Air Quality
Excellent
No health implications.
26
PM2.5
43
PM10
25
O3
0.6
CO
9
SO2
51
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
29 Jul
104
Light
Wed
30 Jul
95
Good
Thu
31 Jul
71
Good
Fri
1 Aug
74
Good
Sat
2 Aug
96
Good
Sun
3 Aug
42
Excellent
Mon
4 Aug
46
Excellent
Air quality in the last 12 months (Chengguan)
|
2025/06
|
43
|
46
|
42
|
37
|
42
|
41
|
53
|
55
|
40
|
46
|
48
|
52
|
68
|
43
|
66
|
47
|
54
|
57
|
40
|
46
|
47
|
29
|
37
|
37
|
35
|
45
|
34
|
41
|
52
|
38
|
|
|
2025/05
|
58
|
135
|
112
|
122
|
112
|
155
|
109
|
43
|
48
|
49
|
48
|
58
|
81
|
41
|
49
|
55
|
192
|
56
|
60
|
57
|
65
|
57
|
45
|
40
|
38
|
53
|
50
|
36
|
41
|
107
|
75
|
|
2025/04
|
115
|
114
|
93
|
119
|
80
|
67
|
70
|
87
|
128
|
72
|
127
|
380
|
108
|
75
|
67
|
182
|
93
|
255
|
157
|
138
|
92
|
78
|
62
|
57
|
54
|
48
|
66
|
49
|
57
|
94
|
|
|
2025/03
|
90
|
58
|
68
|
84
|
61
|
65
|
72
|
82
|
82
|
72
|
215
|
101
|
103
|
63
|
47
|
59
|
50
|
43
|
55
|
64
|
62
|
66
|
63
|
76
|
110
|
403
|
75
|
81
|
63
|
90
|
78
|
|
2025/02
|
72
|
63
|
54
|
57
|
44
|
51
|
56
|
64
|
72
|
67
|
91
|
106
|
105
|
71
|
62
|
81
|
85
|
72
|
75
|
71
|
74
|
79
|
60
|
70
|
76
|
74
|
76
|
77
|
|||
|
2025/01
|
86
|
74
|
88
|
82
|
118
|
135
|
65
|
69
|
71
|
67
|
68
|
85
|
93
|
68
|
70
|
92
|
83
|
68
|
98
|
104
|
90
|
98
|
120
|
92
|
74
|
90
|
87
|
148
|
241
|
140
|
88
|
|
2024/12
|
89
|
73
|
74
|
57
|
65
|
65
|
48
|
58
|
63
|
69
|
75
|
61
|
63
|
87
|
119
|
125
|
105
|
71
|
79
|
84
|
80
|
119
|
115
|
92
|
112
|
83
|
56
|
89
|
92
|
89
|
106
|
|
2024/11
|
63
|
60
|
65
|
70
|
73
|
74
|
71
|
70
|
61
|
74
|
62
|
61
|
64
|
83
|
77
|
56
|
53
|
48
|
58
|
77
|
83
|
99
|
83
|
48
|
50
|
72
|
84
|
75
|
88
|
95
|
|
|
2024/10
|
40
|
50
|
41
|
44
|
49
|
55
|
57
|
58
|
55
|
59
|
53
|
47
|
60
|
58
|
48
|
41
|
54
|
53
|
56
|
51
|
47
|
51
|
67
|
53
|
48
|
52
|
70
|
75
|
63
|
44
|
52
|
|
2024/09
|
45
|
45
|
38
|
35
|
23
|
26
|
36
|
47
|
32
|
36
|
38
|
42
|
29
|
43
|
48
|
38
|
52
|
54
|
47
|
44
|
41
|
46
|
45
|
57
|
45
|
43
|
56
|
54
|
36
|
33
|
|
|
2024/08
|
44
|
29
|
37
|
39
|
41
|
35
|
33
|
35
|
74
|
40
|
40
|
45
|
38
|
35
|
42
|
34
|
36
|
41
|
43
|
41
|
44
|
47
|
40
|
41
|
34
|
53
|
35
|
35
|
36
|
34
|
57
|
|
2024/07
|
32
|
39
|
38
|
49
|
39
|
52
|
48
|
36
|
59
|
66
|
62
|
67
|
47
|
29
|
23
|
33
|
35
|
42
|
32
|
105
|
274
|
77
|
54
|
100
|
69
|
54
|
47
|
45
|
33
|
40
|
41
|
|
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