Air Quality
Excellent
No health implications.
12
PM2.5
22
PM10
92
O3
0.3
CO
9
SO2
2
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
25 Apr
57
Good
Sat
26 Apr
59
Good
Sun
27 Apr
60
Good
Mon
28 Apr
62
Good
Tue
29 Apr
64
Good
Wed
30 Apr
64
Good
Thu
1 May
29
Excellent
Air quality in the last 12 months (Henan)
|
2025/02
|
36
|
44
|
38
|
40
|
51
|
52
|
48
|
48
|
43
|
46
|
53
|
58
|
47
|
49
|
42
|
39
|
31
|
34
|
46
|
49
|
48
|
45
|
50
|
45
|
35
|
32
|
42
|
42
|
|||
|
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
|
|
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