Fredericton, New Brunswick, Canada 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
Fredericton, New Brunswick, Canada
AQI Trends: Highest and Lowest
Same Day Analysis (27th September ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 18 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 27th Sep - 28th Sep 2025
Fredericton, New Brunswick, Canada
7 AM27th Sep 2025
7 PM
6 AM28th Sep 2025
26AQI
17AQI
28AQI
17AQI
In the last 24 hours,
Fredericton's AQI reached its highest point of 28 at 2 AM during the Night, while the lowest point, 17, was recorded at 10 PM during the Night between 27th Sep and 28th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Fredericton, New Brunswick, Canada
--°C/°C
15°C7/19°C
18°C11/25°C
18°C7/27°C
19°C8/28°C
19°C11/27°C
16°C11/26°C
17°C11/22°C
19°C16/22°C
15°C14/16°C
16°C12/21°C
14°C2/23°C
14°C2/23°C
15°C3/26°C
15°C8/23°C
13°C4/21°C
16°C9/24°C
16°C7/25°C
16°C6/25°C
17°C5/27°C
17°C11/25°C
16°C10/22°C
12°C6/19°C
11°C1/21°C
13°C3/25°C
16°C10/22°C
16°C11/22°C
13°C4/22°C
20°C15/27°C
15°C10/23°C
15°C6/28°C
21AQI
20AQI
21AQI
20AQI
2025 Days Vs Air Quality
Fredericton, New Brunswick, Canada
97%
180
3%
5
Total number of days with different AQI categories in last 272 days in 2025 (93 days remaining)
Under WHO’s Safe Air Quality Limits: 97%
Health Risk Level:
Very Low
In 2025, 97% of 272 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
Fredericton, New Brunswick, Canada
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
18AQI
22AQI
16AQI
22AQI
21AQI
28AQI
17AQI
21AQI
21AQI
15AQI
14AQI
16AQI
19AQI
17AQI
15AQI
13AQI
12AQI
10AQI
10AQI
11AQI
11AQI
12AQI
12AQI
10AQI
10AQI
12AQI
17AQI
20AQI
15AQI
17AQI
18AQI
15AQI
18AQI
25AQI
23AQI
15AQI
20AQI
21AQI
20AQI
16AQI
20AQI
16AQI
15AQI
16AQI
14AQI
14AQI
19AQI
19AQI
22AQI
28AQI
30AQI
22AQI
15AQI
13AQI
13AQI
17AQI
21AQI
19AQI
11AQI
12AQI
18AQI
26AQI
27AQI
31AQI
21AQI
23AQI
23AQI
20AQI
24AQI
29AQI
36AQI
45AQI
48AQI
45AQI
49AQI
44AQI
30AQI
54AQI
33AQI
24AQI
29AQI
28AQI
26AQI
19AQI
17AQI
22AQI
19AQI
24AQI
30AQI
38AQI
41AQI
20AQI
20AQI
23AQI
17AQI
22AQI
28AQI
25AQI
32AQI
32AQI
21AQI
28AQI
40AQI
22AQI
22AQI
28AQI
25AQI
23AQI
21AQI
21AQI
26AQI
38AQI
36AQI
18AQI
29AQI
28AQI
23AQI
16AQI
30AQI
26AQI
33AQI
43AQI
46AQI
54AQI
49AQI
50AQI
50AQI
24AQI
22AQI
48AQI
71AQI
36AQI
20AQI
27AQI
35AQI
36AQI
33AQI
46AQI
54AQI
57AQI
47AQI
27AQI
23AQI
24AQI
14AQI
15AQI
17AQI
22AQI
24AQI
26AQI
29AQI
24AQI
16AQI
17AQI
19AQI
20AQI
18AQI
19AQI
25AQI
28AQI
29AQI
24AQI
22AQI
25AQI
23AQI
19AQI
18AQI
21AQI
22AQI
18AQI
18AQI
18AQI
21AQI
23AQI
29AQI
20AQI
17AQI
14AQI
16AQI
15AQI
16AQI
16AQI
17AQI
16AQI
18AQI
20AQI
16AQI
19AQI
30AQI
31AQI
29AQI
20AQI
No. of days
202524AQI
Highest AQI recorded in
July31AQI
Lowest AQI recorded in
April16AQI
Most & Least Polluted Years Over the Last 1 Years
Fredericton's annual 2025 AQI (24) shows an average percentage change of NaN% (improved AQI) compared to previous years: .