Air Quality
Excellent
No health implications.
13
PM2.5
36
PM10
92
O3
0.4
CO
20
SO2
14
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
9 May
67
Good
Sat
10 May
65
Good
Sun
11 May
63
Good
Mon
12 May
66
Good
Tue
13 May
61
Good
Wed
14 May
61
Good
Thu
15 May
26
Excellent
Air quality in the last 12 months (Chengguan)
|
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
|
|
2024/11
|
27
|
26
|
24
|
21
|
11
|
20
|
21
|
25
|
34
|
31
|
31
|
27
|
28
|
28
|
36
|
35
|
31
|
31
|
33
|
23
|
20
|
34
|
31
|
27
|
22
|
24
|
33
|
31
|
24
|
27
|
|
|
2024/10
|
18
|
15
|
15
|
13
|
13
|
14
|
19
|
20
|
22
|
20
|
20
|
16
|
14
|
16
|
14
|
16
|
21
|
17
|
12
|
13
|
13
|
19
|
22
|
17
|
24
|
20
|
22
|
25
|
29
|
37
|
27
|
|
2024/09
|
13
|
13
|
11
|
13
|
11
|
16
|
12
|
13
|
12
|
11
|
14
|
11
|
12
|
12
|
14
|
11
|
11
|
19
|
15
|
13
|
11
|
14
|
14
|
12
|
14
|
11
|
12
|
13
|
13
|
18
|
|
|
2024/08
|
19
|
17
|
11
|
11
|
9
|
11
|
11
|
13
|
12
|
18
|
21
|
16
|
12
|
14
|
18
|
16
|
17
|
15
|
14
|
13
|
12
|
13
|
10
|
11
|
13
|
12
|
13
|
21
|
13
|
13
|
16
|
|
2024/07
|
11
|
10
|
14
|
10
|
13
|
11
|
10
|
11
|
12
|
12
|
10
|
12
|
10
|
13
|
14
|
12
|
12
|
14
|
14
|
13
|
12
|
12
|
11
|
12
|
14
|
16
|
11
|
11
|
14
|
15
|
18
|
|
2024/06
|
15
|
17
|
17
|
13
|
13
|
19
|
18
|
17
|
16
|
19
|
17
|
18
|
12
|
15
|
20
|
13
|
13
|
15
|
15
|
17
|
13
|
15
|
12
|
10
|
11
|
14
|
10
|
10
|
11
|
11
|
|
|
2024/05
|
45
|
41
|
45
|
37
|
16
|
11
|
14
|
15
|
12
|
19
|
23
|
25
|
15
|
16
|
22
|
17
|
16
|
35
|
26
|
21
|
22
|
23
|
19
|
11
|
11
|
13
|
15
|
20
|
15
|
18
|
20
|
|
2024/04
|
24
|
21
|
33
|
17
|
22
|
20
|
18
|
26
|
35
|
29
|
22
|
26
|
24
|
20
|
25
|
22
|
14
|
21
|
19
|
22
|
23
|
25
|
38
|
36
|
21
|
22
|
19
|
28
|
29
|
32
|
|
|
2024/03
|
39
|
14
|
20
|
20
|
24
|
26
|
18
|
13
|
18
|
28
|
17
|
29
|
24
|
25
|
28
|
23
|
23
|
21
|
32
|
37
|
25
|
13
|
16
|
14
|
22
|
13
|
22
|
22
|
20
|
21
|
18
|
|
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