Air Quality
Excellent
No health implications.
19
PM2.5
50
PM10
156
O3
0.5
CO
8
SO2
15
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
7 May
94
Good
Wed
8 May
118
Lightly
Thu
9 May
137
Lightly
Fri
10 May
134
Lightly
Sat
11 May
107
Lightly
Sun
12 May
106
Lightly
Mon
13 May
107
Lightly
Air quality in the last 12 months (Hongdong)
|
2024/02
|
149
|
173
|
127
|
87
|
152
|
179
|
163
|
190
|
185
|
227
|
81
|
71
|
71
|
75
|
87
|
56
|
62
|
155
|
227
|
57
|
48
|
51
|
43
|
108
|
107
|
101
|
85
|
104
|
120
|
||
|
2024/01
|
103
|
105
|
64
|
79
|
68
|
57
|
52
|
96
|
108
|
67
|
93
|
109
|
138
|
121
|
95
|
127
|
103
|
141
|
93
|
102
|
28
|
28
|
53
|
60
|
68
|
59
|
68
|
74
|
70
|
115
|
166
|
|
2023/12
|
46
|
76
|
90
|
134
|
150
|
149
|
132
|
112
|
114
|
80
|
78
|
121
|
74
|
61
|
30
|
34
|
38
|
84
|
88
|
41
|
30
|
55
|
63
|
56
|
68
|
101
|
136
|
204
|
259
|
222
|
74
|
|
2023/11
|
97
|
81
|
85
|
75
|
51
|
53
|
59
|
84
|
73
|
56
|
53
|
54
|
63
|
83
|
77
|
85
|
54
|
67
|
111
|
93
|
122
|
113
|
53
|
56
|
61
|
96
|
107
|
61
|
49
|
34
|
|
|
2023/10
|
54
|
46
|
64
|
90
|
76
|
52
|
66
|
77
|
60
|
62
|
79
|
76
|
92
|
80
|
79
|
77
|
88
|
71
|
58
|
63
|
62
|
71
|
85
|
103
|
153
|
121
|
77
|
82
|
98
|
90
|
97
|
|
2023/09
|
58
|
54
|
52
|
69
|
60
|
65
|
72
|
65
|
51
|
48
|
61
|
52
|
53
|
49
|
53
|
60
|
43
|
43
|
52
|
59
|
56
|
58
|
50
|
36
|
69
|
71
|
68
|
73
|
74
|
62
|
|
|
2023/08
|
30
|
37
|
45
|
43
|
41
|
39
|
48
|
52
|
58
|
64
|
55
|
35
|
58
|
65
|
65
|
75
|
120
|
118
|
94
|
47
|
44
|
63
|
48
|
38
|
48
|
30
|
22
|
41
|
49
|
66
|
59
|
|
2023/07
|
76
|
61
|
51
|
49
|
73
|
81
|
72
|
47
|
58
|
71
|
68
|
48
|
50
|
45
|
40
|
58
|
67
|
72
|
76
|
57
|
56
|
52
|
67
|
66
|
52
|
47
|
47
|
54
|
50
|
19
|
28
|
|
2023/06
|
55
|
57
|
50
|
60
|
82
|
83
|
72
|
53
|
54
|
54
|
71
|
64
|
66
|
77
|
65
|
64
|
44
|
56
|
64
|
79
|
74
|
80
|
70
|
64
|
76
|
71
|
69
|
51
|
58
|
70
|
|
|
2023/05
|
76
|
75
|
71
|
70
|
83
|
39
|
49
|
59
|
58
|
61
|
73
|
73
|
71
|
72
|
78
|
76
|
73
|
67
|
70
|
118
|
62
|
49
|
54
|
51
|
58
|
73
|
37
|
46
|
59
|
55
|
51
|
|
2023/04
|
74
|
90
|
57
|
39
|
51
|
55
|
56
|
61
|
92
|
132
|
420
|
196
|
128
|
143
|
112
|
106
|
88
|
117
|
102
|
276
|
34
|
39
|
36
|
47
|
85
|
73
|
67
|
196
|
110
|
91
|
|
|
2023/03
|
60
|
68
|
84
|
76
|
87
|
94
|
91
|
115
|
104
|
82
|
219
|
133
|
87
|
90
|
65
|
72
|
64
|
87
|
80
|
83
|
113
|
201
|
434
|
235
|
147
|
107
|
95
|
83
|
71
|
78
|
74
|
|
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