Air Quality
Excellent
No health implications.
7
PM2.5
22
PM10
72
O3
0.3
CO
5
SO2
4
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
18 Aug
53
Good
Wed
19 Aug
52
Good
Thu
20 Aug
56
Good
Fri
21 Aug
58
Good
Sat
22 Aug
52
Good
Sun
23 Aug
55
Good
Mon
24 Aug
15
Excellent
Air quality in the last 12 months (Yi'an)
|
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
|
|
|
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
|
|
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