Air Quality
Excellent
No health implications.
17
PM2.5
40
PM10
74
O3
0.6
CO
5
SO2
10
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
15 Mar
88
Good
Mon
16 Mar
81
Good
Tue
17 Mar
85
Good
Wed
18 Mar
56
Good
Thu
19 Mar
52
Good
Fri
20 Mar
51
Good
Sat
21 Mar
42
Excellent
Simao Air quality rank
Air quality in the last 12 months (Simao)
|
2026/02
|
54
|
54
|
54
|
51
|
51
|
42
|
49
|
53
|
48
|
49
|
52
|
54
|
53
|
53
|
51
|
64
|
96
|
51
|
55
|
53
|
47
|
49
|
52
|
61
|
46
|
34
|
48
|
60
|
|||
|
2026/01
|
44
|
44
|
42
|
41
|
39
|
41
|
34
|
35
|
39
|
46
|
42
|
46
|
45
|
45
|
51
|
50
|
47
|
47
|
49
|
47
|
45
|
46
|
50
|
49
|
39
|
48
|
48
|
41
|
56
|
52
|
49
|
|
2025/12
|
42
|
39
|
38
|
37
|
41
|
40
|
39
|
36
|
39
|
38
|
40
|
41
|
41
|
41
|
35
|
34
|
32
|
31
|
36
|
36
|
32
|
36
|
39
|
37
|
43
|
40
|
39
|
41
|
41
|
39
|
43
|
|
2025/11
|
28
|
23
|
22
|
22
|
24
|
26
|
32
|
31
|
24
|
24
|
28
|
27
|
29
|
29
|
30
|
33
|
34
|
22
|
23
|
30
|
27
|
30
|
30
|
38
|
41
|
45
|
52
|
50
|
47
|
44
|
|
|
2025/10
|
24
|
27
|
27
|
27
|
27
|
33
|
27
|
27
|
27
|
28
|
27
|
31
|
38
|
32
|
33
|
28
|
29
|
33
|
36
|
38
|
38
|
30
|
31
|
36
|
33
|
26
|
31
|
32
|
37
|
35
|
34
|
|
2025/09
|
29
|
29
|
26
|
28
|
29
|
30
|
33
|
34
|
35
|
26
|
25
|
26
|
25
|
21
|
24
|
27
|
26
|
27
|
33
|
29
|
31
|
32
|
26
|
26
|
32
|
25
|
27
|
33
|
26
|
27
|
|
|
2025/08
|
24
|
27
|
28
|
27
|
28
|
25
|
20
|
23
|
25
|
26
|
28
|
25
|
26
|
30
|
32
|
28
|
31
|
31
|
30
|
25
|
25
|
24
|
22
|
27
|
28
|
28
|
22
|
24
|
27
|
30
|
34
|
|
2025/07
|
30
|
22
|
22
|
23
|
24
|
21
|
24
|
25
|
32
|
26
|
27
|
31
|
31
|
25
|
26
|
28
|
24
|
21
|
26
|
30
|
33
|
31
|
26
|
21
|
23
|
26
|
21
|
31
|
29
|
33
|
27
|
|
2025/06
|
23
|
24
|
26
|
53
|
49
|
51
|
44
|
37
|
29
|
30
|
45
|
47
|
49
|
45
|
27
|
25
|
24
|
25
|
27
|
33
|
36
|
23
|
24
|
22
|
24
|
28
|
29
|
22
|
24
|
26
|
|
|
2025/05
|
27
|
31
|
26
|
30
|
30
|
40
|
48
|
54
|
54
|
57
|
34
|
24
|
35
|
30
|
32
|
29
|
27
|
27
|
34
|
41
|
40
|
38
|
38
|
51
|
23
|
19
|
21
|
23
|
26
|
24
|
24
|
|
2025/04
|
63
|
45
|
46
|
83
|
108
|
79
|
68
|
60
|
67
|
66
|
59
|
58
|
46
|
40
|
28
|
28
|
28
|
35
|
42
|
35
|
39
|
47
|
60
|
68
|
69
|
74
|
77
|
75
|
46
|
32
|
|
|
2025/03
|
51
|
59
|
68
|
75
|
74
|
78
|
60
|
54
|
51
|
51
|
65
|
60
|
69
|
81
|
79
|
76
|
79
|
38
|
23
|
53
|
58
|
53
|
57
|
52
|
49
|
52
|
75
|
105
|
94
|
103
|
92
|
|
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