Air Quality
Excellent
No health implications.
8
PM2.5
17
PM10
28
O3
0.4
CO
5
SO2
8
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
17 Aug
55
Good
Mon
18 Aug
55
Good
Tue
19 Aug
54
Good
Wed
20 Aug
38
Excellent
Thu
21 Aug
38
Excellent
Fri
22 Aug
41
Excellent
Sat
23 Aug
49
Excellent
Air quality in the last 12 months (Dongchuan)
|
2025/06
|
17
|
20
|
23
|
25
|
29
|
35
|
36
|
34
|
39
|
34
|
30
|
39
|
47
|
41
|
19
|
27
|
22
|
15
|
15
|
16
|
19
|
14
|
21
|
14
|
14
|
16
|
16
|
17
|
19
|
17
|
|
|
2025/05
|
42
|
38
|
31
|
30
|
35
|
35
|
31
|
27
|
36
|
31
|
29
|
36
|
33
|
34
|
34
|
31
|
31
|
32
|
35
|
32
|
36
|
35
|
49
|
32
|
27
|
24
|
17
|
17
|
18
|
16
|
14
|
|
2025/04
|
46
|
47
|
60
|
69
|
58
|
51
|
52
|
62
|
58
|
62
|
53
|
78
|
79
|
65
|
58
|
39
|
30
|
32
|
36
|
34
|
29
|
34
|
47
|
45
|
40
|
57
|
58
|
38
|
34
|
28
|
|
|
2025/03
|
41
|
45
|
42
|
45
|
47
|
35
|
39
|
53
|
47
|
48
|
48
|
55
|
67
|
66
|
52
|
27
|
23
|
17
|
37
|
44
|
59
|
63
|
54
|
41
|
38
|
37
|
36
|
83
|
72
|
53
|
41
|
|
2025/02
|
40
|
48
|
21
|
40
|
49
|
44
|
26
|
34
|
39
|
34
|
38
|
46
|
46
|
54
|
48
|
53
|
34
|
39
|
52
|
41
|
45
|
42
|
43
|
31
|
33
|
32
|
37
|
37
|
|||
|
2025/01
|
47
|
50
|
43
|
49
|
39
|
55
|
36
|
36
|
34
|
30
|
20
|
44
|
46
|
47
|
50
|
71
|
58
|
56
|
59
|
63
|
49
|
50
|
52
|
34
|
35
|
34
|
45
|
50
|
76
|
42
|
34
|
|
2024/12
|
34
|
37
|
38
|
36
|
38
|
38
|
41
|
40
|
27
|
28
|
35
|
35
|
39
|
29
|
43
|
53
|
41
|
30
|
37
|
31
|
42
|
37
|
37
|
38
|
39
|
43
|
53
|
43
|
43
|
39
|
44
|
|
2024/11
|
26
|
28
|
43
|
31
|
35
|
46
|
37
|
22
|
21
|
41
|
33
|
28
|
31
|
42
|
46
|
47
|
49
|
39
|
39
|
43
|
28
|
31
|
26
|
23
|
30
|
31
|
30
|
36
|
31
|
28
|
|
|
2024/10
|
11
|
21
|
30
|
30
|
21
|
23
|
17
|
29
|
23
|
23
|
21
|
23
|
28
|
27
|
26
|
19
|
24
|
36
|
43
|
33
|
24
|
23
|
25
|
40
|
40
|
36
|
33
|
34
|
45
|
42
|
36
|
|
2024/09
|
28
|
21
|
23
|
27
|
24
|
32
|
27
|
17
|
16
|
15
|
23
|
24
|
29
|
33
|
34
|
26
|
21
|
26
|
32
|
35
|
32
|
21
|
26
|
43
|
39
|
34
|
33
|
17
|
20
|
23
|
|
|
2024/08
|
37
|
38
|
30
|
23
|
21
|
20
|
18
|
17
|
16
|
20
|
52
|
45
|
48
|
46
|
43
|
39
|
37
|
35
|
38
|
40
|
38
|
33
|
26
|
33
|
29
|
24
|
26
|
32
|
36
|
37
|
33
|
|
2024/07
|
17
|
22
|
22
|
10
|
11
|
15
|
14
|
14
|
18
|
18
|
13
|
17
|
17
|
19
|
15
|
17
|
21
|
24
|
21
|
20
|
19
|
20
|
25
|
32
|
24
|
34
|
37
|
24
|
21
|
18
|
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