Air Quality
Excellent
No health implications.
2
PM2.5
18
PM10
57
O3
0.2
CO
5
SO2
2
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
13 Nov
57
Good
Fri
14 Nov
61
Good
Sat
15 Nov
72
Good
Sun
16 Nov
58
Good
Mon
17 Nov
61
Good
Tue
18 Nov
28
Excellent
Wed
19 Nov
24
Excellent
Air quality in the last 12 months (Yi'an)
|
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
|
|
2024/11
|
51
|
60
|
49
|
28
|
40
|
66
|
132
|
138
|
204
|
116
|
217
|
72
|
156
|
267
|
171
|
56
|
20
|
26
|
56
|
106
|
78
|
26
|
53
|
131
|
159
|
68
|
23
|
41
|
24
|
31
|
|
|
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