Air Quality
Good
Some pollutants may slightly affect very few hypersensitive individuals.
48
PM2.5
94
*
PM10
89
O3
0.4
CO
12
SO2
18
NO2
Some pollutants may slightly affect very few hypersensitive individuals.
Advise
Only very few hypersensitive people should reduce outdoor activities.
Air Quality
Today
20 Apr
93
Good
Sun
21 Apr
93
Good
Mon
22 Apr
99
Good
Tue
23 Apr
98
Good
Wed
24 Apr
87
Good
Thu
25 Apr
87
Good
Fri
26 Apr
84
Good
Air quality in the last 12 months (Chengzihe)
|
2024/02
|
31
|
53
|
57
|
58
|
71
|
84
|
64
|
62
|
106
|
244
|
114
|
71
|
67
|
51
|
33
|
41
|
70
|
99
|
46
|
24
|
28
|
24
|
31
|
68
|
96
|
57
|
45
|
59
|
55
|
||
|
2024/01
|
120
|
135
|
175
|
167
|
111
|
85
|
67
|
58
|
71
|
61
|
125
|
84
|
75
|
67
|
23
|
31
|
66
|
55
|
68
|
69
|
36
|
37
|
26
|
54
|
34
|
86
|
145
|
157
|
127
|
85
|
56
|
|
2023/12
|
41
|
55
|
87
|
98
|
102
|
104
|
27
|
58
|
45
|
29
|
41
|
72
|
57
|
80
|
43
|
25
|
24
|
56
|
100
|
43
|
38
|
39
|
58
|
104
|
93
|
76
|
61
|
104
|
115
|
111
|
42
|
|
2023/11
|
73
|
60
|
36
|
35
|
34
|
42
|
48
|
58
|
71
|
45
|
47
|
43
|
35
|
71
|
104
|
116
|
47
|
30
|
50
|
55
|
66
|
74
|
20
|
28
|
45
|
61
|
83
|
69
|
46
|
26
|
|
|
2023/10
|
19
|
37
|
41
|
25
|
21
|
22
|
47
|
59
|
57
|
54
|
48
|
46
|
52
|
74
|
65
|
48
|
47
|
76
|
24
|
22
|
26
|
41
|
65
|
86
|
74
|
55
|
46
|
55
|
67
|
102
|
134
|
|
2023/09
|
33
|
29
|
40
|
48
|
38
|
33
|
46
|
55
|
48
|
42
|
28
|
20
|
36
|
44
|
44
|
35
|
42
|
36
|
18
|
26
|
36
|
34
|
34
|
50
|
54
|
50
|
46
|
28
|
30
|
39
|
|
|
2023/08
|
43
|
27
|
13
|
9
|
13
|
15
|
17
|
9
|
15
|
16
|
13
|
18
|
21
|
15
|
21
|
25
|
38
|
42
|
29
|
47
|
35
|
23
|
39
|
34
|
38
|
22
|
30
|
40
|
17
|
17
|
25
|
|
2023/07
|
31
|
32
|
41
|
23
|
22
|
20
|
25
|
30
|
35
|
27
|
22
|
32
|
50
|
31
|
15
|
13
|
22
|
29
|
29
|
32
|
38
|
38
|
17
|
25
|
37
|
41
|
46
|
33
|
25
|
22
|
28
|
|
2023/06
|
34
|
25
|
18
|
21
|
25
|
30
|
32
|
26
|
21
|
21
|
23
|
35
|
39
|
41
|
48
|
52
|
33
|
34
|
37
|
36
|
19
|
21
|
33
|
39
|
40
|
52
|
25
|
21
|
33
|
31
|
|
|
2023/05
|
31
|
52
|
66
|
71
|
62
|
59
|
67
|
68
|
49
|
42
|
55
|
64
|
55
|
53
|
54
|
48
|
32
|
42
|
54
|
39
|
221
|
37
|
67
|
56
|
52
|
45
|
37
|
36
|
30
|
34
|
43
|
|
2023/04
|
75
|
127
|
123
|
80
|
126
|
82
|
110
|
93
|
130
|
171
|
224
|
310
|
65
|
98
|
142
|
36
|
46
|
41
|
37
|
162
|
82
|
36
|
46
|
51
|
77
|
34
|
55
|
63
|
39
|
23
|
|
|
2023/03
|
36
|
38
|
47
|
49
|
64
|
89
|
101
|
35
|
42
|
63
|
55
|
53
|
36
|
59
|
49
|
41
|
33
|
49
|
54
|
74
|
102
|
166
|
269
|
61
|
71
|
73
|
77
|
84
|
77
|
71
|
96
|
|
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