Air Quality
Good
Some pollutants may slightly affect very few hypersensitive individuals.
43
*
PM2.5
52
PM10
40
O3
0.9
CO
4
SO2
20
NO2
Some pollutants may slightly affect very few hypersensitive individuals.
Advise
Only very few hypersensitive people should reduce outdoor activities.
Air Quality
Today
14 Mar
86
Good
Sun
15 Mar
88
Good
Mon
16 Mar
93
Good
Tue
17 Mar
88
Good
Wed
18 Mar
92
Good
Thu
19 Mar
100
Good
Fri
20 Mar
33
Excellent
Air quality in the last 12 months (Hongdong)
|
2026/02
|
123
|
66
|
72
|
101
|
109
|
93
|
45
|
46
|
69
|
88
|
81
|
91
|
103
|
95
|
65
|
78
|
176
|
89
|
61
|
73
|
130
|
340
|
100
|
87
|
67
|
83
|
40
|
35
|
|||
|
2026/01
|
121
|
123
|
159
|
237
|
155
|
37
|
62
|
65
|
87
|
86
|
53
|
87
|
105
|
111
|
119
|
90
|
93
|
103
|
57
|
49
|
54
|
65
|
95
|
97
|
186
|
162
|
130
|
137
|
133
|
176
|
157
|
|
2025/12
|
101
|
69
|
44
|
72
|
92
|
131
|
114
|
73
|
87
|
133
|
105
|
59
|
92
|
122
|
114
|
138
|
105
|
84
|
115
|
54
|
60
|
102
|
133
|
92
|
45
|
58
|
80
|
113
|
106
|
69
|
80
|
|
2025/11
|
68
|
66
|
79
|
91
|
100
|
93
|
78
|
64
|
83
|
74
|
88
|
89
|
60
|
80
|
107
|
66
|
28
|
23
|
60
|
76
|
64
|
91
|
124
|
152
|
81
|
201
|
217
|
148
|
126
|
91
|
|
|
2025/10
|
64
|
43
|
56
|
51
|
48
|
24
|
35
|
47
|
24
|
18
|
27
|
34
|
49
|
62
|
43
|
49
|
40
|
40
|
55
|
47
|
53
|
63
|
70
|
90
|
62
|
75
|
56
|
75
|
80
|
111
|
81
|
|
2025/09
|
55
|
53
|
31
|
28
|
34
|
70
|
71
|
67
|
54
|
53
|
26
|
32
|
49
|
58
|
54
|
43
|
27
|
32
|
28
|
54
|
37
|
36
|
53
|
60
|
55
|
41
|
45
|
63
|
67
|
70
|
|
|
2025/08
|
51
|
49
|
50
|
51
|
43
|
41
|
44
|
48
|
33
|
42
|
54
|
56
|
54
|
55
|
38
|
22
|
46
|
41
|
46
|
42
|
34
|
50
|
37
|
42
|
45
|
42
|
43
|
34
|
42
|
56
|
58
|
|
2025/07
|
48
|
38
|
38
|
40
|
24
|
39
|
36
|
41
|
44
|
51
|
56
|
54
|
53
|
55
|
56
|
53
|
50
|
49
|
51
|
46
|
52
|
58
|
32
|
28
|
39
|
43
|
45
|
44
|
49
|
49
|
41
|
|
2025/06
|
59
|
52
|
41
|
47
|
52
|
53
|
63
|
59
|
66
|
56
|
63
|
59
|
62
|
40
|
35
|
40
|
47
|
57
|
47
|
49
|
47
|
49
|
49
|
44
|
54
|
46
|
53
|
39
|
50
|
48
|
|
|
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
|
|
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