Air Quality
Excellent
No health implications.
22
PM2.5
41
PM10
93
O3
0.4
CO
15
SO2
8
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
23 Feb
54
Good
Mon
24 Feb
58
Good
Tue
25 Feb
60
Good
Wed
26 Feb
57
Good
Thu
27 Feb
60
Good
Fri
28 Feb
58
Good
Sat
1 Mar
27
Excellent
Air quality in the last 12 months (Henan)
|
2025/01
|
33
|
44
|
37
|
51
|
35
|
40
|
54
|
55
|
50
|
57
|
35
|
23
|
24
|
35
|
45
|
40
|
45
|
52
|
38
|
38
|
40
|
49
|
50
|
53
|
77
|
53
|
17
|
21
|
40
|
28
|
30
|
|
2024/12
|
31
|
33
|
31
|
42
|
42
|
38
|
48
|
49
|
44
|
49
|
49
|
47
|
40
|
37
|
28
|
25
|
26
|
44
|
45
|
41
|
55
|
44
|
43
|
62
|
61
|
47
|
58
|
39
|
47
|
35
|
30
|
|
2024/11
|
27
|
30
|
28
|
33
|
32
|
27
|
29
|
30
|
36
|
39
|
47
|
42
|
44
|
35
|
38
|
45
|
38
|
38
|
36
|
30
|
31
|
26
|
28
|
39
|
57
|
31
|
22
|
24
|
37
|
33
|
|
|
2024/10
|
26
|
27
|
31
|
36
|
34
|
30
|
28
|
30
|
29
|
20
|
25
|
23
|
26
|
26
|
30
|
21
|
22
|
23
|
25
|
31
|
52
|
42
|
33
|
30
|
37
|
33
|
28
|
31
|
36
|
39
|
25
|
|
2024/09
|
29
|
19
|
22
|
16
|
16
|
16
|
19
|
24
|
12
|
15
|
15
|
19
|
13
|
14
|
15
|
13
|
15
|
16
|
18
|
13
|
13
|
22
|
30
|
26
|
34
|
31
|
33
|
33
|
27
|
25
|
|
|
2024/08
|
28
|
28
|
24
|
29
|
28
|
29
|
28
|
16
|
25
|
31
|
24
|
27
|
28
|
18
|
25
|
33
|
26
|
23
|
28
|
30
|
29
|
29
|
24
|
18
|
21
|
17
|
25
|
30
|
24
|
24
|
26
|
|
2024/07
|
22
|
22
|
24
|
19
|
28
|
35
|
27
|
18
|
21
|
24
|
32
|
27
|
21
|
20
|
26
|
23
|
23
|
28
|
27
|
18
|
97
|
67
|
26
|
54
|
57
|
35
|
24
|
24
|
26
|
24
|
26
|
|
2024/06
|
27
|
25
|
27
|
29
|
33
|
22
|
25
|
16
|
20
|
22
|
21
|
25
|
22
|
20
|
21
|
14
|
18
|
23
|
25
|
17
|
15
|
18
|
26
|
18
|
29
|
27
|
27
|
19
|
28
|
18
|
|
|
2024/05
|
27
|
22
|
25
|
49
|
44
|
41
|
36
|
23
|
26
|
34
|
19
|
26
|
26
|
19
|
22
|
21
|
45
|
26
|
40
|
49
|
34
|
34
|
41
|
51
|
22
|
32
|
32
|
17
|
14
|
18
|
27
|
|
2024/04
|
40
|
59
|
64
|
46
|
28
|
15
|
22
|
29
|
22
|
34
|
34
|
25
|
34
|
25
|
97
|
85
|
43
|
29
|
46
|
46
|
32
|
33
|
26
|
24
|
30
|
28
|
31
|
74
|
39
|
24
|
|
|
2024/03
|
56
|
52
|
52
|
63
|
49
|
69
|
50
|
54
|
46
|
46
|
40
|
32
|
34
|
31
|
31
|
146
|
76
|
77
|
63
|
48
|
37
|
40
|
69
|
24
|
28
|
22
|
41
|
38
|
25
|
28
|
35
|
|
2024/02
|
43
|
64
|
50
|
45
|
38
|
54
|
50
|
30
|
30
|
39
|
25
|
26
|
25
|
42
|
33
|
29
|
30
|
100
|
137
|
101
|
111
|
107
|
112
|
80
|
68
|
68
|
63
|
57
|
46
|
||
|
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