Air Quality
Excellent
No health implications.
5
PM2.5
16
PM10
105
O3
0.4
CO
6
SO2
7
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
4 Jul
87
Good
Sat
5 Jul
51
Good
Sun
6 Jul
61
Good
Mon
7 Jul
64
Good
Tue
8 Jul
62
Good
Wed
9 Jul
62
Good
Thu
10 Jul
36
Excellent
Air quality in the last 12 months (Chengzihe)
|
2025/05
|
38
|
38
|
30
|
27
|
21
|
38
|
45
|
38
|
37
|
22
|
46
|
54
|
47
|
40
|
25
|
46
|
36
|
19
|
22
|
30
|
30
|
19
|
21
|
25
|
21
|
27
|
33
|
44
|
47
|
47
|
54
|
|
2025/04
|
101
|
80
|
66
|
63
|
60
|
20
|
38
|
70
|
67
|
73
|
161
|
104
|
47
|
31
|
28
|
35
|
61
|
55
|
39
|
70
|
103
|
32
|
41
|
39
|
41
|
19
|
38
|
56
|
39
|
42
|
|
|
2025/03
|
31
|
23
|
41
|
55
|
58
|
45
|
43
|
67
|
77
|
82
|
85
|
89
|
23
|
24
|
27
|
30
|
43
|
42
|
45
|
77
|
96
|
17
|
53
|
70
|
112
|
91
|
26
|
18
|
34
|
27
|
57
|
|
2025/02
|
67
|
103
|
91
|
41
|
31
|
32
|
49
|
34
|
32
|
44
|
64
|
75
|
37
|
33
|
48
|
49
|
26
|
21
|
22
|
29
|
30
|
27
|
25
|
33
|
69
|
36
|
63
|
74
|
|||
|
2025/01
|
86
|
65
|
46
|
56
|
95
|
99
|
87
|
69
|
43
|
41
|
65
|
103
|
98
|
76
|
49
|
68
|
67
|
110
|
137
|
132
|
138
|
179
|
139
|
99
|
101
|
102
|
83
|
77
|
78
|
50
|
48
|
|
2024/12
|
35
|
29
|
36
|
25
|
19
|
28
|
23
|
30
|
46
|
58
|
28
|
34
|
32
|
37
|
34
|
37
|
32
|
28
|
34
|
80
|
64
|
56
|
49
|
39
|
79
|
40
|
25
|
39
|
64
|
93
|
94
|
|
2024/11
|
65
|
51
|
57
|
46
|
48
|
21
|
51
|
98
|
103
|
90
|
77
|
139
|
184
|
135
|
98
|
91
|
28
|
33
|
63
|
71
|
91
|
36
|
43
|
72
|
68
|
24
|
37
|
52
|
34
|
24
|
|
|
2024/10
|
12
|
26
|
49
|
51
|
55
|
42
|
33
|
57
|
54
|
43
|
36
|
49
|
49
|
54
|
25
|
39
|
52
|
55
|
37
|
39
|
56
|
35
|
33
|
51
|
62
|
51
|
27
|
50
|
62
|
63
|
73
|
|
2024/09
|
20
|
12
|
26
|
38
|
12
|
21
|
30
|
36
|
34
|
19
|
24
|
33
|
28
|
22
|
28
|
38
|
24
|
30
|
30
|
21
|
30
|
33
|
40
|
43
|
36
|
21
|
36
|
43
|
45
|
33
|
|
|
2024/08
|
21
|
15
|
19
|
14
|
18
|
19
|
28
|
33
|
35
|
34
|
10
|
18
|
23
|
25
|
21
|
30
|
26
|
28
|
11
|
20
|
17
|
21
|
21
|
29
|
27
|
28
|
26
|
30
|
32
|
31
|
12
|
|
2024/07
|
72
|
71
|
51
|
32
|
35
|
52
|
51
|
64
|
59
|
47
|
65
|
33
|
29
|
37
|
49
|
47
|
31
|
16
|
26
|
38
|
38
|
30
|
32
|
20
|
23
|
13
|
18
|
21
|
18
|
21
|
24
|
|
2024/06
|
10
|
29
|
37
|
25
|
31
|
30
|
36
|
34
|
21
|
22
|
44
|
23
|
20
|
19
|
18
|
19
|
24
|
25
|
39
|
33
|
12
|
8
|
7
|
8
|
16
|
31
|
30
|
53
|
54
|
52
|
|
|
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