Air Quality
Moderate
Sensitive individuals will experience more serious conditions. The hearts and respiratory systems of healthy people may be affected.
73
PM2.5
271
*
PM10
113
O3
0.6
CO
14
SO2
13
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
21 Feb
94
Good
Sun
22 Feb
96
Good
Mon
23 Feb
77
Good
Tue
24 Feb
109
Light
Wed
25 Feb
116
Light
Thu
26 Feb
133
Light
Fri
27 Feb
47
Excellent
Hejian Air quality rank
Air quality in the last 12 months (Hejian)
|
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
|
|
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
|
|||
|
1
|
2
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3
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4
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5
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6
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7
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8
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9
|
10
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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