Air Quality
Excellent
No health implications.
18
PM2.5
37
PM10
59
O3
0.5
CO
6
SO2
11
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
17 Jan
101
Light
Sun
18 Jan
53
Good
Mon
19 Jan
52
Good
Tue
20 Jan
53
Good
Wed
21 Jan
60
Good
Thu
22 Jan
105
Light
Fri
23 Jan
27
Excellent
Air quality in the last 12 months (Siyang)
|
2025/11
|
178
|
98
|
41
|
54
|
43
|
47
|
50
|
22
|
82
|
59
|
39
|
53
|
102
|
139
|
129
|
110
|
36
|
50
|
62
|
69
|
130
|
136
|
114
|
112
|
67
|
73
|
205
|
140
|
93
|
114
|
|
|
2025/10
|
42
|
33
|
20
|
33
|
44
|
55
|
33
|
36
|
27
|
57
|
63
|
28
|
18
|
45
|
23
|
20
|
28
|
24
|
30
|
28
|
25
|
32
|
41
|
50
|
67
|
77
|
59
|
44
|
34
|
30
|
79
|
|
2025/09
|
21
|
22
|
27
|
26
|
34
|
33
|
49
|
34
|
28
|
27
|
28
|
22
|
26
|
32
|
40
|
38
|
18
|
18
|
14
|
28
|
36
|
21
|
34
|
15
|
30
|
26
|
26
|
35
|
51
|
44
|
|
|
2025/08
|
14
|
11
|
26
|
32
|
24
|
37
|
24
|
25
|
24
|
13
|
13
|
19
|
24
|
32
|
29
|
31
|
34
|
35
|
36
|
32
|
43
|
37
|
30
|
23
|
16
|
24
|
28
|
35
|
39
|
30
|
14
|
|
2025/07
|
33
|
27
|
36
|
35
|
38
|
39
|
42
|
17
|
26
|
52
|
45
|
33
|
37
|
27
|
40
|
37
|
32
|
44
|
32
|
26
|
20
|
25
|
22
|
23
|
28
|
26
|
25
|
17
|
22
|
21
|
16
|
|
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
|
|
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