Air Quality
Excellent
No health implications.
17
PM2.5
28
PM10
18
O3
0.7
CO
5
SO2
21
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
19 Oct
36
Excellent
Mon
20 Oct
38
Excellent
Tue
21 Oct
36
Excellent
Wed
22 Oct
38
Excellent
Thu
23 Oct
36
Excellent
Fri
24 Oct
40
Excellent
Sat
25 Oct
40
Excellent
Air quality in the last 12 months (Heishui)
|
2025/08
|
31
|
31
|
33
|
32
|
29
|
25
|
24
|
25
|
17
|
18
|
26
|
31
|
26
|
27
|
27
|
24
|
22
|
21
|
20
|
18
|
19
|
17
|
20
|
22
|
21
|
25
|
23
|
19
|
16
|
20
|
22
|
|
2025/07
|
26
|
23
|
20
|
20
|
20
|
23
|
23
|
26
|
24
|
29
|
21
|
23
|
25
|
27
|
32
|
35
|
37
|
30
|
28
|
18
|
17
|
24
|
20
|
18
|
20
|
17
|
22
|
24
|
25
|
22
|
27
|
|
2025/06
|
27
|
26
|
34
|
30
|
35
|
43
|
39
|
34
|
33
|
28
|
28
|
36
|
38
|
42
|
36
|
36
|
38
|
26
|
24
|
30
|
28
|
25
|
26
|
20
|
24
|
29
|
33
|
35
|
28
|
21
|
|
|
2025/05
|
36
|
42
|
48
|
44
|
30
|
31
|
31
|
35
|
76
|
66
|
47
|
44
|
35
|
42
|
32
|
51
|
57
|
63
|
49
|
41
|
47
|
46
|
53
|
42
|
37
|
41
|
27
|
25
|
32
|
29
|
27
|
|
2025/04
|
45
|
50
|
56
|
53
|
46
|
34
|
42
|
50
|
52
|
48
|
34
|
71
|
78
|
53
|
54
|
57
|
47
|
60
|
56
|
45
|
47
|
49
|
44
|
29
|
27
|
24
|
25
|
32
|
27
|
32
|
|
|
2025/03
|
42
|
52
|
38
|
32
|
27
|
31
|
54
|
49
|
28
|
37
|
50
|
63
|
50
|
28
|
28
|
28
|
34
|
35
|
41
|
43
|
39
|
40
|
47
|
40
|
37
|
46
|
90
|
57
|
54
|
59
|
49
|
|
2025/02
|
27
|
29
|
34
|
33
|
28
|
32
|
30
|
26
|
27
|
32
|
44
|
45
|
38
|
39
|
40
|
37
|
30
|
29
|
28
|
31
|
26
|
22
|
28
|
24
|
26
|
31
|
39
|
41
|
|||
|
2025/01
|
64
|
60
|
61
|
68
|
54
|
49
|
38
|
40
|
43
|
38
|
34
|
46
|
46
|
43
|
42
|
31
|
46
|
40
|
54
|
61
|
64
|
70
|
74
|
49
|
38
|
55
|
41
|
59
|
118
|
44
|
40
|
|
2024/12
|
59
|
61
|
54
|
40
|
40
|
36
|
33
|
21
|
22
|
30
|
38
|
33
|
33
|
38
|
46
|
55
|
65
|
65
|
55
|
44
|
46
|
32
|
36
|
42
|
47
|
49
|
58
|
54
|
46
|
48
|
50
|
|
2024/11
|
27
|
30
|
29
|
22
|
29
|
33
|
34
|
42
|
31
|
21
|
31
|
23
|
24
|
29
|
28
|
25
|
21
|
21
|
20
|
27
|
30
|
37
|
29
|
21
|
34
|
35
|
34
|
40
|
40
|
48
|
|
|
2024/10
|
24
|
28
|
24
|
23
|
27
|
33
|
32
|
31
|
28
|
25
|
26
|
24
|
29
|
34
|
32
|
30
|
23
|
31
|
20
|
20
|
25
|
27
|
36
|
40
|
29
|
23
|
28
|
36
|
33
|
30
|
27
|
|
2024/09
|
24
|
28
|
22
|
26
|
16
|
18
|
18
|
25
|
23
|
15
|
17
|
20
|
21
|
19
|
17
|
22
|
24
|
27
|
24
|
26
|
21
|
26
|
30
|
32
|
34
|
37
|
44
|
36
|
23
|
22
|
|
|
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