Air Quality
Excellent
No health implications.
8
PM2.5
13
PM10
100
O3
0.6
CO
7
SO2
6
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
21 May
56
Good
Thu
22 May
64
Good
Fri
23 May
62
Good
Sat
24 May
57
Good
Sun
25 May
64
Good
Mon
26 May
19
Excellent
Tue
27 May
45
Excellent
Air quality in the last 12 months (Gucheng)
|
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
|
|
2025/02
|
24
|
27
|
45
|
43
|
28
|
27
|
30
|
25
|
22
|
22
|
23
|
25
|
29
|
29
|
21
|
30
|
24
|
32
|
16
|
19
|
21
|
22
|
31
|
28
|
28
|
18
|
16
|
23
|
|||
|
2025/01
|
29
|
33
|
45
|
41
|
41
|
30
|
22
|
27
|
29
|
25
|
31
|
29
|
21
|
23
|
40
|
57
|
34
|
18
|
21
|
33
|
57
|
36
|
22
|
16
|
17
|
23
|
28
|
50
|
56
|
22
|
19
|
|
2024/12
|
19
|
16
|
18
|
21
|
20
|
23
|
22
|
22
|
18
|
22
|
25
|
33
|
24
|
20
|
18
|
22
|
22
|
35
|
24
|
20
|
26
|
20
|
26
|
31
|
25
|
34
|
32
|
45
|
22
|
24
|
24
|
|
2024/11
|
30
|
35
|
27
|
28
|
18
|
24
|
14
|
11
|
16
|
23
|
20
|
18
|
21
|
23
|
26
|
32
|
36
|
25
|
20
|
21
|
16
|
22
|
17
|
16
|
20
|
22
|
21
|
24
|
21
|
19
|
|
|
2024/10
|
15
|
13
|
19
|
22
|
17
|
17
|
17
|
17
|
16
|
18
|
15
|
13
|
15
|
21
|
20
|
14
|
15
|
20
|
26
|
20
|
27
|
26
|
20
|
14
|
15
|
22
|
21
|
41
|
33
|
20
|
20
|
|
2024/09
|
16
|
18
|
21
|
17
|
14
|
20
|
25
|
24
|
20
|
14
|
16
|
16
|
23
|
28
|
22
|
22
|
19
|
18
|
23
|
24
|
27
|
24
|
25
|
30
|
28
|
20
|
20
|
12
|
14
|
19
|
|
|
2024/08
|
16
|
26
|
19
|
12
|
15
|
24
|
22
|
17
|
14
|
13
|
15
|
23
|
16
|
30
|
35
|
22
|
24
|
16
|
15
|
20
|
24
|
27
|
31
|
31
|
26
|
24
|
25
|
23
|
29
|
30
|
16
|
|
2024/07
|
14
|
21
|
17
|
16
|
15
|
17
|
16
|
15
|
13
|
14
|
20
|
13
|
22
|
20
|
20
|
18
|
17
|
20
|
19
|
20
|
16
|
21
|
13
|
16
|
14
|
19
|
24
|
24
|
20
|
14
|
15
|
|
2024/06
|
33
|
24
|
21
|
19
|
26
|
29
|
21
|
23
|
30
|
21
|
27
|
17
|
16
|
14
|
14
|
19
|
16
|
16
|
20
|
21
|
18
|
22
|
19
|
14
|
13
|
23
|
22
|
15
|
15
|
10
|
|
|
2024/05
|
37
|
28
|
33
|
40
|
45
|
32
|
31
|
28
|
29
|
23
|
27
|
24
|
30
|
26
|
25
|
29
|
25
|
32
|
34
|
18
|
28
|
25
|
17
|
28
|
24
|
19
|
16
|
20
|
18
|
28
|
40
|
|
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