Air Quality
Excellent
No health implications.
PM2.5
PM10
O3
CO
SO2
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
12 Sep
Sun
13 Sep
Mon
14 Sep
Tue
15 Sep
Wed
16 Sep
Thu
17 Sep
Fri
18 Sep
Real-time AQI (Monitoring Station in Haikou)
海南大学
5027
PM2.5
46
PM10
157
O3
0.5
CO
7
SO2
6
NO2
秀英海南医院
4827
PM2.5
34
PM10
152
O3
0.5
CO
7
SO2
6
NO2
海南师范大学
4929
PM2.5
43
PM10
155
O3
0.6
CO
4
SO2
6
NO2
Air quality in the last 12 months (Haikou)
|
2026/08
|
16
|
15
|
15
|
15
|
14
|
14
|
18
|
22
|
32
|
33
|
40
|
26
|
22
|
28
|
26
|
24
|
25
|
29
|
22
|
19
|
16
|
16
|
18
|
21
|
20
|
21
|
27
|
26
|
23
|
22
|
22
|
|
2026/07
|
18
|
19
|
17
|
18
|
22
|
18
|
15
|
17
|
19
|
22
|
24
|
20
|
23
|
24
|
22
|
22
|
24
|
26
|
32
|
39
|
36
|
38
|
35
|
35
|
32
|
27
|
27
|
20
|
17
|
14
|
13
|
|
2026/06
|
24
|
27
|
28
|
27
|
28
|
24
|
26
|
25
|
26
|
31
|
37
|
28
|
24
|
23
|
27
|
23
|
24
|
27
|
24
|
24
|
23
|
25
|
26
|
28
|
29
|
29
|
27
|
24
|
20
|
19
|
|
|
2026/05
|
38
|
27
|
27
|
27
|
34
|
25
|
21
|
18
|
19
|
22
|
24
|
25
|
24
|
29
|
26
|
22
|
20
|
19
|
19
|
18
|
19
|
20
|
22
|
25
|
27
|
30
|
29
|
26
|
28
|
25
|
18
|
|
2026/04
|
42
|
37
|
37
|
32
|
49
|
48
|
49
|
46
|
33
|
33
|
45
|
44
|
38
|
36
|
25
|
22
|
24
|
25
|
31
|
31
|
27
|
31
|
51
|
25
|
30
|
33
|
22
|
27
|
30
|
26
|
|
|
2026/03
|
17
|
22
|
23
|
14
|
25
|
31
|
33
|
43
|
34
|
25
|
39
|
39
|
43
|
45
|
41
|
37
|
33
|
28
|
25
|
22
|
23
|
30
|
31
|
26
|
26
|
25
|
27
|
31
|
29
|
27
|
33
|
|
2026/02
|
29
|
31
|
30
|
39
|
32
|
20
|
22
|
37
|
38
|
38
|
33
|
27
|
38
|
31
|
26
|
27
|
33
|
42
|
35
|
34
|
32
|
27
|
28
|
30
|
43
|
31
|
36
|
15
|
|||
|
2026/01
|
35
|
43
|
34
|
39
|
43
|
50
|
41
|
37
|
43
|
41
|
41
|
47
|
54
|
53
|
41
|
37
|
39
|
43
|
36
|
40
|
51
|
45
|
42
|
46
|
25
|
29
|
33
|
51
|
33
|
30
|
25
|
|
2025/12
|
51
|
32
|
37
|
59
|
48
|
57
|
45
|
62
|
50
|
49
|
58
|
42
|
41
|
28
|
52
|
43
|
56
|
46
|
45
|
38
|
41
|
42
|
41
|
35
|
31
|
31
|
38
|
39
|
45
|
44
|
52
|
|
2025/11
|
39
|
44
|
46
|
22
|
21
|
29
|
17
|
18
|
34
|
36
|
34
|
27
|
49
|
33
|
40
|
44
|
39
|
49
|
27
|
32
|
37
|
40
|
51
|
53
|
46
|
52
|
50
|
54
|
59
|
44
|
|
|
2025/10
|
16
|
14
|
15
|
16
|
22
|
18
|
20
|
16
|
21
|
27
|
24
|
15
|
12
|
12
|
18
|
23
|
24
|
30
|
33
|
28
|
23
|
21
|
22
|
32
|
39
|
40
|
36
|
40
|
42
|
28
|
46
|
|
2025/09
|
13
|
15
|
12
|
14
|
14
|
14
|
20
|
17
|
18
|
17
|
18
|
13
|
13
|
16
|
20
|
14
|
15
|
17
|
21
|
22
|
22
|
11
|
24
|
23
|
18
|
19
|
27
|
18
|
23
|
20
|
|
|
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
*: primary pollution