Air Quality
Good
Some pollutants may slightly affect very few hypersensitive individuals.
41
PM2.5
111
*
PM10
44
O3
0.3
CO
1
SO2
31
NO2
Some pollutants may slightly affect very few hypersensitive individuals.
Advise
Only very few hypersensitive people should reduce outdoor activities.
Air Quality
Today
25 Nov
75
Good
Wed
26 Nov
88
Good
Thu
27 Nov
89
Good
Fri
28 Nov
88
Good
Sat
29 Nov
115
Light
Sun
30 Nov
92
Good
Mon
1 Dec
32
Excellent
Air quality in the last 12 months (Cao County)
|
2025/10
|
29
|
8
|
23
|
29
|
13
|
11
|
38
|
48
|
12
|
12
|
18
|
19
|
24
|
37
|
40
|
52
|
21
|
38
|
42
|
42
|
45
|
62
|
84
|
82
|
79
|
96
|
107
|
90
|
71
|
84
|
204
|
|
2025/09
|
26
|
32
|
34
|
40
|
42
|
35
|
50
|
20
|
25
|
34
|
25
|
20
|
44
|
30
|
24
|
15
|
22
|
22
|
12
|
25
|
40
|
29
|
17
|
25
|
35
|
28
|
19
|
18
|
33
|
37
|
|
|
2025/08
|
27
|
24
|
25
|
33
|
34
|
29
|
28
|
28
|
20
|
23
|
22
|
21
|
26
|
28
|
29
|
26
|
31
|
30
|
35
|
24
|
27
|
30
|
21
|
30
|
34
|
36
|
32
|
34
|
30
|
37
|
21
|
|
2025/07
|
20
|
30
|
22
|
25
|
32
|
36
|
39
|
34
|
22
|
49
|
57
|
37
|
40
|
44
|
40
|
42
|
35
|
35
|
44
|
34
|
21
|
26
|
21
|
28
|
29
|
29
|
27
|
26
|
18
|
34
|
37
|
|
2025/06
|
49
|
51
|
63
|
70
|
67
|
64
|
71
|
89
|
58
|
60
|
55
|
46
|
44
|
53
|
48
|
49
|
50
|
41
|
19
|
29
|
44
|
32
|
43
|
45
|
60
|
22
|
29
|
22
|
12
|
17
|
|
|
2025/05
|
58
|
89
|
47
|
50
|
106
|
118
|
78
|
66
|
42
|
28
|
51
|
54
|
55
|
60
|
64
|
85
|
130
|
81
|
92
|
68
|
63
|
68
|
71
|
57
|
53
|
55
|
59
|
60
|
57
|
66
|
70
|
|
2025/04
|
71
|
53
|
55
|
75
|
79
|
81
|
82
|
88
|
100
|
101
|
79
|
202
|
90
|
60
|
61
|
83
|
100
|
95
|
43
|
63
|
54
|
71
|
88
|
75
|
68
|
62
|
66
|
51
|
55
|
78
|
|
|
2025/03
|
160
|
43
|
32
|
35
|
60
|
87
|
78
|
84
|
103
|
99
|
106
|
157
|
106
|
61
|
70
|
43
|
50
|
52
|
62
|
54
|
52
|
68
|
90
|
233
|
131
|
93
|
107
|
124
|
60
|
59
|
76
|
|
2025/02
|
107
|
144
|
141
|
74
|
58
|
73
|
72
|
44
|
60
|
70
|
108
|
142
|
108
|
83
|
85
|
72
|
65
|
74
|
84
|
63
|
66
|
104
|
80
|
54
|
73
|
98
|
102
|
109
|
|||
|
2025/01
|
162
|
126
|
122
|
189
|
140
|
64
|
65
|
62
|
53
|
68
|
95
|
70
|
90
|
158
|
59
|
66
|
94
|
116
|
133
|
124
|
181
|
205
|
107
|
179
|
136
|
81
|
43
|
58
|
255
|
144
|
94
|
|
2024/12
|
83
|
78
|
73
|
124
|
167
|
182
|
87
|
55
|
61
|
114
|
126
|
98
|
104
|
87
|
69
|
91
|
107
|
48
|
62
|
97
|
66
|
56
|
79
|
120
|
169
|
140
|
78
|
82
|
80
|
108
|
114
|
|
2024/11
|
137
|
97
|
122
|
74
|
55
|
73
|
61
|
49
|
60
|
77
|
152
|
144
|
122
|
92
|
99
|
78
|
54
|
50
|
44
|
68
|
110
|
128
|
71
|
54
|
52
|
46
|
61
|
52
|
47
|
71
|
|
|
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