Air Quality
Good
Some pollutants may slightly affect very few hypersensitive individuals.
50
*
PM2.5
80
PM10
33
O3
0.6
CO
3
SO2
21
NO2
Some pollutants may slightly affect very few hypersensitive individuals.
Advise
Only very few hypersensitive people should reduce outdoor activities.
Air Quality
Today
2 Mar
126
Light
Tue
3 Mar
161
Moderate
Wed
4 Mar
153
Moderate
Thu
5 Mar
104
Light
Fri
6 Mar
114
Light
Sat
7 Mar
44
Excellent
Sun
8 Mar
21
Excellent
Air quality in the last 12 months (Cheng'an)
|
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
|
|
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
|
|||
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1
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2
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3
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4
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5
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6
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7
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8
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9
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10
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11
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12
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13
|
14
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15
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16
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17
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18
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19
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20
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21
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22
|
23
|
24
|
25
|
26
|
27
|
28
|
29
|
30
|
31
|
- Excellent
- Good
- Lightly
- Moderately
- Heavily
- Severely
Air quality source: CNEMC
*: primary pollution