Air Quality
Excellent
No health implications.
8
PM2.5
18
PM10
104
O3
0.1
CO
12
SO2
11
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
18 Mar
55
Good
Thu
19 Mar
59
Good
Fri
20 Mar
51
Good
Sat
21 Mar
51
Good
Sun
22 Mar
51
Good
Mon
23 Mar
57
Good
Tue
24 Mar
23
Excellent
Air quality in the last 12 months (Gucheng)
|
2026/02
|
24
|
19
|
18
|
16
|
19
|
24
|
27
|
25
|
20
|
23
|
24
|
22
|
24
|
22
|
28
|
36
|
41
|
36
|
50
|
42
|
28
|
49
|
29
|
30
|
26
|
25
|
25
|
30
|
|||
|
2026/01
|
33
|
22
|
19
|
17
|
18
|
25
|
24
|
27
|
26
|
25
|
27
|
23
|
29
|
30
|
31
|
26
|
35
|
31
|
28
|
18
|
21
|
30
|
32
|
27
|
22
|
26
|
23
|
23
|
25
|
25
|
24
|
|
2025/12
|
38
|
37
|
36
|
24
|
27
|
26
|
30
|
34
|
29
|
28
|
27
|
27
|
32
|
33
|
26
|
27
|
35
|
29
|
26
|
28
|
36
|
29
|
32
|
22
|
27
|
27
|
25
|
20
|
23
|
22
|
25
|
|
2025/11
|
14
|
16
|
8
|
12
|
22
|
14
|
14
|
20
|
20
|
15
|
19
|
24
|
27
|
26
|
26
|
32
|
28
|
32
|
28
|
22
|
23
|
21
|
20
|
22
|
25
|
34
|
30
|
32
|
30
|
28
|
|
|
2025/10
|
9
|
13
|
13
|
14
|
14
|
13
|
14
|
10
|
12
|
13
|
13
|
11
|
13
|
15
|
17
|
24
|
17
|
13
|
15
|
10
|
15
|
20
|
23
|
22
|
16
|
14
|
16
|
17
|
14
|
17
|
18
|
|
2025/09
|
20
|
14
|
15
|
12
|
16
|
13
|
20
|
17
|
20
|
22
|
18
|
17
|
13
|
20
|
26
|
18
|
14
|
17
|
16
|
16
|
15
|
14
|
12
|
16
|
23
|
20
|
11
|
16
|
12
|
10
|
|
|
2025/08
|
19
|
15
|
15
|
16
|
16
|
22
|
17
|
21
|
14
|
18
|
16
|
11
|
16
|
26
|
25
|
17
|
13
|
17
|
22
|
18
|
14
|
14
|
13
|
10
|
11
|
20
|
22
|
20
|
10
|
13
|
16
|
|
2025/07
|
19
|
17
|
14
|
13
|
10
|
11
|
11
|
12
|
15
|
16
|
22
|
18
|
19
|
27
|
20
|
23
|
22
|
27
|
15
|
20
|
17
|
18
|
16
|
13
|
14
|
11
|
9
|
14
|
22
|
22
|
13
|
|
2025/06
|
11
|
19
|
12
|
24
|
23
|
15
|
17
|
21
|
20
|
17
|
24
|
23
|
34
|
23
|
18
|
18
|
12
|
11
|
12
|
14
|
15
|
10
|
15
|
16
|
12
|
14
|
16
|
19
|
16
|
17
|
|
|
2025/05
|
21
|
20
|
21
|
13
|
15
|
16
|
17
|
18
|
26
|
29
|
21
|
29
|
22
|
21
|
22
|
24
|
27
|
26
|
24
|
17
|
14
|
21
|
24
|
12
|
13
|
23
|
15
|
15
|
12
|
15
|
14
|
|
2025/04
|
61
|
55
|
52
|
41
|
41
|
39
|
43
|
41
|
36
|
38
|
28
|
30
|
22
|
31
|
34
|
18
|
25
|
25
|
21
|
20
|
18
|
18
|
24
|
26
|
41
|
34
|
39
|
43
|
31
|
34
|
|
|
2025/03
|
28
|
19
|
19
|
28
|
31
|
41
|
47
|
55
|
39
|
40
|
37
|
40
|
47
|
29
|
16
|
31
|
18
|
25
|
18
|
32
|
46
|
26
|
21
|
22
|
23
|
20
|
21
|
36
|
80
|
69
|
61
|
|
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