Air Quality
Excellent
No health implications.
21
PM2.5
30
PM10
119
O3
0.5
CO
8
SO2
22
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
14 May
95
Good
Thu
15 May
94
Good
Fri
16 May
100
Good
Sat
17 May
59
Good
Sun
18 May
56
Good
Mon
19 May
49
Excellent
Tue
20 May
27
Excellent
Air quality in the last 12 months (Liuhe)
|
2025/02
|
87
|
88
|
47
|
57
|
62
|
58
|
42
|
33
|
51
|
59
|
57
|
74
|
91
|
71
|
72
|
50
|
35
|
46
|
54
|
52
|
51
|
51
|
55
|
51
|
64
|
53
|
58
|
72
|
|||
|
2025/01
|
56
|
40
|
50
|
57
|
79
|
69
|
56
|
36
|
42
|
52
|
64
|
75
|
75
|
51
|
42
|
43
|
52
|
57
|
61
|
70
|
76
|
76
|
74
|
70
|
68
|
76
|
56
|
67
|
74
|
66
|
82
|
|
2024/12
|
48
|
26
|
38
|
33
|
34
|
35
|
44
|
52
|
59
|
64
|
49
|
52
|
58
|
52
|
32
|
36
|
45
|
48
|
57
|
63
|
46
|
51
|
59
|
52
|
60
|
43
|
45
|
50
|
49
|
54
|
41
|
|
2024/11
|
74
|
112
|
78
|
26
|
27
|
27
|
35
|
50
|
47
|
34
|
49
|
34
|
40
|
36
|
27
|
37
|
31
|
35
|
34
|
51
|
54
|
48
|
48
|
51
|
50
|
42
|
34
|
45
|
35
|
47
|
|
|
2024/10
|
15
|
22
|
28
|
31
|
32
|
50
|
26
|
38
|
36
|
35
|
35
|
46
|
47
|
36
|
17
|
33
|
57
|
53
|
26
|
35
|
24
|
36
|
34
|
46
|
55
|
71
|
47
|
34
|
55
|
57
|
62
|
|
2024/09
|
20
|
16
|
21
|
20
|
15
|
23
|
27
|
20
|
26
|
21
|
22
|
21
|
19
|
20
|
22
|
28
|
23
|
28
|
27
|
18
|
15
|
24
|
24
|
25
|
27
|
17
|
31
|
31
|
25
|
27
|
|
|
2024/08
|
14
|
18
|
18
|
21
|
14
|
15
|
23
|
30
|
29
|
27
|
22
|
21
|
22
|
24
|
29
|
25
|
28
|
30
|
23
|
24
|
16
|
15
|
16
|
27
|
30
|
25
|
24
|
21
|
22
|
26
|
25
|
|
2024/07
|
34
|
34
|
12
|
29
|
32
|
22
|
19
|
38
|
44
|
49
|
58
|
57
|
59
|
58
|
57
|
30
|
13
|
20
|
29
|
21
|
18
|
16
|
17
|
13
|
13
|
10
|
9
|
8
|
14
|
22
|
18
|
|
2024/06
|
23
|
16
|
25
|
27
|
29
|
23
|
24
|
19
|
19
|
26
|
28
|
25
|
22
|
18
|
15
|
22
|
30
|
29
|
43
|
29
|
31
|
32
|
32
|
16
|
16
|
24
|
33
|
32
|
20
|
23
|
|
|
2024/05
|
31
|
42
|
44
|
36
|
26
|
21
|
31
|
28
|
53
|
46
|
51
|
38
|
32
|
40
|
19
|
28
|
33
|
45
|
24
|
15
|
20
|
31
|
25
|
26
|
23
|
15
|
12
|
25
|
34
|
28
|
18
|
|
2024/04
|
51
|
55
|
59
|
69
|
65
|
62
|
72
|
84
|
68
|
113
|
39
|
41
|
35
|
38
|
75
|
137
|
86
|
55
|
72
|
128
|
70
|
40
|
44
|
32
|
42
|
49
|
47
|
24
|
25
|
30
|
|
|
2024/03
|
37
|
45
|
36
|
45
|
38
|
35
|
35
|
36
|
39
|
52
|
50
|
39
|
44
|
51
|
52
|
52
|
55
|
42
|
35
|
37
|
47
|
50
|
44
|
40
|
34
|
40
|
51
|
106
|
80
|
55
|
52
|
|
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