Letterkenny, Lifford, Donegal, Ireland 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
Letterkenny, Lifford, Donegal, Ireland
AQI Trends: Highest and Lowest
Same Day Analysis (13th August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 2nd highest AQI at 35 of Good air quality, showing improvement over 2025 on the same day.
Day & Night AQI Trend: 13th Aug - 14th Aug 2026
Letterkenny, Lifford, Donegal, Ireland
5 AM13th Aug 2026
9 PM
4 AM14th Aug 2026
34AQI
27AQI
34AQI
25AQI
In the last 24 hours,
Letterkenny's AQI reached its highest point of 34 at 5 AM during the Night, while the lowest point, 25, was recorded at 3 AM during the Night between 13th Aug and 14th Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Letterkenny, Lifford, Donegal, Ireland
19°C12/26°C
15°C11/19°C
14°C11/18°C
14°C9/20°C
16°C13/19°C
15°C13/18°C
15°C11/20°C
15°C9/21°C
15°C8/21°C
15°C12/18°C
15°C13/17°C
15°C12/20°C
17°C13/19°C
14°C9/18°C
13°C8/17°C
12°C7/17°C
12°C7/19°C
12°C8/18°C
14°C11/21°C
16°C13/20°C
13°C10/14°C
13°C7/18°C
13°C7/18°C
13°C8/17°C
14°C8/17°C
13°C7/19°C
16°C9/23°C
19°C12/24°C
19°C16/23°C
16°C12/19°C
26AQI
23AQI
28AQI
25AQI
2026 Days Vs Air Quality
Letterkenny, Lifford, Donegal, Ireland
94%
209
6%
13
Total number of days with different AQI categories in last 226 days in 2026 (139 days remaining)
Under WHO’s Safe Air Quality Limits: 94%
Health Risk Level:
Very Low
In 2026, 94% of 226 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
Letterkenny, Lifford, Donegal, Ireland
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
41AQI (US)
38AQI (US)
48AQI (US)
55AQI (US)
51AQI (US)
27AQI (US)
43AQI (US)
55AQI (US)
75AQI (US)
92AQI (US)
18AQI (US)
25AQI (US)
39AQI (US)
31AQI (US)
46AQI (US)
62AQI (US)
62AQI (US)
62AQI (US)
34AQI (US)
47AQI (US)
24AQI (US)
34AQI (US)
42AQI (US)
44AQI (US)
36AQI (US)
40AQI (US)
32AQI (US)
34AQI (US)
39AQI (US)
42AQI (US)
33AQI (US)
62AQI (US)
56AQI (US)
31AQI (US)
36AQI (US)
43AQI (US)
35AQI (US)
34AQI (US)
42AQI (US)
50AQI (US)
29AQI (US)
28AQI (US)
29AQI (US)
41AQI (US)
60AQI (US)
18AQI (US)
24AQI (US)
42AQI (US)
39AQI (US)
38AQI (US)
36AQI (US)
32AQI (US)
31AQI (US)
32AQI (US)
30AQI (US)
28AQI (US)
27AQI (US)
30AQI (US)
31AQI (US)
27AQI (US)
37AQI (US)
44AQI (US)
39AQI (US)
38AQI (US)
24AQI (US)
28AQI (US)
28AQI (US)
30AQI (US)
26AQI (US)
37AQI (US)
38AQI (US)
31AQI (US)
28AQI (US)
27AQI (US)
29AQI (US)
29AQI (US)
29AQI (US)
42AQI (US)
50AQI (US)
56AQI (US)
55AQI (US)
35AQI (US)
29AQI (US)
32AQI (US)
23AQI (US)
24AQI (US)
29AQI (US)
29AQI (US)
32AQI (US)
30AQI (US)
26AQI (US)
27AQI (US)
24AQI (US)
23AQI (US)
27AQI (US)
27AQI (US)
25AQI (US)
25AQI (US)
22AQI (US)
25AQI (US)
27AQI (US)
27AQI (US)
28AQI (US)
25AQI (US)
25AQI (US)
26AQI (US)
24AQI (US)
25AQI (US)
24AQI (US)
20AQI (US)
21AQI (US)
24AQI (US)
27AQI (US)
25AQI (US)
24AQI (US)
21AQI (US)
20AQI (US)
22AQI (US)
26AQI (US)
25AQI (US)
24AQI (US)
26AQI (US)
24AQI (US)
25AQI (US)
22AQI (US)
18AQI (US)
25AQI (US)
24AQI (US)
22AQI (US)
23AQI (US)
21AQI (US)
29AQI (US)
36AQI (US)
39AQI (US)
33AQI (US)
33AQI (US)
33AQI (US)
35AQI (US)
31AQI (US)
36AQI (US)
47AQI (US)
34AQI (US)
30AQI (US)
24AQI (US)
25AQI (US)
21AQI (US)
21AQI (US)
24AQI (US)
21AQI (US)
20AQI (US)
16AQI (US)
16AQI (US)
22AQI (US)
21AQI (US)
18AQI (US)
21AQI (US)
17AQI (US)
20AQI (US)
20AQI (US)
22AQI (US)
18AQI (US)
20AQI (US)
21AQI (US)
22AQI (US)
18AQI (US)
22AQI (US)
20AQI (US)
18AQI (US)
17AQI (US)
20AQI (US)
21AQI (US)
19AQI (US)
23AQI (US)
41AQI (US)
23AQI (US)
18AQI (US)
21AQI (US)
18AQI (US)
16AQI (US)
20AQI (US)
23AQI (US)
15AQI (US)
7AQI (US)
7AQI (US)
24AQI (US)
15AQI (US)
20AQI (US)
23AQI (US)
27AQI (US)
26AQI (US)
26AQI (US)
27AQI (US)
24AQI (US)
27AQI (US)
34AQI (US)
31AQI (US)
25AQI (US)
30AQI (US)
24AQI (US)
34AQI (US)
25AQI (US)
26AQI (US)
26AQI (US)
13AQI (US)
12AQI (US)
14AQI (US)
15AQI (US)
18AQI (US)
22AQI (US)
31AQI (US)
31AQI (US)
34AQI (US)
25AQI (US)
20AQI (US)
26AQI (US)
26AQI (US)
23AQI (US)
20AQI (US)
24AQI (US)
26AQI (US)
27AQI (US)
35AQI (US)
44AQI (US)
36AQI (US)
33AQI (US)
25AQI (US)
28AQI (US)
20AQI (US)
22AQI (US)
27AQI (US)
No. of days
202630AQI (US)
Highest AQI (US) recorded in
January44AQI (US)
Lowest AQI (US) recorded in
June20AQI (US)
202538AQI (US)
Highest AQI (US) recorded in
December62AQI (US)
Lowest AQI (US) recorded in
September21AQI (US)
202437AQI (US)
Highest AQI (US) recorded in
January64AQI (US)
Lowest AQI (US) recorded in
July20AQI (US)
202336AQI (US)
Highest AQI (US) recorded in
November66AQI (US)
Lowest AQI (US) recorded in
July16AQI (US)
202239AQI (US)
Highest AQI (US) recorded in
December66AQI (US)
Lowest AQI (US) recorded in
June9AQI (US)
202135AQI (US)
Highest AQI (US) recorded in
December58AQI (US)
Lowest AQI (US) recorded in
August24AQI (US)
Most & Least Polluted Years Over the Last 6 Years
Letterkenny's annual 2026 AQI (US) (30) shows an average percentage change of -18.8% (improved AQI (US)) compared to previous years: 2021 (35), 2022 (39), 2023 (36), 2024 (37), 2025 (38).