Air Quality
Excellent
No health implications.
4
PM2.5
9
PM10
25
O3
0.1
CO
10
SO2
13
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
28 Aug
48
Excellent
Sat
29 Aug
52
Good
Sun
30 Aug
59
Good
Mon
31 Aug
69
Good
Tue
1 Sep
65
Good
Wed
2 Sep
68
Good
Thu
3 Sep
50
Excellent
Air quality in the last 12 months (Chengguan)
|
2026/07
|
46
|
46
|
39
|
39
|
34
|
32
|
29
|
30
|
25
|
24
|
25
|
27
|
22
|
21
|
21
|
20
|
24
|
30
|
34
|
40
|
40
|
37
|
26
|
27
|
24
|
32
|
35
|
27
|
28
|
22
|
24
|
|
2026/06
|
38
|
39
|
40
|
45
|
43
|
42
|
36
|
37
|
37
|
38
|
40
|
41
|
36
|
33
|
34
|
35
|
35
|
42
|
40
|
39
|
32
|
33
|
38
|
39
|
37
|
35
|
37
|
41
|
43
|
40
|
|
|
2026/05
|
38
|
34
|
36
|
40
|
34
|
40
|
42
|
40
|
37
|
32
|
38
|
35
|
34
|
35
|
42
|
37
|
43
|
37
|
30
|
32
|
33
|
33
|
31
|
34
|
39
|
38
|
39
|
46
|
40
|
36
|
41
|
|
2026/04
|
33
|
33
|
29
|
26
|
27
|
38
|
37
|
39
|
41
|
56
|
48
|
43
|
43
|
37
|
39
|
44
|
32
|
34
|
32
|
31
|
35
|
39
|
34
|
31
|
31
|
38
|
32
|
32
|
35
|
31
|
|
|
2026/03
|
41
|
36
|
32
|
30
|
28
|
31
|
26
|
28
|
27
|
27
|
29
|
27
|
27
|
29
|
32
|
36
|
38
|
36
|
29
|
29
|
31
|
34
|
35
|
33
|
41
|
38
|
33
|
31
|
32
|
26
|
27
|
|
2026/02
|
29
|
30
|
22
|
19
|
14
|
19
|
19
|
19
|
20
|
32
|
26
|
15
|
15
|
24
|
16
|
29
|
26
|
36
|
19
|
20
|
17
|
17
|
14
|
13
|
17
|
16
|
34
|
44
|
|||
|
2026/01
|
25
|
26
|
24
|
19
|
25
|
40
|
47
|
29
|
37
|
51
|
41
|
20
|
27
|
39
|
30
|
22
|
30
|
37
|
36
|
28
|
33
|
26
|
29
|
27
|
21
|
26
|
21
|
36
|
15
|
23
|
23
|
|
2025/12
|
34
|
39
|
44
|
36
|
35
|
34
|
36
|
44
|
35
|
33
|
32
|
36
|
31
|
39
|
37
|
30
|
35
|
31
|
45
|
40
|
38
|
47
|
48
|
43
|
32
|
34
|
36
|
33
|
29
|
26
|
30
|
|
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
|
|
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