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
13 Nov
Sat
14 Nov
Sun
15 Nov
Mon
16 Nov
Tue
17 Nov
Wed
18 Nov
Thu
19 Nov
Real-time AQI (Monitoring Station in Haikou)
海南大学
2415
PM2.5
21
PM10
74
O3
0.7
CO
4
SO2
9
NO2
秀英海南医院
2215
PM2.5
15
PM10
70
O3
0.6
CO
5
SO2
10
NO2
海南师范大学
2214
PM2.5
14
PM10
69
O3
0.7
CO
4
SO2
7
NO2
Air quality in the last 12 months (Haikou)
|
2026/09
|
27
|
34
|
31
|
29
|
30
|
31
|
26
|
22
|
24
|
40
|
41
|
46
|
22
|
16
|
21
|
28
|
32
|
33
|
27
|
32
|
32
|
32
|
30
|
25
|
23
|
22
|
22
|
28
|
20
|
26
|
|
|
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
|
|
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