Air Quality
Excellent
No health implications.
13
PM2.5
15
PM10
91
O3
0.5
CO
4
SO2
8
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
5 Sep
64
Good
Sun
6 Sep
49
Excellent
Mon
7 Sep
55
Good
Tue
8 Sep
51
Good
Wed
9 Sep
52
Good
Thu
10 Sep
50
Excellent
Fri
11 Sep
20
Excellent
Air quality in the last 12 months (Chengmai)
|
2026/08
|
14
|
13
|
15
|
16
|
13
|
13
|
15
|
20
|
27
|
30
|
37
|
22
|
21
|
26
|
22
|
21
|
23
|
26
|
20
|
17
|
15
|
15
|
16
|
19
|
16
|
20
|
24
|
23
|
20
|
20
|
20
|
|
2026/07
|
17
|
16
|
15
|
15
|
20
|
15
|
14
|
15
|
24
|
17
|
21
|
18
|
21
|
21
|
22
|
22
|
22
|
25
|
36
|
39
|
36
|
36
|
29
|
33
|
32
|
25
|
24
|
18
|
16
|
14
|
13
|
|
2026/06
|
24
|
26
|
27
|
27
|
24
|
22
|
22
|
22
|
23
|
27
|
32
|
24
|
21
|
21
|
25
|
25
|
25
|
24
|
21
|
23
|
22
|
23
|
23
|
26
|
27
|
26
|
24
|
20
|
21
|
18
|
|
|
2026/05
|
31
|
25
|
28
|
23
|
28
|
23
|
20
|
20
|
17
|
22
|
24
|
22
|
25
|
28
|
26
|
19
|
18
|
18
|
18
|
17
|
19
|
18
|
21
|
23
|
23
|
27
|
25
|
25
|
28
|
28
|
20
|
|
2026/04
|
42
|
39
|
38
|
39
|
52
|
52
|
53
|
49
|
35
|
38
|
50
|
49
|
44
|
42
|
40
|
36
|
31
|
26
|
34
|
32
|
30
|
33
|
52
|
30
|
26
|
29
|
20
|
26
|
29
|
25
|
|
|
2026/03
|
15
|
23
|
25
|
12
|
19
|
29
|
32
|
35
|
30
|
24
|
31
|
35
|
40
|
42
|
38
|
35
|
28
|
26
|
26
|
23
|
24
|
27
|
30
|
28
|
26
|
27
|
32
|
37
|
34
|
28
|
35
|
|
2026/02
|
29
|
31
|
28
|
33
|
30
|
22
|
21
|
36
|
35
|
32
|
28
|
23
|
31
|
29
|
27
|
27
|
32
|
39
|
35
|
35
|
37
|
27
|
25
|
28
|
37
|
31
|
35
|
17
|
|||
|
2026/01
|
32
|
43
|
33
|
38
|
44
|
54
|
45
|
39
|
43
|
42
|
44
|
44
|
55
|
49
|
37
|
37
|
38
|
44
|
32
|
37
|
48
|
50
|
44
|
39
|
20
|
25
|
30
|
43
|
30
|
27
|
30
|
|
2025/12
|
41
|
23
|
33
|
54
|
43
|
54
|
40
|
60
|
51
|
43
|
48
|
34
|
35
|
27
|
50
|
40
|
46
|
47
|
44
|
36
|
32
|
40
|
34
|
32
|
32
|
36
|
39
|
39
|
40
|
36
|
46
|
|
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
|
|
|
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