Air Quality
Heavy
Healthy people will commonly show symptoms. People with respiratory or heart diseases will be significantly affected and will experience reduced endurance in activities.
167
*
PM2.5
217
PM10
20
O3
1.4
CO
2
SO2
44
NO2
Healthy people will commonly show symptoms. People with respiratory or heart diseases will be significantly affected and will experience reduced endurance in activities.
Advise
Children, seniors and individuals with heart or lung diseases should stay indoors and avoid outdoor activities. General population should reduce outdoor activities.
Air Quality
Today
18 Dec
173
Moderate
Fri
19 Dec
205
Heavy
Sat
20 Dec
126
Light
Sun
21 Dec
74
Good
Mon
22 Dec
121
Light
Tue
23 Dec
114
Light
Wed
24 Dec
29
Excellent
Air quality in the last 12 months (Zhengding)
|
2025/11
|
52
|
42
|
66
|
105
|
166
|
219
|
75
|
69
|
63
|
74
|
98
|
119
|
61
|
64
|
72
|
64
|
37
|
42
|
47
|
56
|
53
|
58
|
82
|
112
|
45
|
131
|
55
|
92
|
125
|
147
|
|
|
2025/10
|
64
|
34
|
56
|
60
|
41
|
24
|
32
|
27
|
15
|
16
|
26
|
49
|
38
|
38
|
72
|
106
|
45
|
30
|
50
|
36
|
50
|
60
|
88
|
108
|
151
|
72
|
65
|
93
|
182
|
204
|
161
|
|
2025/09
|
49
|
53
|
41
|
40
|
40
|
47
|
57
|
57
|
41
|
49
|
50
|
42
|
48
|
59
|
69
|
45
|
29
|
39
|
27
|
44
|
60
|
23
|
33
|
45
|
54
|
57
|
40
|
51
|
59
|
61
|
|
|
2025/08
|
48
|
56
|
57
|
32
|
32
|
44
|
45
|
32
|
26
|
36
|
47
|
52
|
33
|
50
|
62
|
24
|
33
|
50
|
52
|
21
|
34
|
35
|
26
|
17
|
38
|
45
|
51
|
27
|
41
|
37
|
43
|
|
2025/07
|
38
|
36
|
21
|
41
|
28
|
32
|
36
|
45
|
45
|
47
|
55
|
59
|
42
|
52
|
63
|
61
|
47
|
43
|
48
|
34
|
34
|
44
|
32
|
35
|
39
|
47
|
40
|
46
|
19
|
31
|
43
|
|
2025/06
|
92
|
81
|
43
|
39
|
62
|
69
|
69
|
62
|
71
|
49
|
76
|
78
|
78
|
49
|
32
|
29
|
41
|
66
|
51
|
60
|
51
|
47
|
52
|
51
|
56
|
48
|
51
|
42
|
42
|
55
|
|
|
2025/05
|
53
|
72
|
47
|
63
|
85
|
53
|
72
|
91
|
34
|
38
|
50
|
62
|
77
|
53
|
51
|
65
|
124
|
66
|
84
|
92
|
81
|
69
|
68
|
44
|
54
|
61
|
67
|
62
|
67
|
69
|
69
|
|
2025/04
|
69
|
40
|
67
|
105
|
51
|
81
|
111
|
73
|
78
|
70
|
145
|
125
|
49
|
41
|
56
|
109
|
131
|
73
|
54
|
91
|
81
|
59
|
75
|
54
|
72
|
95
|
96
|
58
|
62
|
71
|
|
|
2025/03
|
208
|
98
|
57
|
46
|
67
|
52
|
78
|
116
|
101
|
123
|
157
|
152
|
131
|
86
|
51
|
31
|
51
|
54
|
49
|
43
|
48
|
60
|
130
|
115
|
106
|
79
|
127
|
133
|
47
|
62
|
64
|
|
2025/02
|
103
|
167
|
53
|
37
|
32
|
109
|
34
|
26
|
53
|
88
|
117
|
84
|
53
|
78
|
64
|
42
|
50
|
58
|
60
|
76
|
81
|
67
|
39
|
60
|
72
|
74
|
104
|
150
|
|||
|
2025/01
|
78
|
69
|
67
|
74
|
75
|
32
|
40
|
50
|
42
|
45
|
63
|
61
|
73
|
70
|
46
|
58
|
85
|
112
|
78
|
97
|
95
|
80
|
90
|
101
|
145
|
86
|
31
|
59
|
247
|
104
|
95
|
|
2024/12
|
56
|
42
|
64
|
87
|
50
|
49
|
29
|
35
|
63
|
81
|
76
|
83
|
71
|
51
|
46
|
53
|
51
|
44
|
58
|
62
|
31
|
47
|
54
|
83
|
102
|
67
|
55
|
46
|
61
|
77
|
80
|
|
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