Air Quality
Excellent
No health implications.
15
PM2.5
23
PM10
65
O3
0.5
CO
5
SO2
6
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
20 May
40
Excellent
Wed
21 May
35
Excellent
Thu
22 May
40
Excellent
Fri
23 May
36
Excellent
Sat
24 May
35
Excellent
Sun
25 May
29
Excellent
Mon
26 May
40
Excellent
Air quality in the last 12 months (Mashan)
|
2025/04
|
39
|
55
|
65
|
51
|
75
|
94
|
92
|
80
|
73
|
66
|
53
|
48
|
138
|
143
|
104
|
95
|
82
|
67
|
54
|
45
|
41
|
45
|
30
|
32
|
28
|
34
|
42
|
29
|
47
|
44
|
|
|
2025/03
|
45
|
44
|
61
|
51
|
29
|
18
|
33
|
44
|
54
|
47
|
50
|
39
|
34
|
39
|
17
|
22
|
50
|
30
|
37
|
53
|
61
|
71
|
69
|
75
|
85
|
63
|
60
|
75
|
30
|
14
|
24
|
|
2025/02
|
39
|
18
|
17
|
47
|
85
|
32
|
13
|
42
|
56
|
70
|
114
|
79
|
36
|
83
|
46
|
35
|
43
|
27
|
35
|
27
|
15
|
21
|
12
|
29
|
55
|
24
|
39
|
56
|
|||
|
2025/01
|
125
|
116
|
88
|
111
|
83
|
102
|
121
|
91
|
59
|
32
|
48
|
73
|
92
|
108
|
90
|
73
|
85
|
101
|
97
|
104
|
106
|
105
|
127
|
87
|
46
|
12
|
39
|
50
|
138
|
87
|
59
|
|
2024/12
|
82
|
92
|
87
|
85
|
74
|
43
|
19
|
29
|
56
|
82
|
33
|
30
|
39
|
50
|
44
|
56
|
87
|
74
|
65
|
85
|
98
|
93
|
95
|
96
|
101
|
89
|
80
|
58
|
92
|
130
|
109
|
|
2024/11
|
45
|
46
|
58
|
66
|
58
|
61
|
61
|
55
|
57
|
57
|
61
|
63
|
70
|
72
|
63
|
59
|
57
|
35
|
26
|
23
|
27
|
27
|
38
|
52
|
66
|
18
|
32
|
34
|
43
|
59
|
|
|
2024/10
|
20
|
22
|
37
|
53
|
55
|
55
|
55
|
49
|
39
|
45
|
51
|
57
|
63
|
42
|
17
|
33
|
33
|
28
|
28
|
25
|
40
|
42
|
24
|
34
|
34
|
36
|
30
|
27
|
37
|
47
|
50
|
|
2024/09
|
28
|
35
|
29
|
32
|
41
|
37
|
17
|
18
|
21
|
22
|
24
|
33
|
42
|
44
|
45
|
30
|
25
|
31
|
33
|
38
|
31
|
24
|
29
|
38
|
50
|
52
|
51
|
52
|
35
|
36
|
|
|
2024/08
|
17
|
19
|
21
|
24
|
30
|
32
|
34
|
30
|
29
|
32
|
21
|
23
|
20
|
25
|
27
|
31
|
27
|
25
|
31
|
28
|
26
|
23
|
25
|
27
|
26
|
30
|
32
|
38
|
35
|
35
|
36
|
|
2024/07
|
29
|
14
|
16
|
25
|
20
|
18
|
19
|
20
|
23
|
25
|
24
|
24
|
25
|
23
|
28
|
29
|
24
|
19
|
19
|
24
|
33
|
33
|
25
|
19
|
26
|
38
|
40
|
26
|
22
|
15
|
14
|
|
2024/06
|
33
|
41
|
28
|
19
|
18
|
31
|
32
|
28
|
17
|
15
|
26
|
28
|
32
|
23
|
30
|
30
|
31
|
16
|
30
|
27
|
31
|
26
|
24
|
16
|
13
|
13
|
20
|
18
|
20
|
22
|
|
|
2024/05
|
18
|
25
|
28
|
30
|
26
|
33
|
40
|
41
|
28
|
29
|
37
|
22
|
48
|
55
|
49
|
50
|
51
|
44
|
16
|
24
|
30
|
30
|
41
|
49
|
41
|
20
|
31
|
24
|
38
|
24
|
19
|
|
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