Boise, Idaho, 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
Boise, Idaho, United States
AQI Trends: Highest and Lowest
Same Day Analysis (11th August):
On this day, AQI across the 4 years varied significantly: 2026 ranks 1st highest AQI at 103 of Poor air quality on the same day.
Day & Night AQI Trend: 11th Aug - 12th Aug 2026
Boise, Idaho, United States
6 AM11th Aug 2026
9 PM
5 AM12th Aug 2026
118AQI
92AQI
112AQI
88AQI
In the last 24 hours,
Boise's AQI reached its highest point of 118 at 6 PM during the Day, while the lowest point, 88, was recorded at 5 AM during the Night between 11th Aug and 12th Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Boise, Idaho, United States
28°C25/33°C
29°C20/37°C
31°C19/41°C
31°C24/39°C
31°C22/39°C
29°C19/39°C
31°C20/41°C
30°C24/37°C
29°C23/37°C
30°C20/40°C
30°C20/40°C
32°C22/40°C
27°C18/36°C
26°C16/35°C
27°C15/37°C
27°C16/37°C
29°C20/37°C
29°C17/40°C
30°C20/39°C
24°C17/31°C
22°C13/30°C
22°C11/32°C
26°C14/36°C
29°C17/39°C
30°C18/39°C
29°C18/38°C
27°C16/37°C
27°C16/36°C
27°C15/37°C
26°C17/35°C
103AQI
96AQI
101AQI
93AQI
2026 Days Vs Air Quality
Boise, Idaho, United States
87%
192
6%
13
5%
12
1%
3
Total number of days with different AQI categories in last 224 days in 2026 (141 days remaining)
Under WHO’s Safe Air Quality Limits: 87%
Health Risk Level:
Low
In 2026, 87% of 224 days were within WHO’s safe air quality limits. The risk of health issues is Low, but the long-term effects, especially on vulnerable individuals, remain uncertain.
Annual Air Quality Insights
Boise, Idaho, United States
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
58AQI (US)
46AQI (US)
27AQI (US)
26AQI (US)
20AQI (US)
30AQI (US)
26AQI (US)
31AQI (US)
54AQI (US)
35AQI (US)
36AQI (US)
42AQI (US)
44AQI (US)
42AQI (US)
38AQI (US)
39AQI (US)
34AQI (US)
32AQI (US)
29AQI (US)
23AQI (US)
31AQI (US)
35AQI (US)
42AQI (US)
38AQI (US)
28AQI (US)
29AQI (US)
38AQI (US)
30AQI (US)
40AQI (US)
48AQI (US)
39AQI (US)
32AQI (US)
37AQI (US)
40AQI (US)
34AQI (US)
40AQI (US)
43AQI (US)
42AQI (US)
43AQI (US)
38AQI (US)
31AQI (US)
28AQI (US)
33AQI (US)
26AQI (US)
39AQI (US)
25AQI (US)
34AQI (US)
34AQI (US)
37AQI (US)
25AQI (US)
32AQI (US)
27AQI (US)
34AQI (US)
32AQI (US)
28AQI (US)
34AQI (US)
25AQI (US)
25AQI (US)
24AQI (US)
37AQI (US)
47AQI (US)
25AQI (US)
36AQI (US)
40AQI (US)
32AQI (US)
32AQI (US)
30AQI (US)
23AQI (US)
24AQI (US)
27AQI (US)
27AQI (US)
37AQI (US)
42AQI (US)
35AQI (US)
27AQI (US)
38AQI (US)
34AQI (US)
27AQI (US)
28AQI (US)
29AQI (US)
28AQI (US)
30AQI (US)
39AQI (US)
29AQI (US)
22AQI (US)
21AQI (US)
28AQI (US)
24AQI (US)
25AQI (US)
21AQI (US)
29AQI (US)
33AQI (US)
28AQI (US)
22AQI (US)
25AQI (US)
26AQI (US)
24AQI (US)
23AQI (US)
28AQI (US)
29AQI (US)
29AQI (US)
28AQI (US)
32AQI (US)
29AQI (US)
28AQI (US)
31AQI (US)
28AQI (US)
23AQI (US)
20AQI (US)
44AQI (US)
26AQI (US)
27AQI (US)
27AQI (US)
28AQI (US)
20AQI (US)
17AQI (US)
22AQI (US)
23AQI (US)
23AQI (US)
24AQI (US)
21AQI (US)
27AQI (US)
28AQI (US)
27AQI (US)
27AQI (US)
27AQI (US)
26AQI (US)
37AQI (US)
35AQI (US)
45AQI (US)
16AQI (US)
22AQI (US)
26AQI (US)
35AQI (US)
29AQI (US)
26AQI (US)
28AQI (US)
22AQI (US)
24AQI (US)
28AQI (US)
31AQI (US)
33AQI (US)
44AQI (US)
21AQI (US)
30AQI (US)
20AQI (US)
16AQI (US)
13AQI (US)
18AQI (US)
26AQI (US)
35AQI (US)
26AQI (US)
26AQI (US)
22AQI (US)
24AQI (US)
29AQI (US)
17AQI (US)
16AQI (US)
16AQI (US)
22AQI (US)
18AQI (US)
15AQI (US)
23AQI (US)
34AQI (US)
32AQI (US)
23AQI (US)
33AQI (US)
24AQI (US)
15AQI (US)
21AQI (US)
32AQI (US)
32AQI (US)
25AQI (US)
22AQI (US)
21AQI (US)
21AQI (US)
20AQI (US)
16AQI (US)
20AQI (US)
18AQI (US)
16AQI (US)
18AQI (US)
34AQI (US)
32AQI (US)
31AQI (US)
35AQI (US)
23AQI (US)
36AQI (US)
27AQI (US)
26AQI (US)
29AQI (US)
26AQI (US)
16AQI (US)
31AQI (US)
58AQI (US)
77AQI (US)
92AQI (US)
111AQI (US)
103AQI (US)
96AQI (US)
87AQI (US)
81AQI (US)
58AQI (US)
145AQI (US)
168AQI (US)
152AQI (US)
154AQI (US)
119AQI (US)
115AQI (US)
85AQI (US)
110AQI (US)
108AQI (US)
132AQI (US)
98AQI (US)
102AQI (US)
134AQI (US)
149AQI (US)
97AQI (US)
93AQI (US)
103AQI (US)
36AQI (US)
33AQI (US)
30AQI (US)
27AQI (US)
27AQI (US)
23AQI (US)
66AQI (US)
110AQI (US)
No. of days
202639AQI (US)
Highest AQI (US) recorded in
August110AQI (US)
Lowest AQI (US) recorded in
June23AQI (US)
202543AQI (US)
Highest AQI (US) recorded in
January57AQI (US)
Lowest AQI (US) recorded in
May32AQI (US)
202445AQI (US)
Highest AQI (US) recorded in
December58AQI (US)
Lowest AQI (US) recorded in
January18AQI (US)
202318AQI (US)
Highest AQI (US) recorded in
November22AQI (US)
Lowest AQI (US) recorded in
December17AQI (US)
202240AQI (US)
Highest AQI (US) recorded in
September64AQI (US)
Lowest AQI (US) recorded in
June27AQI (US)
202142AQI (US)
Highest AQI (US) recorded in
August64AQI (US)
Lowest AQI (US) recorded in
April25AQI (US)
202040AQI (US)
Highest AQI (US) recorded in
September71AQI (US)
Lowest AQI (US) recorded in
June23AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Boise's annual 2026 AQI (US) (39) shows an average percentage change of 13.6% (worsened AQI (US)) compared to previous years: 2020 (40), 2021 (42), 2022 (40), 2023 (18), 2024 (45), 2025 (43).