Air Quality
Excellent
No health implications.
23
PM2.5
50
PM10
48
O3
0.5
CO
7
SO2
11
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
18 Apr
49
Excellent
Sat
19 Apr
50
Excellent
Sun
20 Apr
49
Excellent
Mon
21 Apr
49
Excellent
Tue
22 Apr
54
Good
Wed
23 Apr
50
Excellent
Thu
24 Apr
17
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