Air Quality
Excellent
No health implications.
5
PM2.5
10
PM10
31
O3
0.6
CO
4
SO2
6
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
3 Feb
49
Excellent
Tue
4 Feb
58
Good
Wed
5 Feb
61
Good
Thu
6 Feb
58
Good
Fri
7 Feb
55
Good
Sat
8 Feb
27
Excellent
Sun
9 Feb
17
Excellent
Air quality in the last 12 months (Longmen)
|
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
|
|
|
2024/08
|
23
|
31
|
33
|
40
|
36
|
34
|
34
|
48
|
40
|
32
|
34
|
29
|
18
|
24
|
21
|
25
|
17
|
17
|
18
|
27
|
11
|
20
|
23
|
24
|
25
|
30
|
45
|
39
|
29
|
28
|
20
|
|
2024/07
|
21
|
19
|
22
|
21
|
23
|
19
|
18
|
21
|
24
|
19
|
18
|
17
|
17
|
20
|
15
|
17
|
14
|
16
|
18
|
18
|
18
|
20
|
26
|
37
|
36
|
27
|
20
|
10
|
12
|
14
|
14
|
|
2024/06
|
10
|
12
|
22
|
12
|
14
|
11
|
18
|
13
|
15
|
17
|
21
|
27
|
23
|
23
|
32
|
20
|
29
|
20
|
24
|
20
|
24
|
38
|
23
|
14
|
16
|
20
|
17
|
19
|
19
|
22
|
|
|
2024/05
|
16
|
20
|
24
|
23
|
18
|
37
|
27
|
29
|
40
|
42
|
36
|
22
|
31
|
37
|
37
|
40
|
47
|
32
|
28
|
13
|
7
|
12
|
16
|
13
|
17
|
21
|
21
|
17
|
20
|
25
|
18
|
|
2024/04
|
49
|
56
|
31
|
23
|
16
|
17
|
12
|
15
|
20
|
29
|
46
|
56
|
60
|
37
|
44
|
44
|
27
|
19
|
20
|
18
|
12
|
27
|
25
|
22
|
15
|
20
|
22
|
12
|
21
|
21
|
|
|
2024/03
|
17
|
18
|
25
|
36
|
40
|
24
|
27
|
33
|
38
|
9
|
12
|
21
|
43
|
47
|
21
|
37
|
44
|
49
|
22
|
63
|
53
|
50
|
39
|
34
|
28
|
29
|
35
|
37
|
41
|
42
|
33
|
|
2024/02
|
32
|
24
|
23
|
22
|
10
|
19
|
13
|
15
|
30
|
66
|
49
|
44
|
45
|
37
|
35
|
26
|
29
|
26
|
27
|
21
|
27
|
21
|
15
|
13
|
13
|
17
|
16
|
32
|
28
|
||
|
2024/01
|
68
|
76
|
34
|
30
|
44
|
51
|
47
|
63
|
47
|
25
|
38
|
46
|
52
|
45
|
43
|
48
|
47
|
44
|
42
|
30
|
18
|
16
|
28
|
29
|
31
|
36
|
42
|
45
|
48
|
42
|
44
|
|
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