Air Quality
Excellent
No health implications.
10
PM2.5
22
PM10
45
O3
0.3
CO
15
SO2
12
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
17 Dec
60
Good
Thu
18 Dec
81
Good
Fri
19 Dec
61
Good
Sat
20 Dec
64
Good
Sun
21 Dec
62
Good
Mon
22 Dec
25
Excellent
Tue
23 Dec
45
Excellent
Air quality in the last 12 months (Mashan)
|
2025/11
|
75
|
73
|
38
|
54
|
110
|
86
|
33
|
54
|
38
|
25
|
42
|
52
|
58
|
54
|
71
|
73
|
39
|
50
|
57
|
47
|
95
|
85
|
64
|
121
|
38
|
64
|
75
|
57
|
57
|
48
|
|
|
2025/10
|
25
|
38
|
44
|
35
|
22
|
25
|
33
|
36
|
32
|
39
|
41
|
36
|
45
|
52
|
51
|
48
|
51
|
28
|
20
|
25
|
32
|
43
|
55
|
53
|
105
|
120
|
72
|
53
|
146
|
44
|
52
|
|
2025/09
|
33
|
22
|
30
|
36
|
36
|
24
|
21
|
22
|
23
|
21
|
24
|
32
|
42
|
37
|
22
|
24
|
17
|
17
|
21
|
29
|
24
|
25
|
31
|
31
|
19
|
17
|
26
|
34
|
34
|
42
|
|
|
2025/08
|
25
|
20
|
23
|
14
|
17
|
18
|
15
|
16
|
21
|
17
|
22
|
37
|
36
|
15
|
25
|
19
|
17
|
20
|
22
|
19
|
23
|
13
|
21
|
20
|
19
|
13
|
20
|
25
|
16
|
23
|
38
|
|
2025/07
|
22
|
17
|
16
|
23
|
26
|
15
|
19
|
26
|
25
|
21
|
24
|
20
|
18
|
17
|
18
|
16
|
18
|
20
|
16
|
19
|
16
|
18
|
21
|
20
|
19
|
15
|
20
|
19
|
20
|
14
|
15
|
|
2025/06
|
48
|
28
|
19
|
15
|
20
|
21
|
18
|
25
|
27
|
18
|
15
|
20
|
28
|
28
|
20
|
21
|
17
|
25
|
21
|
20
|
14
|
15
|
26
|
36
|
42
|
43
|
35
|
45
|
23
|
26
|
|
|
2025/05
|
35
|
27
|
26
|
24
|
23
|
32
|
35
|
34
|
34
|
19
|
39
|
48
|
47
|
35
|
19
|
33
|
32
|
18
|
24
|
26
|
32
|
21
|
20
|
28
|
19
|
23
|
30
|
34
|
41
|
49
|
49
|
|
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
|
|
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