Air Quality
Excellent
No health implications.
12
PM2.5
27
PM10
57
O3
0.6
CO
5
SO2
19
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
9 Apr
93
Good
Fri
10 Apr
104
Light
Sat
11 Apr
84
Good
Sun
12 Apr
62
Good
Mon
13 Apr
69
Good
Tue
14 Apr
85
Good
Wed
15 Apr
16
Excellent
Air quality in the last 12 months (Tongzhou)
|
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
|
|
2025/04
|
45
|
69
|
50
|
49
|
60
|
59
|
78
|
74
|
95
|
68
|
58
|
96
|
96
|
63
|
56
|
57
|
63
|
58
|
50
|
34
|
36
|
41
|
59
|
71
|
52
|
42
|
40
|
37
|
49
|
55
|
|
|
2025/03
|
49
|
56
|
14
|
9
|
21
|
39
|
55
|
65
|
49
|
30
|
55
|
20
|
39
|
40
|
26
|
44
|
52
|
42
|
43
|
62
|
65
|
63
|
77
|
66
|
94
|
78
|
78
|
44
|
68
|
33
|
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