Air Quality
Excellent
No health implications.
10
PM2.5
18
PM10
55
O3
0.9
CO
3
SO2
6
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
16 May
49
Excellent
Sat
17 May
46
Excellent
Sun
18 May
49
Excellent
Mon
19 May
43
Excellent
Tue
20 May
42
Excellent
Wed
21 May
43
Excellent
Thu
22 May
23
Excellent
Air quality in the last 12 months (Yihuang)
|
2025/02
|
38
|
27
|
49
|
56
|
48
|
54
|
61
|
51
|
36
|
48
|
63
|
71
|
79
|
69
|
49
|
42
|
53
|
48
|
42
|
24
|
28
|
23
|
26
|
41
|
65
|
66
|
51
|
39
|
|||
|
2025/01
|
110
|
84
|
96
|
98
|
100
|
94
|
67
|
61
|
59
|
46
|
50
|
55
|
59
|
58
|
71
|
56
|
53
|
64
|
64
|
70
|
68
|
64
|
61
|
101
|
54
|
26
|
56
|
82
|
138
|
70
|
52
|
|
2024/12
|
46
|
51
|
57
|
88
|
56
|
44
|
45
|
69
|
55
|
57
|
35
|
51
|
70
|
58
|
55
|
55
|
57
|
65
|
63
|
60
|
64
|
74
|
60
|
72
|
79
|
82
|
107
|
75
|
71
|
79
|
84
|
|
2024/11
|
30
|
38
|
46
|
54
|
59
|
51
|
47
|
47
|
53
|
56
|
45
|
47
|
52
|
52
|
31
|
36
|
38
|
27
|
35
|
44
|
45
|
34
|
51
|
55
|
41
|
35
|
40
|
46
|
47
|
47
|
|
|
2024/10
|
39
|
38
|
39
|
34
|
38
|
37
|
31
|
21
|
28
|
42
|
56
|
53
|
52
|
74
|
56
|
29
|
36
|
41
|
29
|
29
|
42
|
42
|
37
|
48
|
49
|
52
|
21
|
22
|
48
|
51
|
42
|
|
2024/09
|
44
|
47
|
51
|
43
|
41
|
33
|
24
|
26
|
25
|
30
|
37
|
27
|
32
|
37
|
36
|
34
|
34
|
36
|
35
|
30
|
28
|
30
|
31
|
28
|
37
|
39
|
42
|
33
|
37
|
34
|
|
|
2024/08
|
21
|
27
|
31
|
39
|
29
|
34
|
32
|
30
|
36
|
39
|
35
|
24
|
24
|
25
|
32
|
32
|
27
|
22
|
23
|
31
|
24
|
24
|
31
|
37
|
34
|
33
|
36
|
24
|
30
|
43
|
44
|
|
2024/07
|
25
|
24
|
23
|
23
|
27
|
22
|
22
|
21
|
28
|
29
|
30
|
27
|
24
|
23
|
27
|
30
|
20
|
21
|
20
|
21
|
23
|
25
|
32
|
39
|
33
|
20
|
17
|
19
|
19
|
21
|
21
|
|
2024/06
|
21
|
22
|
26
|
33
|
29
|
32
|
34
|
38
|
37
|
30
|
21
|
24
|
24
|
21
|
22
|
21
|
21
|
28
|
34
|
27
|
26
|
28
|
33
|
25
|
18
|
23
|
27
|
29
|
22
|
25
|
|
|
2024/05
|
24
|
36
|
43
|
28
|
24
|
29
|
42
|
51
|
53
|
51
|
46
|
48
|
57
|
49
|
47
|
60
|
52
|
50
|
49
|
34
|
25
|
27
|
32
|
24
|
21
|
25
|
27
|
27
|
34
|
41
|
26
|
|
2024/04
|
29
|
38
|
30
|
33
|
28
|
31
|
34
|
46
|
34
|
40
|
49
|
51
|
50
|
49
|
52
|
44
|
24
|
28
|
23
|
25
|
32
|
36
|
41
|
46
|
37
|
37
|
37
|
31
|
33
|
20
|
|
|
2024/03
|
33
|
41
|
35
|
46
|
35
|
38
|
53
|
57
|
56
|
60
|
54
|
44
|
55
|
43
|
31
|
24
|
38
|
31
|
42
|
64
|
61
|
50
|
42
|
40
|
33
|
27
|
38
|
31
|
38
|
42
|
32
|
|
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