Air Quality
Excellent
No health implications.
14
PM2.5
32
PM10
147
O3
0.4
CO
11
SO2
3
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
19 Jun
85
Good
Fri
20 Jun
75
Good
Sat
21 Jun
80
Good
Sun
22 Jun
89
Good
Mon
23 Jun
63
Good
Tue
24 Jun
86
Good
Wed
25 Jun
16
Excellent
Air quality in the last 12 months (Ulan)
|
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
|
|
2024/11
|
32
|
28
|
34
|
33
|
30
|
26
|
34
|
35
|
52
|
54
|
46
|
40
|
35
|
42
|
54
|
44
|
37
|
31
|
29
|
30
|
47
|
29
|
33
|
49
|
46
|
34
|
24
|
21
|
33
|
27
|
|
|
2024/10
|
25
|
24
|
22
|
32
|
31
|
31
|
30
|
31
|
29
|
26
|
27
|
27
|
29
|
28
|
29
|
20
|
24
|
46
|
64
|
59
|
59
|
30
|
24
|
30
|
30
|
31
|
22
|
22
|
28
|
33
|
30
|
|
2024/09
|
24
|
24
|
27
|
46
|
31
|
24
|
19
|
26
|
63
|
27
|
18
|
74
|
18
|
20
|
23
|
32
|
26
|
20
|
49
|
25
|
26
|
24
|
22
|
33
|
39
|
29
|
25
|
24
|
40
|
35
|
|
|
2024/08
|
28
|
26
|
25
|
27
|
26
|
26
|
32
|
43
|
40
|
15
|
16
|
20
|
32
|
25
|
38
|
31
|
22
|
20
|
21
|
25
|
37
|
68
|
49
|
42
|
48
|
27
|
31
|
36
|
25
|
33
|
32
|
|
2024/07
|
20
|
20
|
64
|
52
|
49
|
39
|
40
|
69
|
49
|
26
|
27
|
24
|
19
|
21
|
22
|
23
|
17
|
27
|
48
|
146
|
86
|
50
|
38
|
31
|
32
|
30
|
26
|
21
|
22
|
22
|
20
|
|
2024/06
|
27
|
23
|
25
|
26
|
38
|
30
|
34
|
19
|
18
|
19
|
19
|
19
|
27
|
19
|
20
|
22
|
22
|
37
|
31
|
33
|
15
|
19
|
19
|
18
|
34
|
30
|
27
|
27
|
35
|
21
|
|
|
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