Air Quality
Excellent
No health implications.
16
PM2.5
26
PM10
132
O3
0.6
CO
8
SO2
7
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
20 Aug
87
Good
Thu
21 Aug
95
Good
Fri
22 Aug
95
Good
Sat
23 Aug
93
Good
Sun
24 Aug
98
Good
Mon
25 Aug
99
Good
Tue
26 Aug
20
Excellent
Air quality in the last 12 months (Siyang)
|
2025/06
|
30
|
14
|
52
|
66
|
65
|
61
|
45
|
45
|
36
|
48
|
46
|
33
|
53
|
31
|
35
|
55
|
40
|
49
|
22
|
12
|
21
|
39
|
33
|
32
|
34
|
58
|
29
|
25
|
18
|
21
|
|
|
2025/05
|
57
|
62
|
45
|
42
|
34
|
66
|
65
|
45
|
13
|
27
|
45
|
47
|
53
|
68
|
75
|
39
|
70
|
55
|
76
|
62
|
44
|
63
|
65
|
58
|
53
|
59
|
56
|
49
|
46
|
56
|
68
|
|
2025/04
|
56
|
54
|
44
|
76
|
62
|
61
|
65
|
79
|
83
|
67
|
78
|
138
|
80
|
61
|
49
|
60
|
68
|
79
|
83
|
50
|
45
|
54
|
76
|
81
|
59
|
49
|
55
|
48
|
55
|
61
|
|
|
2025/03
|
97
|
36
|
37
|
58
|
88
|
70
|
80
|
102
|
98
|
74
|
119
|
141
|
87
|
54
|
46
|
39
|
50
|
42
|
49
|
61
|
57
|
59
|
73
|
98
|
100
|
86
|
111
|
103
|
76
|
56
|
57
|
|
2025/02
|
66
|
99
|
105
|
65
|
59
|
51
|
52
|
37
|
53
|
69
|
90
|
107
|
52
|
88
|
108
|
109
|
47
|
52
|
49
|
40
|
44
|
63
|
55
|
61
|
83
|
118
|
148
|
150
|
|||
|
2025/01
|
86
|
141
|
70
|
83
|
150
|
90
|
57
|
78
|
44
|
53
|
84
|
114
|
103
|
138
|
61
|
71
|
114
|
118
|
153
|
167
|
180
|
104
|
53
|
41
|
45
|
100
|
43
|
66
|
123
|
108
|
99
|
|
2024/12
|
83
|
111
|
54
|
92
|
148
|
185
|
125
|
45
|
64
|
94
|
70
|
58
|
102
|
68
|
81
|
99
|
142
|
56
|
71
|
98
|
95
|
58
|
75
|
105
|
132
|
108
|
73
|
69
|
71
|
109
|
85
|
|
2024/11
|
48
|
92
|
111
|
71
|
44
|
57
|
41
|
40
|
49
|
49
|
71
|
89
|
93
|
71
|
67
|
57
|
33
|
31
|
30
|
50
|
83
|
76
|
36
|
44
|
30
|
44
|
63
|
60
|
59
|
72
|
|
|
2024/10
|
22
|
32
|
42
|
39
|
34
|
32
|
26
|
42
|
44
|
65
|
83
|
89
|
48
|
72
|
87
|
68
|
28
|
19
|
33
|
41
|
50
|
62
|
55
|
53
|
56
|
42
|
68
|
53
|
60
|
72
|
55
|
|
2024/09
|
43
|
33
|
29
|
29
|
47
|
32
|
26
|
23
|
24
|
25
|
24
|
15
|
36
|
40
|
29
|
32
|
16
|
20
|
20
|
16
|
24
|
34
|
30
|
39
|
38
|
39
|
43
|
24
|
31
|
34
|
|
|
2024/08
|
22
|
20
|
28
|
36
|
32
|
22
|
21
|
20
|
39
|
40
|
90
|
54
|
47
|
29
|
27
|
25
|
26
|
26
|
22
|
14
|
36
|
45
|
43
|
48
|
36
|
36
|
17
|
22
|
27
|
30
|
32
|
|
2024/07
|
31
|
25
|
36
|
14
|
30
|
29
|
26
|
24
|
24
|
65
|
72
|
54
|
24
|
21
|
17
|
43
|
35
|
14
|
22
|
20
|
27
|
32
|
36
|
47
|
23
|
22
|
21
|
20
|
23
|
33
|
31
|
|
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