Air Quality
Excellent
No health implications.
5
PM2.5
18
PM10
24
O3
0.5
CO
7
SO2
22
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
22 May
41
Excellent
Fri
23 May
67
Good
Sat
24 May
69
Good
Sun
25 May
81
Good
Mon
26 May
85
Good
Tue
27 May
82
Good
Wed
28 May
34
Excellent
Air quality in the last 12 months (Changyang)
|
2025/04
|
55
|
61
|
63
|
52
|
61
|
68
|
64
|
58
|
56
|
42
|
40
|
238
|
163
|
142
|
82
|
76
|
72
|
68
|
58
|
60
|
52
|
66
|
74
|
66
|
65
|
68
|
51
|
52
|
47
|
31
|
|
|
2025/03
|
119
|
95
|
20
|
34
|
43
|
39
|
67
|
83
|
63
|
54
|
81
|
65
|
55
|
48
|
31
|
42
|
50
|
42
|
41
|
43
|
49
|
57
|
48
|
55
|
46
|
54
|
111
|
52
|
67
|
61
|
61
|
|
2025/02
|
46
|
45
|
56
|
50
|
52
|
56
|
87
|
70
|
62
|
66
|
93
|
102
|
86
|
78
|
63
|
58
|
69
|
52
|
70
|
96
|
95
|
76
|
59
|
83
|
98
|
88
|
72
|
67
|
|||
|
2025/01
|
145
|
133
|
154
|
203
|
62
|
84
|
79
|
89
|
88
|
85
|
110
|
85
|
127
|
134
|
72
|
80
|
98
|
122
|
115
|
112
|
153
|
191
|
219
|
145
|
27
|
35
|
51
|
74
|
177
|
123
|
111
|
|
2024/12
|
68
|
87
|
91
|
68
|
31
|
49
|
48
|
60
|
80
|
62
|
50
|
74
|
81
|
52
|
69
|
74
|
94
|
100
|
73
|
93
|
95
|
60
|
60
|
82
|
122
|
107
|
133
|
102
|
110
|
160
|
140
|
|
2024/11
|
59
|
66
|
72
|
67
|
64
|
71
|
67
|
82
|
84
|
64
|
72
|
89
|
66
|
58
|
61
|
43
|
13
|
16
|
23
|
33
|
29
|
39
|
58
|
68
|
35
|
38
|
45
|
41
|
49
|
56
|
|
|
2024/10
|
23
|
41
|
47
|
42
|
54
|
46
|
26
|
42
|
51
|
56
|
69
|
61
|
53
|
56
|
62
|
54
|
41
|
21
|
25
|
36
|
27
|
40
|
37
|
44
|
47
|
43
|
48
|
53
|
80
|
87
|
57
|
|
2024/09
|
36
|
41
|
36
|
54
|
50
|
33
|
36
|
39
|
39
|
36
|
33
|
23
|
26
|
47
|
31
|
30
|
24
|
22
|
22
|
24
|
26
|
30
|
38
|
46
|
57
|
60
|
74
|
90
|
83
|
38
|
|
|
2024/08
|
20
|
27
|
20
|
18
|
21
|
16
|
20
|
22
|
32
|
34
|
70
|
52
|
34
|
33
|
36
|
33
|
22
|
25
|
16
|
32
|
31
|
26
|
31
|
30
|
32
|
32
|
18
|
18
|
25
|
33
|
42
|
|
2024/07
|
27
|
25
|
33
|
16
|
22
|
19
|
17
|
19
|
21
|
19
|
29
|
28
|
16
|
18
|
25
|
25
|
21
|
19
|
15
|
17
|
16
|
17
|
22
|
28
|
27
|
20
|
16
|
15
|
12
|
18
|
14
|
|
2024/06
|
42
|
40
|
40
|
26
|
20
|
41
|
45
|
42
|
35
|
39
|
42
|
25
|
28
|
37
|
43
|
43
|
28
|
29
|
30
|
40
|
39
|
15
|
26
|
30
|
36
|
37
|
37
|
17
|
26
|
34
|
|
|
2024/05
|
23
|
36
|
31
|
26
|
40
|
38
|
56
|
58
|
61
|
79
|
61
|
64
|
64
|
62
|
66
|
60
|
57
|
62
|
54
|
24
|
39
|
43
|
50
|
56
|
53
|
31
|
37
|
41
|
33
|
22
|
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