Air Quality
Excellent
No health implications.
11
PM2.5
15
PM10
32
O3
0.6
CO
6
SO2
4
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
20 Feb
41
Excellent
Sat
21 Feb
41
Excellent
Sun
22 Feb
40
Excellent
Mon
23 Feb
35
Excellent
Tue
24 Feb
39
Excellent
Wed
25 Feb
38
Excellent
Thu
26 Feb
17
Excellent
Air quality in the last 12 months (Hekou)
|
2026/01
|
45
|
25
|
19
|
23
|
19
|
19
|
28
|
41
|
34
|
41
|
56
|
58
|
78
|
64
|
70
|
43
|
47
|
43
|
47
|
47
|
43
|
23
|
22
|
25
|
35
|
36
|
33
|
36
|
45
|
42
|
43
|
|
2025/12
|
45
|
49
|
55
|
52
|
43
|
36
|
37
|
42
|
41
|
40
|
41
|
45
|
39
|
34
|
28
|
35
|
33
|
24
|
26
|
42
|
40
|
36
|
38
|
31
|
33
|
31
|
30
|
33
|
36
|
39
|
34
|
|
2025/11
|
21
|
16
|
18
|
23
|
14
|
20
|
21
|
18
|
13
|
11
|
16
|
21
|
26
|
25
|
28
|
32
|
33
|
15
|
17
|
30
|
42
|
41
|
30
|
34
|
44
|
49
|
45
|
47
|
45
|
45
|
|
|
2025/10
|
17
|
16
|
21
|
23
|
22
|
27
|
16
|
17
|
22
|
25
|
34
|
37
|
37
|
27
|
20
|
17
|
25
|
30
|
28
|
33
|
24
|
23
|
26
|
29
|
17
|
18
|
19
|
23
|
27
|
30
|
31
|
|
2025/09
|
16
|
16
|
20
|
23
|
23
|
26
|
29
|
28
|
23
|
16
|
17
|
14
|
15
|
20
|
24
|
23
|
24
|
20
|
20
|
19
|
29
|
29
|
21
|
23
|
24
|
20
|
21
|
26
|
22
|
18
|
|
|
2025/08
|
19
|
24
|
19
|
20
|
27
|
25
|
15
|
15
|
15
|
16
|
21
|
24
|
23
|
33
|
27
|
17
|
18
|
26
|
18
|
16
|
17
|
18
|
17
|
21
|
22
|
20
|
14
|
15
|
18
|
21
|
17
|
|
2025/07
|
10
|
10
|
13
|
12
|
16
|
22
|
22
|
17
|
20
|
20
|
19
|
22
|
20
|
19
|
19
|
21
|
22
|
22
|
23
|
28
|
22
|
16
|
16
|
11
|
14
|
15
|
21
|
27
|
31
|
29
|
22
|
|
2025/06
|
15
|
15
|
22
|
28
|
23
|
35
|
33
|
25
|
23
|
36
|
46
|
28
|
28
|
26
|
26
|
16
|
16
|
11
|
17
|
18
|
16
|
13
|
17
|
13
|
13
|
14
|
14
|
12
|
10
|
12
|
|
|
2025/05
|
38
|
33
|
25
|
22
|
25
|
31
|
41
|
43
|
45
|
31
|
18
|
20
|
32
|
40
|
21
|
17
|
19
|
20
|
21
|
17
|
25
|
28
|
34
|
44
|
28
|
22
|
15
|
19
|
18
|
18
|
13
|
|
2025/04
|
42
|
55
|
63
|
88
|
96
|
35
|
46
|
52
|
56
|
60
|
60
|
60
|
82
|
74
|
61
|
48
|
42
|
38
|
37
|
36
|
34
|
34
|
45
|
53
|
46
|
48
|
60
|
51
|
34
|
35
|
|
|
2025/03
|
39
|
44
|
64
|
72
|
88
|
63
|
46
|
45
|
44
|
45
|
53
|
47
|
48
|
56
|
68
|
43
|
46
|
29
|
33
|
47
|
55
|
74
|
78
|
65
|
67
|
67
|
72
|
94
|
84
|
39
|
38
|
|
2025/02
|
48
|
57
|
33
|
36
|
56
|
51
|
30
|
25
|
23
|
33
|
48
|
55
|
39
|
41
|
51
|
49
|
35
|
28
|
33
|
37
|
27
|
30
|
25
|
16
|
21
|
19
|
32
|
40
|
|||
|
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