Air Quality
Excellent
No health implications.
4
PM2.5
15
PM10
54
O3
0.5
CO
6
SO2
13
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
30 Jun
91
Good
Tue
1 Jul
66
Good
Wed
2 Jul
62
Good
Thu
3 Jul
56
Good
Fri
4 Jul
65
Good
Sat
5 Jul
36
Excellent
Sun
6 Jul
16
Excellent
Air quality in the last 12 months (Chengdong)
|
2025/05
|
40
|
78
|
195
|
79
|
67
|
125
|
126
|
55
|
44
|
33
|
50
|
49
|
55
|
30
|
38
|
43
|
68
|
38
|
46
|
46
|
45
|
51
|
47
|
30
|
28
|
42
|
40
|
43
|
75
|
61
|
71
|
|
2025/04
|
118
|
112
|
104
|
145
|
103
|
70
|
105
|
71
|
73
|
52
|
71
|
31
|
42
|
49
|
62
|
108
|
76
|
93
|
104
|
110
|
78
|
79
|
42
|
50
|
55
|
41
|
29
|
44
|
44
|
39
|
|
|
2025/03
|
78
|
56
|
66
|
67
|
55
|
71
|
74
|
56
|
56
|
59
|
210
|
145
|
99
|
47
|
57
|
49
|
49
|
44
|
54
|
61
|
62
|
68
|
57
|
54
|
45
|
363
|
106
|
59
|
74
|
121
|
91
|
|
2025/02
|
63
|
54
|
42
|
50
|
39
|
52
|
46
|
60
|
63
|
54
|
74
|
70
|
71
|
61
|
49
|
54
|
55
|
54
|
72
|
64
|
73
|
70
|
59
|
56
|
52
|
47
|
60
|
53
|
|||
|
2025/01
|
81
|
60
|
71
|
62
|
53
|
70
|
70
|
84
|
93
|
51
|
57
|
45
|
46
|
64
|
67
|
60
|
73
|
58
|
58
|
57
|
77
|
70
|
88
|
88
|
79
|
56
|
59
|
72
|
142
|
58
|
46
|
|
2024/12
|
58
|
55
|
80
|
61
|
71
|
86
|
65
|
70
|
82
|
64
|
92
|
59
|
58
|
101
|
104
|
61
|
74
|
79
|
87
|
106
|
111
|
136
|
131
|
120
|
117
|
104
|
51
|
79
|
83
|
92
|
64
|
|
2024/11
|
53
|
47
|
58
|
53
|
55
|
68
|
57
|
51
|
74
|
67
|
64
|
58
|
56
|
75
|
91
|
50
|
55
|
54
|
75
|
76
|
78
|
75
|
86
|
43
|
33
|
70
|
49
|
47
|
81
|
95
|
|
|
2024/10
|
24
|
36
|
46
|
45
|
43
|
44
|
50
|
51
|
38
|
37
|
45
|
35
|
40
|
49
|
51
|
26
|
34
|
43
|
45
|
46
|
56
|
35
|
51
|
56
|
55
|
38
|
39
|
45
|
64
|
63
|
43
|
|
2024/09
|
40
|
38
|
35
|
14
|
14
|
18
|
21
|
44
|
17
|
21
|
24
|
26
|
14
|
25
|
38
|
20
|
25
|
33
|
40
|
17
|
23
|
35
|
29
|
42
|
44
|
35
|
59
|
54
|
22
|
18
|
|
|
2024/08
|
39
|
21
|
24
|
26
|
36
|
31
|
30
|
33
|
35
|
20
|
32
|
37
|
43
|
17
|
21
|
25
|
27
|
26
|
33
|
38
|
44
|
49
|
40
|
33
|
25
|
28
|
44
|
46
|
25
|
44
|
35
|
|
2024/07
|
17
|
26
|
24
|
33
|
39
|
50
|
52
|
37
|
45
|
49
|
43
|
44
|
41
|
26
|
44
|
39
|
33
|
34
|
26
|
40
|
174
|
48
|
42
|
61
|
49
|
55
|
47
|
25
|
21
|
32
|
27
|
|
2024/06
|
49
|
39
|
33
|
31
|
37
|
25
|
38
|
29
|
35
|
36
|
34
|
37
|
29
|
32
|
37
|
21
|
32
|
21
|
47
|
31
|
26
|
30
|
31
|
36
|
42
|
36
|
46
|
28
|
31
|
25
|
|
|
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