Fountain Hills, Arizona, 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
Fountain Hills, Arizona, United States
AQI Trends: Highest and Lowest
Same Day Analysis (11th August ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 62 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 10th Aug - 11th Aug 2025
Fountain Hills, Arizona, United States
5 AM10th Aug 2025
7 PM
4 AM11th Aug 2025
99AQI
57AQI
71AQI
60AQI
In the last 24 hours,
Fountain Hills's AQI reached its highest point of 99 at 6 AM during the Day, while the lowest point, 57, was recorded at 5 PM during the Day between 10th Aug and 11th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Fountain Hills, Arizona, United States
--°C/°C
35°C26/41°C
34°C24/40°C
33°C28/40°C
30°C24/36°C
31°C25/38°C
34°C25/41°C
33°C23/41°C
32°C28/38°C
31°C23/38°C
30°C25/37°C
31°C23/38°C
31°C19/40°C
31°C19/41°C
31°C20/41°C
32°C20/42°C
33°C21/43°C
33°C22/41°C
33°C21/42°C
34°C23/42°C
35°C25/42°C
35°C24/44°C
33°C20/43°C
34°C22/43°C
35°C24/44°C
36°C26/46°C
37°C25/47°C
34°C24/43°C
34°C27/42°C
34°C26/41°C
34°C27/41°C
46AQI
42AQI
45AQI
41AQI
2025 Days Vs Air Quality
Fountain Hills, Arizona, United States
91%
126
9%
12
0.7%
1
Total number of days with different AQI categories in last 224 days in 2025 (141 days remaining)
Under WHO’s Safe Air Quality Limits: 91%
Health Risk Level:
Very Low
In 2025, 91% of 224 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
Fountain Hills, Arizona, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
30AQI
29AQI
31AQI
40AQI
43AQI
32AQI
37AQI
49AQI
24AQI
24AQI
23AQI
25AQI
29AQI
42AQI
41AQI
41AQI
43AQI
41AQI
38AQI
43AQI
35AQI
33AQI
36AQI
34AQI
36AQI
27AQI
29AQI
31AQI
32AQI
29AQI
32AQI
33AQI
27AQI
25AQI
30AQI
28AQI
31AQI
35AQI
34AQI
34AQI
33AQI
31AQI
29AQI
32AQI
32AQI
41AQI
43AQI
44AQI
36AQI
39AQI
35AQI
34AQI
44AQI
44AQI
41AQI
40AQI
39AQI
46AQI
41AQI
42AQI
39AQI
40AQI
40AQI
42AQI
41AQI
41AQI
49AQI
46AQI
31AQI
31AQI
30AQI
27AQI
30AQI
35AQI
33AQI
32AQI
35AQI
38AQI
40AQI
44AQI
41AQI
38AQI
40AQI
52AQI
48AQI
46AQI
42AQI
44AQI
43AQI
42AQI
46AQI
45AQI
44AQI
43AQI
40AQI
40AQI
39AQI
113AQI
48AQI
42AQI
45AQI
50AQI
39AQI
37AQI
50AQI
37AQI
40AQI
52AQI
49AQI
47AQI
49AQI
45AQI
50AQI
35AQI
36AQI
35AQI
33AQI
41AQI
36AQI
30AQI
31AQI
27AQI
24AQI
27AQI
29AQI
33AQI
38AQI
66AQI
70AQI
41AQI
44AQI
53AQI
54AQI
53AQI
53AQI
51AQI
58AQI
64AQI
62AQI
34AQI
33AQI
38AQI
40AQI
42AQI
55AQI
No. of days
202540AQI
Highest AQI recorded in
August55AQI
Lowest AQI recorded in
April33AQI
Most & Least Polluted Years Over the Last 1 Years
Fountain Hills's annual 2025 AQI (40) shows an average percentage change of NaN% (improved AQI) compared to previous years: .