Fairfield, Iowa, 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
Fairfield, Iowa, United States
AQI Trends: Highest and Lowest
Same Day Analysis (15th August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 2nd highest AQI at 42 of Good air quality, showing improvement over 2025 on the same day.
Day & Night AQI Trend: 14th Aug - 15th Aug 2026
Fairfield, Iowa, United States
6 AM14th Aug 2026
8 PM
5 AM15th Aug 2026
56AQI
32AQI
54AQI
24AQI
In the last 24 hours,
Fairfield's AQI reached its highest point of 56 at 8 AM during the Day, while the lowest point, 24, was recorded at 12 AM during the Night between 14th Aug and 15th Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Fairfield, Iowa, United States
29°C22/35°C
29°C23/37°C
28°C21/34°C
28°C22/37°C
26°C21/31°C
22°C16/28°C
21°C13/29°C
20°C16/25°C
25°C20/33°C
31°C23/40°C
32°C25/38°C
29°C23/36°C
26°C20/33°C
26°C18/33°C
25°C20/30°C
21°C19/25°C
23°C16/30°C
23°C15/31°C
25°C18/34°C
22°C20/26°C
23°C20/27°C
24°C19/30°C
25°C20/31°C
27°C20/34°C
28°C23/35°C
29°C23/35°C
28°C24/33°C
27°C23/34°C
26°C22/32°C
28°C23/36°C
49AQI
44AQI
47AQI
45AQI
2026 Days Vs Air Quality
Fairfield, Iowa, United States
92%
207
8%
17
Total number of days with different AQI categories in last 227 days in 2026 (138 days remaining)
Under WHO’s Safe Air Quality Limits: 92%
Health Risk Level:
Very Low
In 2026, 92% 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
Fairfield, Iowa, United States
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
23AQI (US)
25AQI (US)
30AQI (US)
35AQI (US)
46AQI (US)
52AQI (US)
33AQI (US)
36AQI (US)
24AQI (US)
29AQI (US)
23AQI (US)
18AQI (US)
20AQI (US)
21AQI (US)
17AQI (US)
16AQI (US)
19AQI (US)
19AQI (US)
25AQI (US)
20AQI (US)
29AQI (US)
48AQI (US)
42AQI (US)
38AQI (US)
52AQI (US)
45AQI (US)
33AQI (US)
31AQI (US)
44AQI (US)
53AQI (US)
40AQI (US)
41AQI (US)
37AQI (US)
40AQI (US)
35AQI (US)
40AQI (US)
42AQI (US)
40AQI (US)
39AQI (US)
47AQI (US)
38AQI (US)
31AQI (US)
41AQI (US)
39AQI (US)
46AQI (US)
46AQI (US)
42AQI (US)
69AQI (US)
46AQI (US)
35AQI (US)
40AQI (US)
29AQI (US)
29AQI (US)
29AQI (US)
47AQI (US)
39AQI (US)
35AQI (US)
37AQI (US)
25AQI (US)
28AQI (US)
51AQI (US)
41AQI (US)
42AQI (US)
45AQI (US)
30AQI (US)
37AQI (US)
31AQI (US)
27AQI (US)
33AQI (US)
35AQI (US)
36AQI (US)
37AQI (US)
29AQI (US)
22AQI (US)
24AQI (US)
28AQI (US)
26AQI (US)
45AQI (US)
43AQI (US)
37AQI (US)
30AQI (US)
41AQI (US)
48AQI (US)
36AQI (US)
44AQI (US)
21AQI (US)
16AQI (US)
23AQI (US)
31AQI (US)
32AQI (US)
24AQI (US)
21AQI (US)
29AQI (US)
32AQI (US)
27AQI (US)
27AQI (US)
37AQI (US)
38AQI (US)
24AQI (US)
31AQI (US)
24AQI (US)
24AQI (US)
26AQI (US)
23AQI (US)
29AQI (US)
26AQI (US)
20AQI (US)
24AQI (US)
26AQI (US)
23AQI (US)
43AQI (US)
24AQI (US)
17AQI (US)
26AQI (US)
27AQI (US)
21AQI (US)
26AQI (US)
35AQI (US)
20AQI (US)
22AQI (US)
24AQI (US)
37AQI (US)
37AQI (US)
33AQI (US)
29AQI (US)
31AQI (US)
28AQI (US)
24AQI (US)
41AQI (US)
49AQI (US)
40AQI (US)
50AQI (US)
50AQI (US)
55AQI (US)
53AQI (US)
51AQI (US)
49AQI (US)
42AQI (US)
41AQI (US)
47AQI (US)
44AQI (US)
44AQI (US)
37AQI (US)
25AQI (US)
15AQI (US)
17AQI (US)
22AQI (US)
18AQI (US)
20AQI (US)
19AQI (US)
17AQI (US)
22AQI (US)
20AQI (US)
20AQI (US)
20AQI (US)
26AQI (US)
24AQI (US)
21AQI (US)
17AQI (US)
25AQI (US)
15AQI (US)
18AQI (US)
21AQI (US)
22AQI (US)
19AQI (US)
19AQI (US)
14AQI (US)
15AQI (US)
17AQI (US)
18AQI (US)
18AQI (US)
22AQI (US)
21AQI (US)
19AQI (US)
22AQI (US)
26AQI (US)
31AQI (US)
52AQI (US)
47AQI (US)
25AQI (US)
22AQI (US)
32AQI (US)
44AQI (US)
50AQI (US)
40AQI (US)
42AQI (US)
29AQI (US)
32AQI (US)
42AQI (US)
41AQI (US)
43AQI (US)
36AQI (US)
52AQI (US)
98AQI (US)
48AQI (US)
46AQI (US)
84AQI (US)
83AQI (US)
49AQI (US)
51AQI (US)
42AQI (US)
41AQI (US)
44AQI (US)
44AQI (US)
54AQI (US)
51AQI (US)
48AQI (US)
44AQI (US)
37AQI (US)
38AQI (US)
46AQI (US)
48AQI (US)
44AQI (US)
53AQI (US)
47AQI (US)
42AQI (US)
39AQI (US)
41AQI (US)
45AQI (US)
40AQI (US)
36AQI (US)
38AQI (US)
48AQI (US)
42AQI (US)
32AQI (US)
39AQI (US)
34AQI (US)
27AQI (US)
36AQI (US)
21AQI (US)
46AQI (US)
43AQI (US)
No. of days
202634AQI (US)
Highest AQI (US) recorded in
July46AQI (US)
Lowest AQI (US) recorded in
June21AQI (US)
202536AQI (US)
Highest AQI (US) recorded in
June48AQI (US)
Lowest AQI (US) recorded in
January28AQI (US)
202434AQI (US)
Highest AQI (US) recorded in
July39AQI (US)
Lowest AQI (US) recorded in
November29AQI (US)
202338AQI (US)
Highest AQI (US) recorded in
June63AQI (US)
Lowest AQI (US) recorded in
February26AQI (US)
202232AQI (US)
Highest AQI (US) recorded in
June39AQI (US)
Lowest AQI (US) recorded in
January27AQI (US)
202134AQI (US)
Highest AQI (US) recorded in
July49AQI (US)
Lowest AQI (US) recorded in
December27AQI (US)
202032AQI (US)
Highest AQI (US) recorded in
April44AQI (US)
Lowest AQI (US) recorded in
September26AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Fairfield's annual 2026 AQI (US) (34) shows an average percentage change of -0.5% (improved AQI (US)) compared to previous years: 2020 (32), 2021 (34), 2022 (32), 2023 (38), 2024 (34), 2025 (36).