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
18 May
Tue
19 May
Wed
20 May
Thu
21 May
Fri
22 May
Sat
23 May
Sun
24 May
Real-time AQI (Monitoring Station in Dali Prefecture)
大理市环境监测站
3217
PM2.5
32
PM10
90
O3
0.3
CO
4
SO2
6
NO2
大理古城
2514
PM2.5
19
PM10
79
O3
0.4
CO
6
SO2
6
NO2
Air quality in the last 12 months (Dali Prefecture)
|
2026/04
|
31
|
32
|
34
|
34
|
42
|
33
|
32
|
31
|
28
|
30
|
37
|
36
|
49
|
57
|
61
|
49
|
39
|
45
|
50
|
37
|
45
|
44
|
39
|
42
|
54
|
50
|
38
|
30
|
27
|
23
|
|
|
2026/03
|
50
|
52
|
46
|
46
|
54
|
79
|
71
|
71
|
57
|
30
|
44
|
63
|
44
|
29
|
27
|
36
|
34
|
32
|
40
|
33
|
34
|
32
|
29
|
29
|
33
|
31
|
39
|
51
|
31
|
30
|
30
|
|
2026/02
|
24
|
21
|
21
|
24
|
23
|
23
|
25
|
25
|
25
|
25
|
19
|
19
|
19
|
19
|
33
|
43
|
55
|
39
|
31
|
26
|
25
|
29
|
35
|
35
|
47
|
54
|
43
|
48
|
|||
|
2026/01
|
34
|
25
|
24
|
21
|
22
|
26
|
24
|
27
|
30
|
30
|
31
|
28
|
28
|
32
|
28
|
26
|
31
|
32
|
27
|
26
|
26
|
23
|
27
|
31
|
29
|
29
|
30
|
32
|
30
|
26
|
26
|
|
2025/12
|
34
|
31
|
28
|
25
|
25
|
25
|
28
|
26
|
29
|
30
|
30
|
30
|
32
|
32
|
30
|
26
|
28
|
30
|
30
|
30
|
27
|
29
|
30
|
30
|
30
|
28
|
28
|
31
|
30
|
28
|
30
|
|
2025/11
|
18
|
18
|
12
|
16
|
12
|
15
|
17
|
19
|
19
|
19
|
17
|
19
|
21
|
31
|
26
|
26
|
24
|
26
|
21
|
21
|
19
|
22
|
22
|
23
|
36
|
39
|
33
|
36
|
35
|
35
|
|
|
2025/10
|
15
|
14
|
14
|
15
|
16
|
18
|
19
|
13
|
15
|
14
|
16
|
15
|
16
|
17
|
18
|
19
|
13
|
13
|
12
|
14
|
16
|
19
|
22
|
18
|
16
|
18
|
19
|
21
|
21
|
21
|
21
|
|
2025/09
|
21
|
19
|
20
|
20
|
24
|
26
|
21
|
19
|
22
|
22
|
20
|
19
|
18
|
17
|
18
|
15
|
17
|
18
|
16
|
15
|
18
|
19
|
19
|
16
|
23
|
20
|
14
|
16
|
15
|
12
|
|
|
2025/08
|
21
|
21
|
18
|
18
|
18
|
23
|
21
|
16
|
17
|
18
|
16
|
20
|
17
|
24
|
28
|
29
|
20
|
21
|
23
|
21
|
17
|
16
|
16
|
17
|
18
|
23
|
22
|
19
|
20
|
24
|
24
|
|
2025/07
|
20
|
23
|
17
|
17
|
16
|
18
|
17
|
17
|
18
|
22
|
22
|
25
|
29
|
31
|
22
|
27
|
28
|
26
|
29
|
28
|
22
|
23
|
22
|
20
|
18
|
18
|
20
|
21
|
24
|
26
|
20
|
|
2025/06
|
15
|
14
|
15
|
34
|
36
|
32
|
22
|
24
|
26
|
21
|
26
|
31
|
32
|
31
|
20
|
16
|
17
|
15
|
13
|
16
|
17
|
13
|
15
|
14
|
18
|
14
|
17
|
17
|
19
|
17
|
|
|
2025/05
|
30
|
25
|
29
|
21
|
26
|
27
|
24
|
25
|
25
|
39
|
25
|
30
|
32
|
29
|
35
|
32
|
31
|
23
|
27
|
28
|
27
|
25
|
37
|
22
|
17
|
18
|
14
|
13
|
13
|
13
|
14
|
|
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