Air Quality
Excellent
No health implications.
4
PM2.5
10
PM10
47
O3
0.5
CO
7
SO2
6
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
29 Jun
56
Good
Mon
30 Jun
68
Good
Tue
1 Jul
74
Good
Wed
2 Jul
76
Good
Thu
3 Jul
90
Good
Fri
4 Jul
22
Excellent
Sat
5 Jul
16
Excellent
Air quality in the last 12 months (Xiaochang)
|
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
|
|
2024/11
|
121
|
110
|
115
|
98
|
58
|
68
|
61
|
67
|
68
|
61
|
68
|
71
|
61
|
81
|
109
|
66
|
30
|
30
|
31
|
41
|
51
|
67
|
92
|
75
|
38
|
38
|
53
|
58
|
58
|
71
|
|
|
2024/10
|
35
|
60
|
45
|
47
|
64
|
43
|
26
|
41
|
64
|
110
|
92
|
84
|
69
|
62
|
91
|
65
|
35
|
18
|
31
|
41
|
32
|
33
|
49
|
57
|
50
|
55
|
110
|
136
|
94
|
79
|
50
|
|
2024/09
|
41
|
48
|
33
|
38
|
47
|
38
|
42
|
46
|
47
|
41
|
46
|
26
|
21
|
34
|
45
|
35
|
39
|
30
|
21
|
34
|
38
|
35
|
39
|
42
|
63
|
55
|
62
|
43
|
41
|
45
|
|
|
2024/08
|
12
|
15
|
20
|
17
|
19
|
21
|
23
|
30
|
27
|
30
|
81
|
63
|
29
|
33
|
26
|
21
|
28
|
40
|
27
|
21
|
22
|
35
|
29
|
31
|
30
|
36
|
19
|
22
|
32
|
31
|
37
|
|
2024/07
|
29
|
28
|
26
|
19
|
19
|
17
|
20
|
19
|
19
|
21
|
26
|
28
|
13
|
11
|
30
|
35
|
24
|
17
|
17
|
17
|
19
|
21
|
22
|
33
|
28
|
22
|
15
|
11
|
12
|
17
|
15
|
|
2024/06
|
44
|
43
|
34
|
34
|
32
|
44
|
38
|
42
|
32
|
26
|
27
|
33
|
38
|
38
|
39
|
43
|
37
|
36
|
18
|
22
|
23
|
22
|
25
|
44
|
31
|
36
|
23
|
10
|
14
|
23
|
|
|
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