Air Quality
Excellent
No health implications.
14
PM2.5
23
PM10
29
O3
0.7
CO
7
SO2
24
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
23 Jul
88
Good
Fri
24 Jul
76
Good
Sat
25 Jul
94
Good
Sun
26 Jul
103
Light
Mon
27 Jul
93
Good
Tue
28 Jul
43
Excellent
Wed
29 Jul
30
Excellent
Air quality in the last 12 months (Tongzhou)
|
2026/06
|
64
|
42
|
64
|
57
|
36
|
33
|
35
|
33
|
34
|
56
|
67
|
74
|
48
|
36
|
30
|
30
|
23
|
27
|
19
|
25
|
26
|
31
|
30
|
27
|
25
|
32
|
33
|
61
|
30
|
24
|
|
|
2026/05
|
68
|
51
|
43
|
38
|
59
|
44
|
46
|
32
|
40
|
48
|
54
|
41
|
47
|
26
|
31
|
31
|
32
|
35
|
33
|
35
|
35
|
38
|
65
|
23
|
24
|
29
|
30
|
48
|
52
|
53
|
54
|
|
2026/04
|
106
|
89
|
43
|
50
|
81
|
68
|
34
|
35
|
30
|
53
|
57
|
32
|
33
|
26
|
39
|
45
|
44
|
34
|
35
|
46
|
83
|
29
|
32
|
44
|
49
|
65
|
78
|
45
|
29
|
48
|
|
|
2026/03
|
26
|
25
|
31
|
26
|
37
|
44
|
35
|
29
|
37
|
38
|
32
|
37
|
52
|
45
|
32
|
56
|
48
|
40
|
45
|
46
|
38
|
58
|
50
|
44
|
60
|
45
|
45
|
49
|
64
|
39
|
50
|
|
2026/02
|
63
|
100
|
57
|
65
|
121
|
63
|
28
|
37
|
34
|
49
|
85
|
104
|
101
|
83
|
113
|
40
|
55
|
114
|
98
|
51
|
43
|
114
|
57
|
20
|
42
|
20
|
17
|
38
|
|||
|
2026/01
|
22
|
28
|
56
|
77
|
113
|
101
|
66
|
92
|
79
|
92
|
50
|
53
|
98
|
91
|
136
|
181
|
81
|
29
|
24
|
18
|
36
|
48
|
81
|
103
|
51
|
17
|
50
|
34
|
34
|
29
|
18
|
|
2025/12
|
88
|
33
|
28
|
40
|
51
|
72
|
102
|
76
|
45
|
33
|
87
|
22
|
30
|
66
|
67
|
83
|
110
|
46
|
49
|
108
|
24
|
24
|
34
|
61
|
36
|
19
|
32
|
80
|
111
|
70
|
26
|
|
2025/11
|
144
|
98
|
19
|
18
|
21
|
29
|
34
|
28
|
24
|
41
|
18
|
23
|
34
|
80
|
50
|
35
|
28
|
31
|
54
|
68
|
91
|
136
|
143
|
105
|
81
|
51
|
148
|
109
|
93
|
102
|
|
|
2025/10
|
35
|
27
|
22
|
20
|
23
|
32
|
20
|
14
|
16
|
22
|
33
|
36
|
39
|
11
|
22
|
12
|
10
|
10
|
14
|
15
|
11
|
14
|
17
|
23
|
30
|
32
|
44
|
19
|
20
|
18
|
16
|
|
2025/09
|
26
|
12
|
21
|
25
|
22
|
24
|
29
|
21
|
9
|
15
|
17
|
27
|
23
|
31
|
30
|
32
|
26
|
15
|
18
|
16
|
15
|
16
|
22
|
12
|
11
|
17
|
14
|
27
|
14
|
22
|
|
|
2025/08
|
19
|
12
|
19
|
14
|
22
|
32
|
26
|
28
|
31
|
13
|
11
|
22
|
20
|
12
|
10
|
18
|
28
|
14
|
18
|
18
|
26
|
43
|
43
|
37
|
25
|
22
|
20
|
14
|
14
|
12
|
19
|
|
2025/07
|
18
|
24
|
28
|
29
|
33
|
27
|
15
|
9
|
13
|
41
|
22
|
18
|
22
|
30
|
37
|
46
|
30
|
16
|
14
|
12
|
12
|
12
|
10
|
18
|
17
|
10
|
10
|
15
|
13
|
9
|
10
|
|
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