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
15 Mar
Mon
16 Mar
Tue
17 Mar
Wed
18 Mar
Thu
19 Mar
Fri
20 Mar
Sat
21 Mar
Real-time AQI (Monitoring Station in Haikou)
海南大学
4116
PM2.5
41
PM10
104
O3
0.4
CO
6
SO2
2
NO2
秀英海南医院
3617
PM2.5
36
PM10
94
O3
0.2
CO
8
SO2
4
NO2
海南师范大学
4720
PM2.5
47
PM10
101
O3
0.4
CO
6
SO2
6
NO2
Air quality in the last 12 months (Haikou)
|
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
|
|
|
2025/08
|
26
|
29
|
34
|
33
|
27
|
33
|
30
|
23
|
27
|
21
|
20
|
22
|
23
|
19
|
17
|
16
|
19
|
9
|
17
|
21
|
21
|
16
|
20
|
20
|
19
|
17
|
15
|
16
|
18
|
16
|
13
|
|
2025/07
|
16
|
13
|
12
|
13
|
18
|
18
|
19
|
24
|
26
|
25
|
20
|
21
|
25
|
27
|
32
|
27
|
22
|
27
|
19
|
12
|
10
|
18
|
23
|
16
|
18
|
18
|
22
|
17
|
20
|
20
|
20
|
|
2025/06
|
22
|
22
|
29
|
24
|
11
|
16
|
20
|
23
|
21
|
23
|
20
|
17
|
14
|
15
|
20
|
19
|
24
|
19
|
17
|
18
|
17
|
15
|
15
|
15
|
13
|
11
|
12
|
17
|
16
|
17
|
|
|
2025/05
|
26
|
22
|
28
|
26
|
22
|
25
|
22
|
16
|
25
|
20
|
27
|
36
|
29
|
18
|
12
|
16
|
16
|
19
|
19
|
20
|
20
|
17
|
17
|
15
|
33
|
41
|
33
|
23
|
16
|
13
|
14
|
|
2025/04
|
23
|
36
|
31
|
34
|
40
|
31
|
43
|
37
|
37
|
36
|
28
|
34
|
150
|
167
|
148
|
120
|
80
|
52
|
38
|
27
|
29
|
29
|
31
|
30
|
29
|
25
|
17
|
29
|
37
|
34
|
|
|
2025/03
|
28
|
25
|
29
|
25
|
22
|
14
|
22
|
25
|
37
|
50
|
43
|
30
|
25
|
21
|
24
|
20
|
37
|
42
|
52
|
51
|
47
|
46
|
38
|
41
|
42
|
36
|
35
|
29
|
21
|
11
|
18
|
|
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