Duncan College Street, Duncan, British Columbia, Canada Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
July Air Quality Analysis
Duncan College Street, Duncan, British Columbia, Canada
AQI Trends: Highest and Lowest
Same Day Analysis (3rd July ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 22 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: 2nd Jul - 3rd Jul 2025
Duncan College Street, Duncan, British Columbia, Canada
5 AM2nd Jul 2025
9 PM
4 AM3rd Jul 2025
18AQI
15AQI
24AQI
18AQI
In the last 24 hours,
Duncan College Street's AQI reached its highest point of 24 at 11 PM during the Night, while the lowest point, 15, was recorded at 7 AM during the Day between 2nd Jul and 3rd Jul 2025.
Day & Night AQI Trend : Jun - Jul 2025
Duncan College Street, Duncan, British Columbia, Canada
14°C11/18°C
14°C11/16°C
14°C11/18°C
16°C11/18°C
17°C13/21°C
18°C15/22°C
17°C15/20°C
16°C14/19°C
14°C13/16°C
13°C12/14°C
13°C12/14°C
13°C10/16°C
13°C11/15°C
15°C12/19°C
14°C12/18°C
15°C12/19°C
13°C11/15°C
13°C11/15°C
12°C11/13°C
13°C11/14°C
14°C12/17°C
16°C13/18°C
15°C14/17°C
13°C13/15°C
13°C12/14°C
14°C12/16°C
16°C12/22°C
19°C15/23°C
18°C16/22°C
15°C12/21°C
0°C0/0°C
22AQI
22AQI
23AQI
23AQI
2025 Days Vs Air Quality
Duncan College Street, Duncan, British Columbia, Canada
95%
174
5%
10
Total number of days with different AQI categories in last 184 days in 2025 (181 days remaining)
Under WHO’s Safe Air Quality Limits: 95%
Health Risk Level:
Very Low
In 2025, 95% of 184 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
Duncan College Street, Duncan, British Columbia, Canada
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
34AQI
30AQI
29AQI
33AQI
23AQI
28AQI
34AQI
42AQI
31AQI
33AQI
29AQI
37AQI
46AQI
41AQI
55AQI
39AQI
40AQI
39AQI
45AQI
48AQI
52AQI
57AQI
61AQI
36AQI
47AQI
53AQI
54AQI
56AQI
61AQI
61AQI
32AQI
22AQI
28AQI
34AQI
22AQI
34AQI
31AQI
34AQI
53AQI
48AQI
37AQI
36AQI
43AQI
42AQI
48AQI
37AQI
25AQI
32AQI
32AQI
22AQI
21AQI
27AQI
24AQI
18AQI
24AQI
18AQI
25AQI
30AQI
33AQI
38AQI
42AQI
35AQI
23AQI
23AQI
23AQI
28AQI
24AQI
34AQI
32AQI
37AQI
27AQI
24AQI
25AQI
22AQI
22AQI
24AQI
21AQI
25AQI
18AQI
20AQI
17AQI
18AQI
24AQI
21AQI
21AQI
17AQI
16AQI
18AQI
23AQI
20AQI
17AQI
27AQI
29AQI
34AQI
35AQI
31AQI
17AQI
14AQI
14AQI
27AQI
17AQI
19AQI
23AQI
32AQI
30AQI
31AQI
23AQI
29AQI
29AQI
22AQI
17AQI
18AQI
22AQI
31AQI
46AQI
36AQI
34AQI
21AQI
16AQI
18AQI
32AQI
31AQI
14AQI
16AQI
22AQI
26AQI
23AQI
17AQI
22AQI
28AQI
17AQI
18AQI
22AQI
19AQI
20AQI
15AQI
16AQI
16AQI
17AQI
11AQI
14AQI
17AQI
14AQI
15AQI
17AQI
17AQI
16AQI
20AQI
15AQI
21AQI
17AQI
16AQI
21AQI
23AQI
19AQI
19AQI
20AQI
21AQI
27AQI
33AQI
34AQI
39AQI
38AQI
31AQI
24AQI
23AQI
21AQI
17AQI
15AQI
16AQI
19AQI
19AQI
19AQI
22AQI
36AQI
24AQI
15AQI
14AQI
14AQI
20AQI
20AQI
23AQI
18AQI
22AQI
42AQI
31AQI
25AQI
25AQI
19AQI
23AQI
21AQI
No. of days
202527AQI
Highest AQI recorded in
January42AQI
Lowest AQI recorded in
May19AQI
202429AQI
Highest AQI recorded in
January47AQI
Lowest AQI recorded in
June20AQI
202335AQI
Highest AQI recorded in
November52AQI
Lowest AQI recorded in
April23AQI
202234AQI
Highest AQI recorded in
November54AQI
Lowest AQI recorded in
June15AQI
202128AQI
Highest AQI recorded in
November37AQI
Lowest AQI recorded in
June17AQI
202030AQI
Highest AQI recorded in
September61AQI
Lowest AQI recorded in
June13AQI
Most & Least Polluted Years Over the Last 6 Years
Duncan College Street's annual 2025 AQI (27) shows an average percentage change of -11.2% (improved AQI) compared to previous years: 2020 (30), 2021 (28), 2022 (34), 2023 (35), 2024 (29).