Air Quality
Excellent
No health implications.
4
PM2.5
21
PM10
33
O3
0.3
CO
8
SO2
9
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
18 May
43
Excellent
Mon
19 May
46
Excellent
Tue
20 May
43
Excellent
Wed
21 May
44
Excellent
Thu
22 May
47
Excellent
Fri
23 May
50
Excellent
Sat
24 May
20
Excellent
Air quality in the last 12 months (Liannan)
|
2025/02
|
33
|
20
|
20
|
44
|
58
|
55
|
31
|
63
|
44
|
58
|
69
|
66
|
76
|
86
|
93
|
44
|
35
|
30
|
45
|
37
|
26
|
28
|
17
|
53
|
83
|
96
|
75
|
55
|
|||
|
2025/01
|
85
|
81
|
90
|
106
|
128
|
102
|
85
|
89
|
75
|
46
|
54
|
58
|
58
|
59
|
76
|
66
|
60
|
59
|
67
|
71
|
68
|
68
|
72
|
108
|
80
|
24
|
43
|
62
|
172
|
73
|
59
|
|
2024/12
|
62
|
60
|
62
|
85
|
99
|
51
|
27
|
41
|
84
|
88
|
34
|
52
|
56
|
72
|
52
|
52
|
59
|
58
|
67
|
76
|
84
|
89
|
86
|
88
|
92
|
108
|
106
|
109
|
77
|
90
|
88
|
|
2024/11
|
50
|
68
|
69
|
69
|
63
|
67
|
48
|
49
|
59
|
63
|
60
|
57
|
60
|
62
|
36
|
42
|
33
|
15
|
16
|
22
|
29
|
35
|
43
|
51
|
50
|
25
|
37
|
47
|
49
|
59
|
|
|
2024/10
|
39
|
39
|
51
|
49
|
48
|
54
|
72
|
58
|
48
|
44
|
53
|
51
|
60
|
81
|
41
|
37
|
42
|
44
|
31
|
20
|
29
|
30
|
26
|
36
|
42
|
55
|
29
|
25
|
46
|
50
|
50
|
|
2024/09
|
31
|
31
|
30
|
33
|
37
|
29
|
20
|
21
|
22
|
29
|
34
|
44
|
44
|
38
|
31
|
29
|
38
|
40
|
43
|
37
|
28
|
27
|
35
|
38
|
40
|
38
|
37
|
37
|
43
|
41
|
|
|
2024/08
|
21
|
27
|
32
|
38
|
35
|
30
|
37
|
36
|
35
|
33
|
34
|
23
|
19
|
24
|
20
|
22
|
23
|
25
|
31
|
30
|
22
|
26
|
28
|
33
|
33
|
31
|
39
|
31
|
35
|
40
|
39
|
|
2024/07
|
29
|
28
|
21
|
26
|
28
|
29
|
28
|
26
|
27
|
25
|
28
|
25
|
23
|
28
|
26
|
23
|
21
|
23
|
23
|
26
|
21
|
22
|
22
|
32
|
43
|
42
|
25
|
14
|
14
|
18
|
18
|
|
2024/06
|
19
|
17
|
35
|
23
|
16
|
25
|
33
|
32
|
30
|
24
|
24
|
28
|
27
|
24
|
15
|
20
|
22
|
19
|
24
|
29
|
23
|
28
|
22
|
18
|
21
|
28
|
28
|
25
|
24
|
27
|
|
|
2024/05
|
14
|
26
|
26
|
21
|
19
|
36
|
34
|
44
|
52
|
54
|
43
|
30
|
58
|
54
|
54
|
52
|
54
|
35
|
18
|
20
|
26
|
32
|
32
|
25
|
28
|
26
|
23
|
32
|
27
|
35
|
21
|
|
2024/04
|
52
|
50
|
41
|
30
|
14
|
13
|
16
|
21
|
38
|
46
|
58
|
62
|
59
|
53
|
56
|
53
|
36
|
29
|
23
|
15
|
18
|
33
|
33
|
40
|
43
|
26
|
31
|
35
|
29
|
23
|
|
|
2024/03
|
64
|
51
|
48
|
24
|
38
|
64
|
75
|
55
|
51
|
38
|
23
|
43
|
50
|
32
|
31
|
40
|
56
|
43
|
26
|
61
|
73
|
48
|
39
|
42
|
38
|
27
|
55
|
37
|
33
|
51
|
45
|
|
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