Air Quality
Excellent
No health implications.
12
PM2.5
20
PM10
68
O3
0.4
CO
6
SO2
3
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
22 Feb
45
Excellent
Mon
23 Feb
46
Excellent
Tue
24 Feb
45
Excellent
Wed
25 Feb
45
Excellent
Thu
26 Feb
36
Excellent
Fri
27 Feb
40
Excellent
Sat
28 Feb
36
Excellent
Chengmai Air quality rank
Air quality in the last 12 months (Chengmai)
|
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
|
|
|
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
|
|||
|
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