Air Quality
Excellent
No health implications.
28
PM2.5
38
PM10
84
O3
0.5
CO
5
SO2
11
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
25 May
60
Good
Mon
26 May
67
Good
Tue
27 May
52
Good
Wed
28 May
41
Excellent
Thu
29 May
45
Excellent
Fri
30 May
52
Good
Sat
31 May
30
Excellent
Air quality in the last 12 months (Chengbu)
|
2025/04
|
51
|
57
|
66
|
119
|
112
|
83
|
99
|
114
|
99
|
68
|
59
|
110
|
206
|
126
|
89
|
83
|
78
|
76
|
45
|
32
|
44
|
31
|
53
|
33
|
32
|
41
|
31
|
37
|
57
|
50
|
|
|
2025/03
|
50
|
42
|
34
|
18
|
22
|
34
|
48
|
50
|
53
|
39
|
43
|
54
|
50
|
26
|
16
|
43
|
39
|
39
|
50
|
50
|
62
|
71
|
81
|
83
|
92
|
84
|
84
|
75
|
36
|
21
|
41
|
|
2025/02
|
17
|
14
|
47
|
63
|
63
|
64
|
46
|
72
|
47
|
55
|
74
|
73
|
72
|
81
|
48
|
42
|
38
|
43
|
32
|
21
|
73
|
24
|
39
|
85
|
63
|
54
|
37
|
48
|
|||
|
2025/01
|
107
|
106
|
115
|
144
|
154
|
99
|
83
|
83
|
50
|
59
|
63
|
71
|
71
|
72
|
75
|
67
|
73
|
90
|
89
|
89
|
103
|
119
|
142
|
189
|
51
|
24
|
50
|
81
|
198
|
108
|
44
|
|
2024/12
|
61
|
72
|
88
|
114
|
48
|
28
|
38
|
55
|
91
|
29
|
29
|
61
|
65
|
55
|
49
|
52
|
69
|
67
|
84
|
96
|
95
|
89
|
87
|
95
|
97
|
96
|
83
|
115
|
112
|
112
|
90
|
|
2024/11
|
51
|
77
|
76
|
73
|
80
|
71
|
59
|
53
|
64
|
71
|
66
|
68
|
69
|
79
|
79
|
68
|
27
|
16
|
17
|
24
|
35
|
42
|
54
|
54
|
35
|
22
|
36
|
41
|
44
|
56
|
|
|
2024/10
|
27
|
46
|
58
|
54
|
54
|
62
|
59
|
49
|
47
|
53
|
64
|
69
|
89
|
68
|
41
|
34
|
44
|
34
|
17
|
20
|
26
|
19
|
30
|
39
|
44
|
50
|
42
|
52
|
62
|
56
|
54
|
|
2024/09
|
35
|
34
|
41
|
40
|
52
|
44
|
32
|
31
|
31
|
35
|
37
|
39
|
35
|
35
|
40
|
37
|
40
|
42
|
40
|
40
|
30
|
31
|
40
|
45
|
58
|
60
|
55
|
57
|
54
|
55
|
|
|
2024/08
|
14
|
20
|
22
|
27
|
29
|
28
|
31
|
27
|
27
|
27
|
23
|
32
|
32
|
40
|
44
|
39
|
40
|
40
|
39
|
32
|
31
|
20
|
20
|
20
|
28
|
31
|
35
|
30
|
36
|
38
|
43
|
|
2024/07
|
18
|
12
|
22
|
20
|
19
|
18
|
21
|
19
|
22
|
25
|
25
|
25
|
27
|
21
|
25
|
25
|
20
|
18
|
14
|
21
|
27
|
26
|
23
|
29
|
34
|
33
|
35
|
16
|
15
|
19
|
15
|
|
2024/06
|
25
|
20
|
43
|
19
|
15
|
23
|
33
|
34
|
35
|
27
|
19
|
20
|
16
|
21
|
26
|
29
|
13
|
10
|
18
|
24
|
22
|
28
|
26
|
18
|
10
|
18
|
19
|
21
|
15
|
13
|
|
|
2024/05
|
18
|
34
|
21
|
14
|
22
|
35
|
44
|
51
|
47
|
39
|
27
|
44
|
58
|
59
|
59
|
64
|
57
|
39
|
18
|
19
|
33
|
46
|
41
|
36
|
40
|
20
|
18
|
34
|
32
|
20
|
20
|
|
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