Air Quality
Excellent
No health implications.
8
PM2.5
13
PM10
31
O3
0.5
CO
7
SO2
12
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
26 Apr
49
Excellent
Sun
27 Apr
59
Good
Mon
28 Apr
55
Good
Tue
29 Apr
66
Good
Wed
30 Apr
66
Good
Thu
1 May
68
Good
Fri
2 May
19
Excellent
Air quality in the last 12 months (Longmen)
|
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
|
|
|
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
|
|
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