Air Quality
Excellent
No health implications.
6
PM2.5
12
PM10
54
O3
0.3
CO
4
SO2
16
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
9 Feb
60
Good
Mon
10 Feb
95
Good
Tue
11 Feb
108
Light
Wed
12 Feb
46
Excellent
Thu
13 Feb
56
Good
Fri
14 Feb
28
Excellent
Sat
15 Feb
23
Excellent
Tongzhou Air quality rank
Air quality in the last 12 months (Tongzhou)
|
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
|
|
2024/02
|
35
|
69
|
83
|
104
|
102
|
74
|
28
|
33
|
60
|
34
|
92
|
170
|
176
|
86
|
26
|
69
|
100
|
98
|
26
|
26
|
25
|
22
|
45
|
66
|
54
|
74
|
69
|
79
|
48
|
||
|
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