Black Hawk, 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!
October Air Quality Analysis
Black Hawk, South Dakota, United States
AQI Trends: Highest and Lowest
Same Day Analysis (3rd October ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 38 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 3rd Oct - 4th Oct 2025
Black Hawk, South Dakota, United States
6 AM3rd Oct 2025
6 PM
5 AM4th Oct 2025
49AQI
17AQI
39AQI
25AQI
In the last 24 hours,
Black Hawk's AQI reached its highest point of 49 at 9 AM during the Day, while the lowest point, 17, was recorded at 6 PM during the Day between 3rd Oct and 4th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Black Hawk, South Dakota, United States
19°C12/28°C
13°C6/21°C
15°C7/24°C
18°C9/29°C
24°C18/32°C
23°C17/30°C
23°C16/31°C
25°C18/35°C
24°C19/31°C
23°C16/30°C
19°C15/23°C
22°C15/32°C
17°C13/22°C
15°C14/18°C
15°C12/20°C
15°C11/20°C
17°C11/23°C
20°C12/30°C
19°C12/25°C
18°C13/25°C
20°C11/29°C
21°C13/30°C
21°C11/32°C
19°C9/29°C
23°C14/35°C
23°C15/32°C
22°C13/32°C
23°C18/29°C
22°C12/33°C
24°C13/35°C
--°C/°C
33AQI
26AQI
30AQI
27AQI
2025 Days Vs Air Quality
Black Hawk, South Dakota, United States
96%
183
4%
8
Total number of days with different AQI categories in last 277 days in 2025 (88 days remaining)
Under WHO’s Safe Air Quality Limits: 96%
Health Risk Level:
Very Low
In 2025, 96% of 277 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
Black Hawk, South Dakota, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
21AQI
26AQI
20AQI
19AQI
17AQI
20AQI
21AQI
20AQI
22AQI
23AQI
22AQI
23AQI
25AQI
24AQI
33AQI
36AQI
27AQI
25AQI
27AQI
21AQI
26AQI
21AQI
19AQI
17AQI
23AQI
17AQI
17AQI
21AQI
20AQI
21AQI
20AQI
23AQI
22AQI
17AQI
18AQI
20AQI
22AQI
23AQI
19AQI
25AQI
25AQI
20AQI
22AQI
23AQI
21AQI
22AQI
20AQI
32AQI
25AQI
22AQI
19AQI
17AQI
16AQI
24AQI
24AQI
23AQI
17AQI
15AQI
23AQI
21AQI
19AQI
17AQI
21AQI
17AQI
19AQI
35AQI
32AQI
28AQI
28AQI
28AQI
29AQI
28AQI
37AQI
56AQI
49AQI
46AQI
52AQI
47AQI
40AQI
27AQI
23AQI
24AQI
24AQI
23AQI
24AQI
28AQI
35AQI
33AQI
23AQI
29AQI
25AQI
22AQI
22AQI
21AQI
20AQI
22AQI
27AQI
28AQI
27AQI
28AQI
38AQI
24AQI
23AQI
25AQI
29AQI
23AQI
34AQI
29AQI
27AQI
26AQI
24AQI
27AQI
32AQI
39AQI
35AQI
33AQI
33AQI
28AQI
33AQI
29AQI
29AQI
35AQI
28AQI
26AQI
25AQI
44AQI
44AQI
47AQI
54AQI
48AQI
34AQI
26AQI
30AQI
27AQI
27AQI
21AQI
31AQI
36AQI
24AQI
26AQI
29AQI
34AQI
38AQI
28AQI
27AQI
32AQI
41AQI
43AQI
39AQI
33AQI
35AQI
42AQI
42AQI
38AQI
40AQI
35AQI
33AQI
30AQI
35AQI
41AQI
59AQI
70AQI
60AQI
40AQI
48AQI
46AQI
50AQI
49AQI
33AQI
26AQI
20AQI
23AQI
20AQI
17AQI
25AQI
29AQI
27AQI
26AQI
25AQI
25AQI
41AQI
31AQI
41AQI
54AQI
57AQI
34AQI
35AQI
18AQI
31AQI
34AQI
38AQI
21AQI
22AQI
22AQI
31AQI
30AQI
35AQI
37AQI
34AQI
No. of days
202529AQI
Highest AQI recorded in
September37AQI
Lowest AQI recorded in
March21AQI
Most & Least Polluted Years Over the Last 1 Years
Black Hawk's annual 2025 AQI (29) shows an average percentage change of NaN% (improved AQI) compared to previous years: .