Air Quality
Light
Healthy people may experience slight irritations and sensitive individuals will be slightly affected to a larger extent.
113
*
PM2.5
131
PM10
112
O3
0.6
CO
7
SO2
18
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
17 Mar
126
Light
Wed
18 Mar
80
Good
Thu
19 Mar
94
Good
Fri
20 Mar
111
Light
Sat
21 Mar
104
Light
Sun
22 Mar
97
Good
Mon
23 Mar
44
Excellent
Air quality in the last 12 months (Hejian)
|
2026/02
|
213
|
97
|
143
|
176
|
132
|
51
|
60
|
68
|
105
|
143
|
114
|
121
|
152
|
149
|
42
|
77
|
175
|
65
|
90
|
74
|
234
|
76
|
53
|
82
|
69
|
79
|
58
|
63
|
|||
|
2026/01
|
56
|
76
|
143
|
207
|
171
|
166
|
51
|
67
|
130
|
52
|
40
|
79
|
67
|
82
|
140
|
85
|
54
|
48
|
39
|
43
|
63
|
113
|
127
|
204
|
117
|
97
|
138
|
126
|
68
|
84
|
132
|
|
2025/12
|
63
|
34
|
49
|
58
|
77
|
132
|
99
|
38
|
102
|
146
|
91
|
34
|
61
|
68
|
125
|
122
|
120
|
151
|
249
|
92
|
50
|
71
|
82
|
66
|
32
|
57
|
102
|
174
|
133
|
73
|
30
|
|
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
|
|
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