Air Quality
Excellent
No health implications.
7
PM2.5
12
PM10
24
O3
0.6
CO
9
SO2
15
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
20 Sep
33
Excellent
Sat
21 Sep
35
Excellent
Sun
22 Sep
40
Excellent
Mon
23 Sep
37
Excellent
Tue
24 Sep
43
Excellent
Wed
25 Sep
49
Excellent
Thu
26 Sep
49
Excellent
Air quality in the last 12 months (Xi'an)
|
2024/08
|
15
|
20
|
16
|
23
|
13
|
15
|
27
|
33
|
25
|
26
|
22
|
26
|
20
|
22
|
28
|
29
|
33
|
32
|
21
|
26
|
12
|
16
|
21
|
27
|
17
|
21
|
20
|
21
|
24
|
30
|
22
|
|
2024/07
|
48
|
41
|
10
|
28
|
38
|
26
|
24
|
51
|
38
|
46
|
54
|
59
|
55
|
54
|
54
|
29
|
12
|
25
|
25
|
19
|
22
|
15
|
20
|
12
|
15
|
8
|
9
|
8
|
13
|
23
|
19
|
|
2024/06
|
27
|
16
|
24
|
24
|
32
|
20
|
23
|
17
|
20
|
25
|
27
|
31
|
28
|
13
|
14
|
16
|
24
|
28
|
38
|
27
|
31
|
41
|
34
|
8
|
12
|
24
|
35
|
30
|
17
|
23
|
|
|
2024/05
|
30
|
34
|
39
|
37
|
26
|
33
|
34
|
28
|
38
|
44
|
54
|
27
|
34
|
39
|
18
|
26
|
35
|
37
|
18
|
12
|
20
|
29
|
23
|
20
|
21
|
11
|
11
|
23
|
33
|
27
|
14
|
|
2024/04
|
57
|
80
|
61
|
83
|
110
|
61
|
104
|
84
|
87
|
155
|
45
|
48
|
37
|
31
|
102
|
110
|
52
|
44
|
56
|
171
|
97
|
44
|
41
|
32
|
42
|
47
|
44
|
20
|
29
|
38
|
|
|
2024/03
|
25
|
38
|
30
|
40
|
37
|
39
|
39
|
32
|
35
|
58
|
62
|
31
|
39
|
51
|
47
|
57
|
37
|
52
|
35
|
37
|
46
|
32
|
39
|
29
|
36
|
55
|
65
|
182
|
55
|
42
|
41
|
|
2024/02
|
91
|
104
|
120
|
107
|
97
|
112
|
107
|
90
|
158
|
297
|
90
|
55
|
72
|
40
|
39
|
36
|
33
|
31
|
29
|
31
|
30
|
44
|
48
|
116
|
112
|
64
|
43
|
72
|
57
|
||
|
2024/01
|
70
|
73
|
90
|
49
|
36
|
42
|
28
|
35
|
64
|
53
|
34
|
40
|
55
|
30
|
44
|
68
|
40
|
45
|
69
|
43
|
40
|
31
|
49
|
43
|
69
|
72
|
68
|
70
|
85
|
116
|
78
|
|
2023/12
|
39
|
29
|
31
|
53
|
71
|
49
|
31
|
58
|
25
|
25
|
27
|
44
|
49
|
31
|
41
|
27
|
34
|
70
|
75
|
53
|
55
|
59
|
79
|
78
|
60
|
46
|
72
|
92
|
82
|
75
|
72
|
|
2023/11
|
35
|
40
|
30
|
47
|
76
|
51
|
35
|
36
|
33
|
25
|
38
|
48
|
40
|
56
|
67
|
32
|
25
|
36
|
27
|
28
|
53
|
48
|
25
|
20
|
24
|
37
|
66
|
24
|
23
|
28
|
|
|
2023/10
|
26
|
34
|
39
|
28
|
23
|
35
|
39
|
47
|
46
|
32
|
45
|
54
|
51
|
50
|
40
|
37
|
47
|
40
|
28
|
21
|
22
|
33
|
55
|
64
|
87
|
38
|
58
|
77
|
154
|
101
|
134
|
|
2023/09
|
27
|
29
|
28
|
35
|
24
|
29
|
28
|
37
|
37
|
31
|
28
|
23
|
25
|
28
|
31
|
34
|
39
|
41
|
19
|
22
|
26
|
35
|
27
|
33
|
23
|
28
|
31
|
27
|
28
|
25
|
|
|
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