Air Quality
Excellent
No health implications.
31
PM2.5
44
PM10
61
O3
0.8
CO
4
SO2
18
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
1 Mar
89
Good
Sun
2 Mar
89
Good
Mon
3 Mar
46
Excellent
Tue
4 Mar
42
Excellent
Wed
5 Mar
44
Excellent
Thu
6 Mar
37
Excellent
Fri
7 Mar
17
Excellent
Air quality in the last 12 months (Tongzhou)
|
2025/01
|
60
|
42
|
46
|
39
|
92
|
95
|
65
|
66
|
34
|
35
|
67
|
86
|
85
|
111
|
50
|
66
|
80
|
79
|
114
|
169
|
94
|
42
|
36
|
35
|
32
|
44
|
62
|
90
|
145
|
52
|
48
|
|
2024/12
|
73
|
90
|
53
|
33
|
87
|
147
|
134
|
37
|
46
|
37
|
73
|
44
|
68
|
58
|
65
|
82
|
98
|
71
|
39
|
63
|
92
|
43
|
42
|
59
|
93
|
111
|
52
|
60
|
77
|
83
|
78
|
|
2024/11
|
9
|
49
|
56
|
51
|
32
|
27
|
28
|
27
|
30
|
37
|
42
|
45
|
41
|
34
|
52
|
22
|
33
|
26
|
24
|
31
|
71
|
75
|
27
|
27
|
26
|
47
|
71
|
71
|
50
|
72
|
|
|
2024/10
|
18
|
27
|
18
|
22
|
16
|
8
|
10
|
36
|
35
|
52
|
71
|
59
|
26
|
19
|
47
|
36
|
28
|
34
|
25
|
26
|
21
|
30
|
43
|
28
|
29
|
22
|
18
|
44
|
27
|
24
|
21
|
|
2024/09
|
34
|
35
|
17
|
18
|
21
|
23
|
41
|
26
|
18
|
25
|
11
|
18
|
18
|
14
|
18
|
19
|
17
|
15
|
16
|
9
|
18
|
26
|
21
|
23
|
16
|
11
|
23
|
25
|
30
|
32
|
|
|
2024/08
|
32
|
32
|
41
|
29
|
32
|
25
|
30
|
32
|
28
|
39
|
37
|
33
|
40
|
18
|
18
|
26
|
20
|
14
|
12
|
22
|
25
|
44
|
38
|
24
|
18
|
16
|
27
|
24
|
16
|
18
|
22
|
|
2024/07
|
26
|
32
|
29
|
33
|
29
|
42
|
39
|
43
|
40
|
13
|
19
|
17
|
19
|
27
|
51
|
44
|
39
|
32
|
37
|
37
|
36
|
37
|
26
|
19
|
21
|
24
|
26
|
21
|
21
|
21
|
31
|
|
2024/06
|
58
|
33
|
48
|
43
|
28
|
23
|
25
|
23
|
41
|
35
|
15
|
20
|
38
|
29
|
27
|
27
|
16
|
26
|
16
|
24
|
35
|
19
|
32
|
39
|
38
|
17
|
23
|
27
|
28
|
12
|
|
|
2024/05
|
41
|
43
|
33
|
38
|
31
|
61
|
56
|
45
|
28
|
39
|
40
|
87
|
70
|
51
|
53
|
43
|
45
|
38
|
30
|
24
|
25
|
36
|
27
|
21
|
27
|
31
|
25
|
30
|
35
|
26
|
39
|
|
2024/04
|
69
|
32
|
32
|
64
|
44
|
50
|
46
|
45
|
64
|
61
|
50
|
28
|
19
|
23
|
38
|
44
|
58
|
89
|
88
|
34
|
23
|
26
|
46
|
49
|
47
|
30
|
20
|
19
|
26
|
44
|
|
|
2024/03
|
43
|
62
|
78
|
38
|
27
|
58
|
52
|
79
|
90
|
47
|
63
|
100
|
67
|
52
|
42
|
49
|
73
|
45
|
102
|
90
|
60
|
70
|
66
|
44
|
35
|
41
|
48
|
69
|
68
|
79
|
91
|
|
2024/02
|
27
|
25
|
24
|
30
|
53
|
66
|
48
|
91
|
143
|
181
|
177
|
99
|
56
|
72
|
56
|
30
|
29
|
34
|
42
|
26
|
20
|
35
|
44
|
55
|
101
|
84
|
49
|
39
|
27
|
||
|
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