Air Quality
Excellent
No health implications.
PM2.5
PM10
O3
CO
SO2
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
17 Jun
Wed
18 Jun
Thu
19 Jun
Fri
20 Jun
Sat
21 Jun
Sun
22 Jun
Mon
23 Jun
Real-time AQI (Monitoring Station in Langfang)
开发区
4117
PM2.5
30
PM10
129
O3
0.3
CO
2
SO2
16
NO2
北华航天学院
4918
PM2.5
49
PM10
119
O3
0.3
CO
3
SO2
20
NO2
河北工业大学
4115
PM2.5
39
PM10
129
O3
0.3
CO
4
SO2
18
NO2
Air quality in the last 12 months (Langfang)
|
2025/05
|
40
|
53
|
31
|
54
|
62
|
32
|
89
|
92
|
37
|
41
|
65
|
77
|
72
|
43
|
50
|
81
|
72
|
51
|
84
|
119
|
78
|
66
|
61
|
47
|
58
|
70
|
68
|
70
|
74
|
78
|
76
|
|
2025/04
|
61
|
29
|
66
|
99
|
30
|
73
|
67
|
49
|
51
|
92
|
117
|
149
|
65
|
48
|
57
|
94
|
75
|
61
|
53
|
74
|
95
|
47
|
69
|
40
|
55
|
87
|
62
|
67
|
61
|
65
|
|
|
2025/03
|
231
|
73
|
32
|
53
|
89
|
30
|
84
|
123
|
152
|
136
|
168
|
96
|
106
|
79
|
45
|
25
|
37
|
28
|
46
|
40
|
34
|
54
|
104
|
83
|
51
|
83
|
57
|
35
|
21
|
43
|
72
|
|
2025/02
|
67
|
60
|
17
|
24
|
22
|
64
|
28
|
15
|
26
|
129
|
150
|
53
|
83
|
97
|
124
|
30
|
19
|
56
|
34
|
43
|
21
|
19
|
21
|
54
|
62
|
62
|
144
|
195
|
|||
|
2025/01
|
88
|
37
|
42
|
91
|
92
|
20
|
24
|
23
|
18
|
29
|
33
|
34
|
87
|
44
|
27
|
51
|
77
|
136
|
54
|
101
|
88
|
60
|
75
|
127
|
140
|
121
|
30
|
38
|
219
|
78
|
83
|
|
2024/12
|
118
|
26
|
52
|
59
|
56
|
31
|
20
|
31
|
56
|
46
|
51
|
97
|
47
|
35
|
43
|
43
|
24
|
21
|
61
|
59
|
23
|
26
|
41
|
92
|
106
|
29
|
31
|
46
|
99
|
76
|
57
|
|
2024/11
|
124
|
94
|
70
|
31
|
51
|
71
|
130
|
138
|
113
|
111
|
76
|
126
|
80
|
50
|
75
|
66
|
40
|
55
|
62
|
90
|
43
|
40
|
50
|
117
|
72
|
23
|
21
|
25
|
46
|
65
|
|
|
2024/10
|
21
|
20
|
45
|
72
|
90
|
103
|
32
|
40
|
122
|
44
|
78
|
125
|
129
|
152
|
73
|
54
|
63
|
56
|
26
|
40
|
62
|
40
|
64
|
127
|
148
|
207
|
72
|
76
|
118
|
131
|
135
|
|
2024/09
|
30
|
19
|
43
|
57
|
35
|
37
|
38
|
46
|
63
|
30
|
33
|
33
|
46
|
33
|
32
|
58
|
51
|
50
|
56
|
35
|
14
|
23
|
46
|
73
|
53
|
51
|
48
|
72
|
66
|
15
|
|
|
2024/08
|
31
|
49
|
44
|
34
|
23
|
45
|
46
|
44
|
50
|
59
|
47
|
23
|
19
|
31
|
56
|
47
|
50
|
29
|
34
|
28
|
26
|
34
|
46
|
34
|
47
|
23
|
29
|
40
|
50
|
61
|
55
|
|
2024/07
|
39
|
46
|
47
|
62
|
76
|
35
|
59
|
36
|
62
|
65
|
72
|
64
|
59
|
82
|
59
|
49
|
37
|
40
|
54
|
39
|
48
|
35
|
63
|
50
|
23
|
29
|
36
|
33
|
42
|
23
|
37
|
|
2024/06
|
44
|
57
|
56
|
60
|
68
|
79
|
54
|
51
|
82
|
84
|
78
|
66
|
81
|
47
|
45
|
60
|
59
|
62
|
68
|
62
|
57
|
114
|
78
|
47
|
51
|
73
|
62
|
65
|
66
|
47
|
|
|
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
*: primary pollution