Air Quality
Excellent
No health implications.
10
PM2.5
17
PM10
87
O3
0.5
CO
1
SO2
10
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
7 Aug
73
Good
Sat
8 Aug
60
Good
Sun
9 Aug
68
Good
Mon
10 Aug
81
Good
Tue
11 Aug
67
Good
Wed
12 Aug
54
Good
Thu
13 Aug
46
Excellent
Air quality in the last 12 months (Tongzhou)
|
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
|
|
|
2025/08
|
56
|
58
|
28
|
35
|
30
|
45
|
24
|
38
|
13
|
33
|
39
|
51
|
20
|
33
|
43
|
22
|
39
|
37
|
27
|
28
|
28
|
26
|
26
|
15
|
35
|
33
|
25
|
15
|
45
|
33
|
26
|
|
2025/07
|
38
|
39
|
24
|
42
|
32
|
13
|
37
|
35
|
51
|
28
|
52
|
61
|
19
|
44
|
48
|
32
|
21
|
43
|
52
|
22
|
32
|
58
|
37
|
24
|
31
|
45
|
43
|
26
|
12
|
21
|
45
|
|
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