Air Quality
Excellent
No health implications.
12
PM2.5
21
PM10
67
O3
0.4
CO
6
SO2
12
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
16 Jan
55
Good
Sat
17 Jan
56
Good
Sun
18 Jan
50
Excellent
Mon
19 Jan
50
Excellent
Tue
20 Jan
53
Good
Wed
21 Jan
50
Excellent
Thu
22 Jan
31
Excellent
Chengguan Air quality rank
Air quality in the last 12 months (Chengguan)
|
2025/11
|
12
|
12
|
16
|
22
|
33
|
20
|
21
|
19
|
20
|
24
|
34
|
27
|
26
|
28
|
29
|
26
|
27
|
26
|
30
|
28
|
30
|
30
|
27
|
31
|
29
|
29
|
29
|
37
|
32
|
32
|
|
|
2025/10
|
15
|
12
|
10
|
10
|
10
|
12
|
14
|
14
|
10
|
10
|
11
|
12
|
17
|
16
|
20
|
19
|
15
|
13
|
15
|
15
|
20
|
24
|
15
|
11
|
15
|
17
|
17
|
23
|
15
|
17
|
9
|
|
2025/09
|
11
|
11
|
12
|
14
|
14
|
10
|
13
|
12
|
14
|
16
|
13
|
12
|
14
|
10
|
9
|
9
|
15
|
12
|
13
|
10
|
12
|
13
|
18
|
20
|
16
|
15
|
12
|
11
|
14
|
20
|
|
|
2025/08
|
13
|
13
|
11
|
13
|
13
|
15
|
16
|
11
|
14
|
11
|
11
|
15
|
21
|
17
|
16
|
15
|
14
|
12
|
11
|
13
|
12
|
9
|
12
|
12
|
11
|
13
|
12
|
9
|
12
|
12
|
14
|
|
2025/07
|
11
|
14
|
15
|
12
|
14
|
21
|
20
|
24
|
23
|
22
|
19
|
21
|
11
|
12
|
14
|
10
|
12
|
18
|
19
|
16
|
10
|
11
|
14
|
13
|
13
|
12
|
11
|
11
|
10
|
13
|
12
|
|
2025/06
|
13
|
13
|
16
|
16
|
12
|
12
|
11
|
18
|
23
|
23
|
26
|
27
|
21
|
13
|
12
|
12
|
14
|
16
|
13
|
10
|
21
|
21
|
18
|
12
|
23
|
24
|
23
|
18
|
12
|
14
|
|
|
2025/05
|
17
|
17
|
16
|
16
|
18
|
12
|
19
|
32
|
36
|
33
|
34
|
24
|
18
|
14
|
13
|
11
|
11
|
13
|
14
|
11
|
25
|
26
|
18
|
28
|
14
|
12
|
16
|
25
|
24
|
15
|
11
|
|
2025/04
|
28
|
33
|
26
|
29
|
29
|
23
|
31
|
34
|
26
|
26
|
15
|
16
|
17
|
20
|
14
|
26
|
19
|
27
|
29
|
17
|
19
|
29
|
28
|
24
|
29
|
37
|
27
|
22
|
20
|
24
|
|
|
2025/03
|
23
|
16
|
22
|
30
|
37
|
32
|
28
|
25
|
16
|
19
|
28
|
19
|
15
|
15
|
17
|
22
|
18
|
19
|
20
|
22
|
33
|
24
|
15
|
14
|
14
|
24
|
23
|
25
|
39
|
36
|
25
|
|
2025/02
|
34
|
37
|
31
|
23
|
38
|
28
|
29
|
32
|
22
|
28
|
21
|
29
|
32
|
46
|
29
|
18
|
21
|
20
|
16
|
15
|
19
|
17
|
18
|
16
|
13
|
21
|
24
|
38
|
|||
|
2025/01
|
32
|
33
|
42
|
35
|
23
|
35
|
22
|
23
|
24
|
29
|
28
|
24
|
25
|
23
|
28
|
32
|
28
|
30
|
25
|
27
|
33
|
33
|
35
|
46
|
30
|
17
|
18
|
22
|
31
|
36
|
54
|
|
2024/12
|
33
|
30
|
30
|
39
|
31
|
32
|
46
|
67
|
88
|
46
|
38
|
43
|
45
|
26
|
24
|
35
|
42
|
48
|
25
|
33
|
32
|
28
|
32
|
45
|
38
|
22
|
25
|
29
|
25
|
22
|
21
|
|
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