Air Quality
Excellent
No health implications.
3
PM2.5
9
PM10
40
O3
0.5
CO
4
SO2
9
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
23 Feb
57
Good
Mon
24 Feb
67
Good
Tue
25 Feb
66
Good
Wed
26 Feb
59
Good
Thu
27 Feb
64
Good
Fri
28 Feb
47
Excellent
Sat
1 Mar
48
Excellent
Air quality in the last 12 months (Guidong)
|
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
|
|
2024/02
|
46
|
23
|
18
|
17
|
32
|
19
|
19
|
52
|
69
|
99
|
66
|
64
|
46
|
40
|
41
|
26
|
30
|
27
|
30
|
49
|
24
|
14
|
17
|
26
|
30
|
27
|
35
|
29
|
24
|
||
|
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