Air Quality
Excellent
No health implications.
3
PM2.5
9
PM10
48
O3
0.4
CO
5
SO2
20
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
13 Oct
48
Excellent
Wed
14 Oct
56
Good
Thu
15 Oct
69
Good
Fri
16 Oct
60
Good
Sat
17 Oct
48
Excellent
Sun
18 Oct
43
Excellent
Mon
19 Oct
15
Excellent
Air quality in the last 12 months (Tongzhou)
|
2026/08
|
33
|
39
|
33
|
30
|
45
|
65
|
40
|
28
|
43
|
56
|
45
|
21
|
17
|
27
|
44
|
22
|
25
|
38
|
44
|
52
|
66
|
38
|
36
|
33
|
43
|
21
|
37
|
23
|
33
|
27
|
25
|
|
2026/07
|
43
|
86
|
75
|
58
|
36
|
43
|
43
|
45
|
62
|
41
|
32
|
27
|
33
|
33
|
54
|
48
|
44
|
36
|
47
|
43
|
43
|
32
|
45
|
48
|
52
|
46
|
46
|
53
|
36
|
39
|
40
|
|
2026/06
|
62
|
94
|
46
|
30
|
25
|
32
|
19
|
32
|
27
|
44
|
27
|
61
|
53
|
36
|
69
|
39
|
38
|
72
|
77
|
31
|
32
|
56
|
50
|
66
|
33
|
43
|
60
|
82
|
59
|
46
|
|
|
2026/05
|
69
|
49
|
28
|
53
|
61
|
56
|
43
|
52
|
68
|
61
|
63
|
80
|
96
|
83
|
65
|
53
|
27
|
25
|
41
|
33
|
35
|
43
|
34
|
79
|
42
|
29
|
47
|
30
|
39
|
56
|
72
|
|
2026/04
|
53
|
78
|
107
|
67
|
41
|
30
|
33
|
73
|
66
|
56
|
67
|
83
|
92
|
83
|
101
|
98
|
74
|
122
|
84
|
100
|
72
|
54
|
60
|
64
|
73
|
57
|
49
|
41
|
33
|
54
|
|
|
2026/03
|
84
|
122
|
105
|
72
|
71
|
46
|
85
|
67
|
32
|
89
|
66
|
97
|
86
|
47
|
57
|
73
|
154
|
37
|
57
|
61
|
92
|
109
|
107
|
165
|
176
|
199
|
34
|
78
|
84
|
28
|
54
|
|
2026/02
|
47
|
26
|
83
|
104
|
64
|
10
|
18
|
34
|
91
|
98
|
43
|
83
|
90
|
100
|
15
|
23
|
75
|
30
|
67
|
91
|
165
|
47
|
33
|
70
|
103
|
79
|
38
|
75
|
|||
|
2026/01
|
29
|
43
|
51
|
83
|
46
|
46
|
28
|
63
|
94
|
37
|
33
|
66
|
33
|
60
|
99
|
50
|
27
|
42
|
21
|
20
|
27
|
50
|
47
|
57
|
48
|
66
|
37
|
66
|
65
|
110
|
83
|
|
2025/12
|
31
|
24
|
32
|
37
|
60
|
94
|
58
|
34
|
71
|
84
|
72
|
41
|
36
|
50
|
92
|
67
|
110
|
196
|
149
|
16
|
33
|
70
|
53
|
26
|
26
|
66
|
67
|
141
|
35
|
27
|
21
|
|
2025/11
|
63
|
15
|
57
|
83
|
191
|
153
|
84
|
64
|
31
|
64
|
104
|
67
|
22
|
66
|
85
|
31
|
21
|
29
|
49
|
29
|
60
|
73
|
94
|
63
|
34
|
73
|
30
|
81
|
99
|
99
|
|
|
2025/10
|
49
|
56
|
47
|
57
|
55
|
23
|
51
|
26
|
9
|
13
|
21
|
42
|
54
|
51
|
82
|
71
|
35
|
10
|
16
|
19
|
32
|
58
|
66
|
99
|
138
|
35
|
40
|
128
|
180
|
152
|
61
|
|
2025/09
|
26
|
45
|
47
|
66
|
56
|
26
|
40
|
31
|
57
|
40
|
59
|
73
|
53
|
37
|
31
|
23
|
18
|
29
|
40
|
44
|
57
|
36
|
50
|
63
|
50
|
55
|
57
|
43
|
41
|
42
|
|
|
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