Air Quality
Excellent
No health implications.
9
PM2.5
8
PM10
37
O3
0.6
CO
9
SO2
16
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
17 May
38
Excellent
Mon
18 May
41
Excellent
Tue
19 May
39
Excellent
Wed
20 May
62
Good
Thu
21 May
59
Good
Fri
22 May
29
Excellent
Sat
23 May
25
Excellent
Air quality in the last 12 months (Yidu)
|
2026/04
|
48
|
41
|
29
|
54
|
61
|
53
|
54
|
62
|
40
|
34
|
30
|
48
|
44
|
37
|
50
|
49
|
51
|
47
|
50
|
97
|
36
|
25
|
28
|
50
|
55
|
60
|
52
|
26
|
31
|
38
|
|
|
2026/03
|
21
|
23
|
36
|
70
|
74
|
104
|
84
|
55
|
62
|
69
|
66
|
89
|
79
|
76
|
28
|
19
|
31
|
32
|
72
|
89
|
57
|
64
|
61
|
52
|
51
|
29
|
33
|
48
|
72
|
32
|
43
|
|
2026/02
|
102
|
96
|
117
|
150
|
155
|
134
|
105
|
95
|
92
|
87
|
88
|
81
|
100
|
92
|
93
|
26
|
77
|
65
|
69
|
59
|
57
|
74
|
82
|
59
|
52
|
32
|
32
|
59
|
|||
|
2026/01
|
41
|
61
|
91
|
89
|
82
|
76
|
71
|
68
|
74
|
61
|
73
|
84
|
86
|
101
|
119
|
113
|
131
|
145
|
48
|
46
|
56
|
75
|
79
|
97
|
80
|
99
|
118
|
132
|
73
|
57
|
82
|
|
2025/12
|
74
|
105
|
81
|
72
|
79
|
79
|
85
|
71
|
81
|
145
|
156
|
127
|
38
|
54
|
65
|
79
|
89
|
98
|
104
|
76
|
31
|
62
|
40
|
55
|
59
|
68
|
74
|
98
|
107
|
103
|
79
|
|
2025/11
|
52
|
42
|
58
|
90
|
90
|
75
|
28
|
21
|
27
|
45
|
52
|
50
|
57
|
67
|
78
|
84
|
39
|
27
|
28
|
41
|
43
|
54
|
64
|
45
|
52
|
60
|
59
|
67
|
64
|
80
|
|
|
2025/10
|
41
|
25
|
23
|
37
|
40
|
62
|
47
|
54
|
103
|
73
|
47
|
41
|
18
|
19
|
33
|
24
|
28
|
14
|
25
|
17
|
18
|
33
|
36
|
44
|
59
|
61
|
62
|
61
|
79
|
92
|
77
|
|
2025/09
|
16
|
29
|
35
|
23
|
38
|
17
|
35
|
37
|
20
|
27
|
31
|
21
|
17
|
21
|
33
|
28
|
25
|
13
|
19
|
18
|
26
|
27
|
18
|
22
|
23
|
16
|
29
|
33
|
18
|
29
|
|
|
2025/08
|
33
|
33
|
42
|
47
|
35
|
39
|
27
|
20
|
14
|
12
|
12
|
11
|
13
|
21
|
17
|
15
|
23
|
30
|
32
|
21
|
19
|
22
|
24
|
20
|
19
|
20
|
23
|
38
|
38
|
24
|
15
|
|
2025/07
|
24
|
19
|
16
|
19
|
25
|
30
|
25
|
30
|
26
|
19
|
33
|
35
|
26
|
33
|
32
|
29
|
26
|
21
|
26
|
29
|
23
|
20
|
10
|
17
|
23
|
25
|
20
|
17
|
18
|
20
|
25
|
|
2025/06
|
12
|
23
|
32
|
37
|
41
|
46
|
34
|
20
|
24
|
32
|
28
|
26
|
35
|
33
|
31
|
42
|
34
|
18
|
12
|
13
|
14
|
23
|
23
|
27
|
18
|
17
|
31
|
26
|
23
|
22
|
|
|
2025/05
|
57
|
71
|
60
|
43
|
43
|
170
|
145
|
32
|
31
|
54
|
48
|
56
|
70
|
55
|
47
|
40
|
57
|
98
|
68
|
52
|
49
|
25
|
46
|
62
|
66
|
64
|
61
|
42
|
47
|
33
|
21
|
|
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