Air Quality
Excellent
No health implications.
21
PM2.5
42
PM10
41
O3
0.6
CO
4
SO2
18
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
16 Jul
62
Good
Thu
17 Jul
64
Good
Fri
18 Jul
51
Good
Sat
19 Jul
53
Good
Sun
20 Jul
53
Good
Mon
21 Jul
16
Excellent
Tue
22 Jul
17
Excellent
Air quality in the last 12 months (Longchuan)
|
2025/06
|
30
|
27
|
14
|
27
|
35
|
38
|
38
|
35
|
30
|
26
|
22
|
26
|
16
|
17
|
17
|
18
|
14
|
22
|
20
|
15
|
15
|
18
|
22
|
21
|
22
|
17
|
20
|
21
|
19
|
18
|
|
|
2025/05
|
52
|
49
|
53
|
51
|
35
|
29
|
28
|
47
|
32
|
30
|
28
|
37
|
42
|
39
|
32
|
23
|
23
|
30
|
23
|
22
|
25
|
30
|
27
|
22
|
44
|
43
|
43
|
38
|
16
|
17
|
34
|
|
2025/04
|
19
|
36
|
50
|
58
|
38
|
51
|
58
|
64
|
70
|
52
|
49
|
56
|
145
|
100
|
92
|
86
|
65
|
59
|
38
|
41
|
39
|
39
|
37
|
31
|
16
|
19
|
37
|
38
|
43
|
57
|
|
|
2025/03
|
51
|
38
|
36
|
25
|
13
|
12
|
18
|
31
|
38
|
50
|
50
|
43
|
33
|
33
|
30
|
11
|
50
|
43
|
45
|
51
|
54
|
56
|
62
|
66
|
73
|
58
|
42
|
46
|
13
|
9
|
8
|
|
2025/02
|
55
|
35
|
13
|
27
|
47
|
45
|
20
|
53
|
41
|
43
|
50
|
56
|
47
|
46
|
52
|
62
|
45
|
48
|
36
|
44
|
26
|
25
|
16
|
27
|
46
|
60
|
66
|
56
|
|||
|
2025/01
|
72
|
69
|
63
|
53
|
62
|
69
|
66
|
67
|
62
|
51
|
47
|
47
|
57
|
56
|
62
|
72
|
57
|
55
|
59
|
58
|
59
|
61
|
59
|
49
|
38
|
21
|
25
|
57
|
123
|
61
|
50
|
|
2024/12
|
60
|
57
|
54
|
49
|
58
|
62
|
45
|
34
|
48
|
46
|
45
|
27
|
30
|
60
|
52
|
53
|
57
|
54
|
54
|
58
|
51
|
59
|
74
|
57
|
66
|
66
|
71
|
78
|
71
|
69
|
66
|
|
2024/11
|
22
|
20
|
39
|
45
|
43
|
46
|
37
|
36
|
47
|
52
|
49
|
37
|
33
|
30
|
37
|
22
|
26
|
19
|
19
|
17
|
19
|
26
|
31
|
41
|
29
|
15
|
28
|
31
|
39
|
54
|
|
|
2024/10
|
23
|
18
|
28
|
29
|
29
|
34
|
32
|
31
|
32
|
35
|
46
|
51
|
52
|
47
|
46
|
36
|
36
|
42
|
43
|
28
|
28
|
32
|
25
|
32
|
37
|
42
|
45
|
16
|
25
|
37
|
31
|
|
2024/09
|
28
|
36
|
36
|
25
|
24
|
14
|
15
|
17
|
18
|
25
|
39
|
44
|
30
|
30
|
21
|
25
|
23
|
21
|
31
|
23
|
16
|
13
|
12
|
17
|
23
|
28
|
28
|
23
|
26
|
20
|
|
|
2024/08
|
23
|
29
|
31
|
38
|
28
|
37
|
35
|
36
|
39
|
40
|
34
|
32
|
17
|
19
|
19
|
20
|
24
|
15
|
16
|
16
|
14
|
20
|
23
|
26
|
30
|
36
|
38
|
33
|
32
|
29
|
26
|
|
2024/07
|
22
|
20
|
18
|
21
|
21
|
18
|
15
|
20
|
22
|
23
|
20
|
20
|
19
|
24
|
18
|
17
|
16
|
18
|
18
|
22
|
22
|
23
|
29
|
30
|
24
|
14
|
12
|
13
|
16
|
19
|
13
|
|
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