Air Quality
Excellent
No health implications.
25
PM2.5
40
PM10
23
O3
0.6
CO
3
SO2
13
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
13 Dec
62
Good
Sun
14 Dec
66
Good
Mon
15 Dec
65
Good
Tue
16 Dec
90
Good
Wed
17 Dec
139
Light
Thu
18 Dec
139
Light
Fri
19 Dec
17
Excellent
Air quality in the last 12 months (Xiaochang)
|
2025/11
|
68
|
81
|
82
|
74
|
76
|
67
|
22
|
34
|
61
|
71
|
60
|
40
|
49
|
84
|
85
|
99
|
50
|
26
|
30
|
45
|
65
|
79
|
105
|
107
|
89
|
74
|
109
|
87
|
77
|
86
|
|
|
2025/10
|
33
|
31
|
14
|
35
|
53
|
49
|
28
|
44
|
55
|
26
|
22
|
30
|
14
|
26
|
30
|
23
|
17
|
13
|
20
|
25
|
27
|
35
|
39
|
42
|
74
|
70
|
59
|
65
|
83
|
45
|
47
|
|
2025/09
|
18
|
27
|
28
|
35
|
34
|
29
|
41
|
35
|
21
|
21
|
20
|
14
|
17
|
20
|
25
|
36
|
18
|
15
|
12
|
17
|
31
|
23
|
10
|
13
|
19
|
15
|
27
|
34
|
16
|
22
|
|
|
2025/08
|
29
|
18
|
29
|
38
|
36
|
26
|
20
|
17
|
19
|
15
|
12
|
19
|
18
|
26
|
24
|
25
|
31
|
35
|
23
|
16
|
17
|
20
|
23
|
27
|
33
|
29
|
34
|
34
|
41
|
25
|
17
|
|
2025/07
|
18
|
15
|
15
|
20
|
28
|
36
|
29
|
35
|
18
|
24
|
42
|
27
|
20
|
24
|
31
|
31
|
32
|
30
|
32
|
27
|
20
|
14
|
15
|
23
|
22
|
22
|
18
|
16
|
18
|
27
|
27
|
|
2025/06
|
24
|
32
|
51
|
56
|
49
|
49
|
26
|
30
|
28
|
24
|
32
|
41
|
35
|
25
|
34
|
45
|
29
|
18
|
11
|
14
|
16
|
16
|
24
|
22
|
27
|
14
|
15
|
15
|
12
|
19
|
|
|
2025/05
|
50
|
63
|
52
|
49
|
42
|
114
|
132
|
48
|
57
|
46
|
49
|
49
|
58
|
74
|
65
|
48
|
65
|
143
|
97
|
45
|
37
|
31
|
60
|
57
|
54
|
58
|
59
|
58
|
41
|
38
|
14
|
|
2025/04
|
67
|
74
|
64
|
97
|
86
|
73
|
71
|
73
|
69
|
59
|
57
|
204
|
126
|
100
|
61
|
61
|
71
|
72
|
59
|
54
|
45
|
56
|
70
|
73
|
75
|
57
|
50
|
50
|
45
|
41
|
|
|
2025/03
|
98
|
50
|
25
|
44
|
55
|
79
|
94
|
96
|
104
|
94
|
79
|
95
|
95
|
56
|
46
|
54
|
44
|
54
|
51
|
57
|
57
|
63
|
75
|
68
|
55
|
69
|
116
|
73
|
73
|
75
|
77
|
|
2025/02
|
84
|
77
|
102
|
92
|
66
|
46
|
85
|
53
|
59
|
76
|
87
|
99
|
83
|
95
|
90
|
98
|
77
|
66
|
100
|
99
|
79
|
94
|
125
|
120
|
109
|
107
|
75
|
93
|
|||
|
2025/01
|
144
|
169
|
166
|
212
|
89
|
86
|
62
|
69
|
56
|
60
|
83
|
96
|
109
|
127
|
69
|
70
|
86
|
106
|
169
|
133
|
141
|
160
|
188
|
78
|
26
|
50
|
64
|
76
|
194
|
93
|
130
|
|
2024/12
|
83
|
98
|
115
|
87
|
63
|
62
|
67
|
63
|
58
|
84
|
86
|
106
|
91
|
58
|
64
|
83
|
107
|
83
|
76
|
111
|
94
|
55
|
72
|
98
|
122
|
138
|
174
|
57
|
73
|
114
|
123
|
|
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