Air Quality
Excellent
No health implications.
22
PM2.5
38
PM10
97
O3
0.4
CO
4
SO2
13
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
29 Apr
60
Good
Thu
30 Apr
93
Good
Fri
1 May
85
Good
Sat
2 May
54
Good
Sun
3 May
79
Good
Mon
4 May
91
Good
Tue
5 May
16
Excellent
Air quality in the last 12 months (Xiaochang)
|
2026/03
|
28
|
34
|
50
|
91
|
78
|
65
|
86
|
71
|
83
|
85
|
72
|
96
|
66
|
83
|
69
|
58
|
46
|
58
|
83
|
85
|
79
|
71
|
80
|
81
|
83
|
91
|
70
|
59
|
69
|
45
|
66
|
|
2026/02
|
68
|
91
|
89
|
90
|
113
|
126
|
65
|
73
|
62
|
72
|
91
|
96
|
77
|
74
|
90
|
38
|
99
|
91
|
95
|
61
|
56
|
108
|
112
|
42
|
39
|
25
|
55
|
44
|
|||
|
2026/01
|
47
|
72
|
83
|
78
|
93
|
63
|
54
|
59
|
73
|
96
|
75
|
79
|
98
|
101
|
104
|
125
|
149
|
90
|
29
|
52
|
50
|
81
|
91
|
102
|
117
|
162
|
100
|
88
|
77
|
49
|
54
|
|
2025/12
|
104
|
89
|
54
|
62
|
83
|
95
|
112
|
104
|
139
|
149
|
199
|
88
|
45
|
58
|
67
|
81
|
175
|
192
|
153
|
160
|
72
|
52
|
49
|
96
|
74
|
72
|
84
|
101
|
103
|
156
|
74
|
|
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
|
|
|
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