Air Quality
Excellent
No health implications.
3
PM2.5
9
PM10
22
O3
0.4
CO
4
SO2
15
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
19 Oct
25
Excellent
Tue
20 Oct
32
Excellent
Wed
21 Oct
46
Excellent
Thu
22 Oct
53
Good
Fri
23 Oct
69
Good
Sat
24 Oct
65
Good
Sun
25 Oct
43
Excellent
Air quality in the last 12 months (Xian'an)
|
2026/08
|
15
|
18
|
20
|
26
|
30
|
29
|
36
|
32
|
38
|
28
|
15
|
15
|
28
|
25
|
29
|
28
|
33
|
37
|
37
|
34
|
31
|
28
|
26
|
24
|
23
|
28
|
28
|
40
|
38
|
39
|
31
|
|
2026/07
|
22
|
16
|
14
|
14
|
13
|
15
|
15
|
14
|
15
|
21
|
29
|
31
|
32
|
29
|
21
|
20
|
20
|
26
|
30
|
32
|
27
|
15
|
19
|
23
|
28
|
27
|
17
|
15
|
17
|
16
|
17
|
|
2026/06
|
50
|
49
|
34
|
39
|
58
|
50
|
50
|
33
|
35
|
39
|
47
|
32
|
23
|
27
|
43
|
39
|
37
|
34
|
18
|
21
|
18
|
20
|
21
|
20
|
23
|
37
|
44
|
41
|
37
|
21
|
|
|
2026/05
|
31
|
26
|
37
|
34
|
34
|
35
|
44
|
46
|
37
|
36
|
40
|
47
|
30
|
26
|
33
|
24
|
23
|
22
|
17
|
30
|
36
|
23
|
21
|
27
|
28
|
21
|
27
|
35
|
52
|
48
|
50
|
|
2026/04
|
40
|
35
|
43
|
48
|
66
|
63
|
76
|
49
|
34
|
42
|
48
|
45
|
46
|
36
|
34
|
47
|
42
|
49
|
50
|
53
|
27
|
21
|
36
|
36
|
34
|
43
|
54
|
33
|
28
|
32
|
|
|
2026/03
|
26
|
35
|
54
|
67
|
75
|
64
|
69
|
70
|
79
|
62
|
47
|
56
|
53
|
50
|
104
|
20
|
18
|
29
|
44
|
61
|
42
|
53
|
59
|
71
|
59
|
56
|
62
|
53
|
54
|
36
|
33
|
|
2026/02
|
49
|
57
|
70
|
64
|
86
|
84
|
50
|
60
|
51
|
60
|
76
|
78
|
82
|
63
|
71
|
42
|
82
|
75
|
97
|
68
|
46
|
64
|
89
|
42
|
31
|
27
|
41
|
35
|
|||
|
2026/01
|
32
|
51
|
58
|
59
|
89
|
63
|
50
|
61
|
67
|
64
|
73
|
68
|
67
|
55
|
90
|
88
|
164
|
175
|
28
|
51
|
64
|
76
|
60
|
68
|
74
|
126
|
103
|
57
|
66
|
28
|
44
|
|
2025/12
|
72
|
100
|
65
|
72
|
95
|
70
|
89
|
120
|
101
|
103
|
121
|
105
|
39
|
47
|
51
|
56
|
138
|
137
|
76
|
142
|
73
|
46
|
53
|
88
|
73
|
62
|
73
|
68
|
66
|
108
|
99
|
|
2025/11
|
47
|
51
|
64
|
60
|
49
|
46
|
38
|
25
|
46
|
55
|
73
|
56
|
53
|
50
|
50
|
50
|
51
|
32
|
31
|
39
|
47
|
54
|
65
|
54
|
84
|
55
|
92
|
70
|
58
|
52
|
|
|
2025/10
|
34
|
36
|
31
|
41
|
53
|
37
|
42
|
43
|
41
|
48
|
62
|
70
|
43
|
49
|
53
|
29
|
40
|
12
|
12
|
25
|
21
|
30
|
40
|
42
|
57
|
62
|
62
|
54
|
62
|
72
|
48
|
|
2025/09
|
15
|
19
|
22
|
22
|
28
|
36
|
33
|
26
|
23
|
21
|
15
|
19
|
27
|
24
|
25
|
30
|
34
|
24
|
20
|
20
|
32
|
44
|
32
|
10
|
17
|
35
|
41
|
41
|
40
|
34
|
|
|
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