Air Quality
Excellent
No health implications.
15
PM2.5
22
PM10
89
O3
0.5
CO
7
SO2
12
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
23 Feb
45
Excellent
Mon
24 Feb
50
Excellent
Tue
25 Feb
52
Good
Wed
26 Feb
52
Good
Thu
27 Feb
56
Good
Fri
28 Feb
56
Good
Sat
1 Mar
31
Excellent
Air quality in the last 12 months (Heishui)
|
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
|
|
|
2024/08
|
29
|
32
|
21
|
18
|
22
|
25
|
19
|
20
|
30
|
34
|
32
|
31
|
31
|
36
|
21
|
27
|
23
|
23
|
28
|
31
|
28
|
33
|
32
|
27
|
31
|
23
|
27
|
27
|
23
|
21
|
25
|
|
2024/07
|
18
|
27
|
20
|
20
|
19
|
34
|
17
|
14
|
15
|
19
|
24
|
25
|
19
|
15
|
15
|
19
|
18
|
17
|
21
|
16
|
19
|
19
|
20
|
20
|
31
|
38
|
26
|
24
|
21
|
24
|
27
|
|
2024/06
|
27
|
20
|
25
|
24
|
27
|
25
|
27
|
23
|
21
|
29
|
25
|
28
|
34
|
30
|
31
|
24
|
17
|
21
|
22
|
23
|
24
|
20
|
29
|
33
|
23
|
24
|
19
|
24
|
34
|
33
|
|
|
2024/05
|
23
|
19
|
20
|
32
|
44
|
45
|
49
|
30
|
36
|
43
|
36
|
40
|
39
|
37
|
37
|
42
|
52
|
44
|
36
|
40
|
33
|
35
|
43
|
45
|
33
|
32
|
27
|
20
|
18
|
25
|
34
|
|
2024/04
|
33
|
36
|
43
|
33
|
24
|
21
|
21
|
26
|
23
|
22
|
28
|
33
|
35
|
28
|
44
|
44
|
26
|
23
|
29
|
31
|
34
|
22
|
21
|
26
|
29
|
30
|
37
|
40
|
27
|
19
|
|
|
2024/03
|
31
|
26
|
37
|
39
|
30
|
39
|
40
|
42
|
41
|
33
|
31
|
29
|
18
|
26
|
24
|
61
|
50
|
41
|
57
|
42
|
43
|
44
|
46
|
31
|
19
|
19
|
25
|
26
|
24
|
27
|
30
|
|
2024/02
|
30
|
29
|
22
|
28
|
27
|
28
|
32
|
34
|
45
|
66
|
46
|
43
|
36
|
38
|
30
|
28
|
29
|
38
|
82
|
102
|
48
|
47
|
35
|
48
|
52
|
49
|
45
|
35
|
23
|
||
|
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