Air Quality
Excellent
No health implications.
PM2.5
PM10
O3
CO
SO2
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
16 Sep
Wed
17 Sep
Thu
18 Sep
Fri
19 Sep
Sat
20 Sep
Sun
21 Sep
Mon
22 Sep
Real-time AQI (Monitoring Station in Yan'an)
枣园
4412
PM2.5
44
PM10
93
O3
0.4
CO
10
SO2
10
NO2
延大医附院
5110
PM2.5
52 *
PM10
87
O3
0.3
CO
8
SO2
9
NO2
百米大道
4712
PM2.5
47
PM10
92
O3
0.5
CO
12
SO2
10
NO2
西北局旧址
4018
PM2.5
40
PM10
88
O3
0.5
CO
5
SO2
16
NO2
Air quality in the last 12 months (Yan'an)
|
2025/08
|
35
|
43
|
43
|
32
|
37
|
45
|
43
|
38
|
25
|
26
|
35
|
36
|
33
|
42
|
37
|
25
|
36
|
34
|
37
|
25
|
46
|
33
|
15
|
27
|
31
|
35
|
19
|
19
|
16
|
16
|
24
|
|
2025/07
|
22
|
24
|
21
|
25
|
23
|
30
|
27
|
28
|
36
|
39
|
43
|
45
|
44
|
39
|
48
|
37
|
32
|
44
|
40
|
21
|
27
|
42
|
32
|
27
|
28
|
18
|
27
|
37
|
38
|
33
|
42
|
|
2025/06
|
34
|
32
|
27
|
28
|
38
|
41
|
45
|
33
|
51
|
45
|
49
|
50
|
58
|
42
|
47
|
48
|
41
|
38
|
30
|
30
|
29
|
36
|
33
|
44
|
37
|
29
|
29
|
22
|
39
|
22
|
|
|
2025/05
|
75
|
105
|
42
|
91
|
285
|
269
|
146
|
133
|
65
|
48
|
43
|
56
|
67
|
75
|
61
|
136
|
156
|
73
|
63
|
58
|
60
|
183
|
65
|
63
|
45
|
25
|
37
|
47
|
52
|
53
|
24
|
|
2025/04
|
58
|
59
|
85
|
107
|
62
|
81
|
98
|
119
|
112
|
59
|
172
|
207
|
140
|
49
|
47
|
123
|
104
|
81
|
77
|
74
|
224
|
158
|
68
|
48
|
61
|
56
|
41
|
38
|
64
|
137
|
|
|
2025/03
|
84
|
67
|
30
|
36
|
46
|
53
|
71
|
78
|
65
|
66
|
268
|
164
|
74
|
52
|
49
|
31
|
41
|
41
|
37
|
44
|
56
|
65
|
128
|
325
|
223
|
304
|
187
|
181
|
44
|
48
|
51
|
|
2025/02
|
63
|
50
|
41
|
56
|
38
|
121
|
48
|
33
|
51
|
62
|
78
|
67
|
63
|
63
|
62
|
72
|
66
|
70
|
63
|
57
|
65
|
41
|
39
|
47
|
60
|
65
|
62
|
62
|
|||
|
2025/01
|
61
|
59
|
60
|
71
|
105
|
45
|
46
|
43
|
46
|
52
|
65
|
69
|
87
|
41
|
38
|
48
|
57
|
66
|
62
|
57
|
58
|
78
|
109
|
143
|
66
|
59
|
34
|
71
|
118
|
66
|
59
|
|
2024/12
|
46
|
53
|
53
|
55
|
53
|
46
|
41
|
41
|
60
|
52
|
49
|
57
|
48
|
43
|
43
|
49
|
53
|
45
|
70
|
60
|
41
|
50
|
69
|
86
|
75
|
45
|
48
|
52
|
56
|
69
|
69
|
|
2024/11
|
32
|
29
|
35
|
40
|
42
|
50
|
64
|
73
|
80
|
73
|
73
|
52
|
38
|
35
|
70
|
60
|
41
|
49
|
38
|
40
|
48
|
60
|
86
|
74
|
51
|
48
|
62
|
46
|
42
|
43
|
|
|
2024/10
|
59
|
37
|
34
|
45
|
51
|
49
|
34
|
42
|
50
|
37
|
47
|
53
|
50
|
45
|
50
|
67
|
62
|
28
|
27
|
20
|
22
|
27
|
38
|
45
|
54
|
42
|
47
|
43
|
50
|
45
|
35
|
|
2024/09
|
31
|
47
|
37
|
40
|
33
|
40
|
20
|
40
|
61
|
32
|
35
|
41
|
35
|
23
|
43
|
38
|
33
|
34
|
38
|
20
|
24
|
33
|
44
|
49
|
51
|
52
|
78
|
63
|
29
|
36
|
|
|
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
*: primary pollution