Air Quality
Excellent
No health implications.
9
PM2.5
21
PM10
73
O3
0.3
CO
6
SO2
11
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
12 Jan
47
Excellent
Tue
13 Jan
50
Excellent
Wed
14 Jan
45
Excellent
Thu
15 Jan
53
Good
Fri
16 Jan
57
Good
Sat
17 Jan
50
Excellent
Sun
18 Jan
26
Excellent
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