Air Quality
Excellent
No health implications.
26
PM2.5
35
PM10
40
O3
0.3
CO
6
SO2
7
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
3 Dec
57
Good
Thu
4 Dec
75
Good
Fri
5 Dec
62
Good
Sat
6 Dec
65
Good
Sun
7 Dec
67
Good
Mon
8 Dec
40
Excellent
Tue
9 Dec
37
Excellent
Yi'an Air quality rank
Air quality in the last 12 months (Yi'an)
|
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
|
|
|
2025/08
|
22
|
25
|
17
|
20
|
23
|
17
|
18
|
22
|
16
|
14
|
15
|
20
|
22
|
19
|
23
|
15
|
19
|
22
|
24
|
19
|
24
|
16
|
24
|
19
|
24
|
20
|
23
|
25
|
26
|
20
|
31
|
|
2025/07
|
28
|
21
|
21
|
24
|
16
|
19
|
20
|
21
|
23
|
33
|
40
|
22
|
20
|
22
|
26
|
21
|
22
|
23
|
24
|
21
|
18
|
23
|
35
|
32
|
22
|
28
|
21
|
23
|
17
|
16
|
20
|
|
2025/06
|
20
|
24
|
19
|
19
|
21
|
14
|
17
|
22
|
15
|
18
|
18
|
31
|
31
|
20
|
25
|
23
|
20
|
25
|
20
|
17
|
14
|
20
|
32
|
37
|
39
|
34
|
43
|
33
|
29
|
37
|
|
|
2025/05
|
35
|
25
|
23
|
17
|
18
|
23
|
29
|
40
|
31
|
33
|
48
|
73
|
63
|
41
|
62
|
40
|
19
|
24
|
23
|
26
|
24
|
20
|
25
|
29
|
32
|
39
|
41
|
54
|
58
|
59
|
42
|
|
2025/04
|
53
|
48
|
44
|
79
|
56
|
45
|
58
|
41
|
56
|
116
|
74
|
42
|
22
|
21
|
16
|
23
|
45
|
30
|
18
|
55
|
76
|
17
|
29
|
17
|
12
|
21
|
56
|
40
|
72
|
31
|
|
|
2025/03
|
21
|
30
|
39
|
53
|
72
|
60
|
45
|
36
|
77
|
103
|
48
|
46
|
18
|
17
|
18
|
24
|
20
|
19
|
46
|
31
|
16
|
19
|
69
|
35
|
20
|
33
|
15
|
17
|
12
|
18
|
33
|
|
2025/02
|
64
|
131
|
82
|
26
|
45
|
52
|
21
|
17
|
25
|
39
|
72
|
64
|
44
|
28
|
32
|
31
|
23
|
21
|
25
|
28
|
31
|
33
|
30
|
33
|
38
|
22
|
46
|
30
|
|||
|
2025/01
|
115
|
76
|
62
|
129
|
105
|
64
|
51
|
34
|
35
|
55
|
87
|
168
|
190
|
132
|
36
|
38
|
76
|
142
|
171
|
130
|
99
|
67
|
165
|
231
|
230
|
165
|
40
|
44
|
48
|
31
|
41
|
|
2024/12
|
45
|
19
|
23
|
20
|
28
|
19
|
27
|
33
|
100
|
77
|
25
|
43
|
68
|
43
|
31
|
26
|
34
|
38
|
54
|
93
|
44
|
29
|
34
|
42
|
46
|
28
|
31
|
36
|
53
|
91
|
105
|
|
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