Air Quality
Excellent
No health implications.
15
PM2.5
33
PM10
78
O3
0.6
CO
11
SO2
10
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
5 Jan
70
Good
Tue
6 Jan
77
Good
Wed
7 Jan
50
Excellent
Thu
8 Jan
91
Good
Fri
9 Jan
57
Good
Sat
10 Jan
62
Good
Sun
11 Jan
38
Excellent
Air quality in the last 12 months (Yi County)
|
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
|
|
|
2025/08
|
33
|
32
|
28
|
16
|
20
|
14
|
19
|
22
|
22
|
22
|
34
|
34
|
21
|
29
|
34
|
28
|
19
|
34
|
46
|
27
|
36
|
19
|
35
|
16
|
19
|
20
|
29
|
11
|
28
|
38
|
35
|
|
2025/07
|
37
|
31
|
18
|
30
|
44
|
20
|
27
|
38
|
28
|
33
|
40
|
34
|
17
|
20
|
26
|
20
|
12
|
18
|
33
|
19
|
24
|
35
|
23
|
23
|
34
|
36
|
38
|
30
|
21
|
17
|
25
|
|
2025/06
|
27
|
56
|
36
|
18
|
43
|
29
|
17
|
42
|
31
|
20
|
36
|
46
|
31
|
34
|
28
|
20
|
23
|
41
|
34
|
23
|
22
|
29
|
46
|
43
|
43
|
46
|
43
|
26
|
42
|
32
|
|
|
2025/05
|
36
|
36
|
39
|
28
|
36
|
39
|
50
|
64
|
31
|
38
|
64
|
74
|
66
|
58
|
63
|
52
|
32
|
30
|
57
|
70
|
68
|
77
|
32
|
45
|
36
|
52
|
71
|
61
|
49
|
66
|
50
|
|
2025/04
|
86
|
31
|
60
|
56
|
42
|
53
|
82
|
37
|
36
|
60
|
63
|
46
|
20
|
19
|
45
|
63
|
69
|
20
|
27
|
51
|
36
|
23
|
50
|
54
|
37
|
59
|
31
|
40
|
65
|
50
|
|
|
2025/03
|
141
|
45
|
38
|
60
|
98
|
47
|
76
|
84
|
170
|
122
|
110
|
85
|
56
|
47
|
46
|
41
|
54
|
28
|
59
|
91
|
59
|
72
|
136
|
63
|
89
|
111
|
58
|
31
|
25
|
29
|
65
|
|
2025/02
|
78
|
77
|
36
|
28
|
37
|
63
|
61
|
41
|
45
|
83
|
100
|
47
|
80
|
84
|
121
|
44
|
26
|
28
|
37
|
40
|
35
|
36
|
38
|
72
|
71
|
73
|
133
|
208
|
|||
|
2025/01
|
45
|
35
|
58
|
88
|
81
|
57
|
36
|
36
|
32
|
50
|
75
|
87
|
94
|
44
|
39
|
64
|
92
|
124
|
59
|
79
|
55
|
65
|
115
|
126
|
99
|
99
|
56
|
45
|
157
|
47
|
75
|
|
2024/12
|
70
|
28
|
50
|
45
|
51
|
30
|
38
|
50
|
95
|
55
|
47
|
73
|
54
|
47
|
34
|
59
|
32
|
47
|
64
|
57
|
34
|
56
|
50
|
74
|
87
|
36
|
30
|
44
|
82
|
77
|
53
|
|
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