Air Quality
Excellent
No health implications.
20
PM2.5
43
PM10
69
O3
0.3
CO
10
SO2
9
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
12 May
86
Good
Tue
13 May
80
Good
Wed
14 May
70
Good
Thu
15 May
48
Excellent
Fri
16 May
56
Good
Sat
17 May
55
Good
Sun
18 May
41
Excellent
Air quality in the last 12 months (Guidong)
|
2025/02
|
24
|
13
|
23
|
38
|
45
|
48
|
39
|
62
|
35
|
41
|
48
|
50
|
64
|
75
|
65
|
36
|
40
|
35
|
32
|
16
|
25
|
17
|
18
|
40
|
63
|
70
|
49
|
37
|
|||
|
2025/01
|
94
|
79
|
99
|
105
|
125
|
101
|
77
|
78
|
58
|
45
|
44
|
53
|
53
|
51
|
74
|
60
|
55
|
55
|
61
|
60
|
65
|
63
|
67
|
120
|
60
|
19
|
39
|
53
|
101
|
67
|
54
|
|
2024/12
|
50
|
55
|
55
|
88
|
70
|
41
|
39
|
56
|
81
|
75
|
44
|
48
|
77
|
67
|
50
|
49
|
53
|
57
|
75
|
76
|
79
|
87
|
82
|
84
|
93
|
98
|
107
|
102
|
70
|
79
|
87
|
|
2024/11
|
46
|
58
|
54
|
56
|
61
|
53
|
43
|
44
|
48
|
60
|
47
|
49
|
53
|
53
|
34
|
40
|
33
|
16
|
21
|
33
|
41
|
42
|
43
|
49
|
51
|
27
|
36
|
37
|
39
|
49
|
|
|
2024/10
|
38
|
36
|
40
|
38
|
37
|
49
|
63
|
51
|
43
|
41
|
49
|
54
|
64
|
87
|
66
|
29
|
36
|
40
|
25
|
24
|
32
|
30
|
33
|
36
|
45
|
53
|
28
|
25
|
50
|
49
|
40
|
|
2024/09
|
33
|
36
|
36
|
31
|
33
|
24
|
18
|
19
|
17
|
26
|
34
|
40
|
35
|
41
|
26
|
29
|
38
|
41
|
40
|
28
|
28
|
33
|
36
|
35
|
29
|
31
|
38
|
38
|
36
|
36
|
|
|
2024/08
|
15
|
19
|
28
|
34
|
31
|
29
|
24
|
31
|
30
|
33
|
30
|
22
|
17
|
21
|
23
|
25
|
20
|
22
|
18
|
26
|
25
|
19
|
23
|
27
|
28
|
25
|
32
|
29
|
28
|
35
|
39
|
|
2024/07
|
16
|
16
|
18
|
14
|
14
|
16
|
15
|
16
|
20
|
21
|
19
|
19
|
17
|
18
|
19
|
15
|
12
|
13
|
16
|
15
|
17
|
21
|
22
|
30
|
33
|
24
|
15
|
11
|
13
|
15
|
13
|
|
2024/06
|
14
|
14
|
28
|
16
|
14
|
24
|
27
|
33
|
31
|
22
|
18
|
17
|
19
|
17
|
13
|
13
|
13
|
21
|
19
|
20
|
20
|
25
|
21
|
17
|
16
|
21
|
22
|
18
|
15
|
17
|
|
|
2024/05
|
16
|
24
|
30
|
27
|
19
|
26
|
44
|
48
|
50
|
52
|
32
|
36
|
65
|
53
|
49
|
53
|
51
|
46
|
28
|
20
|
21
|
23
|
21
|
22
|
20
|
21
|
16
|
28
|
30
|
33
|
18
|
|
2024/04
|
36
|
50
|
35
|
20
|
17
|
20
|
23
|
29
|
36
|
36
|
42
|
49
|
46
|
49
|
51
|
48
|
27
|
33
|
22
|
22
|
19
|
26
|
32
|
40
|
27
|
25
|
33
|
29
|
29
|
20
|
|
|
2024/03
|
48
|
43
|
37
|
30
|
32
|
66
|
56
|
53
|
46
|
48
|
34
|
40
|
52
|
37
|
32
|
36
|
46
|
23
|
36
|
59
|
64
|
44
|
38
|
34
|
33
|
26
|
41
|
27
|
34
|
38
|
31
|
|
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