Air Quality
Excellent
No health implications.
12
PM2.5
26
PM10
54
O3
0.6
CO
5
SO2
16
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
17 Jun
40
Excellent
Wed
18 Jun
38
Excellent
Thu
19 Jun
39
Excellent
Fri
20 Jun
41
Excellent
Sat
21 Jun
45
Excellent
Sun
22 Jun
42
Excellent
Mon
23 Jun
20
Excellent
Air quality in the last 12 months (Mashan)
|
2025/05
|
32
|
48
|
47
|
34
|
37
|
27
|
36
|
47
|
24
|
31
|
25
|
42
|
47
|
38
|
21
|
19
|
25
|
19
|
21
|
26
|
26
|
27
|
19
|
28
|
38
|
32
|
46
|
43
|
14
|
29
|
35
|
|
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
|
|
|
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