Air Quality
Excellent
No health implications.
19
PM2.5
32
PM10
75
O3
0.6
CO
4
SO2
9
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
9 Mar
53
Good
Mon
10 Mar
49
Excellent
Tue
11 Mar
40
Excellent
Wed
12 Mar
36
Excellent
Thu
13 Mar
39
Excellent
Fri
14 Mar
37
Excellent
Sat
15 Mar
75
Good
Air quality in the last 12 months (Chengmai)
|
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
|
|
2024/02
|
24
|
25
|
22
|
23
|
22
|
23
|
33
|
11
|
17
|
58
|
50
|
48
|
37
|
33
|
32
|
37
|
33
|
24
|
28
|
33
|
31
|
30
|
34
|
29
|
27
|
25
|
24
|
26
|
35
|
||
|
1
|
2
|
3
|
4
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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