Air Quality
Excellent
No health implications.
4
PM2.5
7
PM10
26
O3
0.3
CO
3
SO2
10
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
27 Sep
54
Good
Mon
28 Sep
56
Good
Tue
29 Sep
51
Good
Wed
30 Sep
59
Good
Thu
1 Oct
50
Excellent
Fri
2 Oct
16
Excellent
Sat
3 Oct
22
Excellent
Air quality in the last 12 months (Chengzihe)
|
2026/08
|
10
|
9
|
15
|
29
|
33
|
29
|
20
|
25
|
24
|
27
|
20
|
22
|
20
|
20
|
21
|
13
|
17
|
17
|
24
|
29
|
32
|
30
|
26
|
20
|
22
|
26
|
24
|
19
|
19
|
17
|
20
|
|
2026/07
|
45
|
28
|
24
|
21
|
21
|
21
|
18
|
14
|
20
|
23
|
26
|
17
|
21
|
24
|
24
|
23
|
29
|
41
|
38
|
36
|
28
|
30
|
31
|
23
|
17
|
16
|
17
|
19
|
28
|
25
|
18
|
|
2026/06
|
39
|
43
|
25
|
20
|
23
|
19
|
16
|
16
|
22
|
25
|
28
|
32
|
29
|
25
|
23
|
23
|
27
|
34
|
34
|
21
|
25
|
23
|
28
|
39
|
39
|
33
|
34
|
23
|
27
|
39
|
|
|
2026/05
|
34
|
41
|
36
|
41
|
63
|
28
|
28
|
28
|
31
|
33
|
38
|
43
|
50
|
42
|
45
|
33
|
27
|
26
|
26
|
34
|
44
|
42
|
39
|
41
|
49
|
32
|
26
|
22
|
26
|
26
|
37
|
|
2026/04
|
94
|
186
|
150
|
57
|
54
|
44
|
25
|
33
|
77
|
46
|
29
|
39
|
29
|
37
|
45
|
55
|
69
|
33
|
40
|
61
|
50
|
26
|
28
|
42
|
28
|
31
|
34
|
33
|
42
|
50
|
|
|
2026/03
|
49
|
49
|
61
|
77
|
61
|
52
|
37
|
36
|
37
|
44
|
68
|
67
|
70
|
72
|
70
|
112
|
117
|
149
|
48
|
52
|
120
|
114
|
87
|
115
|
122
|
99
|
191
|
173
|
167
|
54
|
59
|
|
2026/02
|
38
|
42
|
55
|
73
|
49
|
35
|
25
|
26
|
59
|
105
|
57
|
37
|
87
|
62
|
54
|
51
|
74
|
22
|
45
|
63
|
85
|
76
|
104
|
66
|
80
|
65
|
49
|
39
|
|||
|
2026/01
|
27
|
27
|
37
|
41
|
26
|
41
|
51
|
26
|
84
|
72
|
36
|
65
|
65
|
38
|
74
|
32
|
35
|
72
|
52
|
29
|
33
|
28
|
36
|
26
|
26
|
32
|
29
|
48
|
22
|
29
|
31
|
|
2025/12
|
31
|
37
|
28
|
24
|
37
|
73
|
39
|
46
|
44
|
43
|
36
|
33
|
64
|
86
|
75
|
37
|
27
|
74
|
92
|
47
|
31
|
64
|
69
|
50
|
52
|
25
|
36
|
85
|
60
|
31
|
32
|
|
2025/11
|
99
|
104
|
58
|
80
|
140
|
102
|
25
|
57
|
41
|
25
|
39
|
68
|
58
|
53
|
71
|
73
|
40
|
44
|
71
|
40
|
108
|
114
|
70
|
136
|
50
|
70
|
75
|
68
|
72
|
55
|
|
|
2025/10
|
29
|
34
|
53
|
48
|
23
|
39
|
53
|
32
|
37
|
41
|
52
|
38
|
50
|
69
|
49
|
94
|
61
|
20
|
21
|
24
|
25
|
47
|
56
|
66
|
95
|
121
|
75
|
45
|
148
|
57
|
83
|
|
2025/09
|
33
|
33
|
43
|
45
|
43
|
30
|
25
|
34
|
30
|
38
|
24
|
49
|
52
|
35
|
17
|
18
|
15
|
30
|
34
|
37
|
31
|
36
|
42
|
31
|
20
|
14
|
28
|
38
|
40
|
53
|
|
|
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