Air Quality
Excellent
No health implications.
26
PM2.5
32
PM10
33
O3
0.6
CO
7
SO2
24
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
12 Dec
132
Light
Sat
13 Dec
86
Good
Sun
14 Dec
61
Good
Mon
15 Dec
81
Good
Tue
16 Dec
93
Good
Wed
17 Dec
145
Light
Thu
18 Dec
34
Excellent
Air quality in the last 12 months (Yichuan)
|
2025/11
|
49
|
64
|
90
|
139
|
126
|
113
|
54
|
37
|
72
|
92
|
94
|
81
|
70
|
74
|
73
|
76
|
28
|
26
|
32
|
46
|
55
|
58
|
73
|
110
|
87
|
119
|
204
|
101
|
81
|
82
|
|
|
2025/10
|
23
|
13
|
32
|
38
|
19
|
17
|
28
|
38
|
14
|
22
|
30
|
34
|
36
|
60
|
55
|
56
|
16
|
30
|
51
|
41
|
45
|
73
|
90
|
123
|
73
|
56
|
121
|
111
|
136
|
133
|
116
|
|
2025/09
|
29
|
37
|
28
|
16
|
22
|
48
|
47
|
27
|
24
|
41
|
16
|
23
|
33
|
31
|
44
|
34
|
26
|
18
|
12
|
21
|
37
|
12
|
14
|
19
|
33
|
38
|
21
|
17
|
25
|
34
|
|
|
2025/08
|
30
|
31
|
30
|
35
|
37
|
25
|
33
|
21
|
14
|
22
|
20
|
34
|
37
|
30
|
30
|
19
|
31
|
37
|
27
|
25
|
26
|
34
|
34
|
29
|
53
|
43
|
41
|
25
|
17
|
21
|
24
|
|
2025/07
|
15
|
18
|
22
|
29
|
17
|
23
|
25
|
36
|
33
|
42
|
53
|
54
|
45
|
36
|
35
|
44
|
33
|
42
|
40
|
37
|
26
|
28
|
19
|
22
|
27
|
30
|
29
|
29
|
30
|
29
|
32
|
|
2025/06
|
45
|
48
|
45
|
41
|
46
|
44
|
47
|
52
|
46
|
62
|
62
|
49
|
51
|
38
|
39
|
51
|
51
|
23
|
27
|
39
|
36
|
46
|
36
|
48
|
47
|
25
|
37
|
26
|
33
|
27
|
|
|
2025/05
|
69
|
91
|
64
|
56
|
114
|
205
|
149
|
94
|
84
|
48
|
41
|
51
|
64
|
62
|
52
|
58
|
107
|
92
|
92
|
70
|
77
|
66
|
88
|
65
|
54
|
48
|
72
|
71
|
74
|
52
|
43
|
|
2025/04
|
61
|
63
|
65
|
85
|
67
|
78
|
75
|
89
|
97
|
99
|
89
|
275
|
105
|
60
|
49
|
99
|
115
|
102
|
71
|
89
|
63
|
153
|
130
|
72
|
75
|
77
|
65
|
49
|
50
|
107
|
|
|
2025/03
|
117
|
46
|
43
|
59
|
88
|
105
|
86
|
85
|
109
|
113
|
95
|
126
|
155
|
82
|
48
|
47
|
39
|
48
|
44
|
39
|
45
|
62
|
83
|
211
|
106
|
164
|
116
|
143
|
90
|
55
|
65
|
|
2025/02
|
115
|
137
|
73
|
42
|
41
|
52
|
68
|
37
|
82
|
119
|
138
|
70
|
63
|
74
|
73
|
69
|
87
|
105
|
76
|
87
|
125
|
142
|
136
|
119
|
87
|
78
|
113
|
157
|
|||
|
2025/01
|
129
|
187
|
172
|
150
|
99
|
63
|
52
|
51
|
73
|
77
|
67
|
62
|
88
|
78
|
39
|
50
|
79
|
98
|
99
|
103
|
173
|
229
|
95
|
108
|
106
|
70
|
40
|
81
|
195
|
184
|
142
|
|
2024/12
|
57
|
64
|
68
|
107
|
49
|
57
|
58
|
70
|
120
|
139
|
123
|
144
|
67
|
48
|
46
|
71
|
99
|
100
|
95
|
91
|
53
|
83
|
112
|
133
|
98
|
115
|
93
|
40
|
65
|
67
|
77
|
|
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