Hainan - China   2021-10-24   Sunday   19.26N, 109.05E

Changjiang

Hainan - China
2021-10-24

Excellent

No health implications.

PM2.5
ug/m3
PM10
ug/m3
SO2   
ug/m3
CO  
ug/m3
O3
ug/m3
NO2
ug/m3

No health implications.

Advise

Everyone can continue their outdoor activities normally.

Air Quality

Changjiang Air quality rank

Monthly Average AQI (Changjiang)

2017/01 - 2021/09

Air quality in the last 12 months (Changjiang)

2021/09
17
17
17
17
15
15
17
12
17
25
17
19
20
17
15
16
20
23
19
17
17
15
17
12
17
14
20
26
28
34
2021/08
17
22
27
27
30
33
32
29
27
21
20
18
19
19
18
17
18
17
17
19
18
22
21
22
19
18
12
15
17
15
16
2021/07
27
22
23
25
22
18
15
15
14
19
20
20
20
20
17
18
17
20
21
21
17
16
18
18
18
26
24
19
23
22
24
2021/06
29
31
29
27
30
31
27
21
19
22
25
17
16
20
21
20
25
22
23
26
28
36
38
32
24
24
24
23
20
23
2021/05
23
21
19
26
27
23
28
26
27
30
31
28
24
20
23
25
26
23
23
25
25
23
23
17
16
17
20
22
22
23
25
2021/04
45
49
48
36
32
31
32
33
25
27
30
31
32
32
33
32
26
20
25
35
29
35
35
38
35
21
23
24
29
28
2021/03
27
28
24
29
35
33
34
25
30
32
37
36
36
38
40
39
39
40
30
30
30
32
64
57
42
37
38
35
45
49
52
2021/02
33
30
36
46
41
39
35
40
23
17
23
43
39
40
36
32
33
41
45
40
36
34
30
28
27
23
22
27
2021/01
43
48
46
46
49
54
48
24
31
35
35
38
51
50
60
51
59
77
73
49
44
50
56
53
42
47
42
45
55
51
45
2020/12
33
38
39
34
39
46
52
55
55
53
47
48
35
34
23
18
20
26
35
45
51
49
51
46
53
43
39
41
36
46
45
2020/11
39
53
50
52
47
42
59
69
57
53
42
47
54
36
28
35
35
29
26
19
19
29
33
41
37
37
43
39
33
34
2020/10
17
16
13
18
29
26
24
26
28
35
38
43
42
18
22
29
25
23
26
29
29
33
43
50
30
35
44
27
30
24
37
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