Air Quality
Excellent
No health implications.
11
PM2.5
19
PM10
28
O3
0.5
CO
4
SO2
14
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
27 Jul
72
Good
Mon
28 Jul
74
Good
Tue
29 Jul
74
Good
Wed
30 Jul
84
Good
Thu
31 Jul
83
Good
Fri
1 Aug
40
Excellent
Sat
2 Aug
37
Excellent
Air quality in the last 12 months (Lan County)
|
2025/06
|
48
|
25
|
30
|
28
|
44
|
46
|
54
|
48
|
50
|
37
|
53
|
62
|
41
|
35
|
20
|
24
|
36
|
44
|
34
|
31
|
30
|
44
|
46
|
49
|
51
|
41
|
42
|
32
|
30
|
45
|
|
|
2025/05
|
56
|
73
|
28
|
57
|
137
|
61
|
72
|
72
|
30
|
42
|
42
|
54
|
79
|
35
|
42
|
138
|
141
|
55
|
65
|
66
|
74
|
91
|
35
|
45
|
42
|
37
|
40
|
57
|
60
|
60
|
35
|
|
2025/04
|
53
|
41
|
87
|
116
|
48
|
71
|
85
|
72
|
63
|
49
|
199
|
104
|
59
|
25
|
49
|
147
|
201
|
78
|
61
|
78
|
85
|
71
|
63
|
42
|
58
|
63
|
42
|
38
|
60
|
106
|
|
|
2025/03
|
90
|
75
|
36
|
54
|
63
|
41
|
66
|
61
|
74
|
78
|
167
|
153
|
80
|
85
|
43
|
25
|
34
|
33
|
41
|
41
|
53
|
71
|
148
|
317
|
360
|
216
|
216
|
92
|
35
|
35
|
41
|
|
2025/02
|
81
|
55
|
25
|
36
|
32
|
107
|
36
|
35
|
46
|
63
|
69
|
60
|
49
|
58
|
68
|
59
|
54
|
64
|
55
|
61
|
66
|
47
|
33
|
50
|
52
|
67
|
71
|
63
|
|||
|
2025/01
|
64
|
54
|
51
|
64
|
72
|
41
|
36
|
39
|
39
|
51
|
61
|
45
|
83
|
44
|
49
|
55
|
62
|
57
|
57
|
51
|
65
|
89
|
118
|
147
|
100
|
80
|
26
|
46
|
158
|
107
|
119
|
|
2024/12
|
61
|
50
|
55
|
47
|
37
|
39
|
39
|
41
|
61
|
61
|
79
|
81
|
81
|
51
|
57
|
61
|
59
|
50
|
62
|
54
|
41
|
53
|
67
|
75
|
67
|
58
|
36
|
49
|
66
|
79
|
70
|
|
2024/11
|
43
|
70
|
55
|
34
|
48
|
62
|
89
|
103
|
112
|
109
|
93
|
79
|
60
|
58
|
62
|
70
|
51
|
58
|
63
|
55
|
57
|
65
|
89
|
109
|
48
|
52
|
67
|
41
|
40
|
60
|
|
|
2024/10
|
62
|
30
|
41
|
57
|
63
|
55
|
34
|
43
|
46
|
39
|
50
|
60
|
63
|
71
|
53
|
91
|
77
|
21
|
26
|
24
|
44
|
36
|
51
|
54
|
70
|
56
|
42
|
56
|
65
|
62
|
57
|
|
2024/09
|
35
|
24
|
42
|
50
|
22
|
46
|
32
|
55
|
51
|
25
|
29
|
39
|
45
|
32
|
44
|
53
|
58
|
51
|
44
|
34
|
23
|
37
|
51
|
59
|
58
|
48
|
70
|
68
|
32
|
24
|
|
|
2024/08
|
40
|
50
|
41
|
38
|
33
|
38
|
22
|
32
|
39
|
52
|
22
|
27
|
32
|
45
|
39
|
42
|
49
|
44
|
37
|
37
|
43
|
46
|
57
|
55
|
53
|
21
|
30
|
37
|
45
|
49
|
55
|
|
2024/07
|
49
|
39
|
52
|
43
|
46
|
37
|
42
|
51
|
47
|
46
|
56
|
46
|
56
|
54
|
55
|
31
|
36
|
42
|
47
|
44
|
61
|
74
|
63
|
36
|
35
|
46
|
52
|
51
|
53
|
29
|
34
|
|
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