Air Quality
Excellent
No health implications.
17
PM2.5
45
PM10
83
O3
0.4
CO
7
SO2
9
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
9 May
70
Good
Sat
10 May
75
Good
Sun
11 May
94
Good
Mon
12 May
95
Good
Tue
13 May
82
Good
Wed
14 May
44
Excellent
Thu
15 May
20
Excellent
Air quality in the last 12 months (Hechuan)
|
2025/02
|
100
|
67
|
47
|
37
|
66
|
52
|
37
|
41
|
57
|
75
|
136
|
88
|
51
|
42
|
44
|
62
|
61
|
58
|
81
|
61
|
52
|
62
|
43
|
48
|
65
|
84
|
95
|
73
|
|||
|
2025/01
|
189
|
215
|
237
|
167
|
108
|
117
|
119
|
43
|
51
|
44
|
58
|
61
|
97
|
129
|
114
|
98
|
135
|
122
|
138
|
154
|
226
|
234
|
246
|
98
|
31
|
46
|
59
|
86
|
291
|
216
|
122
|
|
2024/12
|
116
|
139
|
113
|
74
|
35
|
29
|
36
|
35
|
46
|
62
|
59
|
55
|
50
|
58
|
75
|
87
|
138
|
165
|
132
|
104
|
135
|
104
|
91
|
104
|
130
|
128
|
150
|
145
|
177
|
123
|
134
|
|
2024/11
|
54
|
64
|
87
|
71
|
49
|
57
|
80
|
105
|
46
|
58
|
62
|
87
|
60
|
55
|
61
|
28
|
14
|
16
|
22
|
24
|
37
|
42
|
42
|
35
|
23
|
40
|
39
|
50
|
80
|
99
|
|
|
2024/10
|
23
|
31
|
37
|
53
|
73
|
62
|
48
|
57
|
86
|
104
|
73
|
40
|
52
|
56
|
81
|
117
|
29
|
49
|
49
|
17
|
24
|
26
|
58
|
93
|
100
|
96
|
38
|
70
|
110
|
106
|
96
|
|
2024/09
|
44
|
44
|
32
|
30
|
50
|
49
|
51
|
35
|
30
|
36
|
38
|
40
|
37
|
76
|
39
|
28
|
41
|
49
|
48
|
53
|
26
|
47
|
43
|
61
|
91
|
107
|
73
|
48
|
40
|
11
|
|
|
2024/08
|
35
|
31
|
21
|
28
|
34
|
34
|
35
|
26
|
31
|
35
|
55
|
68
|
73
|
76
|
85
|
65
|
66
|
73
|
63
|
67
|
68
|
46
|
31
|
33
|
21
|
34
|
52
|
40
|
34
|
39
|
28
|
|
2024/07
|
33
|
36
|
42
|
36
|
19
|
33
|
26
|
35
|
41
|
22
|
26
|
27
|
33
|
22
|
27
|
26
|
28
|
37
|
33
|
24
|
31
|
31
|
30
|
26
|
72
|
60
|
38
|
44
|
37
|
34
|
41
|
|
2024/06
|
68
|
31
|
41
|
28
|
39
|
31
|
40
|
39
|
33
|
39
|
46
|
40
|
54
|
57
|
58
|
43
|
35
|
29
|
33
|
31
|
23
|
40
|
45
|
46
|
43
|
40
|
19
|
20
|
29
|
40
|
|
|
2024/05
|
34
|
38
|
39
|
49
|
49
|
89
|
92
|
79
|
60
|
46
|
53
|
47
|
51
|
60
|
55
|
56
|
58
|
65
|
48
|
18
|
21
|
30
|
36
|
46
|
36
|
30
|
40
|
40
|
26
|
34
|
51
|
|
2024/04
|
67
|
39
|
33
|
38
|
29
|
36
|
31
|
37
|
41
|
42
|
56
|
41
|
57
|
54
|
84
|
42
|
44
|
48
|
28
|
55
|
55
|
34
|
46
|
44
|
52
|
49
|
74
|
53
|
35
|
21
|
|
|
2024/03
|
68
|
67
|
82
|
87
|
108
|
100
|
63
|
97
|
81
|
110
|
100
|
100
|
85
|
84
|
80
|
77
|
76
|
25
|
49
|
67
|
75
|
86
|
105
|
68
|
26
|
41
|
33
|
53
|
59
|
73
|
56
|
|
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