Air Quality
Excellent
No health implications.
17
PM2.5
43
PM10
6
O3
0.5
CO
4
SO2
31
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
23 Oct
51
Good
Thu
24 Oct
56
Good
Fri
25 Oct
70
Good
Sat
26 Oct
52
Good
Sun
27 Oct
53
Good
Mon
28 Oct
62
Good
Air quality in the last 12 months (Yanchuan)
|
2024/09
|
40
|
46
|
39
|
43
|
29
|
47
|
26
|
47
|
59
|
39
|
39
|
41
|
45
|
31
|
49
|
42
|
42
|
45
|
43
|
26
|
25
|
46
|
55
|
58
|
59
|
61
|
80
|
63
|
29
|
31
|
|
|
2024/08
|
38
|
48
|
35
|
35
|
35
|
30
|
19
|
34
|
43
|
86
|
34
|
38
|
43
|
43
|
41
|
38
|
41
|
27
|
36
|
35
|
37
|
46
|
52
|
53
|
50
|
18
|
34
|
40
|
47
|
46
|
50
|
|
2024/07
|
39
|
43
|
36
|
31
|
39
|
43
|
48
|
47
|
41
|
41
|
46
|
45
|
51
|
58
|
44
|
24
|
33
|
32
|
38
|
23
|
54
|
59
|
43
|
23
|
49
|
48
|
51
|
54
|
48
|
26
|
36
|
|
2024/06
|
58
|
43
|
43
|
46
|
35
|
53
|
40
|
44
|
49
|
49
|
60
|
57
|
65
|
58
|
55
|
54
|
42
|
44
|
46
|
50
|
43
|
68
|
75
|
91
|
84
|
86
|
64
|
67
|
58
|
44
|
|
|
2024/05
|
44
|
49
|
55
|
35
|
46
|
49
|
49
|
56
|
62
|
73
|
140
|
58
|
53
|
64
|
73
|
62
|
87
|
82
|
61
|
65
|
63
|
63
|
55
|
65
|
52
|
53
|
50
|
50
|
48
|
62
|
58
|
|
2024/04
|
80
|
62
|
55
|
67
|
74
|
68
|
69
|
66
|
64
|
56
|
55
|
61
|
56
|
66
|
92
|
59
|
73
|
74
|
62
|
59
|
67
|
127
|
120
|
83
|
74
|
74
|
68
|
64
|
51
|
40
|
|
|
2024/03
|
55
|
67
|
65
|
77
|
80
|
60
|
89
|
56
|
74
|
80
|
75
|
56
|
74
|
72
|
74
|
139
|
81
|
177
|
86
|
72
|
85
|
140
|
121
|
37
|
53
|
59
|
85
|
104
|
91
|
63
|
72
|
|
2024/02
|
133
|
126
|
120
|
106
|
110
|
101
|
92
|
104
|
132
|
174
|
72
|
72
|
74
|
141
|
74
|
63
|
62
|
370
|
250
|
52
|
51
|
67
|
58
|
82
|
103
|
107
|
92
|
92
|
64
|
||
|
2024/01
|
74
|
74
|
69
|
67
|
66
|
59
|
57
|
80
|
79
|
69
|
79
|
82
|
87
|
80
|
64
|
92
|
92
|
89
|
98
|
68
|
26
|
33
|
51
|
52
|
61
|
70
|
68
|
71
|
75
|
89
|
110
|
|
2023/12
|
55
|
67
|
77
|
82
|
121
|
157
|
108
|
96
|
83
|
84
|
56
|
75
|
67
|
54
|
48
|
46
|
46
|
66
|
68
|
49
|
38
|
56
|
64
|
65
|
71
|
83
|
102
|
124
|
160
|
115
|
67
|
|
2023/11
|
72
|
94
|
82
|
68
|
50
|
53
|
65
|
72
|
66
|
53
|
53
|
45
|
61
|
66
|
85
|
97
|
64
|
65
|
77
|
77
|
91
|
104
|
52
|
57
|
72
|
86
|
86
|
68
|
43
|
45
|
|
|
2023/10
|
53
|
45
|
47
|
59
|
52
|
38
|
49
|
47
|
48
|
54
|
64
|
64
|
62
|
56
|
59
|
62
|
66
|
58
|
54
|
52
|
52
|
61
|
69
|
70
|
77
|
74
|
69
|
73
|
73
|
73
|
74
|
|
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