Air Quality
Excellent
No health implications.
11
PM2.5
19
PM10
44
O3
0.5
CO
5
SO2
18
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
2 Oct
55
Good
Fri
3 Oct
66
Good
Sat
4 Oct
56
Good
Sun
5 Oct
41
Excellent
Mon
6 Oct
42
Excellent
Tue
7 Oct
45
Excellent
Wed
8 Oct
24
Excellent
Air quality in the last 12 months (Yichuan)
|
2025/08
|
40
|
46
|
48
|
41
|
32
|
40
|
41
|
37
|
27
|
33
|
40
|
43
|
46
|
49
|
37
|
19
|
35
|
38
|
36
|
27
|
38
|
44
|
24
|
28
|
41
|
39
|
26
|
22
|
27
|
37
|
37
|
|
2025/07
|
30
|
24
|
28
|
34
|
25
|
36
|
31
|
37
|
42
|
43
|
48
|
53
|
50
|
44
|
50
|
48
|
45
|
48
|
45
|
28
|
35
|
46
|
29
|
26
|
28
|
28
|
31
|
41
|
42
|
38
|
40
|
|
2025/06
|
44
|
43
|
42
|
50
|
50
|
54
|
59
|
48
|
60
|
56
|
57
|
54
|
57
|
45
|
46
|
50
|
48
|
43
|
27
|
36
|
35
|
41
|
43
|
47
|
47
|
32
|
37
|
28
|
41
|
30
|
|
|
2025/05
|
76
|
95
|
47
|
88
|
230
|
268
|
139
|
103
|
61
|
48
|
51
|
59
|
64
|
68
|
62
|
93
|
182
|
86
|
74
|
67
|
70
|
144
|
55
|
52
|
47
|
40
|
47
|
55
|
58
|
57
|
41
|
|
2025/04
|
70
|
70
|
81
|
103
|
70
|
88
|
101
|
107
|
100
|
63
|
154
|
191
|
128
|
58
|
57
|
114
|
122
|
88
|
68
|
72
|
124
|
159
|
101
|
59
|
63
|
62
|
54
|
49
|
62
|
118
|
|
|
2025/03
|
87
|
78
|
34
|
46
|
65
|
69
|
71
|
78
|
69
|
75
|
172
|
197
|
95
|
71
|
45
|
39
|
48
|
46
|
48
|
49
|
60
|
73
|
119
|
260
|
237
|
273
|
201
|
165
|
64
|
59
|
63
|
|
2025/02
|
125
|
95
|
38
|
53
|
38
|
89
|
55
|
37
|
58
|
72
|
75
|
76
|
73
|
78
|
77
|
77
|
75
|
81
|
74
|
78
|
91
|
78
|
51
|
55
|
70
|
70
|
74
|
75
|
|||
|
2025/01
|
95
|
72
|
73
|
92
|
102
|
57
|
56
|
55
|
54
|
68
|
75
|
72
|
95
|
62
|
44
|
61
|
84
|
95
|
92
|
97
|
100
|
114
|
138
|
129
|
59
|
71
|
38
|
79
|
153
|
107
|
127
|
|
2024/12
|
70
|
68
|
62
|
67
|
57
|
63
|
50
|
55
|
73
|
78
|
78
|
84
|
62
|
58
|
65
|
75
|
84
|
63
|
74
|
79
|
46
|
65
|
88
|
111
|
113
|
75
|
54
|
60
|
75
|
86
|
81
|
|
2024/11
|
69
|
61
|
68
|
56
|
62
|
66
|
80
|
85
|
85
|
105
|
102
|
95
|
55
|
48
|
69
|
67
|
49
|
51
|
44
|
59
|
70
|
86
|
102
|
96
|
50
|
48
|
70
|
52
|
51
|
62
|
|
|
2024/10
|
67
|
53
|
49
|
58
|
63
|
76
|
66
|
62
|
79
|
58
|
64
|
63
|
59
|
75
|
70
|
96
|
65
|
35
|
30
|
24
|
32
|
32
|
50
|
58
|
65
|
63
|
57
|
60
|
68
|
63
|
62
|
|
2024/09
|
47
|
50
|
39
|
42
|
34
|
43
|
30
|
45
|
52
|
45
|
40
|
37
|
46
|
32
|
48
|
41
|
40
|
45
|
38
|
29
|
26
|
46
|
53
|
64
|
74
|
69
|
81
|
62
|
33
|
26
|
|
|
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