Air Quality
Good
Some pollutants may slightly affect very few hypersensitive individuals.
57
*
PM2.5
103
PM10
62
O3
0.4
CO
3
SO2
22
NO2
Some pollutants may slightly affect very few hypersensitive individuals.
Advise
Only very few hypersensitive people should reduce outdoor activities.
Air Quality
Today
15 Jan
147
Light
Fri
16 Jan
167
Moderate
Sat
17 Jan
113
Light
Sun
18 Jan
46
Excellent
Mon
19 Jan
48
Excellent
Tue
20 Jan
73
Good
Wed
21 Jan
18
Excellent
Cheng'an Air quality rank
Air quality in the last 12 months (Cheng'an)
|
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
|
|
2025/07
|
23
|
29
|
31
|
34
|
35
|
30
|
39
|
36
|
48
|
59
|
54
|
58
|
59
|
59
|
52
|
43
|
42
|
36
|
47
|
46
|
34
|
38
|
21
|
23
|
31
|
37
|
36
|
36
|
34
|
31
|
35
|
|
2025/06
|
77
|
83
|
46
|
51
|
78
|
84
|
101
|
76
|
69
|
50
|
65
|
58
|
57
|
58
|
44
|
27
|
39
|
49
|
36
|
38
|
42
|
47
|
48
|
48
|
54
|
43
|
55
|
35
|
24
|
28
|
|
|
2025/05
|
49
|
74
|
47
|
48
|
158
|
97
|
82
|
77
|
26
|
31
|
51
|
57
|
64
|
59
|
38
|
66
|
134
|
69
|
94
|
73
|
73
|
59
|
57
|
47
|
54
|
65
|
57
|
61
|
61
|
59
|
59
|
|
2025/04
|
71
|
45
|
64
|
88
|
58
|
78
|
99
|
75
|
69
|
87
|
93
|
169
|
65
|
43
|
57
|
122
|
188
|
82
|
31
|
63
|
57
|
59
|
70
|
61
|
71
|
81
|
81
|
60
|
56
|
79
|
|
|
2025/03
|
189
|
79
|
43
|
38
|
59
|
61
|
74
|
96
|
90
|
101
|
101
|
131
|
127
|
76
|
58
|
36
|
46
|
49
|
53
|
45
|
48
|
59
|
103
|
213
|
190
|
99
|
103
|
171
|
57
|
60
|
66
|
|
2025/02
|
82
|
129
|
85
|
52
|
48
|
94
|
56
|
45
|
72
|
83
|
127
|
110
|
77
|
76
|
79
|
61
|
56
|
61
|
53
|
57
|
71
|
51
|
41
|
68
|
70
|
89
|
103
|
155
|
|||
|
2025/01
|
127
|
62
|
79
|
140
|
100
|
49
|
53
|
53
|
46
|
64
|
72
|
55
|
82
|
100
|
54
|
59
|
86
|
94
|
110
|
122
|
199
|
79
|
74
|
94
|
102
|
73
|
27
|
48
|
186
|
126
|
78
|
|
2024/12
|
93
|
48
|
54
|
128
|
106
|
89
|
44
|
63
|
92
|
149
|
89
|
96
|
87
|
72
|
58
|
66
|
80
|
49
|
52
|
67
|
45
|
50
|
77
|
132
|
185
|
92
|
64
|
51
|
71
|
84
|
103
|
|
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