Air Quality
Excellent
No health implications.
3
PM2.5
9
PM10
29
O3
0.6
CO
7
SO2
17
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
16 Mar
57
Good
Mon
17 Mar
84
Good
Tue
18 Mar
85
Good
Wed
19 Mar
90
Good
Thu
20 Mar
87
Good
Fri
21 Mar
85
Good
Sat
22 Mar
25
Excellent
Air quality in the last 12 months (Coloane Island)
|
2025/02
|
27
|
21
|
13
|
20
|
40
|
44
|
29
|
45
|
51
|
42
|
34
|
28
|
41
|
36
|
28
|
56
|
46
|
61
|
40
|
36
|
36
|
37
|
28
|
24
|
50
|
52
|
36
|
31
|
|||
|
2025/01
|
62
|
66
|
53
|
52
|
59
|
73
|
50
|
58
|
64
|
44
|
36
|
26
|
31
|
30
|
44
|
59
|
53
|
57
|
53
|
51
|
42
|
54
|
40
|
26
|
24
|
22
|
21
|
33
|
57
|
43
|
35
|
|
2024/12
|
45
|
47
|
43
|
37
|
52
|
65
|
67
|
44
|
43
|
39
|
45
|
43
|
45
|
55
|
50
|
48
|
59
|
52
|
55
|
66
|
56
|
58
|
67
|
67
|
65
|
53
|
67
|
61
|
70
|
70
|
70
|
|
2024/11
|
43
|
31
|
47
|
54
|
48
|
58
|
43
|
45
|
51
|
45
|
47
|
50
|
39
|
17
|
15
|
23
|
19
|
30
|
19
|
10
|
19
|
32
|
37
|
44
|
44
|
21
|
37
|
41
|
41
|
48
|
|
|
2024/10
|
33
|
33
|
44
|
43
|
48
|
43
|
45
|
50
|
46
|
36
|
32
|
40
|
32
|
28
|
28
|
26
|
29
|
28
|
42
|
21
|
39
|
32
|
31
|
42
|
47
|
48
|
49
|
26
|
35
|
42
|
42
|
|
2024/09
|
12
|
15
|
37
|
26
|
25
|
19
|
29
|
24
|
10
|
20
|
28
|
14
|
19
|
21
|
30
|
22
|
23
|
20
|
28
|
25
|
14
|
15
|
16
|
12
|
12
|
16
|
19
|
28
|
26
|
37
|
|
|
2024/08
|
27
|
24
|
21
|
18
|
30
|
30
|
25
|
16
|
16
|
19
|
23
|
18
|
16
|
16
|
14
|
12
|
14
|
16
|
16
|
16
|
14
|
16
|
19
|
17
|
13
|
12
|
18
|
32
|
39
|
26
|
12
|
|
2024/07
|
23
|
25
|
12
|
13
|
13
|
10
|
8
|
12
|
10
|
8
|
8
|
10
|
10
|
14
|
13
|
13
|
13
|
14
|
12
|
18
|
15
|
13
|
13
|
19
|
22
|
22
|
26
|
17
|
11
|
8
|
16
|
|
2024/06
|
16
|
24
|
20
|
28
|
30
|
32
|
16
|
14
|
17
|
12
|
21
|
23
|
25
|
30
|
30
|
27
|
20
|
24
|
21
|
14
|
15
|
25
|
10
|
14
|
16
|
17
|
15
|
12
|
11
|
20
|
|
|
2024/05
|
25
|
35
|
34
|
25
|
17
|
22
|
35
|
32
|
42
|
39
|
36
|
34
|
33
|
25
|
33
|
41
|
43
|
33
|
35
|
14
|
27
|
32
|
13
|
11
|
17
|
16
|
21
|
21
|
30
|
23
|
17
|
|
2024/04
|
55
|
49
|
27
|
27
|
39
|
39
|
23
|
40
|
22
|
32
|
44
|
39
|
31
|
21
|
35
|
24
|
23
|
17
|
28
|
27
|
18
|
25
|
27
|
35
|
15
|
19
|
30
|
25
|
21
|
25
|
|
|
2024/03
|
16
|
27
|
47
|
31
|
33
|
45
|
45
|
41
|
54
|
35
|
25
|
19
|
56
|
60
|
62
|
57
|
49
|
38
|
27
|
53
|
55
|
55
|
39
|
30
|
27
|
66
|
29
|
44
|
48
|
33
|
35
|
|
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