Air Quality
Excellent
No health implications.
25
PM2.5
33
PM10
120
O3
0.7
CO
6
SO2
11
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
21 May
49
Excellent
Fri
22 May
46
Excellent
Sat
23 May
45
Excellent
Sun
24 May
49
Excellent
Mon
25 May
47
Excellent
Tue
26 May
44
Excellent
Wed
27 May
44
Excellent
Air quality in the last 12 months (Tongcheng)
|
2026/04
|
46
|
34
|
36
|
38
|
62
|
57
|
75
|
58
|
37
|
38
|
42
|
38
|
44
|
30
|
32
|
44
|
42
|
50
|
52
|
53
|
22
|
19
|
32
|
37
|
40
|
45
|
55
|
30
|
27
|
30
|
|
|
2026/03
|
18
|
30
|
55
|
57
|
65
|
71
|
68
|
67
|
76
|
60
|
46
|
59
|
45
|
48
|
95
|
25
|
22
|
26
|
49
|
64
|
41
|
49
|
48
|
69
|
73
|
59
|
63
|
63
|
54
|
35
|
40
|
|
2026/02
|
55
|
62
|
73
|
79
|
86
|
103
|
56
|
63
|
57
|
62
|
70
|
75
|
65
|
49
|
60
|
34
|
80
|
69
|
81
|
47
|
37
|
52
|
68
|
40
|
35
|
22
|
34
|
37
|
|||
|
2026/01
|
34
|
54
|
66
|
57
|
87
|
80
|
65
|
69
|
65
|
61
|
74
|
73
|
73
|
65
|
122
|
110
|
167
|
170
|
32
|
43
|
63
|
76
|
77
|
76
|
80
|
141
|
111
|
78
|
68
|
35
|
43
|
|
2025/12
|
87
|
108
|
71
|
68
|
93
|
89
|
102
|
120
|
127
|
119
|
134
|
131
|
36
|
50
|
52
|
57
|
113
|
126
|
76
|
123
|
79
|
58
|
51
|
81
|
66
|
68
|
76
|
69
|
74
|
137
|
112
|
|
2025/11
|
54
|
51
|
54
|
50
|
52
|
46
|
46
|
16
|
33
|
41
|
66
|
52
|
46
|
55
|
58
|
52
|
58
|
30
|
33
|
41
|
51
|
58
|
62
|
53
|
74
|
57
|
87
|
70
|
60
|
53
|
|
|
2025/10
|
38
|
40
|
36
|
41
|
49
|
34
|
45
|
58
|
46
|
51
|
72
|
98
|
59
|
55
|
57
|
29
|
37
|
13
|
9
|
17
|
19
|
27
|
38
|
39
|
64
|
73
|
72
|
68
|
65
|
81
|
51
|
|
2025/09
|
19
|
19
|
21
|
24
|
27
|
31
|
35
|
24
|
26
|
25
|
23
|
21
|
30
|
34
|
29
|
29
|
34
|
29
|
21
|
20
|
29
|
40
|
28
|
13
|
17
|
34
|
44
|
46
|
46
|
41
|
|
|
2025/08
|
33
|
40
|
36
|
29
|
24
|
17
|
14
|
12
|
21
|
30
|
19
|
22
|
26
|
19
|
10
|
15
|
19
|
22
|
16
|
14
|
16
|
15
|
20
|
21
|
15
|
18
|
24
|
22
|
22
|
27
|
19
|
|
2025/07
|
14
|
14
|
15
|
22
|
29
|
30
|
32
|
30
|
23
|
17
|
30
|
21
|
18
|
23
|
22
|
22
|
29
|
26
|
32
|
22
|
13
|
10
|
12
|
18
|
21
|
25
|
19
|
20
|
23
|
21
|
23
|
|
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
|
|
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