Air Quality
Excellent
No health implications.
6
PM2.5
12
PM10
63
O3
1.2
CO
8
SO2
12
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
28 Feb
48
Excellent
Sat
1 Mar
38
Excellent
Sun
2 Mar
48
Excellent
Mon
3 Mar
55
Good
Tue
4 Mar
57
Good
Wed
5 Mar
24
Excellent
Thu
6 Mar
41
Excellent
Air quality in the last 12 months (Hecheng)
|
2025/01
|
107
|
95
|
131
|
187
|
162
|
102
|
83
|
54
|
49
|
70
|
80
|
85
|
87
|
90
|
85
|
71
|
79
|
128
|
114
|
96
|
112
|
147
|
180
|
138
|
18
|
25
|
59
|
102
|
241
|
125
|
46
|
|
2024/12
|
60
|
59
|
87
|
84
|
23
|
36
|
37
|
54
|
61
|
23
|
39
|
64
|
69
|
54
|
60
|
63
|
76
|
72
|
75
|
75
|
87
|
73
|
57
|
76
|
85
|
82
|
84
|
125
|
127
|
106
|
89
|
|
2024/11
|
54
|
68
|
62
|
61
|
66
|
63
|
58
|
62
|
78
|
65
|
61
|
60
|
62
|
68
|
68
|
54
|
13
|
11
|
14
|
22
|
37
|
39
|
48
|
36
|
12
|
23
|
36
|
44
|
47
|
54
|
|
|
2024/10
|
17
|
47
|
64
|
55
|
61
|
62
|
43
|
44
|
46
|
57
|
62
|
74
|
63
|
32
|
42
|
34
|
39
|
30
|
18
|
14
|
20
|
15
|
35
|
59
|
53
|
49
|
54
|
54
|
62
|
59
|
59
|
|
2024/09
|
44
|
38
|
54
|
38
|
74
|
59
|
54
|
41
|
36
|
37
|
38
|
43
|
26
|
33
|
41
|
34
|
36
|
43
|
37
|
36
|
40
|
31
|
42
|
49
|
50
|
60
|
63
|
52
|
56
|
65
|
|
|
2024/08
|
12
|
16
|
15
|
22
|
24
|
23
|
27
|
25
|
26
|
26
|
18
|
47
|
43
|
49
|
49
|
42
|
45
|
44
|
28
|
36
|
35
|
21
|
18
|
16
|
21
|
22
|
26
|
29
|
41
|
42
|
52
|
|
2024/07
|
17
|
14
|
18
|
16
|
16
|
13
|
15
|
15
|
16
|
19
|
22
|
21
|
21
|
17
|
22
|
18
|
18
|
17
|
10
|
15
|
24
|
23
|
24
|
28
|
29
|
32
|
33
|
19
|
12
|
16
|
19
|
|
2024/06
|
38
|
28
|
29
|
13
|
16
|
28
|
30
|
13
|
13
|
16
|
17
|
21
|
22
|
23
|
32
|
35
|
18
|
11
|
19
|
26
|
23
|
19
|
16
|
16
|
16
|
19
|
11
|
19
|
13
|
14
|
|
|
2024/05
|
18
|
27
|
12
|
13
|
22
|
37
|
49
|
55
|
44
|
36
|
23
|
53
|
55
|
61
|
64
|
75
|
53
|
29
|
14
|
13
|
33
|
45
|
44
|
38
|
41
|
25
|
21
|
45
|
24
|
10
|
30
|
|
2024/04
|
29
|
35
|
20
|
35
|
30
|
32
|
37
|
42
|
37
|
38
|
37
|
36
|
38
|
32
|
51
|
36
|
23
|
39
|
24
|
30
|
49
|
51
|
39
|
48
|
28
|
40
|
33
|
34
|
26
|
13
|
|
|
2024/03
|
83
|
51
|
50
|
24
|
22
|
79
|
83
|
64
|
57
|
55
|
49
|
54
|
44
|
52
|
38
|
33
|
25
|
21
|
46
|
78
|
70
|
48
|
33
|
45
|
19
|
26
|
36
|
25
|
41
|
45
|
33
|
|
2024/02
|
25
|
19
|
19
|
40
|
55
|
58
|
68
|
81
|
97
|
148
|
113
|
119
|
80
|
40
|
49
|
55
|
50
|
36
|
95
|
49
|
15
|
23
|
27
|
32
|
31
|
38
|
56
|
49
|
58
|
||
|
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