Air Quality
Excellent
No health implications.
22
PM2.5
32
PM10
67
O3
0.6
CO
6
SO2
20
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
29 Apr
64
Good
Tue
30 Apr
53
Good
Wed
1 May
75
Good
Thu
2 May
85
Good
Fri
3 May
61
Good
Sat
4 May
54
Good
Sun
5 May
56
Good
Air quality in the last 12 months (Tongcheng)
|
2024/02
|
18
|
32
|
43
|
51
|
82
|
97
|
102
|
122
|
122
|
163
|
94
|
70
|
44
|
42
|
49
|
30
|
28
|
41
|
64
|
16
|
21
|
44
|
57
|
61
|
67
|
98
|
75
|
85
|
53
|
||
|
2024/01
|
162
|
129
|
80
|
64
|
68
|
125
|
186
|
83
|
123
|
188
|
129
|
79
|
79
|
173
|
89
|
59
|
47
|
32
|
18
|
68
|
86
|
45
|
25
|
44
|
59
|
66
|
75
|
72
|
96
|
99
|
76
|
|
2023/12
|
46
|
57
|
73
|
92
|
87
|
93
|
76
|
61
|
50
|
77
|
17
|
47
|
67
|
44
|
25
|
46
|
34
|
48
|
67
|
99
|
51
|
52
|
53
|
63
|
69
|
70
|
133
|
302
|
268
|
193
|
121
|
|
2023/11
|
59
|
54
|
65
|
116
|
78
|
41
|
45
|
47
|
46
|
39
|
35
|
54
|
65
|
66
|
67
|
86
|
97
|
67
|
62
|
64
|
57
|
57
|
89
|
58
|
57
|
81
|
80
|
89
|
93
|
53
|
|
|
2023/10
|
41
|
34
|
22
|
36
|
45
|
40
|
23
|
24
|
35
|
51
|
58
|
51
|
49
|
53
|
62
|
59
|
62
|
57
|
78
|
33
|
47
|
52
|
53
|
54
|
63
|
78
|
97
|
100
|
72
|
74
|
68
|
|
2023/09
|
40
|
45
|
52
|
46
|
35
|
37
|
42
|
52
|
60
|
55
|
66
|
37
|
26
|
25
|
29
|
37
|
39
|
41
|
48
|
25
|
25
|
23
|
19
|
34
|
39
|
42
|
53
|
57
|
58
|
29
|
|
|
2023/08
|
29
|
26
|
33
|
40
|
47
|
36
|
32
|
35
|
40
|
43
|
56
|
49
|
36
|
37
|
38
|
43
|
45
|
46
|
41
|
35
|
36
|
32
|
44
|
58
|
61
|
54
|
30
|
23
|
34
|
33
|
37
|
|
2023/07
|
30
|
34
|
26
|
25
|
37
|
31
|
27
|
22
|
19
|
27
|
35
|
39
|
38
|
36
|
41
|
48
|
35
|
32
|
23
|
19
|
19
|
15
|
22
|
28
|
38
|
34
|
29
|
17
|
13
|
16
|
22
|
|
2023/06
|
52
|
70
|
63
|
64
|
28
|
31
|
41
|
43
|
55
|
52
|
60
|
69
|
55
|
66
|
73
|
59
|
39
|
25
|
19
|
32
|
50
|
50
|
34
|
23
|
28
|
29
|
27
|
23
|
24
|
24
|
|
|
2023/05
|
77
|
58
|
45
|
34
|
24
|
39
|
45
|
38
|
55
|
53
|
47
|
53
|
58
|
64
|
60
|
55
|
28
|
37
|
38
|
58
|
65
|
111
|
81
|
45
|
47
|
48
|
22
|
31
|
40
|
30
|
39
|
|
2023/04
|
61
|
62
|
41
|
19
|
26
|
39
|
60
|
56
|
57
|
62
|
112
|
408
|
116
|
59
|
131
|
89
|
74
|
61
|
67
|
54
|
54
|
61
|
33
|
38
|
52
|
45
|
43
|
47
|
119
|
89
|
|
|
2023/03
|
89
|
97
|
79
|
89
|
80
|
64
|
61
|
79
|
70
|
58
|
56
|
101
|
66
|
70
|
96
|
111
|
25
|
41
|
66
|
55
|
35
|
25
|
68
|
109
|
52
|
82
|
97
|
83
|
79
|
56
|
48
|
|
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