Air Quality
Excellent
No health implications.
13
PM2.5
20
PM10
57
O3
0.4
CO
8
SO2
8
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
9 Oct
57
Good
Fri
10 Oct
54
Good
Sat
11 Oct
53
Good
Sun
12 Oct
52
Good
Mon
13 Oct
57
Good
Tue
14 Oct
59
Good
Wed
15 Oct
27
Excellent
Air quality in the last 12 months (Tongwei)
|
2025/08
|
38
|
30
|
31
|
26
|
26
|
30
|
32
|
27
|
26
|
27
|
40
|
34
|
32
|
33
|
34
|
28
|
25
|
24
|
25
|
60
|
28
|
30
|
23
|
26
|
24
|
25
|
21
|
23
|
24
|
28
|
29
|
|
2025/07
|
26
|
21
|
20
|
21
|
24
|
27
|
21
|
21
|
25
|
28
|
21
|
26
|
25
|
25
|
39
|
45
|
38
|
30
|
73
|
28
|
25
|
23
|
26
|
23
|
21
|
22
|
23
|
24
|
29
|
24
|
35
|
|
2025/06
|
39
|
42
|
37
|
33
|
36
|
41
|
42
|
47
|
37
|
41
|
41
|
41
|
38
|
57
|
65
|
42
|
44
|
39
|
44
|
41
|
33
|
25
|
25
|
27
|
24
|
26
|
22
|
28
|
33
|
20
|
|
|
2025/05
|
70
|
87
|
106
|
126
|
102
|
113
|
71
|
73
|
70
|
48
|
42
|
58
|
72
|
59
|
49
|
63
|
114
|
56
|
62
|
56
|
66
|
93
|
49
|
38
|
29
|
46
|
29
|
26
|
29
|
83
|
60
|
|
2025/04
|
110
|
96
|
86
|
109
|
87
|
69
|
53
|
99
|
111
|
75
|
193
|
362
|
108
|
67
|
66
|
131
|
79
|
253
|
146
|
96
|
113
|
95
|
57
|
56
|
58
|
44
|
56
|
53
|
62
|
122
|
|
|
2025/03
|
63
|
47
|
45
|
53
|
47
|
48
|
62
|
64
|
52
|
43
|
176
|
89
|
89
|
47
|
51
|
52
|
48
|
40
|
50
|
61
|
55
|
56
|
68
|
58
|
70
|
373
|
115
|
103
|
80
|
79
|
77
|
|
2025/02
|
62
|
59
|
48
|
47
|
50
|
50
|
69
|
70
|
60
|
50
|
77
|
82
|
66
|
58
|
58
|
73
|
62
|
53
|
66
|
58
|
58
|
54
|
47
|
53
|
56
|
48
|
43
|
51
|
|||
|
2025/01
|
64
|
60
|
73
|
65
|
61
|
57
|
54
|
59
|
59
|
60
|
67
|
66
|
66
|
62
|
59
|
57
|
63
|
64
|
63
|
66
|
71
|
71
|
100
|
110
|
67
|
78
|
80
|
82
|
114
|
80
|
70
|
|
2024/12
|
60
|
65
|
59
|
55
|
56
|
60
|
50
|
53
|
49
|
67
|
64
|
56
|
53
|
62
|
66
|
63
|
68
|
58
|
62
|
66
|
60
|
55
|
61
|
64
|
66
|
68
|
56
|
61
|
58
|
53
|
53
|
|
2024/11
|
45
|
41
|
48
|
55
|
52
|
40
|
40
|
41
|
51
|
54
|
52
|
57
|
57
|
45
|
60
|
46
|
40
|
29
|
40
|
50
|
53
|
46
|
47
|
41
|
49
|
56
|
61
|
65
|
56
|
62
|
|
|
2024/10
|
31
|
32
|
34
|
28
|
37
|
48
|
40
|
39
|
42
|
44
|
40
|
29
|
34
|
31
|
34
|
41
|
30
|
50
|
34
|
31
|
39
|
38
|
52
|
41
|
49
|
48
|
40
|
46
|
45
|
38
|
36
|
|
2024/09
|
49
|
35
|
34
|
30
|
21
|
25
|
22
|
28
|
27
|
23
|
23
|
30
|
25
|
28
|
28
|
29
|
31
|
33
|
35
|
39
|
31
|
37
|
41
|
38
|
30
|
24
|
48
|
60
|
33
|
27
|
|
|
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