Air Quality
Excellent
No health implications.
4
PM2.5
9
PM10
78
O3
0.4
CO
5
SO2
3
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
30 Apr
63
Good
Thu
1 May
88
Good
Fri
2 May
82
Good
Sat
3 May
85
Good
Sun
4 May
58
Good
Mon
5 May
56
Good
Tue
6 May
27
Excellent
Air quality in the last 12 months (Huayuan)
|
2025/02
|
35
|
22
|
42
|
44
|
55
|
57
|
53
|
82
|
51
|
47
|
51
|
68
|
58
|
42
|
42
|
45
|
32
|
30
|
33
|
48
|
90
|
36
|
53
|
83
|
58
|
37
|
40
|
47
|
|||
|
2025/01
|
97
|
110
|
112
|
137
|
95
|
69
|
54
|
53
|
46
|
60
|
72
|
67
|
80
|
76
|
75
|
68
|
80
|
95
|
84
|
81
|
98
|
138
|
154
|
100
|
18
|
26
|
42
|
70
|
150
|
94
|
54
|
|
2024/12
|
40
|
49
|
66
|
57
|
28
|
28
|
35
|
29
|
37
|
29
|
34
|
49
|
60
|
58
|
48
|
46
|
55
|
61
|
68
|
76
|
86
|
65
|
56
|
58
|
65
|
74
|
70
|
80
|
97
|
116
|
87
|
|
2024/11
|
42
|
50
|
51
|
47
|
52
|
46
|
43
|
43
|
41
|
32
|
31
|
50
|
54
|
52
|
64
|
47
|
10
|
9
|
10
|
14
|
18
|
21
|
36
|
32
|
14
|
17
|
20
|
23
|
29
|
34
|
|
|
2024/10
|
13
|
29
|
39
|
38
|
41
|
45
|
40
|
30
|
36
|
40
|
57
|
68
|
44
|
37
|
34
|
33
|
24
|
23
|
19
|
15
|
24
|
24
|
25
|
32
|
25
|
31
|
36
|
35
|
31
|
33
|
36
|
|
2024/09
|
29
|
30
|
41
|
45
|
47
|
40
|
41
|
36
|
25
|
31
|
28
|
31
|
23
|
24
|
35
|
35
|
26
|
24
|
29
|
28
|
27
|
19
|
25
|
32
|
37
|
44
|
42
|
52
|
57
|
43
|
|
|
2024/08
|
11
|
13
|
16
|
18
|
15
|
17
|
21
|
26
|
25
|
26
|
31
|
46
|
32
|
26
|
35
|
31
|
21
|
21
|
20
|
22
|
24
|
26
|
21
|
18
|
15
|
19
|
22
|
21
|
22
|
24
|
25
|
|
2024/07
|
14
|
17
|
16
|
14
|
17
|
15
|
15
|
17
|
20
|
22
|
18
|
25
|
27
|
20
|
18
|
19
|
17
|
16
|
12
|
15
|
20
|
20
|
15
|
14
|
16
|
25
|
22
|
20
|
11
|
15
|
13
|
|
2024/06
|
25
|
26
|
25
|
16
|
12
|
16
|
27
|
21
|
14
|
15
|
15
|
18
|
20
|
17
|
26
|
28
|
17
|
15
|
18
|
14
|
30
|
25
|
18
|
17
|
18
|
14
|
12
|
14
|
12
|
16
|
|
|
2024/05
|
17
|
21
|
11
|
10
|
18
|
25
|
33
|
41
|
46
|
47
|
26
|
30
|
26
|
32
|
37
|
55
|
53
|
37
|
11
|
13
|
28
|
34
|
33
|
32
|
31
|
34
|
18
|
30
|
18
|
11
|
22
|
|
2024/04
|
30
|
23
|
20
|
35
|
30
|
25
|
22
|
25
|
26
|
30
|
33
|
32
|
21
|
27
|
39
|
29
|
13
|
26
|
17
|
26
|
42
|
38
|
30
|
31
|
23
|
22
|
27
|
24
|
21
|
13
|
|
|
2024/03
|
72
|
64
|
54
|
47
|
31
|
46
|
68
|
54
|
57
|
53
|
49
|
46
|
59
|
42
|
43
|
29
|
29
|
21
|
39
|
57
|
50
|
57
|
45
|
31
|
16
|
18
|
28
|
24
|
28
|
34
|
23
|
|
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