Air Quality
Excellent
No health implications.
8
PM2.5
31
PM10
96
O3
0.8
CO
10
SO2
5
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
30 May
71
Good
Sat
31 May
63
Good
Sun
1 Jun
57
Good
Mon
2 Jun
58
Good
Tue
3 Jun
57
Good
Wed
4 Jun
62
Good
Thu
5 Jun
37
Excellent
Air quality in the last 12 months (Ulan)
|
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
|
|
|
2024/05
|
39
|
36
|
33
|
56
|
51
|
51
|
47
|
47
|
87
|
31
|
29
|
30
|
30
|
222
|
179
|
121
|
90
|
64
|
108
|
59
|
48
|
46
|
81
|
44
|
45
|
41
|
41
|
57
|
43
|
20
|
22
|
|
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