Air Quality
Excellent
No health implications.
17
PM2.5
26
PM10
50
O3
0.7
CO
5
SO2
9
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
16 Feb
99
Good
Tue
17 Feb
146
Light
Wed
18 Feb
107
Light
Thu
19 Feb
79
Good
Fri
20 Feb
69
Good
Sat
21 Feb
69
Good
Sun
22 Feb
35
Excellent
Air quality in the last 12 months (Guidong)
|
2026/01
|
39
|
32
|
43
|
58
|
44
|
54
|
51
|
49
|
52
|
57
|
64
|
69
|
76
|
66
|
77
|
82
|
94
|
96
|
76
|
24
|
34
|
45
|
60
|
53
|
75
|
70
|
71
|
55
|
53
|
56
|
26
|
|
2025/12
|
60
|
78
|
81
|
65
|
66
|
71
|
72
|
75
|
80
|
87
|
74
|
87
|
24
|
37
|
46
|
50
|
56
|
74
|
65
|
54
|
103
|
77
|
65
|
36
|
43
|
51
|
53
|
55
|
60
|
72
|
96
|
|
2025/11
|
44
|
44
|
28
|
21
|
26
|
28
|
43
|
26
|
14
|
14
|
38
|
48
|
38
|
46
|
48
|
50
|
65
|
31
|
31
|
34
|
40
|
51
|
58
|
57
|
52
|
62
|
61
|
69
|
64
|
57
|
|
|
2025/10
|
48
|
33
|
26
|
39
|
27
|
18
|
30
|
37
|
40
|
44
|
46
|
52
|
70
|
45
|
55
|
51
|
55
|
44
|
21
|
12
|
17
|
24
|
36
|
44
|
48
|
72
|
72
|
66
|
70
|
77
|
55
|
|
2025/09
|
24
|
25
|
27
|
27
|
26
|
27
|
38
|
18
|
11
|
15
|
15
|
20
|
24
|
32
|
33
|
23
|
25
|
34
|
31
|
16
|
19
|
22
|
29
|
17
|
18
|
21
|
28
|
40
|
39
|
46
|
|
|
2025/08
|
29
|
22
|
15
|
19
|
14
|
11
|
14
|
17
|
25
|
33
|
30
|
28
|
26
|
22
|
12
|
21
|
22
|
18
|
14
|
17
|
20
|
20
|
22
|
19
|
17
|
19
|
23
|
22
|
23
|
22
|
23
|
|
2025/07
|
15
|
15
|
24
|
28
|
31
|
30
|
34
|
32
|
30
|
19
|
17
|
17
|
26
|
24
|
23
|
24
|
29
|
28
|
27
|
17
|
14
|
15
|
17
|
21
|
26
|
29
|
22
|
21
|
23
|
22
|
23
|
|
2025/06
|
15
|
15
|
22
|
28
|
29
|
24
|
23
|
22
|
23
|
27
|
24
|
21
|
26
|
11
|
11
|
19
|
8
|
11
|
11
|
12
|
15
|
15
|
21
|
24
|
31
|
19
|
15
|
15
|
16
|
15
|
|
|
2025/05
|
46
|
50
|
46
|
37
|
20
|
29
|
52
|
27
|
23
|
43
|
36
|
37
|
36
|
32
|
29
|
21
|
16
|
12
|
14
|
14
|
17
|
19
|
20
|
39
|
49
|
44
|
43
|
21
|
13
|
23
|
16
|
|
2025/04
|
42
|
43
|
47
|
59
|
61
|
62
|
58
|
56
|
56
|
36
|
41
|
137
|
179
|
120
|
77
|
67
|
71
|
58
|
22
|
18
|
28
|
25
|
35
|
27
|
22
|
22
|
21
|
29
|
49
|
48
|
|
|
2025/03
|
29
|
25
|
25
|
16
|
17
|
22
|
40
|
37
|
37
|
39
|
40
|
42
|
34
|
20
|
15
|
33
|
48
|
34
|
38
|
41
|
43
|
46
|
56
|
61
|
64
|
59
|
52
|
66
|
35
|
14
|
32
|
|
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
|
|||
|
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