Air Quality
Excellent
No health implications.
15
PM2.5
17
PM10
24
O3
0.8
CO
6
SO2
9
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
11 Sep
39
Excellent
Sat
12 Sep
46
Excellent
Sun
13 Sep
47
Excellent
Mon
14 Sep
53
Good
Tue
15 Sep
42
Excellent
Wed
16 Sep
43
Excellent
Thu
17 Sep
15
Excellent
Air quality in the last 12 months (Hechuan)
|
2026/08
|
28
|
24
|
17
|
25
|
27
|
33
|
38
|
34
|
39
|
42
|
41
|
43
|
58
|
51
|
49
|
53
|
76
|
55
|
25
|
54
|
80
|
64
|
62
|
48
|
42
|
47
|
57
|
27
|
18
|
27
|
39
|
|
2026/07
|
34
|
23
|
32
|
43
|
34
|
36
|
38
|
31
|
32
|
28
|
26
|
31
|
36
|
31
|
36
|
33
|
28
|
31
|
43
|
49
|
54
|
49
|
40
|
41
|
29
|
29
|
27
|
29
|
34
|
26
|
27
|
|
2026/06
|
33
|
31
|
44
|
51
|
58
|
59
|
29
|
21
|
28
|
40
|
48
|
36
|
45
|
46
|
71
|
72
|
33
|
20
|
33
|
32
|
31
|
14
|
16
|
17
|
12
|
16
|
22
|
30
|
20
|
28
|
|
|
2026/05
|
57
|
32
|
44
|
39
|
64
|
63
|
35
|
23
|
42
|
50
|
64
|
82
|
59
|
75
|
59
|
30
|
26
|
21
|
27
|
29
|
33
|
26
|
25
|
24
|
21
|
28
|
26
|
24
|
25
|
29
|
33
|
|
2026/04
|
35
|
39
|
33
|
48
|
60
|
52
|
38
|
32
|
31
|
46
|
33
|
33
|
40
|
32
|
25
|
33
|
44
|
50
|
65
|
76
|
25
|
19
|
31
|
45
|
57
|
66
|
40
|
22
|
22
|
31
|
|
|
2026/03
|
28
|
34
|
38
|
33
|
55
|
51
|
38
|
36
|
37
|
32
|
54
|
51
|
56
|
35
|
21
|
23
|
21
|
21
|
32
|
34
|
43
|
45
|
40
|
26
|
36
|
31
|
47
|
37
|
43
|
25
|
24
|
|
2026/02
|
66
|
115
|
133
|
110
|
138
|
141
|
126
|
60
|
60
|
73
|
90
|
104
|
106
|
107
|
103
|
66
|
115
|
103
|
114
|
96
|
101
|
110
|
122
|
39
|
68
|
53
|
54
|
23
|
|||
|
2026/01
|
31
|
27
|
43
|
54
|
68
|
68
|
85
|
102
|
136
|
165
|
204
|
207
|
154
|
179
|
176
|
217
|
197
|
225
|
99
|
19
|
30
|
57
|
67
|
69
|
83
|
84
|
73
|
142
|
119
|
30
|
44
|
|
2025/12
|
149
|
173
|
95
|
64
|
77
|
77
|
88
|
96
|
139
|
131
|
102
|
95
|
39
|
58
|
76
|
106
|
135
|
148
|
140
|
74
|
33
|
39
|
29
|
41
|
42
|
40
|
70
|
81
|
103
|
112
|
68
|
|
2025/11
|
44
|
50
|
59
|
44
|
55
|
38
|
21
|
22
|
23
|
20
|
31
|
42
|
50
|
57
|
30
|
46
|
24
|
21
|
45
|
60
|
76
|
99
|
72
|
72
|
72
|
77
|
102
|
104
|
107
|
130
|
|
|
2025/10
|
38
|
20
|
22
|
19
|
22
|
27
|
41
|
37
|
32
|
54
|
51
|
27
|
17
|
27
|
31
|
32
|
22
|
23
|
16
|
13
|
16
|
23
|
26
|
34
|
30
|
33
|
35
|
49
|
55
|
36
|
46
|
|
2025/09
|
71
|
80
|
49
|
59
|
57
|
20
|
33
|
20
|
32
|
40
|
37
|
22
|
17
|
32
|
42
|
38
|
31
|
24
|
16
|
29
|
20
|
18
|
17
|
27
|
41
|
37
|
32
|
25
|
12
|
29
|
|
|
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