Granite City, 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
Granite City, Illinois, United States
AQI Trends: Highest and Lowest
Same Day Analysis (14th August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 2nd highest AQI at 48 of Good air quality, showing improvement over 2025 on the same day.
Day & Night AQI Trend: 14th Aug - 15th Aug 2026
Granite City, Illinois, United States
6 AM14th Aug 2026
8 PM
5 AM15th Aug 2026
51AQI
43AQI
56AQI
51AQI
In the last 24 hours,
Granite City's AQI reached its highest point of 56 at 12 AM during the Night, while the lowest point, 43, was recorded at 7 AM during the Day between 14th Aug and 15th Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Granite City, Illinois, United States
29°C23/36°C
30°C24/36°C
29°C26/33°C
30°C23/38°C
31°C25/39°C
24°C19/30°C
23°C18/30°C
23°C17/30°C
27°C21/35°C
32°C25/41°C
33°C26/41°C
30°C25/38°C
27°C20/35°C
27°C19/35°C
24°C22/28°C
22°C20/24°C
23°C20/30°C
25°C18/32°C
26°C19/33°C
27°C20/36°C
23°C21/28°C
27°C20/34°C
28°C22/36°C
29°C23/38°C
31°C25/39°C
32°C26/40°C
31°C26/38°C
31°C24/40°C
31°C26/38°C
32°C27/39°C
51AQI
47AQI
49AQI
49AQI
2026 Days Vs Air Quality
Granite City, Illinois, United States
96%
213
4%
9
0.4%
1
Total number of days with different AQI categories in last 227 days in 2026 (138 days remaining)
Under WHO’s Safe Air Quality Limits: 96%
Health Risk Level:
Very Low
In 2026, 96% of 227 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
Granite City, Illinois, United States
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
51AQI (US)
46AQI (US)
37AQI (US)
57AQI (US)
38AQI (US)
40AQI (US)
43AQI (US)
39AQI (US)
23AQI (US)
26AQI (US)
14AQI (US)
30AQI (US)
28AQI (US)
11AQI (US)
16AQI (US)
18AQI (US)
18AQI (US)
18AQI (US)
16AQI (US)
28AQI (US)
39AQI (US)
35AQI (US)
37AQI (US)
24AQI (US)
30AQI (US)
33AQI (US)
24AQI (US)
25AQI (US)
35AQI (US)
50AQI (US)
27AQI (US)
29AQI (US)
38AQI (US)
30AQI (US)
28AQI (US)
46AQI (US)
34AQI (US)
30AQI (US)
22AQI (US)
40AQI (US)
39AQI (US)
27AQI (US)
40AQI (US)
39AQI (US)
43AQI (US)
37AQI (US)
37AQI (US)
43AQI (US)
45AQI (US)
37AQI (US)
27AQI (US)
25AQI (US)
22AQI (US)
26AQI (US)
41AQI (US)
41AQI (US)
32AQI (US)
40AQI (US)
27AQI (US)
27AQI (US)
37AQI (US)
30AQI (US)
35AQI (US)
26AQI (US)
20AQI (US)
32AQI (US)
39AQI (US)
32AQI (US)
28AQI (US)
34AQI (US)
22AQI (US)
29AQI (US)
22AQI (US)
24AQI (US)
26AQI (US)
29AQI (US)
22AQI (US)
45AQI (US)
48AQI (US)
38AQI (US)
39AQI (US)
31AQI (US)
26AQI (US)
42AQI (US)
48AQI (US)
22AQI (US)
18AQI (US)
24AQI (US)
38AQI (US)
37AQI (US)
24AQI (US)
20AQI (US)
20AQI (US)
28AQI (US)
28AQI (US)
29AQI (US)
26AQI (US)
43AQI (US)
39AQI (US)
32AQI (US)
26AQI (US)
36AQI (US)
28AQI (US)
31AQI (US)
29AQI (US)
21AQI (US)
20AQI (US)
20AQI (US)
18AQI (US)
28AQI (US)
39AQI (US)
20AQI (US)
15AQI (US)
23AQI (US)
23AQI (US)
20AQI (US)
20AQI (US)
25AQI (US)
19AQI (US)
16AQI (US)
27AQI (US)
38AQI (US)
31AQI (US)
21AQI (US)
25AQI (US)
28AQI (US)
23AQI (US)
20AQI (US)
32AQI (US)
42AQI (US)
22AQI (US)
44AQI (US)
48AQI (US)
55AQI (US)
50AQI (US)
48AQI (US)
44AQI (US)
39AQI (US)
37AQI (US)
48AQI (US)
39AQI (US)
38AQI (US)
19AQI (US)
14AQI (US)
19AQI (US)
20AQI (US)
22AQI (US)
18AQI (US)
19AQI (US)
17AQI (US)
21AQI (US)
31AQI (US)
30AQI (US)
22AQI (US)
30AQI (US)
21AQI (US)
22AQI (US)
28AQI (US)
20AQI (US)
13AQI (US)
17AQI (US)
15AQI (US)
15AQI (US)
21AQI (US)
32AQI (US)
22AQI (US)
16AQI (US)
18AQI (US)
21AQI (US)
18AQI (US)
15AQI (US)
23AQI (US)
17AQI (US)
16AQI (US)
19AQI (US)
29AQI (US)
35AQI (US)
59AQI (US)
50AQI (US)
37AQI (US)
28AQI (US)
25AQI (US)
28AQI (US)
21AQI (US)
22AQI (US)
30AQI (US)
32AQI (US)
27AQI (US)
22AQI (US)
17AQI (US)
24AQI (US)
23AQI (US)
28AQI (US)
23AQI (US)
42AQI (US)
49AQI (US)
52AQI (US)
110AQI (US)
53AQI (US)
45AQI (US)
42AQI (US)
40AQI (US)
48AQI (US)
52AQI (US)
54AQI (US)
53AQI (US)
43AQI (US)
44AQI (US)
46AQI (US)
40AQI (US)
43AQI (US)
48AQI (US)
50AQI (US)
50AQI (US)
42AQI (US)
47AQI (US)
43AQI (US)
47AQI (US)
50AQI (US)
47AQI (US)
48AQI (US)
48AQI (US)
48AQI (US)
31AQI (US)
34AQI (US)
31AQI (US)
26AQI (US)
32AQI (US)
23AQI (US)
39AQI (US)
47AQI (US)
No. of days
202632AQI (US)
Highest AQI (US) recorded in
August47AQI (US)
Lowest AQI (US) recorded in
June23AQI (US)
202541AQI (US)
Highest AQI (US) recorded in
June49AQI (US)
Lowest AQI (US) recorded in
January30AQI (US)
202436AQI (US)
Highest AQI (US) recorded in
February45AQI (US)
Lowest AQI (US) recorded in
November26AQI (US)
202343AQI (US)
Highest AQI (US) recorded in
June56AQI (US)
Lowest AQI (US) recorded in
December40AQI (US)
202238AQI (US)
Highest AQI (US) recorded in
July47AQI (US)
Lowest AQI (US) recorded in
September32AQI (US)
202146AQI (US)
Highest AQI (US) recorded in
July55AQI (US)
Lowest AQI (US) recorded in
November39AQI (US)
202039AQI (US)
Highest AQI (US) recorded in
June42AQI (US)
Lowest AQI (US) recorded in
May28AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Granite City's annual 2026 AQI (US) (32) shows an average percentage change of -20.4% (improved AQI (US)) compared to previous years: 2020 (39), 2021 (46), 2022 (38), 2023 (43), 2024 (36), 2025 (41).