Air Quality
Excellent
No health implications.
8
PM2.5
14
PM10
36
O3
0.7
CO
6
SO2
13
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
16 Feb
95
Good
Tue
17 Feb
151
Moderate
Wed
18 Feb
81
Good
Thu
19 Feb
52
Good
Fri
20 Feb
68
Good
Sat
21 Feb
90
Good
Sun
22 Feb
43
Excellent
Air quality in the last 12 months (Chengzhong)
|
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
|
|
|
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
|
|||
|
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