Air Quality
Excellent
No health implications.
14
PM2.5
21
PM10
102
O3
0.7
CO
6
SO2
12
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
29 Apr
86
Good
Wed
30 Apr
85
Good
Thu
1 May
84
Good
Fri
2 May
59
Good
Sat
3 May
65
Good
Sun
4 May
73
Good
Mon
5 May
41
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