Air Quality
Moderate
Sensitive individuals will experience more serious conditions. The hearts and respiratory systems of healthy people may be affected.
116
*
PM2.5
155
PM10
30
O3
1.3
CO
5
SO2
52
NO2
Sensitive individuals will experience more serious conditions. The hearts and respiratory systems of healthy people may be affected.
Advise
Children, seniors and individuals with respiratory or heart diseases should avoid sustained and high-intensity outdoor exercises. General population should moderately reduce outdoor activities.
Air Quality
Today
17 Dec
132
Light
Thu
18 Dec
180
Moderate
Fri
19 Dec
194
Moderate
Sat
20 Dec
101
Light
Sun
21 Dec
71
Good
Mon
22 Dec
104
Light
Tue
23 Dec
29
Excellent
Hejian Air quality rank
Air quality in the last 12 months (Hejian)
|
2025/11
|
81
|
33
|
64
|
112
|
176
|
170
|
55
|
69
|
71
|
83
|
132
|
165
|
72
|
77
|
130
|
94
|
38
|
50
|
60
|
58
|
67
|
91
|
105
|
152
|
38
|
121
|
44
|
120
|
144
|
164
|
|
|
2025/10
|
89
|
43
|
54
|
56
|
32
|
28
|
50
|
33
|
10
|
17
|
21
|
44
|
38
|
50
|
86
|
69
|
41
|
24
|
33
|
34
|
50
|
63
|
68
|
87
|
114
|
76
|
70
|
155
|
140
|
174
|
100
|
|
2025/09
|
39
|
42
|
48
|
52
|
52
|
46
|
62
|
65
|
48
|
54
|
59
|
51
|
60
|
66
|
60
|
43
|
32
|
41
|
31
|
44
|
63
|
36
|
50
|
54
|
69
|
59
|
42
|
59
|
72
|
80
|
|
|
2025/08
|
43
|
37
|
49
|
28
|
45
|
38
|
38
|
35
|
26
|
36
|
41
|
40
|
31
|
53
|
39
|
12
|
25
|
26
|
35
|
20
|
29
|
25
|
32
|
15
|
33
|
42
|
41
|
19
|
39
|
29
|
30
|
|
2025/07
|
22
|
27
|
18
|
31
|
29
|
24
|
35
|
35
|
45
|
48
|
56
|
55
|
42
|
44
|
44
|
37
|
42
|
45
|
50
|
37
|
38
|
45
|
27
|
27
|
37
|
43
|
37
|
39
|
22
|
31
|
30
|
|
2025/06
|
86
|
78
|
43
|
40
|
63
|
79
|
74
|
64
|
74
|
45
|
71
|
86
|
79
|
51
|
36
|
32
|
57
|
72
|
46
|
41
|
49
|
50
|
65
|
56
|
70
|
64
|
58
|
58
|
50
|
36
|
|
|
2025/05
|
55
|
70
|
44
|
53
|
63
|
43
|
77
|
79
|
42
|
37
|
58
|
69
|
72
|
58
|
41
|
83
|
104
|
68
|
100
|
102
|
79
|
72
|
71
|
57
|
59
|
73
|
68
|
69
|
72
|
70
|
66
|
|
2025/04
|
72
|
34
|
61
|
96
|
44
|
79
|
91
|
74
|
57
|
77
|
141
|
172
|
57
|
50
|
60
|
91
|
101
|
60
|
45
|
71
|
78
|
61
|
78
|
57
|
70
|
90
|
85
|
68
|
70
|
84
|
|
|
2025/03
|
217
|
87
|
54
|
48
|
75
|
50
|
94
|
118
|
111
|
113
|
138
|
143
|
133
|
79
|
51
|
35
|
55
|
36
|
53
|
55
|
56
|
70
|
124
|
116
|
67
|
93
|
95
|
53
|
34
|
63
|
74
|
|
2025/02
|
71
|
96
|
36
|
30
|
38
|
90
|
34
|
28
|
60
|
110
|
141
|
99
|
78
|
99
|
107
|
51
|
41
|
59
|
70
|
69
|
64
|
53
|
39
|
67
|
85
|
84
|
150
|
198
|
|||
|
2025/01
|
116
|
46
|
66
|
126
|
123
|
38
|
51
|
44
|
36
|
62
|
79
|
70
|
87
|
92
|
44
|
66
|
81
|
135
|
115
|
94
|
119
|
56
|
65
|
84
|
107
|
107
|
28
|
79
|
287
|
77
|
71
|
|
2024/12
|
112
|
39
|
61
|
91
|
79
|
61
|
34
|
56
|
97
|
96
|
62
|
89
|
72
|
56
|
58
|
73
|
55
|
34
|
61
|
82
|
37
|
54
|
77
|
114
|
144
|
49
|
58
|
58
|
83
|
112
|
85
|
|
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