Air Quality
Excellent
No health implications.
16
PM2.5
38
PM10
81
O3
0.4
CO
5
SO2
17
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
26 Apr
64
Good
Sun
27 Apr
67
Good
Mon
28 Apr
93
Good
Tue
29 Apr
89
Good
Wed
30 Apr
95
Good
Thu
1 May
93
Good
Fri
2 May
42
Excellent
Air quality in the last 12 months (Tongcheng)
|
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
|
|
2024/06
|
15
|
30
|
28
|
18
|
21
|
19
|
26
|
31
|
20
|
12
|
16
|
22
|
20
|
20
|
22
|
23
|
26
|
17
|
13
|
19
|
21
|
12
|
14
|
14
|
15
|
16
|
9
|
18
|
14
|
12
|
|
|
2024/05
|
30
|
30
|
26
|
19
|
23
|
23
|
35
|
44
|
41
|
44
|
46
|
89
|
73
|
58
|
57
|
57
|
54
|
46
|
52
|
35
|
37
|
15
|
18
|
25
|
25
|
26
|
21
|
18
|
24
|
38
|
40
|
|
2024/04
|
23
|
15
|
37
|
52
|
47
|
44
|
45
|
40
|
29
|
30
|
36
|
28
|
25
|
28
|
39
|
36
|
36
|
30
|
19
|
28
|
41
|
37
|
27
|
57
|
62
|
57
|
40
|
26
|
31
|
19
|
|
|
2024/03
|
50
|
34
|
29
|
30
|
55
|
66
|
47
|
64
|
65
|
64
|
62
|
52
|
52
|
45
|
56
|
62
|
53
|
35
|
42
|
72
|
62
|
56
|
29
|
40
|
21
|
24
|
39
|
31
|
33
|
30
|
23
|
|
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