Air Quality
Good
Some pollutants may slightly affect very few hypersensitive individuals.
35
PM2.5
99
*
PM10
75
O3
0.4
CO
5
SO2
6
NO2
Some pollutants may slightly affect very few hypersensitive individuals.
Advise
Only very few hypersensitive people should reduce outdoor activities.
Air Quality
Today
8 May
62
Good
Fri
9 May
108
Light
Sat
10 May
113
Light
Sun
11 May
113
Light
Mon
12 May
105
Light
Tue
13 May
21
Excellent
Wed
14 May
21
Excellent
Air quality in the last 12 months (Xian'an)
|
2025/02
|
62
|
47
|
59
|
58
|
45
|
46
|
79
|
42
|
37
|
39
|
46
|
76
|
86
|
53
|
62
|
58
|
44
|
29
|
35
|
55
|
58
|
30
|
72
|
93
|
82
|
53
|
34
|
40
|
|||
|
2025/01
|
77
|
106
|
162
|
143
|
104
|
68
|
79
|
68
|
57
|
48
|
58
|
66
|
56
|
81
|
68
|
57
|
61
|
65
|
67
|
76
|
73
|
73
|
183
|
139
|
27
|
35
|
54
|
60
|
85
|
54
|
74
|
|
2024/12
|
43
|
51
|
95
|
92
|
48
|
49
|
52
|
98
|
60
|
61
|
74
|
82
|
79
|
56
|
53
|
46
|
53
|
76
|
58
|
72
|
86
|
59
|
68
|
71
|
80
|
118
|
138
|
54
|
44
|
70
|
97
|
|
2024/11
|
52
|
86
|
66
|
71
|
65
|
40
|
34
|
36
|
45
|
53
|
46
|
40
|
50
|
60
|
73
|
75
|
17
|
19
|
33
|
33
|
36
|
38
|
61
|
51
|
33
|
32
|
45
|
55
|
48
|
39
|
|
|
2024/10
|
19
|
47
|
45
|
34
|
41
|
71
|
27
|
31
|
42
|
59
|
61
|
55
|
86
|
58
|
54
|
33
|
19
|
23
|
19
|
26
|
45
|
26
|
31
|
36
|
49
|
48
|
37
|
60
|
55
|
45
|
44
|
|
2024/09
|
38
|
45
|
43
|
38
|
44
|
55
|
44
|
40
|
43
|
37
|
40
|
38
|
30
|
39
|
39
|
29
|
47
|
41
|
35
|
41
|
33
|
30
|
36
|
42
|
45
|
53
|
51
|
29
|
33
|
45
|
|
|
2024/08
|
13
|
16
|
23
|
22
|
26
|
23
|
24
|
23
|
22
|
24
|
76
|
81
|
45
|
24
|
24
|
30
|
43
|
40
|
28
|
34
|
34
|
32
|
24
|
22
|
23
|
33
|
27
|
21
|
40
|
36
|
37
|
|
2024/07
|
11
|
21
|
19
|
14
|
16
|
16
|
17
|
18
|
22
|
31
|
32
|
24
|
23
|
33
|
26
|
23
|
15
|
15
|
12
|
16
|
18
|
18
|
24
|
30
|
38
|
27
|
18
|
11
|
11
|
17
|
17
|
|
2024/06
|
22
|
40
|
30
|
20
|
21
|
24
|
29
|
29
|
19
|
14
|
17
|
29
|
27
|
22
|
22
|
28
|
33
|
17
|
12
|
16
|
19
|
9
|
9
|
13
|
17
|
20
|
11
|
10
|
9
|
13
|
|
|
2024/05
|
37
|
30
|
30
|
22
|
31
|
27
|
39
|
43
|
44
|
42
|
41
|
101
|
78
|
58
|
62
|
55
|
54
|
50
|
59
|
45
|
38
|
16
|
19
|
26
|
26
|
29
|
20
|
26
|
29
|
66
|
50
|
|
2024/04
|
22
|
14
|
47
|
67
|
55
|
50
|
50
|
54
|
28
|
31
|
43
|
32
|
21
|
28
|
30
|
48
|
45
|
27
|
17
|
41
|
46
|
41
|
39
|
88
|
79
|
63
|
36
|
25
|
33
|
23
|
|
|
2024/03
|
43
|
37
|
28
|
22
|
66
|
61
|
47
|
63
|
63
|
60
|
61
|
56
|
52
|
38
|
54
|
69
|
61
|
50
|
57
|
86
|
56
|
50
|
30
|
40
|
22
|
28
|
36
|
43
|
34
|
34
|
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