Rapid City, 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
Rapid City, South Dakota, United States
AQI Trends: Highest and Lowest
Same Day Analysis (16th August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 4th highest AQI at 36 of Good air quality, showing improvement over 2025, 2024 and 2023 on the same day.
Day & Night AQI Trend: 16th Aug - 17th Aug 2026
Rapid City, South Dakota, United States
5 AM16th Aug 2026
8 PM
4 AM17th Aug 2026
52AQI
10AQI
48AQI
9AQI
In the last 24 hours,
Rapid City's AQI reached its highest point of 52 at 7 AM during the Day, while the lowest point, 9, was recorded at 8 PM during the Night between 16th Aug and 17th Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Rapid City, South Dakota, United States
32°C24/40°C
30°C25/36°C
26°C18/32°C
25°C19/33°C
23°C18/28°C
29°C18/39°C
34°C23/44°C
33°C24/41°C
31°C23/41°C
29°C22/38°C
28°C21/38°C
25°C21/33°C
25°C17/33°C
28°C17/38°C
32°C24/41°C
25°C16/30°C
18°C10/26°C
23°C12/32°C
27°C16/37°C
25°C17/31°C
27°C17/37°C
26°C18/34°C
26°C19/35°C
26°C19/36°C
22°C16/32°C
19°C16/24°C
23°C18/32°C
21°C18/26°C
20°C11/29°C
23°C15/31°C
54AQI
52AQI
55AQI
52AQI
2026 Days Vs Air Quality
Rapid City, South Dakota, United States
92%
207
8%
18
Total number of days with different AQI categories in last 229 days in 2026 (136 days remaining)
Under WHO’s Safe Air Quality Limits: 92%
Health Risk Level:
Very Low
In 2026, 92% of 229 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
Rapid City, South Dakota, United States
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
26AQI (US)
26AQI (US)
15AQI (US)
18AQI (US)
20AQI (US)
18AQI (US)
14AQI (US)
36AQI (US)
20AQI (US)
25AQI (US)
33AQI (US)
44AQI (US)
34AQI (US)
24AQI (US)
29AQI (US)
51AQI (US)
40AQI (US)
28AQI (US)
34AQI (US)
32AQI (US)
38AQI (US)
34AQI (US)
33AQI (US)
28AQI (US)
23AQI (US)
25AQI (US)
24AQI (US)
24AQI (US)
28AQI (US)
40AQI (US)
28AQI (US)
30AQI (US)
26AQI (US)
26AQI (US)
22AQI (US)
30AQI (US)
26AQI (US)
26AQI (US)
29AQI (US)
28AQI (US)
28AQI (US)
30AQI (US)
31AQI (US)
30AQI (US)
35AQI (US)
34AQI (US)
29AQI (US)
28AQI (US)
24AQI (US)
25AQI (US)
20AQI (US)
20AQI (US)
24AQI (US)
27AQI (US)
33AQI (US)
28AQI (US)
26AQI (US)
24AQI (US)
23AQI (US)
27AQI (US)
38AQI (US)
34AQI (US)
28AQI (US)
27AQI (US)
20AQI (US)
28AQI (US)
22AQI (US)
24AQI (US)
20AQI (US)
31AQI (US)
32AQI (US)
26AQI (US)
20AQI (US)
21AQI (US)
24AQI (US)
20AQI (US)
26AQI (US)
44AQI (US)
31AQI (US)
29AQI (US)
18AQI (US)
20AQI (US)
29AQI (US)
30AQI (US)
18AQI (US)
18AQI (US)
17AQI (US)
27AQI (US)
18AQI (US)
20AQI (US)
23AQI (US)
16AQI (US)
19AQI (US)
21AQI (US)
22AQI (US)
24AQI (US)
29AQI (US)
38AQI (US)
17AQI (US)
28AQI (US)
26AQI (US)
38AQI (US)
29AQI (US)
30AQI (US)
28AQI (US)
23AQI (US)
33AQI (US)
16AQI (US)
16AQI (US)
20AQI (US)
22AQI (US)
17AQI (US)
17AQI (US)
18AQI (US)
18AQI (US)
18AQI (US)
22AQI (US)
18AQI (US)
17AQI (US)
14AQI (US)
18AQI (US)
23AQI (US)
22AQI (US)
26AQI (US)
20AQI (US)
22AQI (US)
18AQI (US)
24AQI (US)
30AQI (US)
29AQI (US)
25AQI (US)
20AQI (US)
24AQI (US)
26AQI (US)
38AQI (US)
33AQI (US)
32AQI (US)
34AQI (US)
29AQI (US)
38AQI (US)
49AQI (US)
24AQI (US)
22AQI (US)
19AQI (US)
16AQI (US)
16AQI (US)
19AQI (US)
24AQI (US)
30AQI (US)
24AQI (US)
16AQI (US)
19AQI (US)
22AQI (US)
24AQI (US)
23AQI (US)
13AQI (US)
18AQI (US)
15AQI (US)
24AQI (US)
15AQI (US)
20AQI (US)
20AQI (US)
18AQI (US)
14AQI (US)
14AQI (US)
18AQI (US)
14AQI (US)
14AQI (US)
16AQI (US)
17AQI (US)
14AQI (US)
18AQI (US)
27AQI (US)
20AQI (US)
18AQI (US)
19AQI (US)
22AQI (US)
24AQI (US)
23AQI (US)
44AQI (US)
22AQI (US)
22AQI (US)
28AQI (US)
23AQI (US)
21AQI (US)
17AQI (US)
19AQI (US)
14AQI (US)
20AQI (US)
20AQI (US)
28AQI (US)
30AQI (US)
47AQI (US)
74AQI (US)
50AQI (US)
51AQI (US)
44AQI (US)
54AQI (US)
58AQI (US)
56AQI (US)
52AQI (US)
48AQI (US)
50AQI (US)
46AQI (US)
43AQI (US)
50AQI (US)
44AQI (US)
45AQI (US)
50AQI (US)
50AQI (US)
52AQI (US)
70AQI (US)
74AQI (US)
63AQI (US)
59AQI (US)
64AQI (US)
65AQI (US)
72AQI (US)
58AQI (US)
58AQI (US)
54AQI (US)
44AQI (US)
46AQI (US)
44AQI (US)
36AQI (US)
29AQI (US)
27AQI (US)
25AQI (US)
23AQI (US)
25AQI (US)
19AQI (US)
38AQI (US)
57AQI (US)
No. of days
202629AQI (US)
Highest AQI (US) recorded in
August57AQI (US)
Lowest AQI (US) recorded in
June19AQI (US)
202533AQI (US)
Highest AQI (US) recorded in
October41AQI (US)
Lowest AQI (US) recorded in
March22AQI (US)
202437AQI (US)
Highest AQI (US) recorded in
July53AQI (US)
Lowest AQI (US) recorded in
November26AQI (US)
202341AQI (US)
Highest AQI (US) recorded in
July51AQI (US)
Lowest AQI (US) recorded in
December31AQI (US)
202239AQI (US)
Highest AQI (US) recorded in
September48AQI (US)
Lowest AQI (US) recorded in
August28AQI (US)
202138AQI (US)
Highest AQI (US) recorded in
July56AQI (US)
Lowest AQI (US) recorded in
May28AQI (US)
202035AQI (US)
Highest AQI (US) recorded in
September45AQI (US)
Lowest AQI (US) recorded in
May25AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Rapid City's annual 2026 AQI (US) (29) shows an average percentage change of -21.5% (improved AQI (US)) compared to previous years: 2020 (35), 2021 (38), 2022 (39), 2023 (41), 2024 (37), 2025 (33).