Air Quality
Excellent
No health implications.
26
PM2.5
40
PM10
38
O3
0.6
CO
4
SO2
16
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
20 Jan
48
Excellent
Wed
21 Jan
64
Good
Thu
22 Jan
75
Good
Fri
23 Jan
96
Good
Sat
24 Jan
101
Light
Sun
25 Jan
23
Excellent
Mon
26 Jan
30
Excellent
Air quality in the last 12 months (Chenggu)
|
2025/11
|
53
|
51
|
53
|
66
|
58
|
48
|
22
|
40
|
45
|
56
|
60
|
64
|
61
|
66
|
61
|
52
|
19
|
30
|
41
|
61
|
64
|
76
|
56
|
60
|
65
|
77
|
103
|
88
|
84
|
89
|
|
|
2025/10
|
11
|
12
|
13
|
11
|
11
|
11
|
14
|
21
|
26
|
17
|
9
|
10
|
16
|
21
|
15
|
14
|
9
|
14
|
12
|
9
|
12
|
19
|
32
|
41
|
42
|
39
|
44
|
50
|
59
|
47
|
49
|
|
2025/09
|
27
|
22
|
30
|
17
|
15
|
30
|
33
|
21
|
23
|
26
|
16
|
14
|
20
|
26
|
33
|
24
|
17
|
7
|
10
|
12
|
13
|
11
|
9
|
15
|
26
|
27
|
19
|
13
|
15
|
18
|
|
|
2025/08
|
29
|
30
|
36
|
35
|
30
|
21
|
24
|
21
|
16
|
12
|
19
|
24
|
29
|
36
|
30
|
14
|
17
|
19
|
25
|
25
|
29
|
26
|
16
|
18
|
18
|
30
|
27
|
11
|
11
|
14
|
19
|
|
2025/07
|
16
|
17
|
25
|
22
|
13
|
16
|
18
|
18
|
26
|
23
|
25
|
34
|
34
|
33
|
32
|
35
|
30
|
18
|
25
|
21
|
23
|
27
|
15
|
13
|
13
|
20
|
22
|
24
|
25
|
25
|
27
|
|
2025/06
|
18
|
29
|
45
|
46
|
33
|
39
|
28
|
29
|
30
|
38
|
38
|
37
|
45
|
35
|
59
|
52
|
43
|
28
|
28
|
40
|
25
|
26
|
23
|
26
|
20
|
19
|
26
|
26
|
27
|
13
|
|
|
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
|
|
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