Air Quality
Excellent
No health implications.
16
PM2.5
38
PM10
13
O3
0.7
CO
2
SO2
17
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
31 May
40
Excellent
Sun
1 Jun
56
Good
Mon
2 Jun
52
Good
Tue
3 Jun
53
Good
Wed
4 Jun
57
Good
Thu
5 Jun
50
Excellent
Fri
6 Jun
24
Excellent
Air quality in the last 12 months (Hongjiang)
|
2025/04
|
49
|
56
|
66
|
84
|
90
|
77
|
78
|
90
|
78
|
61
|
57
|
54
|
127
|
102
|
81
|
76
|
69
|
65
|
31
|
30
|
42
|
30
|
53
|
32
|
35
|
42
|
30
|
39
|
54
|
33
|
|
|
2025/03
|
41
|
36
|
17
|
20
|
22
|
34
|
33
|
39
|
50
|
40
|
36
|
45
|
54
|
26
|
17
|
41
|
42
|
42
|
45
|
45
|
54
|
64
|
68
|
68
|
77
|
76
|
80
|
72
|
43
|
20
|
35
|
|
2025/02
|
24
|
17
|
45
|
54
|
69
|
72
|
52
|
76
|
52
|
51
|
51
|
60
|
69
|
51
|
40
|
48
|
35
|
36
|
39
|
35
|
100
|
29
|
48
|
93
|
44
|
38
|
33
|
34
|
|||
|
2025/01
|
120
|
117
|
131
|
168
|
159
|
103
|
81
|
61
|
48
|
67
|
71
|
77
|
85
|
81
|
77
|
75
|
78
|
110
|
99
|
98
|
116
|
141
|
177
|
166
|
26
|
27
|
45
|
90
|
241
|
116
|
44
|
|
2024/12
|
55
|
60
|
93
|
103
|
28
|
31
|
40
|
52
|
64
|
21
|
33
|
63
|
70
|
51
|
51
|
54
|
71
|
69
|
75
|
81
|
91
|
77
|
66
|
78
|
81
|
83
|
85
|
122
|
122
|
105
|
81
|
|
2024/11
|
49
|
66
|
64
|
61
|
72
|
65
|
56
|
54
|
67
|
60
|
54
|
60
|
66
|
75
|
82
|
66
|
17
|
12
|
13
|
21
|
32
|
35
|
57
|
41
|
17
|
21
|
34
|
37
|
42
|
49
|
|
|
2024/10
|
16
|
40
|
54
|
46
|
52
|
58
|
45
|
38
|
41
|
50
|
59
|
73
|
71
|
41
|
42
|
33
|
40
|
30
|
17
|
16
|
21
|
16
|
28
|
32
|
41
|
43
|
46
|
52
|
57
|
55
|
57
|
|
2024/09
|
32
|
30
|
36
|
29
|
47
|
42
|
39
|
37
|
28
|
29
|
36
|
37
|
24
|
26
|
39
|
34
|
38
|
37
|
35
|
33
|
32
|
27
|
38
|
40
|
48
|
53
|
56
|
49
|
52
|
50
|
|
|
2024/08
|
12
|
18
|
20
|
23
|
27
|
25
|
28
|
25
|
24
|
24
|
19
|
41
|
36
|
43
|
42
|
37
|
38
|
34
|
27
|
29
|
29
|
22
|
17
|
15
|
21
|
23
|
26
|
24
|
29
|
30
|
35
|
|
2024/07
|
13
|
15
|
16
|
17
|
16
|
14
|
16
|
15
|
20
|
20
|
23
|
22
|
23
|
20
|
21
|
22
|
20
|
19
|
12
|
18
|
25
|
26
|
21
|
25
|
27
|
27
|
27
|
16
|
13
|
18
|
15
|
|
2024/06
|
26
|
21
|
27
|
12
|
12
|
19
|
27
|
16
|
17
|
16
|
17
|
18
|
18
|
18
|
26
|
30
|
11
|
9
|
18
|
23
|
19
|
15
|
16
|
13
|
13
|
13
|
14
|
19
|
12
|
12
|
|
|
2024/05
|
18
|
30
|
14
|
11
|
21
|
34
|
40
|
45
|
38
|
31
|
21
|
46
|
46
|
52
|
57
|
64
|
51
|
27
|
15
|
14
|
26
|
41
|
38
|
32
|
34
|
21
|
17
|
35
|
19
|
10
|
21
|
|
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