Roscommon Town, Ros Comain, Roscommon, 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
Roscommon Town, Ros Comain, Roscommon, Ireland
AQI Trends: Highest and Lowest
Same Day Analysis (21st September ):
On this day, AQI across the 4 years varied significantly: 2025 ranks 3rd highest AQI at 21 of Good air quality, showing improvement over 2024 and 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 21st Sep - 22nd Sep 2025
Roscommon Town, Ros Comain, Roscommon, Ireland
6 AM21st Sep 2025
8 PM
5 AM22nd Sep 2025
19AQI
16AQI
20AQI
18AQI
In the last 24 hours,
Roscommon Town's AQI reached its highest point of 20 at 3 AM during the Night, while the lowest point, undefined, was recorded at 5 AM during the Night between 21st Sep and 22nd Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Roscommon Town, Ros Comain, Roscommon, Ireland
17°C15/19°C
17°C12/22°C
17°C13/24°C
14°C11/17°C
13°C11/16°C
13°C11/15°C
13°C11/17°C
13°C11/17°C
14°C12/16°C
13°C10/15°C
13°C9/16°C
13°C10/15°C
12°C9/17°C
13°C10/17°C
15°C11/18°C
14°C9/17°C
11°C7/15°C
13°C11/18°C
12°C10/15°C
11°C10/13°C
11°C7/14°C
11°C8/14°C
11°C8/15°C
12°C11/14°C
12°C8/15°C
14°C11/16°C
14°C9/18°C
13°C10/15°C
10°C7/14°C
8°C5/12°C
--°C/°C
21AQI
20AQI
21AQI
20AQI
2025 Days Vs Air Quality
Roscommon Town, Ros Comain, Roscommon, Ireland
86%
227
14%
37
Total number of days with different AQI categories in last 265 days in 2025 (100 days remaining)
Under WHO’s Safe Air Quality Limits: 86%
Health Risk Level:
Low
In 2025, 86% of 265 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
Roscommon Town, Ros Comain, Roscommon, Ireland
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
24AQI
33AQI
55AQI
59AQI
47AQI
21AQI
20AQI
50AQI
68AQI
72AQI
47AQI
65AQI
26AQI
19AQI
25AQI
36AQI
27AQI
29AQI
39AQI
51AQI
52AQI
38AQI
36AQI
28AQI
23AQI
27AQI
29AQI
30AQI
23AQI
30AQI
41AQI
53AQI
23AQI
28AQI
22AQI
29AQI
62AQI
52AQI
49AQI
52AQI
63AQI
51AQI
58AQI
60AQI
62AQI
50AQI
40AQI
63AQI
63AQI
61AQI
24AQI
33AQI
26AQI
30AQI
36AQI
23AQI
23AQI
26AQI
44AQI
30AQI
51AQI
24AQI
29AQI
23AQI
44AQI
38AQI
46AQI
69AQI
75AQI
44AQI
23AQI
26AQI
26AQI
54AQI
37AQI
28AQI
43AQI
72AQI
79AQI
58AQI
60AQI
22AQI
25AQI
23AQI
48AQI
22AQI
21AQI
28AQI
44AQI
34AQI
29AQI
41AQI
48AQI
64AQI
56AQI
40AQI
42AQI
52AQI
58AQI
57AQI
55AQI
55AQI
30AQI
15AQI
19AQI
15AQI
22AQI
23AQI
21AQI
50AQI
28AQI
21AQI
20AQI
26AQI
16AQI
16AQI
10AQI
14AQI
34AQI
46AQI
48AQI
30AQI
24AQI
18AQI
18AQI
41AQI
39AQI
29AQI
34AQI
36AQI
36AQI
23AQI
43AQI
32AQI
32AQI
29AQI
29AQI
27AQI
27AQI
31AQI
28AQI
25AQI
25AQI
21AQI
17AQI
18AQI
15AQI
14AQI
15AQI
21AQI
18AQI
18AQI
22AQI
22AQI
24AQI
18AQI
17AQI
17AQI
25AQI
61AQI
43AQI
35AQI
27AQI
29AQI
29AQI
25AQI
26AQI
35AQI
28AQI
25AQI
28AQI
34AQI
34AQI
24AQI
22AQI
18AQI
16AQI
17AQI
17AQI
21AQI
19AQI
15AQI
15AQI
15AQI
19AQI
17AQI
16AQI
16AQI
17AQI
17AQI
17AQI
18AQI
20AQI
22AQI
22AQI
19AQI
19AQI
21AQI
19AQI
17AQI
17AQI
18AQI
17AQI
23AQI
47AQI
53AQI
37AQI
32AQI
25AQI
19AQI
15AQI
16AQI
19AQI
21AQI
20AQI
22AQI
24AQI
29AQI
29AQI
23AQI
27AQI
26AQI
25AQI
43AQI
53AQI
39AQI
33AQI
37AQI
38AQI
34AQI
36AQI
27AQI
22AQI
22AQI
24AQI
24AQI
27AQI
30AQI
26AQI
20AQI
19AQI
17AQI
21AQI
22AQI
22AQI
18AQI
16AQI
17AQI
16AQI
21AQI
21AQI
19AQI
18AQI
18AQI
16AQI
16AQI
17AQI
18AQI
20AQI
18AQI
23AQI
21AQI
24AQI
21AQI
38AQI
43AQI
40AQI
34AQI
27AQI
26AQI
21AQI
28AQI
19AQI
No. of days
202531AQI
Highest AQI recorded in
February43AQI
Lowest AQI recorded in
September19AQI
202426AQI
Highest AQI recorded in
January41AQI
Lowest AQI recorded in
February3AQI
202327AQI
Highest AQI recorded in
January39AQI
Lowest AQI recorded in
July16AQI
202230AQI
Highest AQI recorded in
March53AQI
Lowest AQI recorded in
August16AQI
Most & Least Polluted Years Over the Last 4 Years
Roscommon Town's annual 2025 AQI (31) shows an average percentage change of 13.05% (worsened AQI) compared to previous years: 2022 (30), 2023 (27), 2024 (26).