Air Quality
Good
Some pollutants may slightly affect very few hypersensitive individuals.
45
*
PM2.5
70
PM10
61
O3
0.4
CO
4
SO2
26
NO2
Some pollutants may slightly affect very few hypersensitive individuals.
Advise
Only very few hypersensitive people should reduce outdoor activities.
Air Quality
Today
19 Apr
58
Good
Sat
20 Apr
63
Good
Sun
21 Apr
78
Good
Mon
22 Apr
94
Good
Tue
23 Apr
54
Good
Wed
24 Apr
80
Good
Thu
25 Apr
76
Good
Air quality in the last 12 months (Tongzhou)
|
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
|
||
|
2024/01
|
125
|
112
|
34
|
84
|
39
|
21
|
24
|
63
|
48
|
55
|
97
|
151
|
80
|
27
|
42
|
92
|
119
|
106
|
65
|
53
|
26
|
20
|
23
|
26
|
24
|
37
|
34
|
41
|
98
|
129
|
66
|
|
2023/12
|
36
|
60
|
75
|
104
|
139
|
114
|
254
|
174
|
106
|
56
|
41
|
85
|
116
|
75
|
36
|
22
|
32
|
91
|
53
|
20
|
26
|
36
|
42
|
50
|
78
|
66
|
47
|
63
|
162
|
190
|
28
|
|
2023/11
|
192
|
103
|
37
|
65
|
47
|
46
|
46
|
60
|
27
|
18
|
22
|
20
|
39
|
73
|
85
|
33
|
28
|
44
|
53
|
105
|
173
|
136
|
39
|
28
|
66
|
70
|
51
|
31
|
25
|
24
|
|
|
2023/10
|
36
|
66
|
58
|
29
|
27
|
46
|
78
|
55
|
24
|
34
|
64
|
101
|
69
|
28
|
36
|
52
|
70
|
35
|
23
|
24
|
45
|
62
|
154
|
184
|
129
|
42
|
73
|
118
|
177
|
166
|
119
|
|
2023/09
|
49
|
62
|
62
|
106
|
127
|
109
|
103
|
142
|
33
|
34
|
59
|
23
|
50
|
58
|
74
|
97
|
91
|
44
|
36
|
34
|
67
|
41
|
46
|
55
|
56
|
89
|
72
|
36
|
60
|
30
|
|
|
2023/08
|
33
|
33
|
61
|
56
|
43
|
33
|
49
|
60
|
90
|
74
|
70
|
28
|
31
|
55
|
56
|
75
|
69
|
56
|
92
|
67
|
43
|
31
|
42
|
28
|
38
|
38
|
50
|
38
|
32
|
47
|
56
|
|
2023/07
|
84
|
97
|
62
|
40
|
58
|
71
|
50
|
37
|
36
|
75
|
61
|
38
|
28
|
41
|
29
|
34
|
74
|
78
|
78
|
80
|
52
|
34
|
47
|
74
|
56
|
65
|
65
|
34
|
37
|
17
|
24
|
|
2023/06
|
70
|
38
|
47
|
43
|
74
|
40
|
62
|
46
|
38
|
33
|
39
|
49
|
37
|
86
|
99
|
100
|
106
|
95
|
76
|
56
|
51
|
85
|
93
|
99
|
74
|
51
|
75
|
57
|
57
|
92
|
|
|
2023/05
|
79
|
83
|
88
|
52
|
30
|
36
|
48
|
60
|
65
|
66
|
88
|
68
|
42
|
85
|
111
|
91
|
54
|
53
|
84
|
148
|
120
|
50
|
54
|
77
|
66
|
92
|
97
|
55
|
74
|
58
|
70
|
|
2023/04
|
85
|
101
|
77
|
45
|
43
|
53
|
35
|
48
|
104
|
182
|
325
|
368
|
488
|
206
|
85
|
56
|
83
|
72
|
86
|
80
|
49
|
27
|
60
|
59
|
66
|
55
|
93
|
64
|
45
|
52
|
|
|
2023/03
|
30
|
64
|
76
|
192
|
206
|
179
|
240
|
124
|
82
|
241
|
126
|
55
|
83
|
153
|
125
|
60
|
81
|
49
|
98
|
157
|
155
|
354
|
129
|
73
|
70
|
63
|
67
|
104
|
130
|
122
|
82
|
|
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