Idaho City, Garden City, 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
Idaho City, Garden City, Idaho, United States
AQI Trends: Highest and Lowest
Same Day Analysis (11th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 4th highest AQI at 20 of Good air quality, showing improvement over 2024, 2023 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 12th Aug - 13th Aug 2025
Idaho City, Garden City, Idaho, United States
6 AM12th Aug 2025
9 PM
5 AM13th Aug 2025
30AQI
16AQI
45AQI
20AQI
In the last 24 hours,
Idaho City's AQI reached its highest point of 45 at 1 AM during the Night, while the lowest point, 16, was recorded at 6 PM during the Day between 12th Aug and 13th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Idaho City, Garden City, Idaho, United States
25°C17/32°C
23°C17/28°C
21°C12/27°C
23°C13/30°C
24°C16/31°C
22°C17/27°C
21°C14/26°C
18°C13/21°C
19°C12/26°C
20°C12/27°C
22°C12/29°C
23°C14/29°C
23°C14/29°C
22°C13/28°C
24°C14/31°C
23°C16/29°C
23°C13/31°C
21°C14/30°C
20°C14/26°C
21°C15/28°C
22°C14/29°C
20°C13/26°C
20°C12/26°C
21°C13/28°C
19°C15/23°C
17°C10/23°C
19°C11/26°C
21°C12/28°C
23°C14/30°C
25°C16/32°C
--°C/°C
31AQI
26AQI
33AQI
26AQI
2025 Days Vs Air Quality
Idaho City, Garden City, Idaho, United States
95%
212
5%
11
Total number of days with different AQI categories in last 225 days in 2025 (140 days remaining)
Under WHO’s Safe Air Quality Limits: 95%
Health Risk Level:
Very Low
In 2025, 95% 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
Idaho City, Garden City, Idaho, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
43AQI
52AQI
46AQI
40AQI
48AQI
41AQI
37AQI
42AQI
45AQI
39AQI
46AQI
38AQI
40AQI
41AQI
43AQI
45AQI
59AQI
61AQI
61AQI
60AQI
61AQI
51AQI
44AQI
45AQI
42AQI
44AQI
41AQI
49AQI
47AQI
43AQI
62AQI
59AQI
52AQI
36AQI
51AQI
37AQI
33AQI
31AQI
38AQI
39AQI
42AQI
38AQI
43AQI
37AQI
41AQI
18AQI
21AQI
35AQI
22AQI
26AQI
30AQI
22AQI
24AQI
31AQI
26AQI
20AQI
22AQI
21AQI
22AQI
26AQI
23AQI
24AQI
23AQI
21AQI
20AQI
18AQI
21AQI
19AQI
18AQI
19AQI
21AQI
25AQI
28AQI
25AQI
33AQI
29AQI
27AQI
26AQI
25AQI
27AQI
21AQI
27AQI
23AQI
26AQI
25AQI
31AQI
38AQI
24AQI
20AQI
27AQI
27AQI
27AQI
32AQI
34AQI
33AQI
34AQI
35AQI
30AQI
31AQI
43AQI
43AQI
35AQI
37AQI
33AQI
32AQI
32AQI
28AQI
25AQI
30AQI
29AQI
26AQI
27AQI
32AQI
31AQI
29AQI
31AQI
35AQI
32AQI
38AQI
31AQI
37AQI
32AQI
32AQI
28AQI
28AQI
24AQI
27AQI
31AQI
30AQI
31AQI
32AQI
33AQI
25AQI
26AQI
25AQI
29AQI
31AQI
29AQI
28AQI
26AQI
25AQI
25AQI
28AQI
30AQI
30AQI
32AQI
34AQI
30AQI
37AQI
29AQI
25AQI
28AQI
20AQI
17AQI
23AQI
24AQI
29AQI
31AQI
29AQI
32AQI
31AQI
31AQI
29AQI
30AQI
31AQI
26AQI
27AQI
27AQI
33AQI
30AQI
29AQI
29AQI
26AQI
24AQI
26AQI
29AQI
34AQI
32AQI
28AQI
29AQI
28AQI
33AQI
37AQI
36AQI
36AQI
36AQI
29AQI
24AQI
29AQI
27AQI
27AQI
29AQI
32AQI
36AQI
30AQI
29AQI
31AQI
32AQI
45AQI
39AQI
32AQI
29AQI
22AQI
27AQI
29AQI
31AQI
33AQI
32AQI
27AQI
26AQI
25AQI
36AQI
39AQI
36AQI
38AQI
30AQI
24AQI
26AQI
27AQI
20AQI
21AQI
24AQI
20AQI
47AQI
33AQI
25AQI
32AQI
29AQI
28AQI
31AQI
28AQI
No. of days
202532AQI
Highest AQI recorded in
January47AQI
Lowest AQI recorded in
March25AQI
202443AQI
Highest AQI recorded in
August75AQI
Lowest AQI recorded in
March24AQI
202341AQI
Highest AQI recorded in
September50AQI
Lowest AQI recorded in
April29AQI
202237AQI
Highest AQI recorded in
January53AQI
Lowest AQI recorded in
May25AQI
202142AQI
Highest AQI recorded in
August62AQI
Lowest AQI recorded in
May17AQI
202039AQI
Highest AQI recorded in
September65AQI
Lowest AQI recorded in
May16AQI
Most & Least Polluted Years Over the Last 6 Years
Idaho City's annual 2025 AQI (32) shows an average percentage change of -20.7% (improved AQI) compared to previous years: 2020 (39), 2021 (42), 2022 (37), 2023 (41), 2024 (43).