Air Quality
Excellent
No health implications.
7
PM2.5
14
PM10
67
O3
0.6
CO
5
SO2
9
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
30 Jun
48
Excellent
Tue
1 Jul
66
Good
Wed
2 Jul
73
Good
Thu
3 Jul
59
Good
Fri
4 Jul
68
Good
Sat
5 Jul
75
Good
Sun
6 Jul
44
Excellent
Air quality in the last 12 months (Chenggu)
|
2025/05
|
68
|
57
|
83
|
59
|
52
|
108
|
61
|
50
|
90
|
51
|
54
|
56
|
39
|
53
|
62
|
61
|
84
|
69
|
73
|
74
|
82
|
64
|
60
|
47
|
46
|
46
|
31
|
32
|
30
|
36
|
24
|
|
2025/04
|
60
|
77
|
72
|
68
|
89
|
64
|
57
|
62
|
71
|
68
|
86
|
498
|
259
|
85
|
59
|
70
|
77
|
97
|
105
|
57
|
55
|
81
|
82
|
57
|
57
|
50
|
39
|
45
|
52
|
51
|
|
|
2025/03
|
112
|
66
|
24
|
19
|
28
|
39
|
47
|
57
|
63
|
51
|
79
|
111
|
56
|
33
|
54
|
49
|
51
|
46
|
44
|
50
|
53
|
52
|
59
|
53
|
49
|
86
|
247
|
74
|
65
|
63
|
46
|
|
2025/02
|
99
|
56
|
38
|
63
|
82
|
53
|
59
|
67
|
72
|
81
|
88
|
68
|
68
|
61
|
54
|
60
|
63
|
62
|
70
|
98
|
124
|
97
|
57
|
70
|
68
|
51
|
57
|
78
|
|||
|
2025/01
|
127
|
113
|
111
|
158
|
171
|
199
|
195
|
110
|
86
|
83
|
74
|
78
|
93
|
95
|
68
|
68
|
109
|
120
|
103
|
107
|
126
|
190
|
249
|
137
|
38
|
65
|
75
|
110
|
219
|
228
|
163
|
|
2024/12
|
88
|
108
|
117
|
68
|
73
|
71
|
80
|
77
|
70
|
79
|
73
|
75
|
38
|
58
|
80
|
94
|
102
|
95
|
85
|
126
|
135
|
100
|
74
|
106
|
109
|
119
|
82
|
67
|
123
|
131
|
112
|
|
2024/11
|
45
|
33
|
42
|
48
|
44
|
55
|
70
|
78
|
71
|
61
|
64
|
65
|
48
|
32
|
37
|
33
|
13
|
11
|
22
|
29
|
34
|
50
|
61
|
53
|
23
|
46
|
56
|
53
|
59
|
73
|
|
|
2024/10
|
27
|
29
|
38
|
47
|
53
|
52
|
50
|
60
|
39
|
35
|
43
|
42
|
48
|
40
|
38
|
49
|
53
|
40
|
34
|
12
|
15
|
27
|
40
|
52
|
52
|
35
|
24
|
33
|
49
|
60
|
51
|
|
2024/09
|
34
|
41
|
34
|
28
|
17
|
37
|
26
|
33
|
30
|
22
|
42
|
33
|
31
|
23
|
32
|
21
|
25
|
35
|
34
|
26
|
18
|
27
|
36
|
51
|
53
|
55
|
65
|
67
|
41
|
14
|
|
|
2024/08
|
33
|
35
|
26
|
18
|
20
|
24
|
27
|
26
|
28
|
54
|
60
|
45
|
40
|
34
|
28
|
31
|
30
|
18
|
27
|
28
|
29
|
39
|
41
|
42
|
33
|
29
|
26
|
26
|
32
|
36
|
35
|
|
2024/07
|
22
|
25
|
28
|
27
|
17
|
21
|
22
|
15
|
14
|
18
|
18
|
25
|
36
|
21
|
20
|
26
|
17
|
19
|
18
|
22
|
25
|
32
|
34
|
56
|
65
|
55
|
50
|
43
|
32
|
26
|
26
|
|
2024/06
|
60
|
38
|
42
|
26
|
24
|
31
|
27
|
28
|
32
|
40
|
36
|
34
|
35
|
35
|
36
|
25
|
25
|
24
|
29
|
22
|
11
|
27
|
34
|
37
|
29
|
30
|
26
|
32
|
38
|
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