Air Quality
Excellent
No health implications.
20
PM2.5
42
PM10
97
O3
0.4
CO
5
SO2
16
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
14 May
100
Good
Fri
15 May
90
Good
Sat
16 May
98
Good
Sun
17 May
82
Good
Mon
18 May
65
Good
Tue
19 May
59
Good
Wed
20 May
32
Excellent
Air quality in the last 12 months (Tongcheng)
|
2026/04
|
65
|
49
|
33
|
49
|
62
|
66
|
58
|
42
|
27
|
33
|
57
|
28
|
30
|
25
|
36
|
49
|
44
|
54
|
55
|
44
|
39
|
15
|
21
|
29
|
31
|
37
|
50
|
30
|
29
|
34
|
|
|
2026/03
|
30
|
17
|
60
|
67
|
53
|
55
|
65
|
67
|
70
|
74
|
56
|
73
|
67
|
65
|
109
|
32
|
28
|
27
|
75
|
95
|
75
|
53
|
67
|
51
|
57
|
75
|
76
|
58
|
55
|
47
|
82
|
|
2026/02
|
37
|
56
|
76
|
69
|
74
|
67
|
43
|
53
|
50
|
63
|
81
|
84
|
72
|
61
|
65
|
33
|
91
|
82
|
76
|
55
|
36
|
105
|
133
|
21
|
38
|
23
|
30
|
37
|
|||
|
2026/01
|
26
|
60
|
75
|
92
|
70
|
66
|
57
|
62
|
58
|
87
|
69
|
62
|
77
|
66
|
75
|
90
|
196
|
137
|
20
|
42
|
60
|
47
|
71
|
81
|
135
|
70
|
58
|
85
|
85
|
18
|
34
|
|
2025/12
|
115
|
96
|
79
|
67
|
76
|
83
|
77
|
119
|
77
|
85
|
133
|
72
|
40
|
65
|
57
|
63
|
186
|
178
|
128
|
188
|
54
|
47
|
48
|
82
|
78
|
46
|
59
|
70
|
79
|
161
|
50
|
|
2025/11
|
61
|
63
|
60
|
65
|
81
|
64
|
15
|
27
|
61
|
68
|
45
|
41
|
55
|
90
|
104
|
89
|
48
|
30
|
37
|
55
|
73
|
70
|
95
|
96
|
95
|
78
|
188
|
120
|
80
|
70
|
|
|
2025/10
|
26
|
38
|
20
|
33
|
54
|
52
|
67
|
55
|
45
|
57
|
49
|
43
|
24
|
29
|
48
|
33
|
30
|
13
|
20
|
29
|
24
|
30
|
33
|
43
|
52
|
43
|
62
|
75
|
86
|
73
|
49
|
|
2025/09
|
20
|
24
|
26
|
35
|
37
|
37
|
44
|
43
|
23
|
23
|
22
|
24
|
19
|
24
|
22
|
34
|
30
|
24
|
30
|
18
|
34
|
37
|
47
|
10
|
13
|
25
|
33
|
33
|
32
|
26
|
|
|
2025/08
|
22
|
22
|
25
|
29
|
31
|
17
|
18
|
22
|
28
|
26
|
13
|
22
|
31
|
27
|
18
|
21
|
24
|
28
|
27
|
22
|
22
|
19
|
20
|
26
|
27
|
18
|
30
|
30
|
34
|
22
|
16
|
|
2025/07
|
23
|
27
|
31
|
36
|
42
|
41
|
43
|
24
|
19
|
29
|
38
|
22
|
27
|
37
|
35
|
36
|
22
|
34
|
34
|
16
|
17
|
10
|
19
|
20
|
24
|
25
|
23
|
21
|
22
|
22
|
20
|
|
2025/06
|
12
|
12
|
34
|
47
|
43
|
38
|
30
|
14
|
27
|
27
|
36
|
35
|
43
|
28
|
17
|
38
|
34
|
17
|
13
|
16
|
13
|
14
|
26
|
34
|
37
|
32
|
19
|
13
|
17
|
25
|
|
|
2025/05
|
53
|
54
|
59
|
49
|
48
|
145
|
123
|
56
|
31
|
36
|
44
|
49
|
47
|
54
|
58
|
33
|
58
|
101
|
64
|
38
|
23
|
33
|
44
|
67
|
60
|
65
|
73
|
61
|
42
|
42
|
35
|
|
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