Air Quality
Excellent
No health implications.
16
PM2.5
37
PM10
46
O3
0.3
CO
4
SO2
24
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
25 May
47
Excellent
Tue
26 May
44
Excellent
Wed
27 May
50
Excellent
Thu
28 May
49
Excellent
Fri
29 May
42
Excellent
Sat
30 May
37
Excellent
Sun
31 May
15
Excellent
Air quality in the last 12 months (Xi'an)
|
2026/04
|
76
|
169
|
187
|
59
|
51
|
50
|
36
|
37
|
71
|
48
|
30
|
42
|
35
|
45
|
39
|
55
|
42
|
37
|
48
|
61
|
55
|
42
|
38
|
41
|
33
|
31
|
30
|
38
|
42
|
39
|
|
|
2026/03
|
40
|
38
|
57
|
47
|
51
|
44
|
41
|
43
|
43
|
50
|
61
|
53
|
68
|
47
|
78
|
80
|
164
|
184
|
73
|
72
|
87
|
114
|
73
|
71
|
92
|
138
|
178
|
132
|
133
|
35
|
53
|
|
2026/02
|
47
|
61
|
62
|
80
|
48
|
35
|
35
|
35
|
61
|
97
|
65
|
60
|
88
|
112
|
58
|
79
|
124
|
34
|
62
|
84
|
105
|
68
|
77
|
57
|
54
|
55
|
48
|
49
|
|||
|
2026/01
|
38
|
39
|
53
|
51
|
46
|
61
|
56
|
35
|
64
|
63
|
46
|
67
|
64
|
48
|
59
|
44
|
45
|
56
|
55
|
37
|
38
|
37
|
40
|
40
|
37
|
51
|
56
|
61
|
43
|
37
|
44
|
|
2025/12
|
50
|
42
|
38
|
39
|
40
|
47
|
46
|
50
|
40
|
44
|
44
|
46
|
54
|
55
|
74
|
45
|
41
|
69
|
80
|
49
|
39
|
63
|
63
|
58
|
59
|
38
|
49
|
60
|
47
|
42
|
42
|
|
2025/11
|
65
|
59
|
52
|
51
|
77
|
87
|
45
|
54
|
54
|
32
|
53
|
72
|
51
|
88
|
116
|
112
|
43
|
76
|
45
|
76
|
74
|
66
|
76
|
119
|
52
|
76
|
89
|
50
|
62
|
42
|
|
|
2025/10
|
33
|
39
|
42
|
35
|
27
|
30
|
31
|
38
|
29
|
37
|
53
|
36
|
46
|
47
|
51
|
35
|
42
|
35
|
35
|
29
|
37
|
43
|
48
|
58
|
76
|
75
|
96
|
95
|
163
|
51
|
43
|
|
2025/09
|
30
|
29
|
29
|
28
|
30
|
33
|
35
|
32
|
28
|
31
|
31
|
35
|
45
|
37
|
29
|
28
|
24
|
26
|
27
|
34
|
36
|
28
|
34
|
37
|
26
|
27
|
28
|
32
|
44
|
42
|
|
|
2025/08
|
26
|
27
|
26
|
25
|
21
|
25
|
23
|
20
|
27
|
26
|
29
|
26
|
29
|
26
|
25
|
32
|
26
|
22
|
25
|
25
|
22
|
24
|
24
|
26
|
29
|
28
|
26
|
26
|
22
|
26
|
38
|
|
2025/07
|
17
|
20
|
22
|
25
|
23
|
22
|
20
|
30
|
25
|
23
|
20
|
20
|
25
|
26
|
21
|
19
|
17
|
20
|
18
|
23
|
26
|
21
|
30
|
25
|
27
|
28
|
29
|
26
|
25
|
17
|
24
|
|
2025/06
|
41
|
34
|
35
|
26
|
29
|
25
|
26
|
27
|
30
|
26
|
22
|
22
|
29
|
34
|
28
|
24
|
24
|
34
|
23
|
27
|
20
|
22
|
24
|
31
|
34
|
28
|
36
|
36
|
24
|
24
|
|
|
2025/05
|
32
|
29
|
31
|
28
|
26
|
34
|
39
|
46
|
44
|
27
|
41
|
39
|
44
|
35
|
22
|
30
|
39
|
26
|
25
|
28
|
39
|
38
|
26
|
38
|
29
|
29
|
29
|
40
|
37
|
45
|
44
|
|
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