Aurora, Illinois, 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
Aurora, Illinois, United States
AQI Trends: Highest and Lowest
Same Day Analysis (4th August ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 92 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 4th Aug - 5th Aug 2025
Aurora, Illinois, United States
5 AM4th Aug 2025
8 PM
4 AM5th Aug 2025
129AQI
56AQI
66AQI
60AQI
In the last 24 hours,
Aurora's AQI reached its highest point of 129 at 7 AM during the Day, while the lowest point, 56, was recorded at 4 PM during the Day between 4th Aug and 5th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Aurora, Illinois, United States
26°C21/32°C
24°C18/31°C
25°C18/32°C
23°C19/32°C
26°C17/34°C
27°C21/33°C
25°C21/29°C
23°C17/28°C
25°C16/33°C
27°C19/34°C
27°C22/33°C
21°C17/24°C
22°C14/31°C
24°C20/28°C
21°C19/22°C
23°C17/28°C
26°C19/32°C
26°C21/34°C
28°C23/35°C
25°C23/29°C
26°C22/29°C
28°C23/33°C
29°C23/34°C
29°C21/37°C
25°C21/29°C
23°C19/27°C
21°C16/26°C
21°C13/29°C
21°C14/29°C
23°C18/30°C
--°C/°C
56AQI
55AQI
54AQI
54AQI
2025 Days Vs Air Quality
Aurora, Illinois, United States
72%
94
27%
35
2%
2
Total number of days with different AQI categories in last 217 days in 2025 (148 days remaining)
Under WHO’s Safe Air Quality Limits: 72%
Health Risk Level:
Low
In 2025, 72% of 217 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
Aurora, Illinois, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
47AQI
43AQI
37AQI
33AQI
18AQI
27AQI
35AQI
27AQI
30AQI
22AQI
24AQI
27AQI
20AQI
35AQI
53AQI
49AQI
51AQI
39AQI
35AQI
21AQI
26AQI
38AQI
51AQI
40AQI
44AQI
20AQI
32AQI
26AQI
44AQI
28AQI
18AQI
28AQI
36AQI
33AQI
24AQI
33AQI
40AQI
17AQI
18AQI
23AQI
35AQI
41AQI
20AQI
24AQI
36AQI
25AQI
38AQI
36AQI
42AQI
51AQI
36AQI
24AQI
22AQI
20AQI
26AQI
20AQI
15AQI
22AQI
22AQI
20AQI
24AQI
25AQI
29AQI
36AQI
42AQI
44AQI
42AQI
43AQI
57AQI
55AQI
83AQI
76AQI
80AQI
74AQI
69AQI
61AQI
73AQI
80AQI
77AQI
66AQI
56AQI
56AQI
44AQI
30AQI
28AQI
37AQI
40AQI
45AQI
56AQI
39AQI
33AQI
46AQI
30AQI
24AQI
38AQI
30AQI
32AQI
53AQI
51AQI
52AQI
67AQI
46AQI
54AQI
66AQI
48AQI
47AQI
36AQI
28AQI
57AQI
72AQI
73AQI
43AQI
26AQI
22AQI
30AQI
26AQI
64AQI
70AQI
63AQI
52AQI
32AQI
26AQI
31AQI
37AQI
40AQI
48AQI
119AQI
110AQI
94AQI
90AQI
92AQI
36AQI
33AQI
29AQI
52AQI
49AQI
97AQI
No. of days
202542AQI
Highest AQI recorded in
August97AQI
Lowest AQI recorded in
May29AQI
Most & Least Polluted Years Over the Last 1 Years
Aurora's annual 2025 AQI (42) shows an average percentage change of NaN% (improved AQI) compared to previous years: .