Air Quality
Excellent
No health implications.
2
PM2.5
6
PM10
29
O3
0.4
CO
3
SO2
19
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
13 Nov
41
Excellent
Fri
14 Nov
44
Excellent
Sat
15 Nov
49
Excellent
Sun
16 Nov
48
Excellent
Mon
17 Nov
51
Good
Tue
18 Nov
32
Excellent
Wed
19 Nov
48
Excellent
Ouhai Air quality rank
Air quality in the last 12 months (Ouhai)
|
2025/10
|
21
|
20
|
15
|
14
|
22
|
33
|
30
|
29
|
26
|
28
|
28
|
29
|
26
|
27
|
18
|
29
|
26
|
32
|
10
|
14
|
18
|
22
|
31
|
35
|
41
|
43
|
30
|
32
|
26
|
31
|
16
|
|
2025/09
|
22
|
20
|
17
|
24
|
26
|
19
|
14
|
25
|
21
|
19
|
20
|
27
|
39
|
27
|
34
|
17
|
18
|
15
|
13
|
19
|
21
|
23
|
17
|
17
|
16
|
20
|
19
|
23
|
23
|
24
|
|
|
2025/08
|
35
|
34
|
33
|
24
|
20
|
26
|
34
|
47
|
44
|
44
|
40
|
27
|
18
|
17
|
14
|
14
|
17
|
17
|
18
|
29
|
28
|
31
|
24
|
19
|
18
|
17
|
14
|
15
|
15
|
17
|
17
|
|
2025/07
|
13
|
20
|
22
|
27
|
19
|
15
|
10
|
11
|
15
|
21
|
25
|
24
|
23
|
32
|
43
|
41
|
38
|
22
|
14
|
16
|
10
|
19
|
19
|
16
|
16
|
13
|
18
|
16
|
18
|
19
|
33
|
|
2025/06
|
39
|
50
|
22
|
31
|
33
|
40
|
37
|
33
|
24
|
20
|
11
|
17
|
18
|
28
|
25
|
19
|
37
|
33
|
23
|
20
|
30
|
36
|
24
|
28
|
28
|
30
|
32
|
25
|
20
|
10
|
|
|
2025/05
|
39
|
50
|
56
|
37
|
39
|
46
|
56
|
46
|
40
|
34
|
36
|
37
|
35
|
33
|
32
|
45
|
52
|
22
|
36
|
46
|
37
|
36
|
50
|
32
|
68
|
56
|
28
|
32
|
20
|
36
|
50
|
|
2025/04
|
31
|
54
|
61
|
61
|
44
|
58
|
59
|
56
|
67
|
50
|
48
|
49
|
93
|
87
|
71
|
64
|
80
|
67
|
44
|
51
|
52
|
41
|
28
|
33
|
21
|
51
|
53
|
45
|
39
|
38
|
|
|
2025/03
|
63
|
58
|
54
|
31
|
20
|
18
|
45
|
60
|
62
|
46
|
72
|
52
|
31
|
37
|
19
|
31
|
43
|
50
|
50
|
60
|
56
|
53
|
66
|
74
|
90
|
71
|
62
|
33
|
44
|
31
|
29
|
|
2025/02
|
37
|
13
|
47
|
76
|
51
|
55
|
49
|
39
|
38
|
49
|
47
|
46
|
91
|
52
|
53
|
65
|
69
|
34
|
54
|
29
|
19
|
39
|
29
|
95
|
108
|
80
|
81
|
63
|
|||
|
2025/01
|
82
|
51
|
58
|
52
|
52
|
74
|
80
|
80
|
60
|
39
|
49
|
58
|
64
|
64
|
92
|
47
|
62
|
61
|
55
|
71
|
102
|
84
|
57
|
33
|
39
|
32
|
29
|
42
|
86
|
48
|
48
|
|
2024/12
|
55
|
60
|
62
|
59
|
53
|
33
|
40
|
69
|
39
|
54
|
27
|
35
|
18
|
102
|
90
|
59
|
54
|
66
|
39
|
35
|
61
|
65
|
49
|
51
|
51
|
84
|
122
|
66
|
66
|
58
|
72
|
|
2024/11
|
8
|
9
|
38
|
52
|
51
|
34
|
25
|
32
|
33
|
32
|
22
|
32
|
34
|
34
|
18
|
21
|
23
|
13
|
21
|
24
|
36
|
34
|
47
|
33
|
41
|
23
|
40
|
44
|
49
|
52
|
|
|
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