Air Quality
Excellent
No health implications.
7
PM2.5
21
PM10
89
O3
0.4
CO
5
SO2
11
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
17 Oct
85
Good
Sun
18 Oct
75
Good
Mon
19 Oct
69
Good
Tue
20 Oct
79
Good
Wed
21 Oct
66
Good
Thu
22 Oct
65
Good
Fri
23 Oct
17
Excellent
Air quality in the last 12 months (Helan)
|
2026/08
|
36
|
39
|
38
|
49
|
44
|
27
|
26
|
31
|
36
|
35
|
29
|
31
|
31
|
39
|
49
|
33
|
36
|
39
|
48
|
47
|
38
|
37
|
33
|
37
|
33
|
27
|
31
|
27
|
36
|
38
|
53
|
|
2026/07
|
37
|
51
|
46
|
56
|
48
|
39
|
43
|
42
|
56
|
32
|
28
|
37
|
46
|
38
|
52
|
39
|
47
|
53
|
52
|
55
|
48
|
49
|
64
|
48
|
46
|
36
|
31
|
24
|
27
|
104
|
38
|
|
2026/06
|
54
|
55
|
47
|
40
|
43
|
34
|
28
|
37
|
30
|
39
|
35
|
42
|
40
|
38
|
43
|
52
|
41
|
37
|
37
|
32
|
36
|
34
|
36
|
43
|
30
|
41
|
56
|
68
|
52
|
41
|
|
|
2026/05
|
61
|
33
|
35
|
45
|
49
|
69
|
41
|
46
|
54
|
63
|
60
|
73
|
45
|
122
|
108
|
43
|
33
|
46
|
45
|
46
|
170
|
78
|
61
|
36
|
41
|
106
|
70
|
41
|
44
|
50
|
91
|
|
2026/04
|
48
|
51
|
178
|
68
|
117
|
58
|
58
|
47
|
65
|
50
|
55
|
127
|
74
|
67
|
61
|
55
|
54
|
96
|
248
|
87
|
63
|
57
|
80
|
68
|
56
|
55
|
163
|
41
|
38
|
63
|
|
|
2026/03
|
66
|
70
|
99
|
80
|
58
|
37
|
56
|
64
|
49
|
65
|
48
|
235
|
435
|
60
|
89
|
84
|
77
|
67
|
61
|
113
|
111
|
69
|
50
|
66
|
71
|
68
|
63
|
37
|
52
|
48
|
54
|
|
2026/02
|
87
|
66
|
80
|
74
|
59
|
51
|
39
|
60
|
86
|
75
|
81
|
88
|
85
|
95
|
32
|
34
|
72
|
52
|
52
|
143
|
280
|
328
|
130
|
103
|
104
|
56
|
76
|
89
|
|||
|
2026/01
|
73
|
99
|
72
|
78
|
44
|
42
|
55
|
57
|
94
|
37
|
44
|
115
|
66
|
194
|
80
|
74
|
96
|
83
|
24
|
41
|
57
|
78
|
100
|
79
|
252
|
125
|
119
|
104
|
73
|
97
|
120
|
|
2025/12
|
52
|
38
|
60
|
80
|
61
|
39
|
41
|
63
|
124
|
100
|
60
|
61
|
178
|
92
|
137
|
126
|
79
|
101
|
72
|
51
|
49
|
71
|
96
|
80
|
53
|
69
|
59
|
66
|
56
|
38
|
29
|
|
2025/11
|
57
|
56
|
79
|
80
|
51
|
59
|
46
|
79
|
88
|
75
|
69
|
59
|
60
|
61
|
95
|
51
|
20
|
38
|
53
|
66
|
77
|
73
|
97
|
91
|
66
|
168
|
79
|
90
|
99
|
60
|
|
|
2025/10
|
49
|
27
|
31
|
80
|
50
|
43
|
51
|
30
|
37
|
41
|
42
|
54
|
43
|
44
|
57
|
45
|
45
|
44
|
31
|
44
|
62
|
53
|
64
|
54
|
60
|
36
|
66
|
68
|
74
|
60
|
51
|
|
2025/09
|
37
|
86
|
60
|
37
|
71
|
69
|
57
|
56
|
50
|
38
|
30
|
41
|
55
|
67
|
58
|
30
|
21
|
28
|
32
|
26
|
22
|
34
|
27
|
47
|
41
|
46
|
53
|
44
|
55
|
53
|
|
|
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