Air Quality
Good
Some pollutants may slightly affect very few hypersensitive individuals.
10
PM2.5
39
PM10
173
O3
0.5
CO
10
SO2
7
NO2
Some pollutants may slightly affect very few hypersensitive individuals.
Advise
Only very few hypersensitive people should reduce outdoor activities.
Air Quality
Today
21 Jun
128
Light
Sun
22 Jun
148
Light
Mon
23 Jun
136
Light
Tue
24 Jun
137
Light
Wed
25 Jun
136
Light
Thu
26 Jun
132
Light
Fri
27 Jun
46
Excellent
Air quality in the last 12 months (Hongdong)
|
2025/05
|
71
|
87
|
46
|
61
|
179
|
148
|
107
|
73
|
55
|
43
|
52
|
54
|
68
|
51
|
54
|
73
|
136
|
64
|
78
|
70
|
69
|
63
|
44
|
37
|
53
|
52
|
50
|
60
|
62
|
62
|
61
|
|
2025/04
|
71
|
61
|
77
|
94
|
62
|
83
|
105
|
91
|
74
|
59
|
127
|
208
|
102
|
43
|
54
|
116
|
152
|
117
|
81
|
71
|
107
|
160
|
141
|
61
|
71
|
74
|
63
|
53
|
62
|
110
|
|
|
2025/03
|
83
|
88
|
47
|
46
|
72
|
75
|
75
|
79
|
78
|
82
|
109
|
237
|
111
|
91
|
47
|
34
|
45
|
39
|
47
|
43
|
58
|
69
|
114
|
335
|
321
|
245
|
230
|
174
|
49
|
53
|
67
|
|
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
|
|
|
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