Air Quality
Excellent
No health implications.
8
PM2.5
12
PM10
60
O3
0.5
CO
5
SO2
9
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
1 May
46
Excellent
Fri
2 May
56
Good
Sat
3 May
53
Good
Sun
4 May
53
Good
Mon
5 May
40
Excellent
Tue
6 May
36
Excellent
Wed
7 May
32
Excellent
Air quality in the last 12 months (Chengmai)
|
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
|
|
2024/11
|
48
|
43
|
33
|
28
|
42
|
47
|
51
|
47
|
51
|
47
|
46
|
42
|
49
|
52
|
40
|
35
|
28
|
28
|
26
|
8
|
16
|
28
|
30
|
29
|
23
|
27
|
34
|
38
|
40
|
44
|
|
|
2024/10
|
30
|
31
|
42
|
47
|
39
|
41
|
29
|
54
|
63
|
54
|
38
|
31
|
29
|
19
|
16
|
11
|
11
|
15
|
18
|
26
|
29
|
35
|
30
|
34
|
38
|
45
|
22
|
28
|
17
|
30
|
42
|
|
2024/09
|
14
|
16
|
16
|
24
|
28
|
18
|
14
|
26
|
22
|
16
|
12
|
19
|
23
|
21
|
26
|
27
|
21
|
21
|
15
|
11
|
15
|
12
|
12
|
14
|
21
|
30
|
27
|
21
|
21
|
22
|
|
|
2024/08
|
20
|
21
|
18
|
20
|
21
|
22
|
22
|
23
|
22
|
25
|
24
|
24
|
21
|
21
|
21
|
20
|
16
|
16
|
22
|
19
|
19
|
19
|
19
|
21
|
17
|
20
|
17
|
20
|
24
|
22
|
15
|
|
2024/07
|
18
|
19
|
16
|
12
|
12
|
12
|
12
|
13
|
15
|
18
|
17
|
16
|
14
|
14
|
14
|
14
|
11
|
12
|
14
|
14
|
13
|
10
|
13
|
17
|
15
|
15
|
22
|
23
|
18
|
16
|
18
|
|
2024/06
|
18
|
22
|
18
|
20
|
21
|
21
|
19
|
22
|
20
|
18
|
20
|
20
|
21
|
22
|
24
|
27
|
23
|
23
|
23
|
21
|
19
|
12
|
11
|
12
|
17
|
11
|
11
|
16
|
14
|
20
|
|
|
2024/05
|
35
|
26
|
23
|
22
|
30
|
33
|
28
|
22
|
27
|
30
|
28
|
27
|
23
|
23
|
27
|
29
|
32
|
16
|
17
|
20
|
19
|
15
|
15
|
20
|
20
|
21
|
22
|
23
|
27
|
24
|
19
|
|
2024/04
|
40
|
35
|
35
|
37
|
34
|
33
|
38
|
42
|
32
|
25
|
32
|
32
|
38
|
39
|
40
|
35
|
27
|
32
|
35
|
35
|
30
|
31
|
35
|
39
|
31
|
43
|
52
|
44
|
39
|
41
|
|
|
2024/03
|
13
|
13
|
20
|
28
|
42
|
55
|
30
|
23
|
29
|
32
|
21
|
20
|
24
|
36
|
45
|
36
|
27
|
28
|
24
|
39
|
44
|
47
|
35
|
31
|
40
|
36
|
38
|
35
|
33
|
27
|
36
|
|
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