Air Quality
Excellent
No health implications.
14
PM2.5
23
PM10
52
O3
0.9
CO
5
SO2
13
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
17 Apr
49
Excellent
Sat
18 Apr
60
Good
Sun
19 Apr
51
Good
Mon
20 Apr
41
Excellent
Tue
21 Apr
29
Excellent
Wed
22 Apr
34
Excellent
Thu
23 Apr
17
Excellent
Air quality in the last 12 months (Chengzhong)
|
2026/03
|
45
|
14
|
16
|
30
|
56
|
39
|
55
|
53
|
13
|
23
|
40
|
56
|
55
|
81
|
72
|
63
|
66
|
43
|
32
|
27
|
29
|
72
|
96
|
61
|
48
|
92
|
49
|
32
|
58
|
44
|
36
|
|
2026/02
|
34
|
51
|
75
|
170
|
158
|
62
|
41
|
25
|
47
|
28
|
21
|
31
|
40
|
55
|
72
|
61
|
23
|
36
|
40
|
53
|
122
|
205
|
107
|
46
|
36
|
71
|
25
|
30
|
|||
|
2026/01
|
24
|
22
|
33
|
57
|
19
|
39
|
55
|
79
|
97
|
111
|
67
|
109
|
135
|
116
|
144
|
119
|
174
|
98
|
77
|
21
|
16
|
26
|
35
|
54
|
125
|
71
|
23
|
41
|
88
|
49
|
16
|
|
2025/12
|
97
|
83
|
73
|
77
|
62
|
68
|
91
|
61
|
76
|
104
|
144
|
97
|
23
|
44
|
56
|
72
|
68
|
61
|
81
|
79
|
67
|
66
|
77
|
12
|
38
|
56
|
60
|
75
|
89
|
80
|
68
|
|
2025/11
|
32
|
34
|
13
|
10
|
26
|
42
|
38
|
24
|
12
|
13
|
14
|
28
|
39
|
42
|
50
|
55
|
55
|
22
|
22
|
27
|
26
|
45
|
64
|
46
|
43
|
52
|
51
|
66
|
74
|
95
|
|
|
2025/10
|
39
|
31
|
29
|
34
|
29
|
15
|
25
|
37
|
42
|
44
|
45
|
46
|
32
|
25
|
26
|
41
|
46
|
35
|
15
|
13
|
15
|
13
|
26
|
41
|
43
|
41
|
35
|
36
|
40
|
53
|
30
|
|
2025/09
|
31
|
26
|
22
|
26
|
31
|
31
|
34
|
34
|
15
|
23
|
17
|
20
|
25
|
34
|
22
|
27
|
21
|
31
|
37
|
33
|
17
|
15
|
25
|
17
|
11
|
20
|
28
|
31
|
34
|
43
|
|
|
2025/08
|
23
|
26
|
26
|
28
|
21
|
17
|
18
|
28
|
29
|
31
|
34
|
34
|
33
|
38
|
13
|
22
|
26
|
14
|
16
|
18
|
20
|
25
|
30
|
32
|
27
|
25
|
30
|
28
|
33
|
22
|
23
|
|
2025/07
|
17
|
20
|
20
|
40
|
45
|
41
|
44
|
25
|
29
|
28
|
24
|
27
|
34
|
29
|
23
|
28
|
29
|
45
|
41
|
36
|
18
|
16
|
13
|
22
|
36
|
43
|
55
|
37
|
35
|
29
|
29
|
|
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
|
|
|
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