Uc1, 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
Uc1, Vermillion, South Dakota, United States
AQI Trends: Highest and Lowest
Same Day Analysis (17th August):
On this day, AQI across the 3 years varied significantly: 2026 ranks 1st highest AQI at 36 of Good air quality on the same day.
Day & Night AQI Trend: 17th Aug - 18th Aug 2026
Uc1, Vermillion, South Dakota, United States
6 AM17th Aug 2026
8 PM
5 AM18th Aug 2026
53AQI
20AQI
51AQI
34AQI
In the last 24 hours,
Uc1's AQI reached its highest point of 53 at 11 AM during the Day, while the lowest point, 20, was recorded at 6 AM during the Day between 17th Aug and 18th Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Uc1, Vermillion, South Dakota, United States
30°C24/38°C
23°C19/29°C
20°C14/27°C
21°C13/30°C
21°C19/25°C
29°C20/40°C
31°C23/40°C
32°C26/39°C
29°C23/36°C
28°C21/36°C
26°C23/29°C
22°C18/24°C
23°C15/31°C
24°C15/32°C
26°C19/34°C
20°C16/24°C
20°C13/29°C
20°C12/28°C
23°C17/31°C
21°C11/30°C
25°C19/32°C
26°C20/32°C
28°C23/35°C
28°C22/34°C
25°C21/29°C
23°C21/26°C
23°C20/27°C
23°C17/29°C
23°C15/31°C
24°C20/30°C
46AQI
42AQI
48AQI
42AQI
2026 Days Vs Air Quality
Uc1, Vermillion, South Dakota, United States
90%
204
10%
22
Total number of days with different AQI categories in last 230 days in 2026 (135 days remaining)
Under WHO’s Safe Air Quality Limits: 90%
Health Risk Level:
Very Low
In 2026, 90% of 230 days were within WHO’s safe air quality limits. The risk of health issues is Very Low, but health impacts are still unclear.
Annual Air Quality Insights
Uc1, Vermillion, South Dakota, United States
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
29AQI (US)
34AQI (US)
37AQI (US)
39AQI (US)
25AQI (US)
32AQI (US)
29AQI (US)
32AQI (US)
27AQI (US)
32AQI (US)
25AQI (US)
23AQI (US)
32AQI (US)
23AQI (US)
24AQI (US)
31AQI (US)
29AQI (US)
32AQI (US)
26AQI (US)
25AQI (US)
34AQI (US)
44AQI (US)
42AQI (US)
34AQI (US)
41AQI (US)
38AQI (US)
32AQI (US)
33AQI (US)
38AQI (US)
55AQI (US)
33AQI (US)
34AQI (US)
45AQI (US)
43AQI (US)
36AQI (US)
46AQI (US)
39AQI (US)
36AQI (US)
30AQI (US)
44AQI (US)
38AQI (US)
31AQI (US)
36AQI (US)
44AQI (US)
42AQI (US)
40AQI (US)
40AQI (US)
36AQI (US)
43AQI (US)
35AQI (US)
25AQI (US)
24AQI (US)
30AQI (US)
29AQI (US)
41AQI (US)
35AQI (US)
29AQI (US)
32AQI (US)
25AQI (US)
34AQI (US)
50AQI (US)
36AQI (US)
40AQI (US)
44AQI (US)
31AQI (US)
37AQI (US)
34AQI (US)
32AQI (US)
32AQI (US)
36AQI (US)
32AQI (US)
37AQI (US)
28AQI (US)
20AQI (US)
29AQI (US)
30AQI (US)
25AQI (US)
37AQI (US)
41AQI (US)
35AQI (US)
35AQI (US)
34AQI (US)
33AQI (US)
42AQI (US)
42AQI (US)
18AQI (US)
39AQI (US)
36AQI (US)
43AQI (US)
38AQI (US)
26AQI (US)
30AQI (US)
28AQI (US)
31AQI (US)
29AQI (US)
30AQI (US)
25AQI (US)
32AQI (US)
28AQI (US)
27AQI (US)
24AQI (US)
28AQI (US)
24AQI (US)
28AQI (US)
31AQI (US)
30AQI (US)
19AQI (US)
21AQI (US)
34AQI (US)
41AQI (US)
41AQI (US)
25AQI (US)
21AQI (US)
23AQI (US)
16AQI (US)
22AQI (US)
20AQI (US)
21AQI (US)
20AQI (US)
19AQI (US)
22AQI (US)
36AQI (US)
32AQI (US)
24AQI (US)
28AQI (US)
35AQI (US)
27AQI (US)
28AQI (US)
50AQI (US)
45AQI (US)
63AQI (US)
55AQI (US)
52AQI (US)
51AQI (US)
49AQI (US)
52AQI (US)
43AQI (US)
39AQI (US)
34AQI (US)
47AQI (US)
44AQI (US)
41AQI (US)
21AQI (US)
22AQI (US)
22AQI (US)
28AQI (US)
22AQI (US)
14AQI (US)
22AQI (US)
27AQI (US)
23AQI (US)
26AQI (US)
19AQI (US)
15AQI (US)
18AQI (US)
18AQI (US)
23AQI (US)
21AQI (US)
16AQI (US)
14AQI (US)
16AQI (US)
14AQI (US)
18AQI (US)
16AQI (US)
22AQI (US)
19AQI (US)
29AQI (US)
23AQI (US)
20AQI (US)
17AQI (US)
16AQI (US)
22AQI (US)
22AQI (US)
19AQI (US)
20AQI (US)
28AQI (US)
38AQI (US)
46AQI (US)
40AQI (US)
49AQI (US)
36AQI (US)
43AQI (US)
78AQI (US)
68AQI (US)
65AQI (US)
64AQI (US)
45AQI (US)
69AQI (US)
62AQI (US)
89AQI (US)
74AQI (US)
41AQI (US)
89AQI (US)
74AQI (US)
44AQI (US)
61AQI (US)
48AQI (US)
48AQI (US)
49AQI (US)
52AQI (US)
47AQI (US)
46AQI (US)
48AQI (US)
46AQI (US)
52AQI (US)
57AQI (US)
48AQI (US)
51AQI (US)
39AQI (US)
39AQI (US)
36AQI (US)
39AQI (US)
57AQI (US)
46AQI (US)
43AQI (US)
47AQI (US)
48AQI (US)
47AQI (US)
46AQI (US)
42AQI (US)
41AQI (US)
46AQI (US)
49AQI (US)
42AQI (US)
40AQI (US)
36AQI (US)
33AQI (US)
36AQI (US)
35AQI (US)
27AQI (US)
36AQI (US)
22AQI (US)
56AQI (US)
44AQI (US)
No. of days
202636AQI (US)
Highest AQI (US) recorded in
July56AQI (US)
Lowest AQI (US) recorded in
June22AQI (US)
202535AQI (US)
Highest AQI (US) recorded in
October47AQI (US)
Lowest AQI (US) recorded in
January27AQI (US)
202430AQI (US)
Highest AQI (US) recorded in
October39AQI (US)
Lowest AQI (US) recorded in
February4AQI (US)
202320AQI (US)
Highest AQI (US) recorded in
December21AQI (US)
Lowest AQI (US) recorded in
November16AQI (US)
202143AQI (US)
Highest AQI (US) recorded in
July53AQI (US)
Lowest AQI (US) recorded in
April36AQI (US)
202034AQI (US)
Highest AQI (US) recorded in
July42AQI (US)
Lowest AQI (US) recorded in
November30AQI (US)
Most & Least Polluted Years Over the Last 6 Years
Uc1's annual 2026 AQI (US) (36) shows an average percentage change of 18.4% (worsened AQI (US)) compared to previous years: 2020 (34), 2021 (43), 2023 (20), 2024 (30), 2025 (35).