Air Quality
Excellent
No health implications.
32
PM2.5
39
PM10
20
O3
1.0
CO
10
SO2
19
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
27 Jul
89
Good
Mon
28 Jul
77
Good
Tue
29 Jul
95
Good
Wed
30 Jul
91
Good
Thu
31 Jul
71
Good
Fri
1 Aug
53
Good
Sat
2 Aug
23
Excellent
Air quality in the last 12 months (Chengzhong)
|
2025/06
|
28
|
15
|
23
|
46
|
57
|
36
|
27
|
27
|
21
|
19
|
23
|
25
|
23
|
20
|
25
|
18
|
17
|
15
|
24
|
22
|
20
|
25
|
30
|
27
|
24
|
36
|
16
|
25
|
21
|
18
|
|
|
2025/05
|
44
|
53
|
43
|
28
|
35
|
31
|
34
|
40
|
24
|
39
|
34
|
52
|
51
|
43
|
28
|
21
|
20
|
17
|
15
|
29
|
28
|
27
|
22
|
31
|
49
|
50
|
51
|
39
|
15
|
35
|
32
|
|
2025/04
|
40
|
60
|
74
|
73
|
89
|
96
|
107
|
88
|
101
|
99
|
53
|
59
|
129
|
161
|
114
|
108
|
100
|
79
|
55
|
43
|
45
|
42
|
30
|
31
|
24
|
35
|
41
|
34
|
50
|
49
|
|
|
2025/03
|
50
|
52
|
57
|
29
|
18
|
17
|
26
|
40
|
34
|
41
|
57
|
58
|
38
|
33
|
11
|
32
|
50
|
32
|
39
|
71
|
79
|
85
|
89
|
89
|
85
|
57
|
54
|
75
|
23
|
17
|
21
|
|
2025/02
|
27
|
10
|
17
|
50
|
67
|
29
|
19
|
58
|
39
|
66
|
140
|
148
|
55
|
74
|
33
|
29
|
30
|
25
|
26
|
18
|
17
|
19
|
12
|
40
|
63
|
35
|
43
|
56
|
|||
|
2025/01
|
141
|
104
|
85
|
101
|
92
|
105
|
80
|
74
|
56
|
46
|
50
|
100
|
105
|
104
|
74
|
67
|
72
|
111
|
111
|
128
|
113
|
102
|
137
|
91
|
56
|
17
|
44
|
58
|
118
|
119
|
90
|
|
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
|
|
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