Air Quality
Excellent
No health implications.
26
PM2.5
39
PM10
72
O3
0.5
CO
6
SO2
13
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
12 Dec
60
Good
Sat
13 Dec
63
Good
Sun
14 Dec
59
Good
Mon
15 Dec
63
Good
Tue
16 Dec
61
Good
Wed
17 Dec
19
Excellent
Thu
18 Dec
26
Excellent
Air quality in the last 12 months (Chengmai)
|
2025/11
|
40
|
41
|
36
|
18
|
19
|
26
|
14
|
16
|
27
|
44
|
33
|
27
|
50
|
35
|
39
|
41
|
38
|
51
|
27
|
33
|
40
|
42
|
48
|
52
|
47
|
52
|
51
|
54
|
60
|
34
|
|
|
2025/10
|
15
|
14
|
12
|
15
|
16
|
13
|
17
|
16
|
20
|
24
|
22
|
15
|
9
|
11
|
15
|
21
|
23
|
30
|
33
|
31
|
22
|
20
|
22
|
25
|
39
|
42
|
35
|
36
|
36
|
20
|
41
|
|
2025/09
|
12
|
15
|
15
|
16
|
14
|
12
|
20
|
20
|
19
|
16
|
17
|
14
|
14
|
13
|
17
|
12
|
13
|
14
|
19
|
21
|
22
|
13
|
23
|
23
|
17
|
18
|
26
|
15
|
17
|
18
|
|
|
2025/08
|
28
|
31
|
33
|
30
|
26
|
31
|
28
|
24
|
25
|
23
|
18
|
20
|
19
|
18
|
16
|
12
|
15
|
8
|
15
|
21
|
20
|
15
|
14
|
18
|
14
|
15
|
14
|
16
|
15
|
15
|
14
|
|
2025/07
|
15
|
14
|
11
|
15
|
16
|
19
|
16
|
22
|
24
|
25
|
21
|
20
|
25
|
27
|
27
|
26
|
21
|
23
|
16
|
13
|
8
|
15
|
18
|
15
|
16
|
17
|
19
|
15
|
20
|
17
|
20
|
|
2025/06
|
20
|
20
|
27
|
27
|
15
|
16
|
20
|
23
|
20
|
23
|
18
|
13
|
10
|
11
|
16
|
17
|
21
|
17
|
15
|
16
|
17
|
13
|
14
|
14
|
11
|
10
|
13
|
15
|
16
|
16
|
|
|
2025/05
|
23
|
21
|
27
|
26
|
21
|
25
|
23
|
18
|
23
|
18
|
24
|
38
|
24
|
14
|
12
|
16
|
14
|
18
|
18
|
18
|
18
|
16
|
18
|
15
|
27
|
37
|
29
|
20
|
16
|
13
|
12
|
|
2025/04
|
21
|
33
|
30
|
32
|
34
|
20
|
35
|
33
|
39
|
37
|
35
|
36
|
145
|
166
|
133
|
106
|
84
|
51
|
37
|
30
|
25
|
29
|
27
|
31
|
32
|
24
|
18
|
27
|
28
|
26
|
|
|
2025/03
|
29
|
27
|
33
|
33
|
32
|
14
|
12
|
15
|
32
|
39
|
33
|
25
|
20
|
23
|
29
|
17
|
33
|
39
|
48
|
49
|
43
|
42
|
37
|
43
|
43
|
41
|
43
|
40
|
18
|
9
|
15
|
|
2025/02
|
30
|
19
|
30
|
25
|
26
|
35
|
42
|
32
|
53
|
42
|
30
|
19
|
28
|
23
|
18
|
22
|
32
|
45
|
43
|
33
|
36
|
22
|
22
|
27
|
23
|
31
|
35
|
28
|
|||
|
2025/01
|
66
|
48
|
60
|
50
|
58
|
71
|
46
|
52
|
62
|
65
|
49
|
45
|
42
|
33
|
41
|
56
|
58
|
49
|
51
|
56
|
42
|
52
|
43
|
38
|
28
|
30
|
30
|
32
|
47
|
44
|
41
|
|
2024/12
|
39
|
34
|
34
|
31
|
35
|
37
|
51
|
39
|
38
|
29
|
33
|
47
|
42
|
43
|
58
|
44
|
38
|
48
|
48
|
51
|
50
|
50
|
54
|
55
|
55
|
45
|
63
|
64
|
59
|
44
|
57
|
|
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