Blanchardstown, Dunboyne, Meath, Ireland Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
September Air Quality Analysis
Blanchardstown, Dunboyne, Meath, Ireland
AQI Trends: Highest and Lowest
Same Day Analysis (18th September ):
On this day, AQI across the 4 years varied significantly: 2025 ranks 4th highest AQI at 19 of Good air quality, showing improvement over 2024, 2023 and 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 18th Sep - 19th Sep 2025
Blanchardstown, Dunboyne, Meath, Ireland
6 AM18th Sep 2025
8 PM
5 AM19th Sep 2025
21AQI
18AQI
20AQI
18AQI
In the last 24 hours,
Blanchardstown's AQI reached its highest point of 21 at 11 AM during the Day, while the lowest point, 18, was recorded at 5 AM during the Night between 18th Sep and 19th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Blanchardstown, Dunboyne, Meath, Ireland
14°C9/16°C
14°C8/19°C
15°C10/20°C
17°C14/20°C
17°C13/21°C
18°C13/23°C
15°C12/19°C
14°C11/18°C
13°C12/16°C
14°C12/17°C
14°C10/18°C
14°C12/18°C
13°C10/16°C
13°C8/17°C
13°C9/16°C
12°C8/17°C
13°C9/17°C
16°C11/19°C
15°C11/18°C
11°C7/16°C
14°C10/16°C
13°C10/17°C
11°C10/13°C
11°C8/14°C
10°C8/14°C
11°C7/16°C
12°C11/13°C
12°C9/15°C
15°C11/18°C
14°C9/18°C
--°C/°C
20AQI
19AQI
21AQI
19AQI
2025 Days Vs Air Quality
Blanchardstown, Dunboyne, Meath, Ireland
90%
234
10%
27
Total number of days with different AQI categories in last 262 days in 2025 (103 days remaining)
Under WHO’s Safe Air Quality Limits: 90%
Health Risk Level:
Very Low
In 2025, 90% of 262 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
Blanchardstown, Dunboyne, Meath, Ireland
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
27AQI
37AQI
41AQI
37AQI
29AQI
19AQI
21AQI
38AQI
69AQI
60AQI
32AQI
54AQI
27AQI
18AQI
23AQI
45AQI
27AQI
35AQI
46AQI
52AQI
42AQI
33AQI
30AQI
24AQI
23AQI
21AQI
29AQI
33AQI
24AQI
27AQI
31AQI
58AQI
26AQI
26AQI
20AQI
22AQI
52AQI
47AQI
33AQI
38AQI
49AQI
36AQI
46AQI
52AQI
51AQI
40AQI
39AQI
54AQI
63AQI
57AQI
23AQI
27AQI
25AQI
26AQI
29AQI
22AQI
22AQI
25AQI
45AQI
28AQI
37AQI
23AQI
23AQI
22AQI
37AQI
39AQI
49AQI
66AQI
78AQI
49AQI
25AQI
26AQI
35AQI
38AQI
29AQI
21AQI
38AQI
61AQI
68AQI
62AQI
55AQI
23AQI
22AQI
24AQI
34AQI
19AQI
19AQI
24AQI
38AQI
48AQI
32AQI
35AQI
48AQI
64AQI
55AQI
41AQI
40AQI
49AQI
60AQI
51AQI
56AQI
54AQI
32AQI
15AQI
17AQI
14AQI
17AQI
22AQI
29AQI
53AQI
28AQI
20AQI
18AQI
36AQI
26AQI
25AQI
14AQI
16AQI
27AQI
40AQI
54AQI
35AQI
20AQI
16AQI
14AQI
17AQI
20AQI
24AQI
26AQI
30AQI
28AQI
28AQI
33AQI
26AQI
27AQI
24AQI
26AQI
26AQI
26AQI
26AQI
25AQI
20AQI
23AQI
19AQI
15AQI
16AQI
14AQI
15AQI
14AQI
14AQI
14AQI
15AQI
18AQI
17AQI
20AQI
16AQI
14AQI
14AQI
21AQI
50AQI
36AQI
31AQI
28AQI
26AQI
23AQI
20AQI
21AQI
28AQI
23AQI
25AQI
23AQI
30AQI
30AQI
21AQI
18AQI
15AQI
14AQI
16AQI
16AQI
16AQI
17AQI
15AQI
16AQI
15AQI
17AQI
16AQI
16AQI
16AQI
17AQI
16AQI
18AQI
20AQI
21AQI
23AQI
23AQI
22AQI
20AQI
21AQI
19AQI
17AQI
18AQI
19AQI
16AQI
27AQI
50AQI
57AQI
41AQI
32AQI
26AQI
20AQI
16AQI
17AQI
19AQI
19AQI
20AQI
22AQI
23AQI
27AQI
28AQI
23AQI
22AQI
23AQI
25AQI
38AQI
52AQI
46AQI
35AQI
37AQI
38AQI
34AQI
36AQI
27AQI
21AQI
22AQI
24AQI
25AQI
28AQI
27AQI
25AQI
21AQI
19AQI
18AQI
20AQI
21AQI
20AQI
20AQI
17AQI
17AQI
16AQI
21AQI
21AQI
19AQI
19AQI
18AQI
16AQI
16AQI
16AQI
17AQI
20AQI
18AQI
19AQI
34AQI
38AQI
37AQI
34AQI
23AQI
22AQI
22AQI
27AQI
18AQI
No. of days
202529AQI
Highest AQI recorded in
February38AQI
Lowest AQI recorded in
September18AQI
202433AQI
Highest AQI recorded in
January72AQI
Lowest AQI recorded in
July19AQI
202330AQI
Highest AQI recorded in
January37AQI
Lowest AQI recorded in
July17AQI
202232AQI
Highest AQI recorded in
March52AQI
Lowest AQI recorded in
August20AQI
Most & Least Polluted Years Over the Last 4 Years
Blanchardstown's annual 2025 AQI (29) shows an average percentage change of -8.8% (improved AQI) compared to previous years: 2022 (32), 2023 (30), 2024 (33).