Air Quality
Excellent
No health implications.
30
PM2.5
46
PM10
111
O3
0.3
CO
10
SO2
19
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
24 May
68
Good
Sun
25 May
66
Good
Mon
26 May
77
Good
Tue
27 May
86
Good
Wed
28 May
83
Good
Thu
29 May
39
Excellent
Fri
30 May
42
Excellent
Air quality in the last 12 months (Hainan Prefecture)
|
2025/04
|
40
|
50
|
169
|
60
|
62
|
119
|
82
|
117
|
53
|
91
|
343
|
87
|
76
|
43
|
128
|
282
|
86
|
66
|
82
|
111
|
329
|
75
|
72
|
49
|
64
|
87
|
38
|
44
|
153
|
131
|
|
|
2025/03
|
109
|
67
|
58
|
75
|
52
|
44
|
84
|
100
|
119
|
192
|
244
|
81
|
78
|
79
|
36
|
31
|
39
|
28
|
35
|
59
|
72
|
84
|
430
|
368
|
466
|
489
|
273
|
47
|
36
|
40
|
45
|
|
2025/02
|
65
|
29
|
31
|
30
|
60
|
109
|
54
|
46
|
60
|
92
|
118
|
76
|
68
|
79
|
76
|
71
|
77
|
50
|
38
|
46
|
49
|
35
|
38
|
50
|
69
|
91
|
74
|
82
|
|||
|
2025/01
|
84
|
62
|
58
|
103
|
66
|
56
|
31
|
29
|
40
|
48
|
64
|
72
|
173
|
32
|
42
|
75
|
71
|
79
|
98
|
95
|
90
|
79
|
80
|
110
|
113
|
65
|
41
|
93
|
176
|
77
|
78
|
|
2024/12
|
51
|
55
|
58
|
25
|
24
|
27
|
33
|
52
|
66
|
58
|
83
|
68
|
46
|
62
|
91
|
83
|
84
|
52
|
55
|
39
|
44
|
65
|
78
|
84
|
56
|
48
|
39
|
91
|
106
|
90
|
105
|
|
2024/11
|
65
|
80
|
46
|
54
|
64
|
71
|
89
|
82
|
68
|
78
|
54
|
56
|
109
|
86
|
120
|
42
|
54
|
56
|
92
|
92
|
67
|
61
|
84
|
80
|
60
|
143
|
87
|
32
|
41
|
56
|
|
|
2024/10
|
68
|
50
|
62
|
50
|
61
|
49
|
48
|
66
|
62
|
55
|
74
|
53
|
76
|
72
|
59
|
60
|
41
|
49
|
34
|
54
|
46
|
34
|
67
|
66
|
66
|
41
|
63
|
83
|
59
|
56
|
57
|
|
2024/09
|
34
|
39
|
46
|
50
|
55
|
26
|
25
|
46
|
75
|
64
|
34
|
41
|
28
|
29
|
25
|
43
|
48
|
58
|
85
|
23
|
26
|
47
|
58
|
61
|
42
|
50
|
68
|
71
|
45
|
86
|
|
|
2024/08
|
56
|
48
|
53
|
51
|
51
|
51
|
32
|
24
|
165
|
60
|
32
|
31
|
30
|
37
|
57
|
62
|
44
|
38
|
34
|
36
|
34
|
41
|
44
|
46
|
24
|
22
|
27
|
38
|
48
|
47
|
63
|
|
2024/07
|
54
|
43
|
44
|
49
|
67
|
57
|
35
|
53
|
50
|
60
|
76
|
57
|
62
|
61
|
37
|
39
|
32
|
37
|
45
|
131
|
150
|
73
|
117
|
167
|
69
|
41
|
35
|
41
|
39
|
35
|
56
|
|
2024/06
|
62
|
39
|
39
|
35
|
50
|
47
|
48
|
66
|
59
|
58
|
69
|
67
|
98
|
33
|
33
|
36
|
54
|
60
|
57
|
57
|
53
|
137
|
158
|
233
|
80
|
72
|
46
|
54
|
42
|
49
|
|
|
2024/05
|
46
|
57
|
45
|
47
|
65
|
57
|
47
|
70
|
61
|
158
|
88
|
48
|
58
|
197
|
61
|
100
|
110
|
119
|
239
|
70
|
74
|
73
|
91
|
88
|
77
|
33
|
43
|
55
|
106
|
56
|
40
|
|
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
Air quality source: CNEMC
*: primary pollution