Air Quality
Excellent
No health implications.
20
PM2.5
29
PM10
73
O3
0.5
CO
6
SO2
20
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
19 May
64
Good
Mon
20 May
59
Good
Tue
21 May
75
Good
Wed
22 May
93
Good
Thu
23 May
109
Lightly
Fri
24 May
100
Good
Sat
25 May
100
Good
Air quality in the last 12 months (Yuan'an)
|
2024/02
|
74
|
51
|
50
|
69
|
98
|
102
|
95
|
113
|
120
|
176
|
111
|
96
|
78
|
78
|
60
|
70
|
59
|
59
|
258
|
16
|
25
|
32
|
34
|
49
|
79
|
86
|
74
|
75
|
74
|
||
|
2024/01
|
105
|
76
|
51
|
84
|
97
|
133
|
130
|
106
|
123
|
118
|
148
|
156
|
153
|
174
|
88
|
77
|
64
|
63
|
42
|
53
|
81
|
45
|
46
|
50
|
73
|
81
|
89
|
113
|
121
|
121
|
156
|
|
2023/12
|
55
|
72
|
76
|
86
|
80
|
71
|
71
|
68
|
88
|
61
|
23
|
51
|
52
|
23
|
33
|
53
|
53
|
51
|
58
|
108
|
89
|
67
|
89
|
122
|
133
|
120
|
156
|
199
|
212
|
203
|
94
|
|
2023/11
|
48
|
59
|
68
|
54
|
33
|
31
|
39
|
45
|
59
|
75
|
37
|
46
|
47
|
57
|
79
|
86
|
76
|
61
|
64
|
66
|
92
|
83
|
77
|
58
|
56
|
68
|
72
|
77
|
89
|
57
|
|
|
2023/10
|
30
|
23
|
19
|
22
|
29
|
28
|
26
|
30
|
32
|
36
|
36
|
48
|
48
|
43
|
41
|
56
|
69
|
88
|
39
|
30
|
43
|
55
|
72
|
75
|
64
|
30
|
44
|
42
|
40
|
36
|
40
|
|
2023/09
|
42
|
40
|
45
|
49
|
43
|
39
|
42
|
42
|
50
|
47
|
26
|
25
|
27
|
39
|
37
|
41
|
48
|
56
|
36
|
28
|
27
|
26
|
19
|
19
|
19
|
23
|
30
|
24
|
22
|
18
|
|
|
2023/08
|
27
|
34
|
36
|
42
|
39
|
31
|
33
|
36
|
41
|
43
|
54
|
50
|
29
|
34
|
40
|
48
|
49
|
49
|
50
|
45
|
36
|
37
|
45
|
45
|
53
|
49
|
28
|
28
|
32
|
37
|
42
|
|
2023/07
|
32
|
43
|
36
|
28
|
40
|
32
|
31
|
37
|
31
|
29
|
35
|
36
|
30
|
27
|
41
|
42
|
43
|
43
|
38
|
26
|
29
|
32
|
40
|
40
|
25
|
29
|
32
|
28
|
24
|
24
|
28
|
|
2023/06
|
45
|
50
|
39
|
28
|
19
|
32
|
40
|
33
|
47
|
51
|
58
|
37
|
45
|
59
|
54
|
38
|
21
|
20
|
25
|
34
|
38
|
31
|
37
|
46
|
42
|
46
|
40
|
29
|
28
|
32
|
|
|
2023/05
|
79
|
61
|
58
|
29
|
31
|
27
|
35
|
37
|
45
|
32
|
34
|
49
|
57
|
66
|
78
|
59
|
36
|
52
|
54
|
45
|
47
|
23
|
23
|
32
|
53
|
47
|
30
|
34
|
29
|
27
|
37
|
|
2023/04
|
60
|
58
|
24
|
23
|
32
|
62
|
103
|
89
|
72
|
69
|
95
|
167
|
131
|
74
|
67
|
61
|
64
|
53
|
72
|
64
|
68
|
26
|
21
|
20
|
28
|
35
|
45
|
50
|
111
|
101
|
|
|
2023/03
|
119
|
82
|
101
|
77
|
83
|
62
|
53
|
71
|
64
|
57
|
55
|
112
|
82
|
60
|
91
|
55
|
25
|
44
|
68
|
69
|
61
|
77
|
146
|
111
|
80
|
77
|
67
|
73
|
72
|
66
|
67
|
|
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