Air Quality
Excellent
No health implications.
21
PM2.5
43
PM10
110
O3
0.4
CO
9
SO2
10
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
1 Apr
88
Good
Thu
2 Apr
94
Good
Fri
3 Apr
105
Light
Sat
4 Apr
88
Good
Sun
5 Apr
83
Good
Mon
6 Apr
86
Good
Tue
7 Apr
41
Excellent
Air quality in the last 12 months (Yichuan)
|
2026/02
|
109
|
74
|
121
|
94
|
94
|
66
|
57
|
82
|
85
|
91
|
98
|
100
|
95
|
80
|
78
|
35
|
79
|
62
|
57
|
53
|
96
|
221
|
206
|
56
|
53
|
48
|
68
|
67
|
|||
|
2026/01
|
73
|
120
|
131
|
99
|
55
|
38
|
45
|
55
|
55
|
72
|
64
|
71
|
75
|
86
|
78
|
109
|
86
|
70
|
63
|
82
|
127
|
130
|
138
|
226
|
185
|
178
|
165
|
173
|
202
|
150
|
134
|
|
2025/12
|
137
|
108
|
52
|
74
|
110
|
108
|
97
|
86
|
133
|
162
|
144
|
52
|
89
|
65
|
65
|
112
|
188
|
181
|
158
|
119
|
109
|
95
|
99
|
85
|
55
|
102
|
105
|
114
|
86
|
164
|
75
|
|
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
|
|
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