Air Quality
Excellent
No health implications.
19
PM2.5
46
PM10
146
O3
0.5
CO
6
SO2
9
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
4 May
93
Good
Mon
5 May
98
Good
Tue
6 May
85
Good
Wed
7 May
97
Good
Thu
8 May
87
Good
Fri
9 May
102
Light
Sat
10 May
31
Excellent
Air quality in the last 12 months (Weihui)
|
2025/02
|
102
|
163
|
123
|
73
|
52
|
66
|
96
|
63
|
76
|
93
|
124
|
98
|
60
|
76
|
79
|
72
|
71
|
71
|
54
|
69
|
98
|
93
|
60
|
81
|
90
|
90
|
120
|
151
|
|||
|
2025/01
|
136
|
95
|
97
|
148
|
94
|
64
|
60
|
63
|
52
|
81
|
81
|
55
|
96
|
107
|
55
|
57
|
81
|
105
|
110
|
123
|
207
|
106
|
74
|
114
|
119
|
77
|
32
|
52
|
230
|
185
|
90
|
|
2024/12
|
73
|
52
|
64
|
133
|
130
|
91
|
69
|
72
|
87
|
126
|
118
|
134
|
76
|
65
|
57
|
62
|
84
|
60
|
56
|
98
|
54
|
67
|
86
|
143
|
178
|
104
|
73
|
53
|
66
|
77
|
91
|
|
2024/11
|
65
|
93
|
109
|
56
|
53
|
84
|
83
|
70
|
69
|
137
|
181
|
216
|
139
|
84
|
89
|
93
|
55
|
56
|
54
|
73
|
85
|
91
|
81
|
75
|
47
|
38
|
70
|
38
|
42
|
77
|
|
|
2024/10
|
51
|
35
|
52
|
55
|
60
|
69
|
109
|
130
|
160
|
92
|
82
|
127
|
103
|
109
|
154
|
88
|
77
|
20
|
27
|
23
|
49
|
76
|
76
|
83
|
89
|
121
|
181
|
113
|
163
|
199
|
213
|
|
2024/09
|
53
|
26
|
37
|
53
|
38
|
25
|
47
|
67
|
62
|
32
|
24
|
29
|
39
|
51
|
35
|
47
|
51
|
42
|
45
|
48
|
16
|
25
|
48
|
64
|
97
|
109
|
101
|
78
|
62
|
14
|
|
|
2024/08
|
32
|
27
|
27
|
28
|
34
|
20
|
30
|
40
|
31
|
77
|
44
|
31
|
33
|
40
|
43
|
47
|
43
|
28
|
21
|
21
|
29
|
47
|
48
|
56
|
45
|
36
|
17
|
25
|
41
|
49
|
45
|
|
2024/07
|
28
|
30
|
50
|
25
|
22
|
41
|
35
|
20
|
43
|
68
|
66
|
36
|
52
|
86
|
66
|
46
|
35
|
33
|
30
|
16
|
37
|
38
|
33
|
44
|
27
|
25
|
26
|
19
|
9
|
13
|
20
|
|
2024/06
|
61
|
82
|
72
|
97
|
74
|
75
|
58
|
63
|
61
|
65
|
67
|
68
|
63
|
55
|
48
|
47
|
39
|
53
|
47
|
52
|
35
|
56
|
77
|
86
|
78
|
65
|
52
|
51
|
30
|
39
|
|
|
2024/05
|
52
|
55
|
53
|
59
|
84
|
90
|
90
|
65
|
62
|
64
|
185
|
117
|
110
|
87
|
80
|
68
|
70
|
76
|
61
|
57
|
63
|
57
|
64
|
69
|
67
|
79
|
45
|
59
|
61
|
51
|
76
|
|
2024/04
|
127
|
96
|
66
|
42
|
66
|
70
|
64
|
68
|
81
|
85
|
74
|
60
|
60
|
41
|
68
|
87
|
83
|
78
|
71
|
76
|
75
|
79
|
88
|
87
|
95
|
73
|
68
|
79
|
61
|
54
|
|
|
2024/03
|
105
|
98
|
80
|
110
|
90
|
101
|
100
|
51
|
74
|
90
|
88
|
98
|
102
|
126
|
74
|
105
|
94
|
76
|
106
|
84
|
105
|
114
|
87
|
51
|
40
|
68
|
52
|
91
|
113
|
117
|
95
|
|
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