Vermillion, South Dakota, United States Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
August Air Quality Analysis
Vermillion, South Dakota, United States
AQI Trends: Highest and Lowest
Same Day Analysis (12th August ):
On this day, AQI across the 3 years varied significantly: 2025 ranks 1st highest AQI at 48 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 12th Aug - 13th Aug 2025
Vermillion, South Dakota, United States
6 AM12th Aug 2025
8 PM
5 AM13th Aug 2025
62AQI
26AQI
39AQI
29AQI
In the last 24 hours,
Vermillion's AQI reached its highest point of 62 at 7 AM during the Day, while the lowest point, 26, was recorded at 5 PM during the Day between 12th Aug and 13th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Vermillion, South Dakota, United States
27°C19/35°C
28°C21/35°C
20°C16/24°C
19°C13/25°C
23°C15/29°C
25°C21/30°C
23°C18/28°C
28°C22/34°C
28°C20/34°C
29°C23/37°C
24°C19/29°C
25°C20/30°C
26°C19/33°C
28°C20/37°C
29°C21/37°C
26°C20/32°C
23°C20/27°C
21°C17/26°C
20°C15/25°C
18°C12/26°C
19°C16/24°C
21°C16/25°C
23°C18/29°C
25°C20/32°C
26°C22/32°C
28°C23/35°C
26°C22/29°C
22°C17/29°C
23°C17/29°C
22°C14/29°C
--°C/°C
43AQI
43AQI
43AQI
43AQI
2025 Days Vs Air Quality
Vermillion, South Dakota, United States
88%
196
12%
26
0.8%
2
Total number of days with different AQI categories in last 225 days in 2025 (140 days remaining)
Under WHO’s Safe Air Quality Limits: 88%
Health Risk Level:
Low
In 2025, 88% of 225 days were within WHO’s safe air quality limits. The risk of health issues is Low, but the long-term effects, especially on vulnerable individuals, remain uncertain.
Annual Air Quality Insights
Vermillion, South Dakota, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
25AQI
25AQI
25AQI
22AQI
20AQI
20AQI
25AQI
32AQI
44AQI
30AQI
33AQI
31AQI
23AQI
27AQI
31AQI
22AQI
27AQI
22AQI
23AQI
23AQI
23AQI
24AQI
25AQI
29AQI
23AQI
22AQI
24AQI
24AQI
22AQI
37AQI
41AQI
25AQI
33AQI
35AQI
23AQI
25AQI
31AQI
23AQI
35AQI
29AQI
34AQI
31AQI
36AQI
36AQI
47AQI
51AQI
28AQI
25AQI
25AQI
22AQI
26AQI
37AQI
48AQI
59AQI
30AQI
25AQI
26AQI
23AQI
25AQI
27AQI
28AQI
49AQI
39AQI
27AQI
24AQI
27AQI
29AQI
27AQI
29AQI
28AQI
27AQI
51AQI
58AQI
33AQI
19AQI
25AQI
30AQI
25AQI
22AQI
21AQI
21AQI
23AQI
22AQI
26AQI
23AQI
51AQI
41AQI
35AQI
18AQI
20AQI
23AQI
25AQI
21AQI
29AQI
25AQI
25AQI
24AQI
28AQI
40AQI
29AQI
37AQI
58AQI
56AQI
25AQI
20AQI
38AQI
55AQI
34AQI
24AQI
38AQI
32AQI
30AQI
37AQI
27AQI
20AQI
23AQI
30AQI
42AQI
22AQI
30AQI
28AQI
21AQI
24AQI
35AQI
32AQI
34AQI
36AQI
32AQI
39AQI
45AQI
37AQI
35AQI
40AQI
38AQI
40AQI
35AQI
18AQI
20AQI
21AQI
19AQI
17AQI
17AQI
22AQI
21AQI
24AQI
26AQI
24AQI
26AQI
26AQI
30AQI
37AQI
63AQI
52AQI
62AQI
68AQI
58AQI
56AQI
48AQI
64AQI
56AQI
62AQI
61AQI
60AQI
50AQI
45AQI
31AQI
23AQI
21AQI
18AQI
22AQI
26AQI
34AQI
36AQI
39AQI
23AQI
20AQI
17AQI
16AQI
16AQI
18AQI
19AQI
25AQI
23AQI
32AQI
41AQI
31AQI
32AQI
41AQI
24AQI
22AQI
21AQI
24AQI
44AQI
64AQI
53AQI
40AQI
29AQI
19AQI
18AQI
21AQI
22AQI
41AQI
32AQI
32AQI
24AQI
21AQI
22AQI
21AQI
25AQI
23AQI
32AQI
115AQI
124AQI
97AQI
85AQI
59AQI
52AQI
33AQI
39AQI
45AQI
29AQI
29AQI
61AQI
48AQI
27AQI
32AQI
30AQI
32AQI
29AQI
39AQI
33AQI
58AQI
No. of days
202533AQI
Highest AQI recorded in
August58AQI
Lowest AQI recorded in
January27AQI
202430AQI
Highest AQI recorded in
October39AQI
Lowest AQI recorded in
February4AQI
202320AQI
Highest AQI recorded in
December21AQI
Lowest AQI recorded in
November16AQI
202143AQI
Highest AQI recorded in
July53AQI
Lowest AQI recorded in
January36AQI
202034AQI
Highest AQI recorded in
July42AQI
Lowest AQI recorded in
August30AQI
Most & Least Polluted Years Over the Last 5 Years
Vermillion's annual 2025 AQI (33) shows an average percentage change of 11.2% (worsened AQI) compared to previous years: 2020 (34), 2021 (43), 2023 (20), 2024 (30).