Air Quality
Excellent
No health implications.
21
PM2.5
22
PM10
77
O3
0.4
CO
5
SO2
16
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
14 May
64
Good
Thu
15 May
81
Good
Fri
16 May
87
Good
Sat
17 May
67
Good
Sun
18 May
69
Good
Mon
19 May
64
Good
Tue
20 May
37
Excellent
Air quality in the last 12 months (Longcheng)
|
2025/02
|
89
|
85
|
40
|
25
|
30
|
66
|
53
|
30
|
52
|
67
|
90
|
57
|
79
|
69
|
73
|
37
|
27
|
26
|
41
|
41
|
31
|
40
|
36
|
53
|
58
|
61
|
87
|
127
|
|||
|
2025/01
|
53
|
40
|
49
|
76
|
85
|
57
|
39
|
37
|
27
|
69
|
77
|
80
|
68
|
39
|
35
|
50
|
61
|
64
|
56
|
76
|
70
|
69
|
107
|
139
|
134
|
118
|
31
|
89
|
285
|
80
|
67
|
|
2024/12
|
72
|
29
|
40
|
34
|
37
|
30
|
32
|
44
|
65
|
60
|
44
|
76
|
64
|
38
|
39
|
53
|
30
|
44
|
60
|
47
|
37
|
38
|
57
|
81
|
74
|
31
|
35
|
54
|
75
|
66
|
42
|
|
2024/11
|
63
|
52
|
57
|
29
|
39
|
43
|
89
|
147
|
85
|
73
|
42
|
48
|
57
|
64
|
55
|
33
|
32
|
33
|
53
|
68
|
53
|
46
|
56
|
111
|
71
|
18
|
27
|
41
|
42
|
54
|
|
|
2024/10
|
24
|
31
|
33
|
43
|
63
|
32
|
34
|
37
|
59
|
38
|
49
|
43
|
54
|
62
|
28
|
41
|
72
|
61
|
28
|
40
|
36
|
29
|
44
|
50
|
83
|
64
|
35
|
48
|
59
|
33
|
57
|
|
2024/09
|
29
|
28
|
29
|
34
|
23
|
35
|
24
|
27
|
42
|
25
|
45
|
40
|
44
|
16
|
34
|
35
|
31
|
39
|
48
|
14
|
22
|
34
|
31
|
42
|
35
|
37
|
45
|
55
|
39
|
20
|
|
|
2024/08
|
29
|
24
|
34
|
21
|
27
|
31
|
36
|
46
|
49
|
27
|
47
|
27
|
16
|
26
|
30
|
39
|
44
|
38
|
29
|
12
|
21
|
27
|
26
|
26
|
32
|
33
|
32
|
32
|
34
|
41
|
31
|
|
2024/07
|
46
|
55
|
35
|
36
|
48
|
64
|
32
|
56
|
58
|
66
|
69
|
76
|
53
|
43
|
35
|
29
|
40
|
38
|
45
|
41
|
53
|
37
|
33
|
30
|
20
|
19
|
24
|
29
|
36
|
43
|
27
|
|
2024/06
|
32
|
37
|
38
|
47
|
43
|
45
|
52
|
29
|
55
|
44
|
54
|
60
|
40
|
29
|
21
|
35
|
46
|
58
|
49
|
27
|
32
|
110
|
80
|
19
|
27
|
37
|
62
|
49
|
35
|
35
|
|
|
2024/05
|
42
|
49
|
54
|
50
|
60
|
64
|
56
|
59
|
68
|
74
|
79
|
42
|
42
|
50
|
35
|
46
|
61
|
58
|
31
|
28
|
43
|
65
|
52
|
33
|
44
|
47
|
28
|
43
|
54
|
44
|
19
|
|
2024/04
|
49
|
56
|
35
|
36
|
69
|
69
|
63
|
58
|
50
|
63
|
88
|
120
|
68
|
39
|
119
|
44
|
57
|
63
|
35
|
49
|
59
|
55
|
27
|
25
|
74
|
60
|
35
|
16
|
26
|
40
|
|
|
2024/03
|
30
|
54
|
41
|
63
|
42
|
40
|
53
|
31
|
60
|
121
|
93
|
48
|
62
|
62
|
50
|
178
|
71
|
53
|
24
|
24
|
66
|
65
|
71
|
26
|
38
|
72
|
103
|
228
|
80
|
57
|
58
|
|
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