Air Quality
Excellent
No health implications.
12
PM2.5
31
PM10
40
O3
0.3
CO
2
SO2
6
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
21 Aug
37
Excellent
Fri
22 Aug
43
Excellent
Sat
23 Aug
49
Excellent
Sun
24 Aug
54
Good
Mon
25 Aug
46
Excellent
Tue
26 Aug
51
Good
Wed
27 Aug
24
Excellent
Chikan Air quality rank
Air quality in the last 12 months (Chikan)
|
2025/06
|
27
|
28
|
27
|
24
|
16
|
16
|
18
|
23
|
25
|
26
|
23
|
17
|
21
|
17
|
25
|
24
|
23
|
23
|
18
|
22
|
21
|
18
|
19
|
18
|
13
|
12
|
13
|
14
|
16
|
19
|
|
|
2025/05
|
30
|
27
|
31
|
25
|
29
|
27
|
25
|
16
|
20
|
22
|
34
|
39
|
32
|
27
|
17
|
15
|
16
|
23
|
21
|
23
|
23
|
23
|
17
|
14
|
22
|
40
|
48
|
27
|
19
|
17
|
19
|
|
2025/04
|
29
|
54
|
43
|
46
|
43
|
49
|
55
|
48
|
41
|
36
|
33
|
48
|
179
|
157
|
132
|
116
|
87
|
65
|
43
|
31
|
29
|
44
|
36
|
37
|
23
|
28
|
29
|
22
|
34
|
36
|
|
|
2025/03
|
37
|
26
|
30
|
30
|
25
|
9
|
14
|
25
|
42
|
31
|
34
|
35
|
24
|
21
|
24
|
23
|
37
|
50
|
57
|
59
|
61
|
54
|
52
|
58
|
54
|
35
|
36
|
31
|
14
|
13
|
17
|
|
2025/02
|
28
|
22
|
33
|
22
|
43
|
47
|
46
|
40
|
57
|
46
|
33
|
43
|
56
|
28
|
26
|
34
|
61
|
56
|
44
|
35
|
30
|
44
|
49
|
26
|
54
|
75
|
64
|
37
|
|||
|
2025/01
|
93
|
77
|
97
|
63
|
80
|
95
|
58
|
59
|
86
|
61
|
52
|
48
|
54
|
70
|
54
|
70
|
65
|
57
|
78
|
81
|
78
|
47
|
46
|
39
|
33
|
25
|
42
|
48
|
109
|
50
|
41
|
|
2024/12
|
51
|
48
|
44
|
46
|
41
|
58
|
71
|
37
|
46
|
51
|
46
|
46
|
45
|
51
|
58
|
54
|
58
|
57
|
50
|
50
|
77
|
66
|
66
|
69
|
74
|
78
|
86
|
70
|
79
|
66
|
83
|
|
2024/11
|
52
|
47
|
53
|
43
|
51
|
56
|
59
|
59
|
67
|
60
|
46
|
65
|
81
|
71
|
61
|
46
|
29
|
37
|
36
|
19
|
28
|
37
|
35
|
41
|
30
|
29
|
43
|
49
|
46
|
48
|
|
|
2024/10
|
43
|
30
|
48
|
49
|
49
|
50
|
48
|
59
|
56
|
56
|
50
|
37
|
34
|
34
|
30
|
29
|
23
|
17
|
21
|
30
|
36
|
43
|
23
|
37
|
46
|
46
|
37
|
23
|
24
|
34
|
50
|
|
2024/09
|
15
|
23
|
39
|
36
|
45
|
19
|
25
|
33
|
25
|
17
|
19
|
26
|
31
|
48
|
39
|
37
|
26
|
23
|
27
|
23
|
27
|
13
|
17
|
16
|
37
|
41
|
40
|
34
|
30
|
36
|
|
|
2024/08
|
23
|
24
|
22
|
27
|
26
|
24
|
32
|
28
|
30
|
31
|
27
|
27
|
22
|
28
|
21
|
22
|
18
|
17
|
21
|
20
|
23
|
25
|
25
|
34
|
25
|
32
|
26
|
27
|
22
|
25
|
14
|
|
2024/07
|
27
|
25
|
20
|
16
|
11
|
11
|
11
|
15
|
14
|
17
|
19
|
18
|
14
|
15
|
18
|
15
|
14
|
13
|
13
|
18
|
13
|
14
|
18
|
22
|
21
|
24
|
25
|
20
|
10
|
12
|
21
|
|
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