Air Quality
Excellent
No health implications.
10
PM2.5
15
PM10
56
O3
0.4
CO
2
SO2
8
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
19 Apr
55
Good
Mon
20 Apr
139
Light
Tue
21 Apr
83
Good
Wed
22 Apr
61
Good
Thu
23 Apr
59
Good
Fri
24 Apr
57
Good
Sat
25 Apr
22
Excellent
Air quality in the last 12 months (Chengzihe)
|
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
|
|
|
2025/08
|
33
|
24
|
24
|
15
|
23
|
20
|
20
|
19
|
18
|
17
|
23
|
31
|
29
|
21
|
29
|
20
|
21
|
26
|
24
|
22
|
30
|
13
|
22
|
28
|
23
|
13
|
24
|
30
|
15
|
32
|
43
|
|
2025/07
|
31
|
19
|
23
|
30
|
40
|
17
|
26
|
33
|
33
|
33
|
34
|
37
|
24
|
19
|
18
|
11
|
22
|
20
|
23
|
21
|
19
|
19
|
29
|
33
|
26
|
14
|
25
|
21
|
21
|
17
|
21
|
|
2025/06
|
48
|
30
|
17
|
15
|
22
|
21
|
23
|
28
|
31
|
19
|
18
|
22
|
30
|
30
|
25
|
19
|
20
|
25
|
30
|
21
|
14
|
15
|
29
|
42
|
47
|
55
|
42
|
53
|
33
|
30
|
|
|
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
|
|
|
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