Air Quality
Excellent
No health implications.
10
PM2.5
15
PM10
29
O3
0.6
CO
4
SO2
23
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
26 Apr
38
Excellent
Sat
27 Apr
38
Excellent
Sun
28 Apr
34
Excellent
Mon
29 Apr
38
Excellent
Tue
30 Apr
32
Excellent
Wed
1 May
34
Excellent
Air quality in the last 12 months (Longmen)
|
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
|
|
2023/12
|
44
|
34
|
34
|
35
|
22
|
25
|
30
|
38
|
53
|
45
|
39
|
30
|
29
|
41
|
43
|
21
|
26
|
27
|
11
|
22
|
28
|
45
|
34
|
33
|
38
|
41
|
47
|
44
|
45
|
62
|
42
|
|
2023/11
|
36
|
42
|
50
|
52
|
42
|
32
|
31
|
49
|
50
|
41
|
13
|
12
|
15
|
27
|
31
|
29
|
53
|
56
|
55
|
54
|
49
|
57
|
58
|
50
|
64
|
49
|
54
|
45
|
49
|
40
|
|
|
2023/10
|
31
|
24
|
36
|
41
|
28
|
30
|
17
|
14
|
12
|
12
|
21
|
25
|
27
|
41
|
44
|
40
|
39
|
40
|
40
|
26
|
23
|
19
|
29
|
30
|
37
|
55
|
50
|
26
|
26
|
32
|
35
|
|
2023/09
|
19
|
18
|
22
|
32
|
29
|
12
|
13
|
18
|
19
|
21
|
19
|
18
|
18
|
15
|
11
|
15
|
19
|
29
|
32
|
35
|
44
|
34
|
35
|
30
|
28
|
29
|
31
|
32
|
29
|
27
|
|
|
2023/08
|
21
|
23
|
35
|
29
|
33
|
30
|
28
|
34
|
34
|
26
|
25
|
28
|
27
|
28
|
27
|
36
|
30
|
38
|
40
|
21
|
21
|
27
|
25
|
19
|
24
|
23
|
23
|
23
|
19
|
21
|
19
|
|
2023/07
|
24
|
20
|
17
|
17
|
26
|
27
|
24
|
34
|
24
|
29
|
27
|
25
|
27
|
35
|
41
|
24
|
14
|
22
|
14
|
24
|
36
|
30
|
24
|
22
|
33
|
28
|
20
|
18
|
24
|
18
|
20
|
|
2023/06
|
37
|
46
|
31
|
23
|
21
|
21
|
15
|
20
|
20
|
19
|
28
|
34
|
36
|
27
|
23
|
17
|
16
|
15
|
19
|
30
|
32
|
27
|
20
|
19
|
23
|
20
|
18
|
19
|
24
|
25
|
|
|
2023/05
|
65
|
44
|
31
|
23
|
25
|
22
|
21
|
31
|
37
|
43
|
29
|
18
|
32
|
39
|
43
|
42
|
25
|
41
|
35
|
48
|
29
|
38
|
26
|
31
|
39
|
26
|
33
|
33
|
43
|
43
|
38
|
|
2023/04
|
16
|
36
|
34
|
32
|
22
|
26
|
26
|
60
|
58
|
51
|
42
|
50
|
44
|
54
|
40
|
43
|
40
|
37
|
33
|
31
|
27
|
27
|
33
|
28
|
16
|
19
|
30
|
42
|
28
|
54
|
|
|
2023/03
|
55
|
58
|
74
|
54
|
51
|
60
|
60
|
55
|
54
|
53
|
55
|
54
|
78
|
74
|
59
|
58
|
51
|
52
|
41
|
39
|
38
|
37
|
37
|
20
|
19
|
14
|
15
|
16
|
13
|
18
|
19
|
|
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