68
|
40
|
53
|
71
|
77
|
33
|
36
|
29
|
35
|
58
|
|
|
2026/03
|
67
|
76
|
125
|
39
|
31
|
27
|
34
|
56
|
30
|
53
|
63
|
60
|
75
|
40
|
84
|
68
|
121
|
34
|
49
|
43
|
97
|
161
|
110
|
141
|
104
|
91
|
36
|
63
|
47
|
33
|
49
|
|
2026/02
|
66
|
42
|
93
|
92
|
92
|
36
|
46
|
38
|
79
|
83
|
71
|
132
|
163
|
110
|
54
|
53
|
223
|
22
|
73
|
122
|
128
|
96
|
35
|
72
|
95
|
43
|
40
|
38
|
|||
|
2026/01
|
49
|
65
|
87
|
78
|
38
|
66
|
39
|
53
|
97
|
32
|
21
|
53
|
34
|
68
|
62
|
27
|
32
|
34
|
38
|
39
|
38
|
50
|
55
|
52
|
35
|
73
|
32
|
49
|
55
|
59
|
65
|
|
2025/12
|
41
|
26
|
40
|
48
|
55
|
88
|
63
|
37
|
70
|
88
|
29
|
55
|
91
|
93
|
119
|
63
|
77
|
111
|
108
|
28
|
32
|
55
|
56
|
47
|
30
|
40
|
85
|
123
|
40
|
38
|
37
|
|
2025/11
|
70
|
35
|
63
|
59
|
122
|
56
|
57
|
139
|
39
|
45
|
50
|
73
|
46
|
92
|
156
|
66
|
39
|
56
|
72
|
42
|
62
|
88
|
130
|
134
|
32
|
63
|
36
|
74
|
69
|
35
|
|
|
2025/10
|
71
|
62
|
45
|
44
|
33
|
27
|
45
|
24
|
29
|
36
|
45
|
34
|
56
|
87
|
55
|
31
|
37
|
23
|
26
|
25
|
36
|
43
|
46
|
61
|
85
|
38
|
44
|
61
|
120
|
49
|
59
|
|
2025/09
|
42
|
42
|
53
|
48
|
42
|
26
|
31
|
24
|
34
|
29
|
51
|
37
|
35
|
32
|
22
|
26
|
16
|
19
|
37
|
39
|
34
|
40
|
38
|
29
|
33
|
50
|
72
|
47
|
49
|
62
|
|
|
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