Air Quality
Excellent
No health implications.
23
PM2.5
30
PM10
117
O3
0.6
CO
5
SO2
11
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
20 Jul
75
Good
Mon
21 Jul
78
Good
Tue
22 Jul
69
Good
Wed
23 Jul
71
Good
Thu
24 Jul
69
Good
Fri
25 Jul
25
Excellent
Sat
26 Jul
25
Excellent
Air quality in the last 12 months (Tongcheng)
|
2025/06
|
12
|
20
|
31
|
38
|
35
|
32
|
26
|
19
|
28
|
25
|
20
|
24
|
22
|
19
|
23
|
31
|
19
|
11
|
10
|
16
|
15
|
11
|
14
|
20
|
24
|
29
|
19
|
12
|
12
|
16
|
|
|
2025/05
|
46
|
56
|
57
|
55
|
35
|
76
|
98
|
37
|
37
|
43
|
35
|
39
|
36
|
50
|
47
|
18
|
29
|
57
|
40
|
20
|
20
|
19
|
34
|
49
|
43
|
40
|
45
|
24
|
19
|
19
|
14
|
|
2025/04
|
63
|
54
|
56
|
57
|
62
|
65
|
63
|
59
|
55
|
41
|
41
|
228
|
140
|
135
|
56
|
55
|
68
|
67
|
54
|
61
|
34
|
39
|
50
|
36
|
43
|
38
|
39
|
53
|
55
|
45
|
|
|
2025/03
|
40
|
31
|
15
|
30
|
42
|
46
|
51
|
52
|
51
|
45
|
36
|
53
|
38
|
30
|
25
|
43
|
36
|
38
|
44
|
35
|
41
|
48
|
55
|
54
|
50
|
63
|
81
|
66
|
66
|
61
|
68
|
|
2025/02
|
52
|
43
|
56
|
51
|
48
|
48
|
73
|
44
|
40
|
50
|
50
|
70
|
87
|
75
|
59
|
49
|
43
|
31
|
43
|
44
|
61
|
28
|
62
|
80
|
70
|
53
|
46
|
45
|
|||
|
2025/01
|
74
|
94
|
145
|
160
|
88
|
68
|
78
|
72
|
61
|
52
|
57
|
62
|
66
|
79
|
70
|
60
|
59
|
71
|
71
|
89
|
74
|
72
|
168
|
115
|
25
|
31
|
53
|
66
|
137
|
58
|
73
|
|
2024/12
|
40
|
49
|
86
|
90
|
43
|
47
|
47
|
81
|
60
|
58
|
57
|
72
|
74
|
53
|
55
|
48
|
54
|
68
|
68
|
80
|
82
|
63
|
67
|
77
|
80
|
108
|
127
|
64
|
54
|
82
|
94
|
|
2024/11
|
58
|
75
|
60
|
67
|
67
|
52
|
43
|
42
|
52
|
50
|
47
|
49
|
51
|
65
|
70
|
73
|
19
|
15
|
29
|
29
|
37
|
41
|
52
|
56
|
30
|
26
|
35
|
44
|
44
|
43
|
|
|
2024/10
|
20
|
53
|
45
|
27
|
43
|
81
|
44
|
29
|
39
|
56
|
59
|
82
|
151
|
74
|
64
|
44
|
27
|
28
|
18
|
25
|
36
|
19
|
28
|
30
|
47
|
50
|
46
|
67
|
51
|
44
|
45
|
|
2024/09
|
35
|
40
|
44
|
37
|
38
|
47
|
41
|
30
|
37
|
33
|
34
|
33
|
27
|
30
|
36
|
30
|
38
|
35
|
31
|
35
|
30
|
32
|
33
|
39
|
45
|
53
|
55
|
40
|
25
|
43
|
|
|
2024/08
|
13
|
17
|
18
|
19
|
24
|
23
|
27
|
25
|
23
|
25
|
55
|
58
|
30
|
26
|
23
|
27
|
34
|
31
|
28
|
29
|
28
|
29
|
18
|
18
|
20
|
29
|
25
|
16
|
36
|
31
|
32
|
|
2024/07
|
12
|
19
|
21
|
16
|
17
|
16
|
20
|
18
|
22
|
28
|
30
|
25
|
26
|
27
|
23
|
21
|
15
|
16
|
16
|
16
|
20
|
19
|
19
|
25
|
32
|
26
|
18
|
7
|
8
|
12
|
15
|
|
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