Air Quality
Excellent
No health implications.
17
PM2.5
20
PM10
28
O3
0.3
CO
4
SO2
11
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
28 Apr
48
Excellent
Tue
29 Apr
47
Excellent
Wed
30 Apr
45
Excellent
Thu
1 May
45
Excellent
Fri
2 May
42
Excellent
Sat
3 May
48
Excellent
Sun
4 May
21
Excellent
Air quality in the last 12 months (Longhua)
|
2025/02
|
33
|
17
|
34
|
25
|
29
|
39
|
43
|
35
|
54
|
42
|
36
|
28
|
38
|
26
|
22
|
21
|
36
|
50
|
44
|
36
|
39
|
26
|
33
|
29
|
30
|
45
|
41
|
29
|
|||
|
2025/01
|
66
|
52
|
65
|
54
|
61
|
71
|
49
|
53
|
69
|
63
|
46
|
43
|
44
|
45
|
44
|
57
|
59
|
50
|
49
|
57
|
43
|
55
|
51
|
42
|
34
|
36
|
36
|
33
|
50
|
51
|
52
|
|
2024/12
|
39
|
35
|
34
|
33
|
40
|
45
|
56
|
40
|
40
|
32
|
36
|
47
|
44
|
44
|
60
|
43
|
39
|
47
|
49
|
53
|
53
|
47
|
54
|
56
|
51
|
47
|
69
|
69
|
58
|
49
|
57
|
|
2024/11
|
49
|
43
|
38
|
38
|
44
|
48
|
54
|
47
|
49
|
52
|
45
|
46
|
48
|
48
|
39
|
40
|
26
|
31
|
27
|
12
|
15
|
29
|
32
|
35
|
30
|
28
|
39
|
42
|
40
|
42
|
|
|
2024/10
|
27
|
31
|
43
|
45
|
36
|
38
|
39
|
52
|
62
|
53
|
38
|
34
|
32
|
23
|
18
|
14
|
16
|
17
|
19
|
28
|
32
|
38
|
30
|
34
|
39
|
46
|
28
|
29
|
26
|
34
|
43
|
|
2024/09
|
11
|
14
|
16
|
26
|
25
|
22
|
21
|
30
|
26
|
21
|
15
|
20
|
22
|
18
|
30
|
32
|
25
|
28
|
22
|
15
|
16
|
15
|
14
|
17
|
21
|
28
|
26
|
21
|
18
|
18
|
|
|
2024/08
|
23
|
23
|
22
|
21
|
21
|
22
|
25
|
27
|
25
|
30
|
28
|
27
|
22
|
22
|
24
|
20
|
16
|
19
|
27
|
23
|
21
|
21
|
19
|
21
|
17
|
21
|
18
|
22
|
26
|
20
|
16
|
|
2024/07
|
19
|
20
|
19
|
15
|
10
|
14
|
12
|
13
|
16
|
18
|
18
|
19
|
16
|
17
|
18
|
17
|
13
|
14
|
17
|
16
|
14
|
15
|
15
|
18
|
17
|
17
|
25
|
25
|
19
|
18
|
20
|
|
2024/06
|
15
|
22
|
18
|
18
|
25
|
16
|
14
|
23
|
20
|
20
|
20
|
20
|
21
|
24
|
25
|
28
|
24
|
24
|
28
|
26
|
23
|
13
|
12
|
13
|
14
|
16
|
13
|
14
|
16
|
16
|
|
|
2024/05
|
28
|
18
|
21
|
21
|
26
|
34
|
26
|
22
|
31
|
34
|
31
|
28
|
20
|
28
|
33
|
31
|
40
|
19
|
16
|
19
|
18
|
14
|
14
|
16
|
17
|
18
|
23
|
21
|
27
|
27
|
18
|
|
2024/04
|
40
|
29
|
30
|
32
|
24
|
33
|
34
|
33
|
33
|
30
|
42
|
36
|
36
|
35
|
42
|
32
|
28
|
38
|
31
|
31
|
29
|
26
|
28
|
39
|
28
|
38
|
46
|
39
|
34
|
37
|
|
|
2024/03
|
15
|
17
|
31
|
26
|
40
|
47
|
40
|
35
|
39
|
35
|
26
|
22
|
31
|
43
|
53
|
40
|
29
|
31
|
27
|
41
|
51
|
46
|
34
|
33
|
42
|
34
|
40
|
35
|
33
|
26
|
32
|
|
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