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
29 Jul
Wed
30 Jul
Thu
31 Jul
Fri
1 Aug
Sat
2 Aug
Sun
3 Aug
Mon
4 Aug
Real-time AQI (Monitoring Station in Langfang)
开发区
253
PM2.5
11
PM10
79
O3
0.3
CO
1
SO2
8
NO2
北华航天学院
283
PM2.5
18
PM10
88
O3
0.3
CO
3
SO2
7
NO2
河北工业大学
293
PM2.5
25
PM10
90
O3
0.3
CO
4
SO2
9
NO2
Air quality in the last 12 months (Langfang)
|
2025/06
|
75
|
58
|
30
|
29
|
59
|
54
|
55
|
54
|
57
|
43
|
63
|
78
|
69
|
51
|
30
|
24
|
62
|
80
|
44
|
39
|
40
|
47
|
98
|
85
|
75
|
64
|
55
|
49
|
62
|
44
|
|
|
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
|
|
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