Air Quality
Excellent
No health implications.
8
PM2.5
17
PM10
29
O3
0.6
CO
7
SO2
19
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
18 Sep
68
Good
Fri
19 Sep
60
Good
Sat
20 Sep
60
Good
Sun
21 Sep
60
Good
Mon
22 Sep
66
Good
Tue
23 Sep
64
Good
Wed
24 Sep
34
Excellent
Air quality in the last 12 months (Longmen)
|
2025/08
|
24
|
21
|
18
|
11
|
12
|
11
|
20
|
27
|
38
|
22
|
20
|
27
|
27
|
18
|
12
|
20
|
20
|
12
|
15
|
18
|
24
|
22
|
21
|
17
|
16
|
17
|
22
|
23
|
20
|
19
|
17
|
|
2025/07
|
15
|
18
|
29
|
37
|
37
|
28
|
40
|
34
|
34
|
17
|
8
|
19
|
23
|
30
|
36
|
36
|
39
|
39
|
19
|
10
|
10
|
12
|
17
|
20
|
23
|
26
|
39
|
26
|
28
|
31
|
15
|
|
2025/06
|
30
|
29
|
15
|
25
|
24
|
36
|
35
|
30
|
30
|
25
|
19
|
18
|
17
|
13
|
19
|
17
|
12
|
18
|
20
|
13
|
16
|
21
|
23
|
20
|
21
|
16
|
15
|
16
|
18
|
14
|
|
|
2025/05
|
39
|
42
|
45
|
37
|
31
|
24
|
16
|
33
|
22
|
26
|
29
|
31
|
36
|
32
|
25
|
21
|
21
|
26
|
19
|
22
|
25
|
25
|
24
|
21
|
50
|
52
|
42
|
33
|
16
|
14
|
28
|
|
2025/04
|
23
|
32
|
43
|
52
|
25
|
46
|
53
|
58
|
59
|
47
|
43
|
50
|
218
|
122
|
82
|
82
|
63
|
53
|
35
|
41
|
35
|
36
|
39
|
25
|
12
|
17
|
40
|
28
|
40
|
53
|
|
|
2025/03
|
31
|
30
|
31
|
22
|
9
|
9
|
19
|
26
|
30
|
39
|
34
|
33
|
31
|
29
|
17
|
13
|
46
|
35
|
30
|
36
|
40
|
48
|
58
|
63
|
69
|
51
|
36
|
45
|
9
|
6
|
6
|
|
2025/02
|
38
|
30
|
8
|
28
|
33
|
38
|
18
|
53
|
26
|
32
|
38
|
32
|
36
|
40
|
52
|
61
|
31
|
36
|
36
|
43
|
19
|
24
|
10
|
22
|
30
|
39
|
50
|
40
|
|||
|
2025/01
|
58
|
53
|
47
|
47
|
55
|
67
|
62
|
60
|
54
|
34
|
31
|
29
|
37
|
46
|
48
|
57
|
40
|
40
|
40
|
40
|
45
|
45
|
41
|
42
|
30
|
15
|
22
|
42
|
73
|
57
|
45
|
|
2024/12
|
39
|
41
|
37
|
37
|
50
|
64
|
44
|
31
|
47
|
35
|
46
|
18
|
30
|
62
|
37
|
37
|
37
|
35
|
56
|
52
|
40
|
57
|
64
|
58
|
56
|
61
|
62
|
69
|
63
|
72
|
57
|
|
2024/11
|
23
|
20
|
33
|
37
|
36
|
49
|
35
|
30
|
34
|
43
|
38
|
34
|
33
|
24
|
15
|
10
|
22
|
17
|
12
|
15
|
23
|
24
|
28
|
35
|
21
|
16
|
25
|
27
|
28
|
34
|
|
|
2024/10
|
25
|
23
|
30
|
27
|
28
|
31
|
35
|
50
|
31
|
27
|
32
|
43
|
44
|
40
|
40
|
32
|
35
|
31
|
30
|
26
|
24
|
32
|
23
|
29
|
35
|
37
|
28
|
12
|
21
|
37
|
30
|
|
2024/09
|
23
|
29
|
26
|
24
|
20
|
12
|
13
|
15
|
13
|
20
|
34
|
37
|
28
|
25
|
16
|
20
|
20
|
18
|
21
|
23
|
13
|
13
|
12
|
13
|
23
|
33
|
26
|
24
|
24
|
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