Air Quality
Good
Some pollutants may slightly affect very few hypersensitive individuals.
47
*
PM2.5
71
PM10
48
O3
0.7
CO
2
SO2
18
NO2
Some pollutants may slightly affect very few hypersensitive individuals.
Advise
Only very few hypersensitive people should reduce outdoor activities.
Air Quality
Today
20 Aug
66
Good
Fri
21 Aug
67
Good
Sat
22 Aug
67
Good
Sun
23 Aug
72
Good
Mon
24 Aug
94
Good
Tue
25 Aug
28
Excellent
Wed
26 Aug
28
Excellent
Air quality in the last 12 months (Cheng'an)
|
2026/07
|
60
|
69
|
50
|
52
|
53
|
37
|
33
|
40
|
45
|
30
|
36
|
41
|
33
|
47
|
36
|
41
|
38
|
39
|
44
|
48
|
45
|
44
|
42
|
35
|
41
|
38
|
34
|
35
|
19
|
21
|
26
|
|
2026/06
|
83
|
94
|
98
|
41
|
57
|
32
|
32
|
54
|
44
|
73
|
70
|
73
|
55
|
63
|
65
|
55
|
60
|
53
|
34
|
44
|
36
|
37
|
55
|
40
|
46
|
39
|
66
|
62
|
53
|
77
|
|
|
2026/05
|
57
|
32
|
31
|
42
|
57
|
53
|
54
|
51
|
53
|
58
|
65
|
73
|
65
|
77
|
66
|
59
|
61
|
34
|
38
|
29
|
35
|
39
|
48
|
58
|
28
|
26
|
44
|
50
|
49
|
62
|
65
|
|
2026/04
|
99
|
84
|
63
|
63
|
101
|
74
|
60
|
61
|
58
|
55
|
64
|
67
|
53
|
62
|
63
|
72
|
80
|
66
|
67
|
67
|
49
|
30
|
45
|
44
|
39
|
59
|
96
|
54
|
43
|
56
|
|
|
2026/03
|
60
|
87
|
99
|
88
|
68
|
53
|
56
|
85
|
78
|
113
|
113
|
126
|
141
|
100
|
36
|
53
|
99
|
58
|
61
|
89
|
86
|
69
|
99
|
99
|
85
|
74
|
114
|
103
|
41
|
57
|
67
|
|
2026/02
|
158
|
157
|
142
|
131
|
119
|
55
|
52
|
79
|
74
|
73
|
90
|
101
|
141
|
160
|
57
|
51
|
132
|
70
|
51
|
55
|
124
|
355
|
89
|
66
|
41
|
59
|
69
|
63
|
|||
|
2026/01
|
61
|
105
|
185
|
227
|
253
|
91
|
51
|
73
|
89
|
69
|
49
|
77
|
129
|
125
|
142
|
135
|
74
|
66
|
47
|
40
|
79
|
125
|
136
|
221
|
195
|
155
|
204
|
214
|
129
|
100
|
171
|
|
2025/12
|
127
|
45
|
53
|
74
|
104
|
122
|
80
|
71
|
156
|
201
|
152
|
37
|
68
|
76
|
106
|
197
|
159
|
218
|
198
|
151
|
98
|
72
|
91
|
111
|
57
|
80
|
147
|
202
|
173
|
127
|
39
|
|
2025/11
|
86
|
53
|
89
|
115
|
141
|
239
|
93
|
76
|
65
|
94
|
125
|
122
|
98
|
101
|
121
|
114
|
38
|
42
|
58
|
77
|
87
|
95
|
73
|
87
|
52
|
138
|
159
|
146
|
169
|
209
|
|
|
2025/10
|
61
|
28
|
39
|
44
|
28
|
18
|
34
|
28
|
10
|
15
|
25
|
28
|
31
|
42
|
57
|
63
|
37
|
24
|
44
|
33
|
44
|
68
|
88
|
105
|
75
|
127
|
135
|
144
|
90
|
194
|
203
|
|
2025/09
|
39
|
38
|
31
|
31
|
42
|
51
|
57
|
57
|
27
|
35
|
47
|
32
|
46
|
51
|
39
|
45
|
19
|
31
|
26
|
40
|
57
|
24
|
38
|
41
|
47
|
57
|
30
|
45
|
52
|
58
|
|
|
2025/08
|
41
|
44
|
40
|
42
|
37
|
37
|
47
|
44
|
19
|
24
|
38
|
21
|
34
|
39
|
32
|
19
|
22
|
31
|
35
|
31
|
29
|
31
|
27
|
17
|
32
|
42
|
51
|
31
|
42
|
28
|
29
|
|
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