Air Quality
Excellent
No health implications.
4
PM2.5
20
PM10
87
O3
0.3
CO
4
SO2
10
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
7 Apr
71
Good
Tue
8 Apr
54
Good
Wed
9 Apr
67
Good
Thu
10 Apr
89
Good
Fri
11 Apr
80
Good
Sat
12 Apr
42
Excellent
Sun
13 Apr
47
Excellent
Tongzhou Air quality rank
Air quality in the last 12 months (Tongzhou)
|
2025/02
|
66
|
53
|
10
|
16
|
25
|
67
|
38
|
16
|
16
|
80
|
143
|
30
|
75
|
66
|
110
|
30
|
18
|
37
|
23
|
31
|
17
|
21
|
26
|
51
|
59
|
67
|
126
|
148
|
|||
|
2025/01
|
55
|
30
|
41
|
62
|
58
|
19
|
24
|
29
|
20
|
24
|
31
|
41
|
63
|
47
|
35
|
52
|
76
|
95
|
41
|
74
|
52
|
60
|
88
|
120
|
133
|
108
|
28
|
22
|
151
|
70
|
76
|
|
2024/12
|
68
|
15
|
39
|
44
|
23
|
36
|
28
|
33
|
51
|
37
|
45
|
69
|
33
|
39
|
40
|
39
|
17
|
18
|
55
|
55
|
26
|
30
|
39
|
86
|
93
|
33
|
31
|
46
|
76
|
81
|
50
|
|
2024/11
|
142
|
114
|
56
|
14
|
52
|
66
|
118
|
152
|
149
|
127
|
77
|
109
|
67
|
56
|
83
|
48
|
35
|
54
|
59
|
78
|
32
|
42
|
56
|
96
|
54
|
18
|
28
|
29
|
36
|
55
|
|
|
2024/10
|
11
|
16
|
40
|
69
|
90
|
96
|
22
|
31
|
106
|
18
|
69
|
88
|
119
|
157
|
52
|
52
|
63
|
39
|
11
|
41
|
56
|
24
|
56
|
92
|
178
|
229
|
40
|
54
|
113
|
94
|
105
|
|
2024/09
|
23
|
13
|
39
|
58
|
26
|
29
|
34
|
34
|
77
|
13
|
25
|
28
|
41
|
24
|
33
|
47
|
32
|
45
|
54
|
37
|
8
|
18
|
52
|
67
|
53
|
40
|
49
|
59
|
71
|
10
|
|
|
2024/08
|
17
|
40
|
31
|
27
|
15
|
45
|
48
|
35
|
68
|
24
|
23
|
8
|
14
|
27
|
50
|
50
|
37
|
25
|
29
|
11
|
16
|
24
|
45
|
30
|
41
|
24
|
19
|
33
|
47
|
56
|
59
|
|
2024/07
|
29
|
39
|
31
|
65
|
92
|
36
|
47
|
36
|
63
|
71
|
73
|
60
|
63
|
89
|
64
|
44
|
19
|
31
|
52
|
33
|
45
|
28
|
58
|
51
|
25
|
23
|
30
|
28
|
38
|
13
|
31
|
|
2024/06
|
38
|
46
|
57
|
59
|
66
|
73
|
49
|
46
|
59
|
66
|
55
|
54
|
56
|
37
|
41
|
50
|
60
|
59
|
77
|
64
|
58
|
97
|
105
|
23
|
42
|
64
|
62
|
66
|
69
|
41
|
|
|
2024/05
|
46
|
64
|
60
|
76
|
81
|
63
|
56
|
80
|
75
|
101
|
163
|
45
|
62
|
63
|
30
|
63
|
78
|
81
|
56
|
29
|
37
|
92
|
67
|
38
|
26
|
23
|
42
|
60
|
66
|
47
|
13
|
|
2024/04
|
82
|
84
|
68
|
68
|
72
|
106
|
51
|
98
|
58
|
66
|
127
|
140
|
84
|
57
|
110
|
59
|
93
|
93
|
67
|
50
|
87
|
92
|
18
|
70
|
104
|
110
|
89
|
29
|
24
|
32
|
|
|
2024/03
|
31
|
81
|
66
|
60
|
78
|
43
|
60
|
16
|
65
|
126
|
82
|
57
|
67
|
68
|
114
|
126
|
43
|
118
|
88
|
53
|
93
|
69
|
98
|
84
|
91
|
112
|
142
|
205
|
106
|
49
|
86
|
|
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