Air Quality
Excellent
No health implications.
15
PM2.5
27
PM10
117
O3
0.5
CO
8
SO2
5
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
17 Jul
76
Good
Fri
18 Jul
71
Good
Sat
19 Jul
74
Good
Sun
20 Jul
70
Good
Mon
21 Jul
75
Good
Tue
22 Jul
70
Good
Wed
23 Jul
34
Excellent
Air quality in the last 12 months (Tongwei)
|
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
|
|
|
2024/08
|
31
|
33
|
27
|
24
|
24
|
26
|
21
|
24
|
69
|
69
|
44
|
39
|
34
|
34
|
41
|
33
|
31
|
28
|
32
|
29
|
34
|
35
|
40
|
39
|
35
|
32
|
26
|
33
|
33
|
29
|
45
|
|
2024/07
|
32
|
32
|
30
|
35
|
50
|
49
|
25
|
23
|
39
|
49
|
41
|
58
|
32
|
26
|
16
|
20
|
26
|
26
|
19
|
19
|
116
|
21
|
29
|
110
|
74
|
53
|
48
|
40
|
31
|
30
|
32
|
|
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