Bismarck, North 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
Bismarck, North Dakota, United States
AQI Trends: Highest and Lowest
Same Day Analysis (31st August ):
On this day, AQI across the 4 years varied significantly: 2025 ranks 1st highest AQI at 30 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
2025 Days Vs Air Quality
Bismarck, North Dakota, United States
92%
196
5%
10
1%
3
1%
3
Total number of days with different AQI categories in last 213 days in 2025 (152 days remaining)
Under WHO’s Safe Air Quality Limits: 92%
Health Risk Level:
Very Low
In 2025, 92% of 213 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
Bismarck, North Dakota, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
35AQI
25AQI
23AQI
23AQI
26AQI
21AQI
27AQI
25AQI
26AQI
27AQI
24AQI
27AQI
30AQI
32AQI
25AQI
24AQI
27AQI
28AQI
27AQI
27AQI
26AQI
29AQI
27AQI
28AQI
30AQI
30AQI
30AQI
30AQI
25AQI
24AQI
30AQI
24AQI
26AQI
23AQI
25AQI
23AQI
28AQI
27AQI
27AQI
34AQI
27AQI
25AQI
25AQI
29AQI
29AQI
27AQI
25AQI
19AQI
22AQI
28AQI
33AQI
28AQI
29AQI
28AQI
24AQI
20AQI
27AQI
25AQI
29AQI
27AQI
23AQI
26AQI
27AQI
30AQI
28AQI
30AQI
27AQI
28AQI
29AQI
27AQI
26AQI
26AQI
37AQI
21AQI
14AQI
20AQI
23AQI
25AQI
17AQI
18AQI
15AQI
20AQI
16AQI
21AQI
19AQI
17AQI
24AQI
15AQI
15AQI
16AQI
17AQI
18AQI
34AQI
23AQI
22AQI
19AQI
15AQI
18AQI
17AQI
14AQI
19AQI
21AQI
16AQI
13AQI
15AQI
23AQI
16AQI
14AQI
16AQI
14AQI
19AQI
15AQI
16AQI
22AQI
21AQI
25AQI
31AQI
23AQI
15AQI
18AQI
18AQI
23AQI
17AQI
17AQI
27AQI
26AQI
20AQI
26AQI
35AQI
46AQI
25AQI
26AQI
34AQI
42AQI
28AQI
22AQI
14AQI
21AQI
20AQI
13AQI
14AQI
14AQI
16AQI
20AQI
28AQI
23AQI
22AQI
24AQI
21AQI
22AQI
154AQI
167AQI
53AQI
65AQI
50AQI
36AQI
30AQI
37AQI
68AQI
64AQI
71AQI
165AQI
146AQI
72AQI
28AQI
25AQI
25AQI
29AQI
34AQI
28AQI
29AQI
27AQI
33AQI
31AQI
54AQI
42AQI
20AQI
18AQI
19AQI
17AQI
17AQI
20AQI
21AQI
23AQI
26AQI
26AQI
38AQI
30AQI
48AQI
39AQI
25AQI
101AQI
85AQI
41AQI
26AQI
49AQI
39AQI
71AQI
33AQI
21AQI
22AQI
22AQI
28AQI
32AQI
35AQI
39AQI
28AQI
30AQI
23AQI
34AQI
97AQI
134AQI
27AQI
26AQI
23AQI
19AQI
28AQI
50AQI
41AQI
No. of days
202531AQI
Highest AQI recorded in
June50AQI
Lowest AQI recorded in
April19AQI
202432AQI
Highest AQI recorded in
September45AQI
Lowest AQI recorded in
November22AQI
202342AQI
Highest AQI recorded in
September66AQI
Lowest AQI recorded in
December24AQI
202236AQI
Highest AQI recorded in
October47AQI
Lowest AQI recorded in
February29AQI
202137AQI
Highest AQI recorded in
July67AQI
Lowest AQI recorded in
November26AQI
202030AQI
Highest AQI recorded in
September37AQI
Lowest AQI recorded in
March26AQI
Most & Least Polluted Years Over the Last 6 Years
Bismarck's annual 2025 AQI (31) shows an average percentage change of -12.4% (improved AQI) compared to previous years: 2020 (30), 2021 (37), 2022 (36), 2023 (42), 2024 (32).
