Air Quality
Good
Some pollutants may slightly affect very few hypersensitive individuals.
20
PM2.5
53
*
PM10
128
O3
0.6
CO
5
SO2
6
NO2
Some pollutants may slightly affect very few hypersensitive individuals.
Advise
Only very few hypersensitive people should reduce outdoor activities.
Air Quality
Today
17 May
50
Excellent
Sun
18 May
56
Good
Mon
19 May
50
Excellent
Tue
20 May
50
Excellent
Wed
21 May
58
Good
Thu
22 May
54
Good
Fri
23 May
47
Excellent
Air quality in the last 12 months (Chengzihe)
|
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
|
|
|
2024/05
|
52
|
73
|
56
|
64
|
74
|
68
|
49
|
52
|
42
|
43
|
26
|
23
|
35
|
34
|
19
|
35
|
40
|
57
|
30
|
29
|
35
|
50
|
34
|
19
|
38
|
28
|
18
|
24
|
19
|
17
|
11
|
|
2024/04
|
36
|
39
|
64
|
27
|
45
|
75
|
38
|
21
|
47
|
60
|
91
|
83
|
59
|
86
|
187
|
48
|
45
|
70
|
53
|
104
|
134
|
79
|
55
|
44
|
62
|
62
|
64
|
74
|
68
|
42
|
|
|
2024/03
|
45
|
37
|
45
|
41
|
41
|
47
|
53
|
45
|
29
|
62
|
85
|
58
|
68
|
67
|
44
|
22
|
20
|
34
|
41
|
42
|
48
|
47
|
23
|
28
|
42
|
56
|
50
|
63
|
82
|
47
|
50
|
|
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