Pierre, 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
Pierre, South Dakota, United States
AQI Trends: Highest and Lowest
Same Day Analysis (12th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 36 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
Pierre, South Dakota, United States
6 AM12th Aug 2025
9 PM
5 AM13th Aug 2025
44AQI
31AQI
42AQI
27AQI
In the last 24 hours,
Pierre's AQI reached its highest point of 44 at 6 AM during the Day, while the lowest point, 27, was recorded at 9 PM during the Night between 12th Aug and 13th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Pierre, South Dakota, United States
30°C18/41°C
25°C16/33°C
19°C15/24°C
17°C9/24°C
22°C18/26°C
22°C18/27°C
23°C18/29°C
29°C20/38°C
31°C24/39°C
24°C20/28°C
25°C19/32°C
28°C21/36°C
30°C22/41°C
30°C21/37°C
27°C21/37°C
23°C18/31°C
23°C20/27°C
21°C17/25°C
19°C18/22°C
23°C18/30°C
22°C19/25°C
25°C18/32°C
27°C20/35°C
27°C20/34°C
30°C23/37°C
26°C23/27°C
25°C14/33°C
23°C15/29°C
27°C17/35°C
25°C17/30°C
--°C/°C
43AQI
43AQI
41AQI
41AQI
2025 Days Vs Air Quality
Pierre, South Dakota, United States
92%
207
7%
16
0.4%
1
Total number of days with different AQI categories in last 225 days in 2025 (140 days remaining)
Under WHO’s Safe Air Quality Limits: 92%
Health Risk Level:
Very Low
In 2025, 92% of 225 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
Pierre, South Dakota, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
35AQI
40AQI
24AQI
20AQI
22AQI
21AQI
33AQI
24AQI
26AQI
22AQI
21AQI
22AQI
25AQI
27AQI
24AQI
22AQI
28AQI
29AQI
45AQI
53AQI
42AQI
28AQI
26AQI
24AQI
26AQI
25AQI
25AQI
25AQI
25AQI
28AQI
27AQI
24AQI
26AQI
23AQI
24AQI
27AQI
29AQI
23AQI
30AQI
30AQI
35AQI
25AQI
27AQI
27AQI
34AQI
29AQI
26AQI
24AQI
23AQI
23AQI
23AQI
27AQI
23AQI
45AQI
40AQI
23AQI
22AQI
22AQI
24AQI
25AQI
24AQI
35AQI
30AQI
24AQI
22AQI
25AQI
23AQI
24AQI
26AQI
24AQI
24AQI
28AQI
36AQI
22AQI
17AQI
17AQI
21AQI
29AQI
21AQI
19AQI
18AQI
20AQI
17AQI
29AQI
23AQI
23AQI
49AQI
19AQI
20AQI
20AQI
33AQI
26AQI
28AQI
26AQI
23AQI
22AQI
21AQI
25AQI
24AQI
20AQI
24AQI
42AQI
38AQI
20AQI
19AQI
28AQI
34AQI
21AQI
19AQI
22AQI
23AQI
16AQI
17AQI
20AQI
21AQI
19AQI
21AQI
19AQI
18AQI
15AQI
17AQI
19AQI
20AQI
18AQI
24AQI
23AQI
23AQI
26AQI
38AQI
44AQI
37AQI
34AQI
40AQI
34AQI
25AQI
23AQI
18AQI
18AQI
19AQI
13AQI
14AQI
14AQI
14AQI
22AQI
22AQI
20AQI
19AQI
21AQI
20AQI
23AQI
73AQI
94AQI
58AQI
57AQI
49AQI
44AQI
35AQI
29AQI
56AQI
50AQI
55AQI
64AQI
62AQI
55AQI
30AQI
28AQI
29AQI
27AQI
27AQI
26AQI
28AQI
26AQI
27AQI
28AQI
31AQI
26AQI
22AQI
21AQI
19AQI
20AQI
22AQI
29AQI
29AQI
35AQI
32AQI
29AQI
31AQI
33AQI
29AQI
30AQI
25AQI
37AQI
43AQI
46AQI
29AQI
33AQI
38AQI
44AQI
27AQI
26AQI
21AQI
24AQI
26AQI
30AQI
37AQI
39AQI
24AQI
32AQI
26AQI
24AQI
46AQI
99AQI
89AQI
102AQI
67AQI
51AQI
41AQI
27AQI
28AQI
37AQI
21AQI
62AQI
83AQI
36AQI
28AQI
27AQI
24AQI
23AQI
25AQI
38AQI
34AQI
54AQI
No. of days
202530AQI
Highest AQI recorded in
August54AQI
Lowest AQI recorded in
April23AQI
202419AQI
Highest AQI recorded in
July40AQI
Lowest AQI recorded in
April8AQI
202320AQI
Highest AQI recorded in
September39AQI
Lowest AQI recorded in
December8AQI
202212AQI
Highest AQI recorded in
October20AQI
Lowest AQI recorded in
August6AQI
202117AQI
Highest AQI recorded in
July39AQI
Lowest AQI recorded in
November8AQI
202018AQI
Highest AQI recorded in
September26AQI
Lowest AQI recorded in
July14AQI
Most & Least Polluted Years Over the Last 6 Years
Pierre's annual 2025 AQI (30) shows an average percentage change of 81.3% (worsened AQI) compared to previous years: 2020 (18), 2021 (17), 2022 (12), 2023 (20), 2024 (19).