Air Quality
Excellent
No health implications.
15
PM2.5
27
PM10
43
O3
0.5
CO
11
SO2
14
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
31 Jul
55
Good
Fri
1 Aug
56
Good
Sat
2 Aug
54
Good
Sun
3 Aug
53
Good
Mon
4 Aug
52
Good
Tue
5 Aug
47
Excellent
Wed
6 Aug
48
Excellent
Air quality in the last 12 months (Lechang)
|
2025/06
|
24
|
21
|
23
|
36
|
38
|
36
|
32
|
25
|
31
|
34
|
25
|
23
|
29
|
15
|
13
|
30
|
9
|
9
|
15
|
16
|
18
|
21
|
23
|
31
|
34
|
24
|
19
|
16
|
22
|
21
|
|
|
2025/05
|
57
|
54
|
45
|
35
|
22
|
31
|
44
|
30
|
21
|
47
|
38
|
45
|
47
|
49
|
39
|
33
|
18
|
13
|
17
|
20
|
23
|
23
|
24
|
36
|
59
|
52
|
51
|
43
|
14
|
26
|
23
|
|
2025/04
|
43
|
51
|
55
|
69
|
78
|
72
|
67
|
73
|
86
|
38
|
53
|
118
|
210
|
131
|
88
|
79
|
85
|
68
|
29
|
27
|
35
|
34
|
35
|
25
|
19
|
29
|
31
|
25
|
52
|
58
|
|
|
2025/03
|
36
|
34
|
35
|
15
|
14
|
16
|
41
|
45
|
48
|
66
|
60
|
52
|
40
|
36
|
11
|
26
|
49
|
36
|
46
|
50
|
53
|
58
|
70
|
83
|
87
|
67
|
50
|
58
|
20
|
11
|
22
|
|
2025/02
|
47
|
15
|
17
|
41
|
57
|
55
|
32
|
61
|
35
|
48
|
60
|
65
|
66
|
81
|
98
|
50
|
33
|
35
|
47
|
39
|
22
|
27
|
12
|
46
|
71
|
87
|
81
|
55
|
|||
|
2025/01
|
90
|
83
|
95
|
105
|
141
|
121
|
94
|
93
|
75
|
39
|
44
|
52
|
58
|
54
|
76
|
61
|
58
|
57
|
66
|
67
|
69
|
78
|
75
|
124
|
77
|
18
|
37
|
55
|
136
|
92
|
81
|
|
2024/12
|
59
|
62
|
61
|
91
|
94
|
51
|
27
|
44
|
89
|
83
|
37
|
45
|
64
|
74
|
50
|
49
|
55
|
55
|
73
|
75
|
76
|
84
|
85
|
85
|
89
|
108
|
118
|
116
|
80
|
85
|
90
|
|
2024/11
|
53
|
64
|
65
|
67
|
59
|
62
|
44
|
54
|
56
|
74
|
60
|
54
|
62
|
68
|
32
|
38
|
30
|
10
|
13
|
29
|
33
|
42
|
41
|
48
|
56
|
20
|
37
|
48
|
48
|
60
|
|
|
2024/10
|
31
|
32
|
42
|
46
|
45
|
53
|
81
|
71
|
51
|
41
|
52
|
57
|
58
|
87
|
61
|
31
|
45
|
48
|
31
|
19
|
28
|
28
|
23
|
35
|
44
|
60
|
28
|
21
|
45
|
53
|
51
|
|
2024/09
|
31
|
31
|
31
|
32
|
37
|
23
|
14
|
19
|
18
|
28
|
33
|
48
|
47
|
40
|
22
|
28
|
41
|
40
|
44
|
35
|
23
|
21
|
34
|
33
|
31
|
37
|
42
|
38
|
44
|
34
|
|
|
2024/08
|
18
|
23
|
30
|
38
|
42
|
29
|
34
|
36
|
32
|
33
|
31
|
20
|
16
|
22
|
20
|
21
|
22
|
21
|
22
|
30
|
17
|
25
|
25
|
33
|
31
|
29
|
35
|
34
|
35
|
48
|
43
|
|
2024/07
|
23
|
21
|
18
|
24
|
24
|
24
|
21
|
18
|
22
|
21
|
21
|
19
|
20
|
25
|
24
|
15
|
18
|
21
|
24
|
22
|
20
|
23
|
21
|
34
|
49
|
36
|
15
|
12
|
11
|
19
|
16
|
|
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