Air Quality
Excellent
No health implications.
21
PM2.5
26
PM10
37
O3
0.7
CO
5
SO2
8
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
4 May
56
Good
Mon
5 May
41
Excellent
Tue
6 May
63
Good
Wed
7 May
60
Good
Thu
8 May
59
Good
Fri
9 May
58
Good
Sat
10 May
16
Excellent
Air quality in the last 12 months (Lechang)
|
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
|
|
2024/06
|
16
|
12
|
34
|
20
|
11
|
22
|
36
|
41
|
31
|
21
|
19
|
23
|
23
|
18
|
12
|
13
|
20
|
13
|
22
|
26
|
20
|
31
|
20
|
16
|
22
|
32
|
28
|
19
|
20
|
21
|
|
|
2024/05
|
11
|
24
|
27
|
24
|
15
|
29
|
35
|
45
|
58
|
58
|
40
|
29
|
53
|
52
|
46
|
52
|
60
|
40
|
21
|
18
|
27
|
26
|
25
|
23
|
18
|
23
|
17
|
28
|
26
|
35
|
28
|
|
2024/04
|
48
|
52
|
39
|
27
|
9
|
12
|
12
|
19
|
34
|
41
|
57
|
68
|
62
|
50
|
58
|
53
|
34
|
33
|
21
|
14
|
15
|
34
|
39
|
35
|
29
|
22
|
28
|
27
|
24
|
21
|
|
|
2024/03
|
58
|
40
|
41
|
14
|
34
|
67
|
67
|
53
|
48
|
33
|
22
|
38
|
53
|
37
|
32
|
37
|
55
|
44
|
23
|
65
|
68
|
50
|
40
|
37
|
30
|
24
|
42
|
29
|
33
|
44
|
41
|
|
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