Air Quality
Excellent
No health implications.
14
PM2.5
38
PM10
34
O3
0.4
CO
13
SO2
23
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
25 Oct
94
Good
Mon
26 Oct
91
Good
Tue
27 Oct
60
Good
Wed
28 Oct
61
Good
Thu
29 Oct
73
Good
Fri
30 Oct
72
Good
Sat
31 Oct
43
Excellent
Air quality in the last 12 months (Yi'an)
|
2026/08
|
19
|
20
|
24
|
21
|
26
|
24
|
25
|
21
|
24
|
28
|
30
|
24
|
17
|
19
|
21
|
23
|
22
|
20
|
22
|
29
|
25
|
19
|
21
|
21
|
20
|
18
|
18
|
21
|
20
|
15
|
15
|
|
2026/07
|
39
|
33
|
28
|
28
|
30
|
27
|
24
|
17
|
18
|
30
|
36
|
22
|
21
|
22
|
21
|
19
|
22
|
24
|
27
|
34
|
28
|
31
|
36
|
30
|
23
|
24
|
23
|
30
|
17
|
19
|
24
|
|
2026/06
|
28
|
22
|
25
|
22
|
15
|
17
|
20
|
17
|
20
|
24
|
29
|
27
|
23
|
22
|
20
|
29
|
32
|
31
|
37
|
37
|
28
|
27
|
31
|
35
|
32
|
29
|
31
|
26
|
34
|
43
|
|
|
2026/05
|
28
|
27
|
28
|
31
|
48
|
26
|
31
|
32
|
33
|
56
|
49
|
57
|
47
|
69
|
28
|
24
|
21
|
25
|
34
|
35
|
40
|
39
|
33
|
41
|
28
|
25
|
24
|
24
|
23
|
26
|
51
|
|
2026/04
|
46
|
74
|
57
|
52
|
57
|
37
|
24
|
48
|
27
|
30
|
26
|
31
|
26
|
38
|
61
|
46
|
52
|
27
|
27
|
44
|
24
|
24
|
25
|
30
|
27
|
24
|
24
|
28
|
32
|
67
|
|
|
2026/03
|
32
|
31
|
53
|
46
|
31
|
31
|
35
|
53
|
43
|
37
|
30
|
39
|
73
|
32
|
32
|
27
|
97
|
46
|
42
|
56
|
127
|
73
|
75
|
139
|
128
|
56
|
45
|
64
|
126
|
35
|
76
|
|
2026/02
|
31
|
37
|
45
|
37
|
32
|
21
|
27
|
33
|
61
|
92
|
40
|
50
|
60
|
61
|
20
|
55
|
46
|
22
|
47
|
86
|
106
|
42
|
23
|
19
|
54
|
25
|
24
|
29
|
|||
|
2026/01
|
30
|
33
|
46
|
24
|
25
|
56
|
26
|
34
|
55
|
49
|
49
|
73
|
39
|
33
|
55
|
46
|
31
|
42
|
34
|
27
|
29
|
23
|
28
|
28
|
23
|
48
|
40
|
32
|
29
|
25
|
35
|
|
2025/12
|
23
|
25
|
31
|
33
|
48
|
52
|
72
|
35
|
33
|
24
|
23
|
29
|
48
|
55
|
47
|
27
|
45
|
88
|
79
|
37
|
34
|
55
|
60
|
41
|
29
|
29
|
50
|
65
|
26
|
28
|
30
|
|
2025/11
|
115
|
27
|
74
|
56
|
117
|
64
|
19
|
104
|
46
|
18
|
27
|
51
|
32
|
28
|
71
|
40
|
22
|
36
|
79
|
40
|
46
|
105
|
99
|
33
|
36
|
98
|
43
|
55
|
65
|
29
|
|
|
2025/10
|
33
|
34
|
54
|
25
|
21
|
23
|
37
|
22
|
35
|
35
|
47
|
19
|
29
|
25
|
30
|
35
|
45
|
19
|
19
|
19
|
28
|
26
|
32
|
39
|
62
|
34
|
27
|
33
|
127
|
56
|
56
|
|
2025/09
|
21
|
21
|
32
|
46
|
40
|
19
|
19
|
17
|
15
|
20
|
20
|
28
|
26
|
24
|
19
|
16
|
18
|
22
|
30
|
23
|
22
|
28
|
38
|
22
|
17
|
22
|
28
|
29
|
32
|
46
|
|
|
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