Air Quality
Excellent
No health implications.
4
PM2.5
17
PM10
73
O3
0.2
CO
8
SO2
7
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
22 May
48
Excellent
Fri
23 May
53
Good
Sat
24 May
48
Excellent
Sun
25 May
48
Excellent
Mon
26 May
47
Excellent
Tue
27 May
86
Good
Wed
28 May
19
Excellent
Air quality in the last 12 months (Mashan)
|
2025/04
|
64
|
53
|
44
|
51
|
52
|
22
|
27
|
53
|
59
|
73
|
120
|
91
|
42
|
30
|
26
|
35
|
56
|
47
|
29
|
56
|
80
|
31
|
31
|
33
|
36
|
19
|
34
|
49
|
48
|
41
|
|
|
2025/03
|
24
|
24
|
26
|
39
|
51
|
43
|
37
|
60
|
70
|
68
|
76
|
72
|
24
|
26
|
23
|
25
|
32
|
34
|
42
|
64
|
76
|
15
|
40
|
49
|
68
|
69
|
32
|
18
|
23
|
25
|
37
|
|
2025/02
|
48
|
78
|
65
|
44
|
32
|
24
|
31
|
30
|
31
|
43
|
56
|
62
|
29
|
34
|
48
|
48
|
32
|
24
|
28
|
32
|
36
|
29
|
26
|
30
|
48
|
29
|
49
|
65
|
|||
|
2025/01
|
65
|
59
|
50
|
48
|
82
|
75
|
65
|
56
|
36
|
42
|
63
|
75
|
74
|
59
|
42
|
44
|
56
|
88
|
92
|
100
|
130
|
130
|
100
|
72
|
72
|
85
|
60
|
50
|
50
|
43
|
36
|
|
2024/12
|
39
|
31
|
24
|
19
|
19
|
26
|
24
|
31
|
46
|
49
|
32
|
39
|
39
|
43
|
28
|
31
|
38
|
33
|
37
|
59
|
53
|
49
|
42
|
36
|
49
|
31
|
28
|
34
|
44
|
69
|
67
|
|
2024/11
|
59
|
53
|
52
|
40
|
44
|
31
|
55
|
72
|
85
|
62
|
66
|
108
|
124
|
87
|
79
|
64
|
23
|
23
|
42
|
58
|
64
|
39
|
35
|
46
|
58
|
33
|
28
|
44
|
32
|
27
|
|
|
2024/10
|
17
|
25
|
32
|
43
|
46
|
45
|
31
|
47
|
51
|
44
|
30
|
33
|
45
|
54
|
24
|
34
|
48
|
48
|
31
|
35
|
39
|
35
|
37
|
43
|
61
|
48
|
32
|
46
|
53
|
52
|
63
|
|
2024/09
|
25
|
19
|
28
|
39
|
15
|
23
|
23
|
32
|
39
|
20
|
27
|
40
|
28
|
29
|
23
|
40
|
29
|
31
|
36
|
22
|
26
|
29
|
39
|
37
|
31
|
22
|
36
|
40
|
43
|
31
|
|
|
2024/08
|
17
|
17
|
17
|
20
|
19
|
18
|
30
|
31
|
30
|
37
|
16
|
17
|
23
|
27
|
35
|
34
|
33
|
39
|
17
|
25
|
25
|
24
|
25
|
35
|
35
|
27
|
25
|
31
|
38
|
30
|
21
|
|
2024/07
|
69
|
65
|
54
|
26
|
28
|
49
|
47
|
55
|
57
|
46
|
67
|
51
|
39
|
48
|
54
|
54
|
39
|
27
|
31
|
42
|
37
|
28
|
33
|
26
|
27
|
15
|
15
|
21
|
23
|
19
|
29
|
|
2024/06
|
14
|
19
|
29
|
21
|
27
|
31
|
35
|
28
|
18
|
21
|
38
|
21
|
22
|
13
|
17
|
14
|
19
|
21
|
34
|
31
|
15
|
13
|
12
|
12
|
17
|
22
|
25
|
51
|
49
|
49
|
|
|
2024/05
|
47
|
56
|
57
|
58
|
69
|
63
|
41
|
41
|
34
|
38
|
31
|
24
|
28
|
31
|
30
|
24
|
34
|
49
|
27
|
22
|
24
|
43
|
32
|
22
|
23
|
23
|
15
|
22
|
19
|
20
|
15
|
|
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