Air Quality
Excellent
No health implications.
6
PM2.5
18
PM10
56
O3
0.5
CO
5
SO2
15
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
14 Apr
55
Good
Tue
15 Apr
51
Good
Wed
16 Apr
61
Good
Thu
17 Apr
61
Good
Fri
18 Apr
57
Good
Sat
19 Apr
39
Excellent
Sun
20 Apr
42
Excellent
Air quality in the last 12 months (Xi'an)
|
2025/02
|
126
|
137
|
52
|
77
|
88
|
78
|
46
|
26
|
53
|
75
|
50
|
62
|
73
|
76
|
71
|
45
|
35
|
63
|
73
|
69
|
67
|
67
|
70
|
62
|
72
|
45
|
58
|
80
|
|||
|
2025/01
|
32
|
30
|
49
|
63
|
83
|
82
|
53
|
38
|
53
|
64
|
83
|
101
|
84
|
53
|
33
|
47
|
57
|
53
|
59
|
76
|
87
|
100
|
97
|
86
|
82
|
90
|
63
|
75
|
79
|
66
|
101
|
|
2024/12
|
38
|
23
|
21
|
19
|
25
|
28
|
42
|
48
|
62
|
58
|
44
|
53
|
64
|
39
|
25
|
30
|
43
|
57
|
62
|
61
|
58
|
46
|
52
|
45
|
46
|
30
|
29
|
37
|
48
|
46
|
31
|
|
2024/11
|
85
|
144
|
117
|
31
|
19
|
30
|
43
|
52
|
41
|
32
|
37
|
38
|
49
|
21
|
26
|
36
|
28
|
35
|
34
|
50
|
51
|
53
|
68
|
53
|
37
|
51
|
33
|
42
|
33
|
55
|
|
|
2024/10
|
18
|
28
|
28
|
33
|
41
|
44
|
32
|
40
|
45
|
27
|
32
|
40
|
56
|
44
|
20
|
38
|
64
|
43
|
28
|
45
|
17
|
35
|
37
|
52
|
70
|
83
|
35
|
46
|
66
|
74
|
78
|
|
2024/09
|
17
|
20
|
23
|
22
|
19
|
20
|
22
|
24
|
26
|
21
|
28
|
25
|
24
|
23
|
36
|
32
|
28
|
30
|
24
|
18
|
20
|
29
|
28
|
24
|
23
|
26
|
33
|
35
|
28
|
17
|
|
|
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
|
|
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