Air Quality
Excellent
No health implications.
21
PM2.5
27
PM10
54
O3
0.7
CO
7
SO2
18
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
18 Mar
43
Excellent
Wed
19 Mar
42
Excellent
Thu
20 Mar
43
Excellent
Fri
21 Mar
55
Good
Sat
22 Mar
56
Good
Sun
23 Mar
54
Good
Mon
24 Mar
30
Excellent
Air quality in the last 12 months (Yimen)
|
2025/02
|
49
|
51
|
35
|
40
|
50
|
52
|
42
|
42
|
40
|
34
|
43
|
47
|
55
|
58
|
58
|
66
|
48
|
45
|
48
|
53
|
55
|
52
|
53
|
32
|
30
|
26
|
31
|
43
|
|||
|
2025/01
|
43
|
34
|
44
|
40
|
36
|
48
|
39
|
38
|
38
|
40
|
25
|
39
|
43
|
41
|
73
|
64
|
48
|
41
|
48
|
45
|
44
|
39
|
35
|
25
|
27
|
32
|
40
|
60
|
72
|
39
|
34
|
|
2024/12
|
24
|
24
|
29
|
29
|
25
|
30
|
28
|
30
|
21
|
31
|
34
|
30
|
32
|
33
|
28
|
29
|
27
|
32
|
34
|
35
|
32
|
31
|
30
|
36
|
31
|
37
|
43
|
48
|
36
|
32
|
38
|
|
2024/11
|
34
|
35
|
43
|
45
|
47
|
54
|
29
|
20
|
17
|
27
|
25
|
24
|
22
|
27
|
26
|
31
|
34
|
35
|
33
|
33
|
25
|
20
|
22
|
19
|
28
|
33
|
26
|
21
|
20
|
14
|
|
|
2024/10
|
11
|
19
|
22
|
19
|
19
|
26
|
31
|
36
|
23
|
15
|
21
|
25
|
22
|
28
|
25
|
25
|
19
|
29
|
39
|
33
|
19
|
22
|
19
|
26
|
28
|
34
|
47
|
47
|
47
|
41
|
37
|
|
2024/09
|
22
|
25
|
23
|
23
|
16
|
30
|
32
|
15
|
12
|
14
|
17
|
20
|
28
|
30
|
31
|
21
|
22
|
19
|
28
|
33
|
35
|
19
|
22
|
38
|
38
|
40
|
29
|
19
|
19
|
25
|
|
|
2024/08
|
34
|
30
|
22
|
16
|
19
|
16
|
17
|
14
|
10
|
18
|
23
|
38
|
48
|
40
|
34
|
30
|
31
|
33
|
31
|
34
|
31
|
28
|
14
|
17
|
23
|
19
|
24
|
27
|
25
|
27
|
27
|
|
2024/07
|
11
|
17
|
14
|
11
|
12
|
15
|
12
|
11
|
13
|
12
|
10
|
12
|
15
|
12
|
14
|
16
|
18
|
18
|
18
|
13
|
15
|
16
|
20
|
18
|
24
|
24
|
32
|
29
|
26
|
16
|
18
|
|
2024/06
|
33
|
29
|
26
|
30
|
18
|
17
|
15
|
15
|
14
|
15
|
16
|
17
|
11
|
17
|
19
|
18
|
25
|
24
|
23
|
30
|
23
|
21
|
17
|
17
|
18
|
16
|
13
|
11
|
13
|
11
|
|
|
2024/05
|
50
|
46
|
30
|
50
|
48
|
39
|
32
|
38
|
29
|
23
|
24
|
31
|
26
|
31
|
34
|
19
|
24
|
27
|
32
|
18
|
32
|
36
|
35
|
25
|
28
|
11
|
13
|
17
|
16
|
34
|
19
|
|
2024/04
|
29
|
40
|
52
|
54
|
52
|
71
|
63
|
56
|
61
|
60
|
71
|
71
|
60
|
47
|
46
|
66
|
75
|
57
|
39
|
40
|
33
|
44
|
51
|
48
|
41
|
43
|
47
|
57
|
47
|
52
|
|
|
2024/03
|
36
|
44
|
34
|
30
|
24
|
25
|
30
|
45
|
41
|
48
|
41
|
64
|
59
|
50
|
52
|
57
|
67
|
51
|
55
|
62
|
48
|
34
|
21
|
30
|
33
|
44
|
57
|
45
|
50
|
61
|
52
|
|
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