Air Quality
Excellent
No health implications.
20
PM2.5
35
PM10
73
O3
0.6
CO
11
SO2
6
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
20 Dec
53
Good
Sun
21 Dec
62
Good
Mon
22 Dec
82
Good
Tue
23 Dec
53
Good
Wed
24 Dec
46
Excellent
Thu
25 Dec
45
Excellent
Fri
26 Dec
33
Excellent
Air quality in the last 12 months (Ulan)
|
2025/11
|
32
|
31
|
27
|
24
|
39
|
82
|
108
|
84
|
52
|
46
|
39
|
39
|
32
|
33
|
37
|
28
|
41
|
32
|
29
|
31
|
30
|
33
|
51
|
55
|
37
|
63
|
32
|
31
|
26
|
36
|
|
|
2025/10
|
32
|
25
|
31
|
33
|
52
|
32
|
33
|
28
|
27
|
24
|
21
|
22
|
24
|
31
|
38
|
39
|
40
|
39
|
40
|
31
|
30
|
37
|
36
|
31
|
38
|
32
|
25
|
24
|
31
|
32
|
31
|
|
2025/09
|
32
|
41
|
48
|
39
|
50
|
54
|
42
|
43
|
42
|
39
|
40
|
46
|
50
|
40
|
72
|
53
|
36
|
36
|
32
|
44
|
38
|
90
|
47
|
35
|
35
|
43
|
49
|
35
|
35
|
35
|
|
|
2025/08
|
41
|
34
|
33
|
38
|
29
|
19
|
29
|
29
|
25
|
30
|
46
|
39
|
31
|
30
|
30
|
29
|
37
|
20
|
69
|
100
|
19
|
21
|
25
|
30
|
29
|
36
|
24
|
16
|
26
|
32
|
28
|
|
2025/07
|
33
|
28
|
29
|
23
|
22
|
32
|
63
|
55
|
37
|
42
|
36
|
31
|
44
|
45
|
37
|
25
|
24
|
29
|
20
|
19
|
22
|
24
|
27
|
19
|
22
|
23
|
24
|
24
|
33
|
61
|
75
|
|
2025/06
|
25
|
33
|
33
|
25
|
25
|
33
|
25
|
23
|
23
|
22
|
24
|
32
|
49
|
50
|
29
|
30
|
41
|
35
|
24
|
31
|
24
|
19
|
23
|
28
|
34
|
33
|
26
|
39
|
44
|
40
|
|
|
2025/05
|
46
|
41
|
60
|
164
|
60
|
72
|
102
|
82
|
39
|
21
|
23
|
49
|
51
|
57
|
27
|
39
|
46
|
38
|
32
|
47
|
170
|
82
|
86
|
80
|
32
|
38
|
42
|
60
|
67
|
41
|
37
|
|
2025/04
|
108
|
102
|
75
|
54
|
65
|
68
|
84
|
69
|
58
|
47
|
47
|
32
|
21
|
32
|
48
|
74
|
77
|
91
|
63
|
142
|
123
|
83
|
53
|
34
|
40
|
31
|
95
|
44
|
53
|
41
|
|
|
2025/03
|
60
|
67
|
56
|
34
|
111
|
167
|
93
|
52
|
70
|
66
|
62
|
63
|
43
|
49
|
42
|
38
|
40
|
63
|
60
|
55
|
54
|
60
|
53
|
47
|
58
|
40
|
169
|
61
|
74
|
131
|
145
|
|
2025/02
|
27
|
45
|
31
|
29
|
32
|
35
|
35
|
36
|
30
|
30
|
47
|
45
|
33
|
33
|
45
|
32
|
26
|
45
|
54
|
46
|
37
|
48
|
53
|
53
|
47
|
28
|
32
|
36
|
|||
|
2025/01
|
45
|
33
|
36
|
38
|
26
|
31
|
42
|
46
|
38
|
63
|
42
|
27
|
26
|
31
|
25
|
22
|
35
|
42
|
34
|
37
|
41
|
40
|
43
|
67
|
118
|
54
|
41
|
37
|
31
|
29
|
25
|
|
2024/12
|
21
|
33
|
29
|
37
|
34
|
28
|
31
|
37
|
35
|
42
|
40
|
52
|
42
|
34
|
27
|
35
|
38
|
45
|
40
|
36
|
35
|
38
|
41
|
37
|
34
|
31
|
28
|
30
|
51
|
45
|
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