Air Quality
Excellent
No health implications.
6
PM2.5
14
PM10
57
O3
0.3
CO
4
SO2
16
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
7 May
56
Good
Fri
8 May
61
Good
Sat
9 May
87
Good
Sun
10 May
87
Good
Mon
11 May
94
Good
Tue
12 May
41
Excellent
Wed
13 May
34
Excellent
Air quality in the last 12 months (Changtu)
|
2026/04
|
81
|
82
|
70
|
38
|
44
|
39
|
31
|
132
|
56
|
67
|
47
|
66
|
44
|
57
|
51
|
71
|
50
|
56
|
78
|
125
|
79
|
38
|
36
|
65
|
63
|
35
|
27
|
31
|
38
|
39
|
|
|
2026/03
|
132
|
171
|
200
|
84
|
49
|
39
|
64
|
91
|
61
|
69
|
77
|
71
|
85
|
103
|
269
|
153
|
194
|
51
|
54
|
108
|
118
|
154
|
139
|
88
|
104
|
146
|
73
|
87
|
64
|
38
|
58
|
|
2026/02
|
75
|
66
|
62
|
123
|
165
|
38
|
53
|
56
|
61
|
82
|
71
|
111
|
143
|
86
|
46
|
50
|
110
|
37
|
50
|
68
|
74
|
223
|
57
|
53
|
95
|
70
|
78
|
59
|
|||
|
2026/01
|
69
|
86
|
97
|
140
|
82
|
70
|
49
|
55
|
82
|
51
|
40
|
45
|
35
|
48
|
58
|
80
|
59
|
54
|
44
|
57
|
62
|
51
|
58
|
53
|
86
|
92
|
71
|
67
|
105
|
78
|
71
|
|
2025/12
|
66
|
29
|
31
|
47
|
55
|
75
|
89
|
43
|
84
|
113
|
56
|
73
|
91
|
123
|
78
|
79
|
89
|
63
|
66
|
38
|
48
|
45
|
45
|
81
|
52
|
60
|
91
|
105
|
42
|
45
|
41
|
|
2025/11
|
54
|
24
|
35
|
53
|
100
|
72
|
89
|
186
|
51
|
37
|
69
|
88
|
53
|
85
|
108
|
62
|
38
|
52
|
65
|
44
|
67
|
90
|
139
|
224
|
102
|
83
|
47
|
46
|
58
|
43
|
|
|
2025/10
|
51
|
58
|
51
|
44
|
28
|
32
|
43
|
32
|
39
|
52
|
73
|
49
|
56
|
108
|
61
|
57
|
77
|
33
|
39
|
42
|
53
|
51
|
54
|
64
|
93
|
43
|
46
|
89
|
102
|
39
|
35
|
|
2025/09
|
34
|
40
|
38
|
34
|
34
|
25
|
29
|
25
|
28
|
26
|
37
|
43
|
38
|
38
|
21
|
26
|
22
|
24
|
25
|
33
|
33
|
24
|
33
|
22
|
42
|
33
|
34
|
33
|
48
|
46
|
|
|
2025/08
|
32
|
34
|
19
|
17
|
21
|
18
|
20
|
22
|
20
|
27
|
20
|
32
|
26
|
34
|
36
|
25
|
16
|
28
|
42
|
26
|
20
|
16
|
43
|
14
|
12
|
22
|
21
|
12
|
20
|
46
|
28
|
|
2025/07
|
23
|
26
|
17
|
17
|
23
|
18
|
21
|
32
|
44
|
43
|
42
|
42
|
20
|
20
|
18
|
22
|
20
|
25
|
29
|
19
|
24
|
32
|
19
|
22
|
28
|
35
|
31
|
19
|
24
|
16
|
19
|
|
2025/06
|
28
|
44
|
24
|
16
|
33
|
29
|
19
|
36
|
32
|
17
|
23
|
28
|
30
|
34
|
36
|
21
|
34
|
36
|
33
|
20
|
19
|
26
|
34
|
44
|
43
|
49
|
45
|
25
|
39
|
17
|
|
|
2025/05
|
21
|
31
|
29
|
28
|
35
|
26
|
50
|
47
|
41
|
35
|
42
|
59
|
54
|
52
|
50
|
34
|
27
|
32
|
36
|
39
|
43
|
49
|
33
|
39
|
28
|
42
|
48
|
52
|
50
|
58
|
57
|
|
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