Air Quality
Excellent
No health implications.
17
PM2.5
32
PM10
44
O3
0.3
CO
6
SO2
15
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
21 May
57
Good
Wed
22 May
58
Good
Thu
23 May
60
Good
Fri
24 May
60
Good
Sat
25 May
56
Good
Sun
26 May
59
Good
Air quality in the last 12 months (Mashan)
|
2024/02
|
34
|
55
|
58
|
61
|
61
|
81
|
68
|
57
|
104
|
199
|
78
|
56
|
64
|
44
|
28
|
38
|
57
|
46
|
40
|
27
|
29
|
27
|
34
|
66
|
73
|
44
|
43
|
55
|
50
|
||
|
2024/01
|
71
|
89
|
120
|
122
|
93
|
73
|
54
|
47
|
56
|
55
|
83
|
70
|
60
|
55
|
25
|
40
|
68
|
55
|
60
|
59
|
39
|
37
|
37
|
62
|
46
|
77
|
113
|
125
|
96
|
80
|
56
|
|
2023/12
|
42
|
59
|
63
|
46
|
83
|
58
|
32
|
49
|
42
|
28
|
35
|
52
|
42
|
54
|
52
|
29
|
28
|
44
|
71
|
42
|
39
|
44
|
56
|
92
|
73
|
71
|
60
|
79
|
94
|
86
|
44
|
|
2023/11
|
90
|
57
|
38
|
32
|
34
|
39
|
33
|
47
|
55
|
38
|
31
|
32
|
31
|
49
|
78
|
91
|
37
|
27
|
41
|
35
|
49
|
62
|
22
|
23
|
27
|
45
|
87
|
54
|
40
|
22
|
|
|
2023/10
|
18
|
24
|
32
|
22
|
19
|
25
|
31
|
39
|
44
|
40
|
38
|
40
|
43
|
49
|
49
|
34
|
38
|
51
|
19
|
18
|
20
|
30
|
45
|
63
|
64
|
44
|
43
|
45
|
61
|
91
|
121
|
|
2023/09
|
21
|
22
|
28
|
42
|
23
|
26
|
38
|
43
|
37
|
37
|
26
|
18
|
23
|
28
|
33
|
34
|
42
|
34
|
18
|
21
|
28
|
23
|
21
|
37
|
39
|
37
|
30
|
22
|
20
|
22
|
|
|
2023/08
|
26
|
21
|
16
|
12
|
12
|
16
|
15
|
10
|
18
|
20
|
14
|
16
|
15
|
13
|
22
|
26
|
28
|
32
|
23
|
33
|
28
|
20
|
32
|
26
|
30
|
19
|
25
|
26
|
17
|
15
|
21
|
|
2023/07
|
29
|
29
|
29
|
25
|
24
|
22
|
28
|
31
|
33
|
24
|
23
|
29
|
39
|
24
|
15
|
15
|
16
|
19
|
24
|
27
|
34
|
40
|
18
|
21
|
26
|
36
|
35
|
28
|
23
|
22
|
23
|
|
2023/06
|
27
|
19
|
17
|
19
|
20
|
22
|
24
|
26
|
26
|
26
|
25
|
30
|
32
|
33
|
37
|
59
|
34
|
29
|
30
|
37
|
21
|
21
|
30
|
37
|
42
|
58
|
24
|
20
|
32
|
31
|
|
|
2023/05
|
26
|
33
|
58
|
52
|
36
|
35
|
39
|
46
|
28
|
29
|
40
|
49
|
38
|
36
|
32
|
39
|
25
|
32
|
34
|
38
|
197
|
27
|
41
|
37
|
41
|
34
|
28
|
29
|
25
|
23
|
31
|
|
2023/04
|
65
|
124
|
127
|
74
|
119
|
90
|
101
|
76
|
86
|
111
|
213
|
262
|
56
|
80
|
119
|
35
|
44
|
42
|
41
|
156
|
57
|
31
|
36
|
46
|
62
|
29
|
42
|
47
|
38
|
23
|
|
|
2023/03
|
33
|
32
|
37
|
32
|
43
|
80
|
83
|
40
|
44
|
57
|
49
|
43
|
33
|
49
|
46
|
33
|
32
|
34
|
37
|
56
|
71
|
177
|
252
|
60
|
57
|
58
|
59
|
65
|
62
|
78
|
86
|
|
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