Air Quality
Excellent
No health implications.
6
PM2.5
18
PM10
95
O3
0.2
CO
6
SO2
6
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
3 May
102
Light
Sun
4 May
127
Light
Mon
5 May
116
Light
Tue
6 May
116
Light
Wed
7 May
115
Light
Thu
8 May
111
Light
Fri
9 May
29
Excellent
Air quality in the last 12 months (Yanqi)
|
2025/02
|
70
|
78
|
74
|
62
|
57
|
213
|
152
|
186
|
159
|
113
|
238
|
309
|
171
|
170
|
161
|
144
|
126
|
105
|
125
|
109
|
89
|
68
|
76
|
224
|
232
|
187
|
169
|
119
|
|||
|
2025/01
|
83
|
70
|
67
|
74
|
69
|
65
|
57
|
58
|
57
|
44
|
34
|
31
|
52
|
49
|
45
|
62
|
71
|
64
|
65
|
70
|
75
|
73
|
65
|
52
|
136
|
410
|
274
|
280
|
167
|
153
|
116
|
|
2024/12
|
76
|
77
|
62
|
65
|
54
|
54
|
61
|
58
|
54
|
24
|
31
|
34
|
28
|
33
|
39
|
44
|
45
|
50
|
49
|
52
|
51
|
56
|
67
|
69
|
66
|
55
|
57
|
95
|
89
|
73
|
69
|
|
2024/11
|
70
|
76
|
78
|
77
|
105
|
93
|
83
|
59
|
48
|
64
|
70
|
70
|
82
|
54
|
36
|
52
|
66
|
66
|
77
|
70
|
60
|
69
|
62
|
50
|
41
|
41
|
50
|
89
|
78
|
78
|
|
|
2024/10
|
86
|
76
|
74
|
45
|
42
|
60
|
74
|
78
|
71
|
81
|
100
|
96
|
74
|
63
|
75
|
79
|
58
|
49
|
37
|
45
|
42
|
69
|
99
|
100
|
72
|
83
|
79
|
82
|
50
|
34
|
47
|
|
2024/09
|
89
|
56
|
17
|
25
|
118
|
101
|
96
|
51
|
99
|
51
|
52
|
81
|
74
|
72
|
45
|
70
|
85
|
77
|
61
|
66
|
75
|
90
|
49
|
31
|
34
|
68
|
36
|
47
|
46
|
39
|
|
|
2024/08
|
43
|
59
|
56
|
44
|
42
|
63
|
18
|
19
|
48
|
58
|
32
|
27
|
35
|
30
|
57
|
47
|
61
|
67
|
54
|
54
|
76
|
54
|
48
|
58
|
83
|
50
|
59
|
47
|
52
|
45
|
33
|
|
2024/07
|
48
|
37
|
22
|
37
|
41
|
56
|
30
|
45
|
44
|
29
|
49
|
50
|
29
|
29
|
30
|
54
|
48
|
45
|
66
|
73
|
80
|
58
|
67
|
64
|
66
|
47
|
38
|
43
|
49
|
45
|
60
|
|
2024/06
|
28
|
57
|
72
|
35
|
34
|
60
|
66
|
56
|
37
|
61
|
52
|
39
|
34
|
33
|
45
|
30
|
35
|
83
|
128
|
53
|
60
|
47
|
45
|
49
|
43
|
52
|
55
|
51
|
51
|
52
|
|
|
2024/05
|
93
|
125
|
62
|
75
|
87
|
79
|
74
|
81
|
66
|
70
|
63
|
72
|
72
|
65
|
156
|
309
|
162
|
153
|
115
|
80
|
86
|
75
|
56
|
53
|
47
|
33
|
39
|
114
|
67
|
46
|
30
|
|
2024/04
|
57
|
29
|
55
|
56
|
41
|
54
|
87
|
64
|
115
|
73
|
38
|
79
|
392
|
394
|
250
|
132
|
100
|
53
|
34
|
70
|
85
|
56
|
69
|
56
|
60
|
51
|
89
|
103
|
57
|
54
|
|
|
2024/03
|
242
|
140
|
139
|
115
|
247
|
169
|
163
|
179
|
148
|
163
|
123
|
134
|
122
|
110
|
62
|
42
|
149
|
291
|
229
|
272
|
175
|
105
|
89
|
47
|
71
|
61
|
78
|
123
|
103
|
68
|
70
|
|
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