Air Quality
Excellent
No health implications.
25
PM2.5
33
PM10
40
O3
0.9
CO
6
SO2
10
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
2 Jun
138
Light
Wed
3 Jun
128
Light
Thu
4 Jun
104
Light
Fri
5 Jun
87
Good
Sat
6 Jun
81
Good
Sun
7 Jun
70
Good
Mon
8 Jun
35
Excellent
Air quality in the last 12 months (Tongzhou)
|
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
|
|
2025/06
|
15
|
8
|
40
|
64
|
53
|
39
|
32
|
10
|
16
|
12
|
11
|
11
|
10
|
22
|
15
|
27
|
40
|
37
|
30
|
19
|
19
|
9
|
10
|
13
|
31
|
36
|
28
|
25
|
25
|
21
|
|
|
2025/05
|
54
|
56
|
48
|
25
|
26
|
62
|
54
|
39
|
14
|
33
|
40
|
49
|
44
|
42
|
53
|
17
|
54
|
56
|
51
|
42
|
21
|
28
|
15
|
41
|
51
|
48
|
38
|
45
|
63
|
67
|
54
|
|
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