Port Laoise, Laois, Ireland Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
October Air Quality Analysis
Port Laoise, Laois, Ireland
AQI Trends: Highest and Lowest
Same Day Analysis (3rd October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 25 of Good air quality, showing improvement over 2024 and 2023 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 3rd Oct - 4th Oct 2025
Port Laoise, Laois, Ireland
7 AM3rd Oct 2025
7 PM
6 AM4th Oct 2025
45AQI
24AQI
54AQI
28AQI
In the last 24 hours,
Port Laoise's AQI reached its highest point of 54 at 12 AM during the Night, while the lowest point, 24, was recorded at 3 PM during the Day between 3rd Oct and 4th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Port Laoise, Laois, Ireland
12°C8/17°C
13°C9/17°C
15°C11/18°C
15°C9/17°C
11°C7/17°C
13°C11/17°C
12°C10/16°C
11°C9/12°C
10°C8/13°C
10°C8/13°C
11°C7/17°C
12°C11/14°C
12°C8/15°C
15°C11/18°C
13°C8/18°C
14°C11/15°C
10°C6/14°C
8°C4/12°C
8°C3/13°C
9°C4/14°C
10°C6/15°C
10°C6/16°C
11°C6/16°C
11°C7/14°C
10°C7/15°C
11°C7/16°C
13°C9/16°C
14°C12/17°C
14°C12/15°C
12°C9/17°C
--°C/°C
21AQI
19AQI
23AQI
20AQI
2025 Days Vs Air Quality
Port Laoise, Laois, Ireland
89%
246
11%
30
Total number of days with different AQI categories in last 277 days in 2025 (88 days remaining)
Under WHO’s Safe Air Quality Limits: 89%
Health Risk Level:
Low
In 2025, 89% of 277 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
Port Laoise, Laois, Ireland
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
26AQI
47AQI
62AQI
67AQI
43AQI
23AQI
23AQI
40AQI
53AQI
56AQI
39AQI
49AQI
29AQI
20AQI
24AQI
33AQI
30AQI
31AQI
39AQI
50AQI
55AQI
52AQI
43AQI
37AQI
36AQI
36AQI
32AQI
35AQI
29AQI
30AQI
40AQI
56AQI
27AQI
39AQI
25AQI
31AQI
55AQI
48AQI
45AQI
49AQI
53AQI
40AQI
52AQI
56AQI
59AQI
53AQI
43AQI
62AQI
61AQI
59AQI
28AQI
36AQI
30AQI
39AQI
35AQI
36AQI
37AQI
31AQI
45AQI
40AQI
43AQI
31AQI
39AQI
30AQI
42AQI
38AQI
39AQI
58AQI
72AQI
52AQI
27AQI
29AQI
37AQI
49AQI
38AQI
24AQI
36AQI
64AQI
67AQI
53AQI
49AQI
21AQI
26AQI
28AQI
34AQI
24AQI
24AQI
33AQI
42AQI
40AQI
30AQI
38AQI
43AQI
56AQI
50AQI
38AQI
33AQI
41AQI
52AQI
54AQI
54AQI
54AQI
38AQI
17AQI
21AQI
16AQI
22AQI
19AQI
18AQI
36AQI
30AQI
24AQI
21AQI
21AQI
16AQI
20AQI
18AQI
21AQI
27AQI
37AQI
41AQI
26AQI
18AQI
17AQI
18AQI
18AQI
20AQI
25AQI
26AQI
29AQI
27AQI
22AQI
31AQI
26AQI
32AQI
26AQI
23AQI
24AQI
32AQI
34AQI
24AQI
20AQI
23AQI
21AQI
17AQI
18AQI
16AQI
14AQI
14AQI
15AQI
15AQI
17AQI
18AQI
21AQI
21AQI
16AQI
14AQI
14AQI
31AQI
54AQI
35AQI
25AQI
27AQI
28AQI
26AQI
22AQI
24AQI
32AQI
24AQI
21AQI
25AQI
36AQI
35AQI
21AQI
18AQI
15AQI
15AQI
16AQI
15AQI
16AQI
16AQI
15AQI
16AQI
14AQI
17AQI
16AQI
16AQI
16AQI
17AQI
16AQI
17AQI
18AQI
20AQI
20AQI
21AQI
18AQI
18AQI
17AQI
16AQI
16AQI
17AQI
16AQI
15AQI
20AQI
48AQI
51AQI
32AQI
27AQI
22AQI
17AQI
15AQI
16AQI
19AQI
20AQI
20AQI
22AQI
23AQI
28AQI
27AQI
21AQI
23AQI
25AQI
27AQI
44AQI
53AQI
41AQI
36AQI
41AQI
41AQI
34AQI
41AQI
29AQI
23AQI
23AQI
24AQI
23AQI
26AQI
27AQI
24AQI
20AQI
18AQI
17AQI
19AQI
19AQI
20AQI
18AQI
17AQI
17AQI
16AQI
20AQI
21AQI
19AQI
19AQI
19AQI
17AQI
16AQI
17AQI
17AQI
19AQI
17AQI
18AQI
16AQI
17AQI
16AQI
16AQI
20AQI
19AQI
22AQI
21AQI
21AQI
23AQI
26AQI
25AQI
25AQI
35AQI
25AQI
39AQI
44AQI
40AQI
32AQI
23AQI
23AQI
20AQI
28AQI
19AQI
28AQI
No. of days
202530AQI
Highest AQI recorded in
February44AQI
Lowest AQI recorded in
September19AQI
202427AQI
Highest AQI recorded in
November41AQI
Lowest AQI recorded in
July15AQI
202324AQI
Highest AQI recorded in
April30AQI
Lowest AQI recorded in
August13AQI
202231AQI
Highest AQI recorded in
January50AQI
Lowest AQI recorded in
July16AQI
202127AQI
Highest AQI recorded in
December39AQI
Lowest AQI recorded in
August22AQI
Most & Least Polluted Years Over the Last 5 Years
Port Laoise's annual 2025 AQI (30) shows an average percentage change of 9.3% (worsened AQI) compared to previous years: 2021 (27), 2022 (31), 2023 (24), 2024 (27).