Air Quality
Excellent
No health implications.
24
PM2.5
49
PM10
141
O3
0.6
CO
6
SO2
11
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
29 May
90
Good
Tue
30 May
90
Good
Wed
31 May
79
Good
Thu
1 Jun
72
Good
Fri
2 Jun
69
Good
Sat
3 Jun
64
Good
Sun
4 Jun
65
Good
Air quality in the last 12 months (Longmen)
|
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
|
|
2023/02
|
38
|
34
|
56
|
68
|
29
|
19
|
30
|
24
|
27
|
27
|
21
|
25
|
23
|
16
|
26
|
34
|
40
|
41
|
46
|
55
|
58
|
49
|
46
|
52
|
38
|
54
|
54
|
49
|
|||
|
2023/01
|
41
|
43
|
42
|
38
|
38
|
38
|
38
|
39
|
22
|
14
|
17
|
18
|
17
|
20
|
15
|
17
|
37
|
35
|
36
|
41
|
48
|
74
|
88
|
44
|
60
|
50
|
48
|
56
|
46
|
41
|
39
|
|
2022/12
|
9
|
13
|
22
|
18
|
13
|
15
|
18
|
28
|
33
|
43
|
49
|
59
|
65
|
34
|
26
|
19
|
44
|
28
|
31
|
37
|
35
|
37
|
45
|
33
|
30
|
38
|
45
|
65
|
80
|
40
|
29
|
|
2022/11
|
33
|
21
|
14
|
14
|
18
|
16
|
18
|
23
|
25
|
33
|
43
|
52
|
44
|
49
|
64
|
51
|
44
|
38
|
40
|
27
|
39
|
25
|
11
|
10
|
11
|
14
|
23
|
22
|
27
|
14
|
|
|
2022/10
|
24
|
22
|
21
|
33
|
36
|
29
|
34
|
24
|
32
|
30
|
35
|
36
|
38
|
40
|
42
|
41
|
44
|
57
|
41
|
42
|
42
|
43
|
40
|
57
|
53
|
50
|
53
|
46
|
33
|
29
|
40
|
|
2022/09
|
29
|
25
|
35
|
31
|
39
|
45
|
34
|
26
|
30
|
49
|
51
|
46
|
49
|
45
|
47
|
50
|
55
|
71
|
56
|
49
|
42
|
48
|
49
|
53
|
54
|
54
|
45
|
34
|
33
|
24
|
|
|
2022/08
|
51
|
38
|
30
|
15
|
16
|
17
|
21
|
20
|
15
|
12
|
15
|
18
|
25
|
34
|
29
|
22
|
16
|
19
|
17
|
15
|
22
|
27
|
39
|
27
|
14
|
20
|
31
|
33
|
34
|
37
|
28
|
|
2022/07
|
15
|
13
|
17
|
18
|
23
|
17
|
17
|
19
|
20
|
22
|
29
|
28
|
32
|
42
|
30
|
34
|
32
|
27
|
23
|
21
|
30
|
38
|
44
|
48
|
62
|
51
|
45
|
51
|
54
|
38
|
49
|
|
2022/06
|
25
|
28
|
20
|
24
|
24
|
20
|
16
|
13
|
15
|
17
|
16
|
16
|
26
|
11
|
18
|
15
|
16
|
21
|
22
|
20
|
25
|
25
|
27
|
27
|
29
|
23
|
21
|
25
|
20
|
14
|
|
|
2022/05
|
17
|
24
|
38
|
42
|
50
|
59
|
38
|
29
|
38
|
23
|
12
|
9
|
12
|
12
|
17
|
24
|
26
|
34
|
41
|
63
|
50
|
34
|
32
|
22
|
17
|
19
|
20
|
22
|
23
|
23
|
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