Air Quality
Excellent
No health implications.
10
PM2.5
11
PM10
40
O3
0.6
CO
4
SO2
10
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
18 May
35
Excellent
Tue
19 May
34
Excellent
Wed
20 May
42
Excellent
Thu
21 May
48
Excellent
Fri
22 May
40
Excellent
Sat
23 May
50
Excellent
Sun
24 May
41
Excellent
Air quality in the last 12 months (Xiaochang)
|
2026/04
|
57
|
56
|
37
|
67
|
78
|
82
|
67
|
53
|
24
|
40
|
58
|
50
|
28
|
25
|
31
|
37
|
46
|
58
|
59
|
71
|
39
|
26
|
32
|
38
|
47
|
53
|
53
|
33
|
29
|
41
|
|
|
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
|
|
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