Air Quality
Severe
Healthy people will experience reduced endurance in activities and may also show noticeably strong symptoms. Other illnesses may be triggered in healthy people. Elders and the sick should remain indoors and avoid exercise. Healthy individuals should avoid outdoor activities.
PM2.5
PM10
O3
CO
SO2
NO2
Healthy people will experience reduced endurance in activities and may also show noticeably strong symptoms. Other illnesses may be triggered in healthy people. Elders and the sick should remain indoors and avoid exercise. Healthy individuals should avoid outdoor activities.
Advise
Children, seniors and the sick should stay indoors and avoid physical exertion. General population should avoid outdoor activities.
Air Quality
Today
23 Nov
Mon
24 Nov
Tue
25 Nov
Wed
26 Nov
Thu
27 Nov
Fri
28 Nov
Sat
29 Nov
Air quality in the last 12 months (Youhao zone)
|
2025/10
|
18
|
21
|
30
|
25
|
16
|
16
|
20
|
14
|
18
|
22
|
26
|
18
|
17
|
16
|
15
|
21
|
15
|
16
|
17
|
17
|
18
|
19
|
24
|
32
|
100
|
115
|
69
|
24
|
56
|
88
|
44
|
|
2025/09
|
19
|
16
|
20
|
37
|
29
|
19
|
15
|
14
|
13
|
17
|
19
|
16
|
16
|
19
|
12
|
12
|
11
|
12
|
16
|
16
|
14
|
19
|
24
|
19
|
11
|
12
|
18
|
17
|
21
|
24
|
|
|
2025/08
|
16
|
14
|
11
|
15
|
13
|
12
|
10
|
13
|
11
|
11
|
10
|
13
|
13
|
14
|
20
|
12
|
14
|
25
|
13
|
12
|
17
|
11
|
13
|
19
|
19
|
14
|
16
|
31
|
17
|
16
|
19
|
|
2025/07
|
20
|
16
|
14
|
18
|
18
|
14
|
16
|
16
|
16
|
20
|
22
|
13
|
13
|
16
|
18
|
12
|
11
|
15
|
15
|
15
|
15
|
17
|
27
|
25
|
19
|
18
|
17
|
17
|
19
|
12
|
13
|
|
2025/06
|
17
|
28
|
42
|
12
|
17
|
12
|
11
|
19
|
19
|
16
|
12
|
20
|
28
|
19
|
17
|
24
|
13
|
18
|
21
|
15
|
10
|
13
|
30
|
28
|
30
|
27
|
31
|
31
|
21
|
19
|
|
|
2025/05
|
39
|
30
|
15
|
12
|
13
|
15
|
21
|
31
|
29
|
34
|
44
|
82
|
59
|
35
|
44
|
19
|
16
|
15
|
24
|
19
|
13
|
16
|
20
|
16
|
17
|
17
|
19
|
33
|
35
|
34
|
42
|
|
2025/04
|
58
|
44
|
48
|
38
|
45
|
50
|
48
|
38
|
40
|
46
|
35
|
87
|
35
|
17
|
13
|
15
|
41
|
59
|
21
|
15
|
39
|
22
|
37
|
27
|
19
|
13
|
25
|
19
|
28
|
22
|
|
|
2025/03
|
21
|
21
|
23
|
29
|
31
|
29
|
29
|
30
|
31
|
77
|
26
|
40
|
20
|
17
|
18
|
21
|
21
|
24
|
32
|
63
|
27
|
13
|
15
|
19
|
21
|
15
|
17
|
12
|
14
|
15
|
34
|
|
2025/02
|
59
|
66
|
45
|
29
|
22
|
21
|
35
|
18
|
37
|
52
|
56
|
42
|
75
|
58
|
51
|
27
|
21
|
19
|
28
|
22
|
25
|
22
|
36
|
44
|
63
|
28
|
43
|
42
|
|||
|
2025/01
|
105
|
125
|
95
|
114
|
71
|
66
|
93
|
35
|
46
|
69
|
85
|
98
|
94
|
66
|
55
|
38
|
50
|
61
|
68
|
61
|
65
|
59
|
77
|
91
|
83
|
59
|
31
|
44
|
19
|
31
|
51
|
|
2024/12
|
50
|
34
|
35
|
27
|
23
|
25
|
38
|
48
|
73
|
74
|
68
|
63
|
60
|
73
|
62
|
37
|
50
|
43
|
66
|
83
|
52
|
65
|
53
|
68
|
62
|
41
|
48
|
69
|
86
|
72
|
69
|
|
2024/11
|
35
|
22
|
25
|
15
|
15
|
17
|
24
|
40
|
54
|
48
|
47
|
31
|
45
|
99
|
61
|
42
|
15
|
16
|
55
|
65
|
56
|
25
|
26
|
42
|
35
|
28
|
25
|
35
|
30
|
17
|
|
|
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
*: primary pollution