Air Quality
Good
Some pollutants may slightly affect very few hypersensitive individuals.
18
PM2.5
53
*
PM10
124
O3
0.5
CO
9
SO2
13
NO2
Some pollutants may slightly affect very few hypersensitive individuals.
Advise
Only very few hypersensitive people should reduce outdoor activities.
Air Quality
Today
3 May
70
Good
Sun
4 May
102
Light
Mon
5 May
103
Light
Tue
6 May
86
Good
Wed
7 May
91
Good
Thu
8 May
82
Good
Fri
9 May
21
Excellent
Air quality in the last 12 months (Hongdong)
|
2025/02
|
180
|
121
|
26
|
40
|
26
|
86
|
42
|
31
|
50
|
75
|
89
|
68
|
54
|
70
|
75
|
66
|
67
|
81
|
73
|
77
|
102
|
98
|
47
|
51
|
69
|
62
|
73
|
73
|
|||
|
2025/01
|
81
|
66
|
66
|
90
|
92
|
42
|
35
|
31
|
46
|
55
|
60
|
51
|
87
|
69
|
43
|
54
|
62
|
93
|
82
|
94
|
89
|
110
|
151
|
125
|
77
|
79
|
29
|
48
|
125
|
102
|
173
|
|
2024/12
|
71
|
58
|
53
|
49
|
30
|
44
|
33
|
44
|
66
|
85
|
106
|
96
|
68
|
51
|
64
|
68
|
68
|
53
|
67
|
67
|
35
|
63
|
85
|
130
|
159
|
85
|
41
|
51
|
77
|
89
|
63
|
|
2024/11
|
71
|
82
|
109
|
58
|
61
|
71
|
83
|
86
|
79
|
99
|
127
|
145
|
86
|
68
|
90
|
70
|
59
|
57
|
52
|
67
|
82
|
74
|
83
|
109
|
47
|
43
|
71
|
34
|
47
|
64
|
|
|
2024/10
|
63
|
49
|
47
|
63
|
76
|
90
|
77
|
67
|
59
|
54
|
55
|
71
|
79
|
86
|
79
|
103
|
62
|
38
|
33
|
27
|
45
|
32
|
53
|
60
|
71
|
74
|
72
|
80
|
74
|
75
|
68
|
|
2024/09
|
60
|
51
|
56
|
57
|
28
|
42
|
49
|
50
|
53
|
45
|
44
|
35
|
49
|
41
|
49
|
45
|
46
|
52
|
36
|
42
|
32
|
53
|
63
|
64
|
61
|
76
|
83
|
61
|
39
|
21
|
|
|
2024/08
|
50
|
53
|
44
|
40
|
48
|
41
|
29
|
43
|
30
|
63
|
29
|
35
|
43
|
45
|
45
|
44
|
38
|
39
|
49
|
30
|
38
|
41
|
50
|
51
|
51
|
25
|
31
|
48
|
54
|
56
|
56
|
|
2024/07
|
44
|
54
|
49
|
49
|
48
|
50
|
46
|
42
|
50
|
57
|
52
|
52
|
52
|
57
|
67
|
38
|
30
|
34
|
44
|
29
|
40
|
45
|
43
|
41
|
60
|
49
|
53
|
45
|
40
|
21
|
39
|
|
2024/06
|
69
|
55
|
58
|
60
|
59
|
64
|
62
|
57
|
73
|
66
|
71
|
61
|
80
|
57
|
65
|
57
|
51
|
50
|
49
|
48
|
40
|
61
|
69
|
117
|
101
|
91
|
64
|
59
|
64
|
51
|
|
|
2024/05
|
55
|
52
|
56
|
45
|
69
|
48
|
54
|
67
|
69
|
62
|
127
|
81
|
80
|
72
|
85
|
62
|
72
|
79
|
66
|
71
|
67
|
68
|
62
|
70
|
67
|
66
|
68
|
60
|
64
|
61
|
68
|
|
2024/04
|
86
|
82
|
73
|
66
|
64
|
83
|
86
|
78
|
78
|
71
|
69
|
68
|
64
|
57
|
97
|
73
|
89
|
79
|
54
|
38
|
77
|
99
|
115
|
81
|
83
|
74
|
77
|
68
|
63
|
48
|
|
|
2024/03
|
45
|
65
|
63
|
91
|
158
|
65
|
71
|
46
|
66
|
93
|
88
|
60
|
90
|
87
|
78
|
168
|
82
|
122
|
77
|
67
|
79
|
115
|
90
|
43
|
56
|
70
|
66
|
93
|
84
|
70
|
81
|
|
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