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
16 Jul
Fri
17 Jul
Sat
18 Jul
Sun
19 Jul
Mon
20 Jul
Tue
21 Jul
Wed
22 Jul
Real-time AQI (Monitoring Station in Haikou)
海南大学
2815
PM2.5
28
PM10
24
O3
0.5
CO
4
SO2
7
NO2
秀英海南医院
2618
PM2.5
24
PM10
12
O3
0.3
CO
5
SO2
16
NO2
海南师范大学
2917
PM2.5
29
PM10
19
O3
0.4
CO
2
SO2
8
NO2
Air quality in the last 12 months (Haikou)
|
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
|
|
|
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
|
|
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