Air Quality
Light
Healthy people may experience slight irritations and sensitive individuals will be slightly affected to a larger extent.
101
*
PM2.5
135
PM10
19
O3
1.1
CO
8
SO2
44
NO2
Healthy people may experience slight irritations and sensitive individuals will be slightly affected to a larger extent.
Advise
Children, seniors and individuals with respiratory or heart diseases should reduce sustained and high-intensity outdoor exercises.
Air Quality
Today
18 Dec
181
Moderate
Fri
19 Dec
195
Moderate
Sat
20 Dec
105
Light
Sun
21 Dec
69
Good
Mon
22 Dec
104
Light
Tue
23 Dec
29
Excellent
Wed
24 Dec
39
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