Air Quality
Excellent
No health implications.
4
PM2.5
14
PM10
21
O3
0.8
CO
9
SO2
12
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
1 Feb
69
Good
Sun
2 Feb
49
Excellent
Mon
3 Feb
44
Excellent
Tue
4 Feb
64
Good
Wed
5 Feb
46
Excellent
Thu
6 Feb
44
Excellent
Fri
7 Feb
28
Excellent
Air quality in the last 12 months (Chengzhong)
|
2024/12
|
76
|
96
|
93
|
79
|
76
|
30
|
17
|
34
|
67
|
73
|
15
|
32
|
45
|
57
|
44
|
49
|
92
|
60
|
66
|
92
|
97
|
86
|
90
|
85
|
104
|
88
|
80
|
79
|
87
|
110
|
94
|
|
2024/11
|
43
|
51
|
65
|
86
|
63
|
65
|
51
|
56
|
63
|
62
|
71
|
66
|
70
|
64
|
59
|
48
|
39
|
23
|
19
|
17
|
23
|
29
|
33
|
44
|
52
|
23
|
29
|
41
|
50
|
66
|
|
|
2024/10
|
28
|
28
|
50
|
55
|
60
|
57
|
58
|
42
|
37
|
45
|
54
|
58
|
64
|
55
|
26
|
38
|
35
|
27
|
21
|
17
|
30
|
30
|
28
|
34
|
38
|
39
|
32
|
23
|
41
|
46
|
51
|
|
2024/09
|
30
|
42
|
32
|
29
|
46
|
38
|
15
|
18
|
23
|
24
|
27
|
37
|
43
|
38
|
37
|
29
|
27
|
34
|
39
|
34
|
28
|
18
|
28
|
35
|
42
|
29
|
46
|
52
|
37
|
48
|
|
|
2024/08
|
19
|
19
|
21
|
27
|
32
|
33
|
35
|
27
|
27
|
27
|
27
|
24
|
16
|
19
|
29
|
36
|
28
|
27
|
30
|
30
|
20
|
17
|
27
|
26
|
31
|
34
|
39
|
43
|
36
|
33
|
38
|
|
2024/07
|
23
|
11
|
22
|
22
|
22
|
23
|
22
|
23
|
24
|
24
|
26
|
28
|
27
|
22
|
22
|
25
|
23
|
19
|
23
|
27
|
33
|
33
|
22
|
18
|
37
|
52
|
43
|
17
|
17
|
12
|
13
|
|
2024/06
|
26
|
31
|
28
|
20
|
15
|
21
|
29
|
26
|
15
|
22
|
20
|
22
|
28
|
20
|
30
|
28
|
25
|
23
|
27
|
26
|
24
|
21
|
20
|
16
|
12
|
12
|
17
|
17
|
19
|
19
|
|
|
2024/05
|
14
|
23
|
36
|
32
|
22
|
47
|
58
|
53
|
34
|
35
|
39
|
23
|
55
|
58
|
62
|
56
|
60
|
36
|
14
|
22
|
26
|
33
|
48
|
45
|
39
|
19
|
26
|
29
|
41
|
22
|
15
|
|
2024/04
|
55
|
50
|
52
|
20
|
16
|
14
|
14
|
25
|
36
|
44
|
39
|
52
|
50
|
49
|
56
|
48
|
41
|
23
|
43
|
30
|
16
|
45
|
30
|
46
|
52
|
33
|
30
|
52
|
61
|
30
|
|
|
2024/03
|
50
|
66
|
74
|
43
|
45
|
34
|
51
|
55
|
77
|
38
|
38
|
55
|
54
|
32
|
22
|
43
|
55
|
37
|
30
|
84
|
95
|
66
|
47
|
51
|
47
|
22
|
56
|
35
|
49
|
59
|
47
|
|
2024/02
|
39
|
28
|
24
|
15
|
18
|
17
|
16
|
29
|
40
|
101
|
130
|
118
|
125
|
91
|
70
|
29
|
68
|
48
|
45
|
56
|
63
|
16
|
15
|
16
|
16
|
15
|
23
|
17
|
17
|
||
|
2024/01
|
117
|
46
|
27
|
47
|
110
|
59
|
62
|
30
|
29
|
42
|
51
|
45
|
61
|
72
|
75
|
69
|
88
|
85
|
69
|
12
|
21
|
16
|
46
|
41
|
45
|
50
|
47
|
44
|
30
|
23
|
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