Air Quality
Excellent
No health implications.
4
PM2.5
24
PM10
31
O3
0.5
CO
4
SO2
3
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
17 Jun
38
Excellent
Wed
18 Jun
30
Excellent
Thu
19 Jun
39
Excellent
Fri
20 Jun
31
Excellent
Sat
21 Jun
39
Excellent
Sun
22 Jun
31
Excellent
Mon
23 Jun
16
Excellent
Simao Air quality rank
Air quality in the last 12 months (Simao)
|
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
|
|
2025/02
|
60
|
59
|
56
|
49
|
44
|
58
|
57
|
47
|
24
|
37
|
46
|
42
|
52
|
58
|
66
|
63
|
55
|
52
|
53
|
60
|
65
|
65
|
60
|
41
|
36
|
34
|
49
|
55
|
|||
|
2025/01
|
32
|
37
|
37
|
43
|
48
|
52
|
44
|
39
|
49
|
48
|
51
|
37
|
41
|
42
|
37
|
47
|
48
|
45
|
43
|
43
|
40
|
38
|
44
|
38
|
38
|
43
|
36
|
43
|
61
|
54
|
53
|
|
2024/12
|
29
|
27
|
31
|
27
|
30
|
33
|
35
|
41
|
38
|
36
|
39
|
42
|
39
|
35
|
26
|
24
|
30
|
27
|
35
|
42
|
35
|
41
|
36
|
41
|
38
|
43
|
45
|
45
|
40
|
36
|
39
|
|
2024/11
|
36
|
34
|
40
|
41
|
38
|
35
|
34
|
25
|
22
|
25
|
30
|
28
|
33
|
27
|
27
|
31
|
32
|
38
|
40
|
34
|
30
|
28
|
33
|
34
|
31
|
28
|
24
|
24
|
21
|
28
|
|
|
2024/10
|
22
|
20
|
24
|
21
|
25
|
26
|
33
|
32
|
33
|
27
|
30
|
25
|
29
|
32
|
29
|
24
|
23
|
34
|
34
|
26
|
23
|
26
|
25
|
29
|
30
|
32
|
39
|
49
|
42
|
39
|
36
|
|
2024/09
|
29
|
32
|
30
|
26
|
25
|
32
|
39
|
33
|
21
|
18
|
20
|
21
|
23
|
24
|
28
|
29
|
30
|
21
|
28
|
35
|
35
|
29
|
29
|
33
|
30
|
29
|
29
|
20
|
22
|
25
|
|
|
2024/08
|
18
|
17
|
22
|
23
|
20
|
19
|
16
|
19
|
21
|
24
|
25
|
35
|
36
|
28
|
27
|
26
|
27
|
26
|
20
|
20
|
24
|
18
|
18
|
18
|
22
|
18
|
20
|
21
|
23
|
23
|
26
|
|
2024/07
|
21
|
20
|
19
|
19
|
15
|
18
|
15
|
19
|
17
|
17
|
16
|
16
|
17
|
17
|
19
|
20
|
18
|
22
|
20
|
18
|
17
|
15
|
15
|
16
|
18
|
19
|
18
|
18
|
15
|
19
|
16
|
|
2024/06
|
22
|
26
|
28
|
35
|
39
|
23
|
16
|
17
|
19
|
23
|
22
|
18
|
19
|
18
|
23
|
26
|
36
|
34
|
27
|
24
|
24
|
19
|
24
|
21
|
19
|
17
|
17
|
14
|
17
|
16
|
|
|
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