Air Quality
Excellent
No health implications.
5
PM2.5
21
PM10
51
O3
0.6
CO
6
SO2
8
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
29 May
38
Excellent
Fri
30 May
40
Excellent
Sat
31 May
37
Excellent
Sun
1 Jun
40
Excellent
Mon
2 Jun
40
Excellent
Tue
3 Jun
41
Excellent
Wed
4 Jun
35
Excellent
Air quality in the last 12 months (Menghai)
|
2025/04
|
108
|
59
|
58
|
94
|
116
|
93
|
83
|
71
|
80
|
74
|
75
|
85
|
38
|
41
|
34
|
31
|
28
|
33
|
43
|
39
|
40
|
47
|
59
|
62
|
71
|
86
|
86
|
75
|
41
|
28
|
|
|
2025/03
|
49
|
65
|
61
|
76
|
85
|
88
|
73
|
56
|
52
|
53
|
66
|
71
|
78
|
77
|
84
|
106
|
110
|
54
|
24
|
36
|
58
|
70
|
74
|
66
|
69
|
77
|
89
|
121
|
132
|
114
|
138
|
|
2025/02
|
77
|
91
|
83
|
60
|
50
|
68
|
68
|
54
|
37
|
41
|
55
|
56
|
63
|
62
|
77
|
72
|
66
|
63
|
68
|
72
|
60
|
69
|
67
|
41
|
30
|
33
|
45
|
57
|
|||
|
2025/01
|
42
|
36
|
42
|
48
|
55
|
64
|
57
|
50
|
56
|
58
|
61
|
40
|
47
|
50
|
52
|
51
|
55
|
54
|
51
|
49
|
47
|
51
|
50
|
40
|
37
|
45
|
29
|
55
|
76
|
65
|
60
|
|
2024/12
|
31
|
34
|
36
|
37
|
36
|
39
|
41
|
41
|
44
|
43
|
43
|
48
|
42
|
40
|
26
|
29
|
34
|
34
|
39
|
44
|
41
|
44
|
41
|
49
|
48
|
47
|
46
|
50
|
42
|
42
|
42
|
|
2024/11
|
37
|
38
|
44
|
43
|
37
|
30
|
31
|
13
|
19
|
23
|
27
|
32
|
30
|
27
|
28
|
33
|
37
|
34
|
38
|
38
|
33
|
22
|
33
|
38
|
39
|
38
|
34
|
24
|
22
|
24
|
|
|
2024/10
|
18
|
11
|
16
|
21
|
23
|
29
|
32
|
32
|
30
|
27
|
26
|
25
|
30
|
36
|
33
|
34
|
27
|
38
|
40
|
36
|
31
|
29
|
30
|
34
|
33
|
37
|
38
|
41
|
48
|
46
|
43
|
|
2024/09
|
20
|
22
|
24
|
24
|
25
|
19
|
24
|
19
|
17
|
11
|
13
|
13
|
23
|
19
|
23
|
25
|
21
|
18
|
22
|
30
|
34
|
31
|
29
|
29
|
31
|
29
|
22
|
23
|
20
|
23
|
|
|
2024/08
|
10
|
12
|
18
|
19
|
18
|
14
|
14
|
22
|
18
|
16
|
17
|
19
|
16
|
18
|
18
|
22
|
18
|
15
|
15
|
14
|
15
|
11
|
14
|
13
|
14
|
16
|
15
|
18
|
18
|
20
|
17
|
|
2024/07
|
15
|
17
|
18
|
13
|
17
|
18
|
17
|
18
|
17
|
16
|
10
|
13
|
25
|
17
|
15
|
20
|
22
|
23
|
15
|
11
|
12
|
13
|
13
|
16
|
15
|
15
|
14
|
16
|
15
|
14
|
11
|
|
2024/06
|
33
|
22
|
24
|
27
|
33
|
21
|
18
|
20
|
26
|
28
|
29
|
17
|
19
|
18
|
25
|
23
|
37
|
27
|
24
|
25
|
24
|
22
|
22
|
19
|
16
|
17
|
13
|
17
|
21
|
15
|
|
|
2024/05
|
78
|
58
|
50
|
61
|
67
|
72
|
72
|
55
|
57
|
34
|
32
|
38
|
45
|
49
|
46
|
38
|
36
|
33
|
36
|
51
|
28
|
33
|
28
|
22
|
16
|
15
|
21
|
17
|
31
|
44
|
46
|
|
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