Air Quality
Excellent
No health implications.
25
PM2.5
45
PM10
39
O3
0.6
CO
8
SO2
21
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
23 Dec
43
Excellent
Wed
24 Dec
43
Excellent
Thu
25 Dec
48
Excellent
Fri
26 Dec
44
Excellent
Sat
27 Dec
53
Good
Sun
28 Dec
52
Good
Mon
29 Dec
18
Excellent
Air quality in the last 12 months (Heishui)
|
2025/11
|
29
|
29
|
29
|
25
|
22
|
21
|
26
|
39
|
38
|
27
|
31
|
37
|
38
|
38
|
35
|
34
|
36
|
30
|
35
|
47
|
51
|
56
|
46
|
54
|
59
|
55
|
55
|
59
|
59
|
58
|
|
|
2025/10
|
21
|
24
|
21
|
19
|
24
|
19
|
19
|
21
|
23
|
22
|
15
|
21
|
22
|
28
|
29
|
32
|
26
|
27
|
25
|
19
|
17
|
16
|
18
|
16
|
20
|
29
|
29
|
30
|
27
|
31
|
36
|
|
2025/09
|
25
|
24
|
28
|
28
|
27
|
37
|
41
|
33
|
32
|
24
|
18
|
23
|
30
|
33
|
32
|
17
|
19
|
15
|
20
|
25
|
18
|
18
|
22
|
28
|
33
|
35
|
26
|
18
|
20
|
23
|
|
|
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
|
|
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