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!
June Air Quality Analysis
Duncan, British Columbia, Canada
AQI Trends: Highest and Lowest
Same Day Analysis (2nd June):
On this day, AQI across the 5 years varied significantly: 2026 ranks 2nd highest AQI at 21 of Good air quality, showing improvement over 2025 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 1st Jun - 2nd Jun 2026
Duncan, British Columbia, Canada
5 AM1st Jun 2026
8 PM
4 AM2nd Jun 2026
56AQI
8AQI
33AQI
12AQI
In the last 24 hours,
Duncan's AQI reached its highest point of 56 at 9 PM during the Day, while the lowest point, 8, was recorded at 5 AM during the Day between 1st Jun and 2nd Jun 2026.
Day & Night AQI Trend : May - Jun 2026
Duncan, British Columbia, Canada
20°C13/26°C
16°C11/20°C
14°C11/17°C
14°C11/20°C
14°C9/20°C
14°C8/20°C
15°C11/20°C
15°C9/22°C
17°C10/26°C
16°C11/21°C
13°C9/19°C
10°C8/14°C
10°C7/14°C
13°C6/20°C
15°C10/21°C
13°C9/17°C
12°C8/17°C
16°C9/23°C
17°C11/24°C
16°C11/21°C
15°C10/21°C
13°C11/17°C
13°C10/18°C
17°C11/25°C
18°C12/25°C
16°C11/21°C
14°C9/20°C
14°C9/21°C
18°C10/27°C
20°C13/28°C
37AQI
24AQI
31AQI
25AQI
2026 Days Vs Air Quality
Duncan, British Columbia, Canada
96%
144
4%
6
Total number of days with different AQI categories in last 153 days in 2026 (212 days remaining)
Under WHO’s Safe Air Quality Limits: 96%
Health Risk Level:
Very Low
In 2026, 96% of 153 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, British Columbia, Canada
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
61AQI (US)
63AQI (US)
30AQI (US)
17AQI (US)
23AQI (US)
16AQI (US)
15AQI (US)
15AQI (US)
20AQI (US)
29AQI (US)
14AQI (US)
14AQI (US)
12AQI (US)
15AQI (US)
15AQI (US)
21AQI (US)
33AQI (US)
37AQI (US)
39AQI (US)
32AQI (US)
46AQI (US)
47AQI (US)
52AQI (US)
48AQI (US)
43AQI (US)
42AQI (US)
41AQI (US)
45AQI (US)
52AQI (US)
44AQI (US)
44AQI (US)
47AQI (US)
39AQI (US)
48AQI (US)
44AQI (US)
45AQI (US)
38AQI (US)
37AQI (US)
40AQI (US)
36AQI (US)
47AQI (US)
43AQI (US)
20AQI (US)
41AQI (US)
39AQI (US)
41AQI (US)
38AQI (US)
45AQI (US)
33AQI (US)
36AQI (US)
18AQI (US)
36AQI (US)
35AQI (US)
35AQI (US)
38AQI (US)
30AQI (US)
33AQI (US)
31AQI (US)
36AQI (US)
37AQI (US)
30AQI (US)
17AQI (US)
46AQI (US)
37AQI (US)
32AQI (US)
42AQI (US)
34AQI (US)
37AQI (US)
35AQI (US)
40AQI (US)
41AQI (US)
35AQI (US)
36AQI (US)
35AQI (US)
35AQI (US)
35AQI (US)
32AQI (US)
33AQI (US)
40AQI (US)
37AQI (US)
36AQI (US)
27AQI (US)
35AQI (US)
34AQI (US)
24AQI (US)
27AQI (US)
30AQI (US)
26AQI (US)
21AQI (US)
16AQI (US)
27AQI (US)
34AQI (US)
26AQI (US)
28AQI (US)
27AQI (US)
22AQI (US)
24AQI (US)
24AQI (US)
24AQI (US)
23AQI (US)
24AQI (US)
19AQI (US)
34AQI (US)
35AQI (US)
34AQI (US)
29AQI (US)
30AQI (US)
30AQI (US)
24AQI (US)
18AQI (US)
16AQI (US)
23AQI (US)
20AQI (US)
19AQI (US)
15AQI (US)
15AQI (US)
18AQI (US)
26AQI (US)
22AQI (US)
13AQI (US)
14AQI (US)
26AQI (US)
24AQI (US)
16AQI (US)
13AQI (US)
19AQI (US)
25AQI (US)
23AQI (US)
20AQI (US)
16AQI (US)
22AQI (US)
45AQI (US)
51AQI (US)
58AQI (US)
47AQI (US)
45AQI (US)
46AQI (US)
38AQI (US)
45AQI (US)
41AQI (US)
41AQI (US)
39AQI (US)
27AQI (US)
19AQI (US)
21AQI (US)
17AQI (US)
18AQI (US)
20AQI (US)
25AQI (US)
21AQI (US)
33AQI (US)
37AQI (US)
33AQI (US)
25AQI (US)
29AQI (US)
23AQI (US)
No. of days
202631AQI (US)
Highest AQI (US) recorded in
February37AQI (US)
Lowest AQI (US) recorded in
June23AQI (US)
202530AQI (US)
Highest AQI (US) recorded in
January40AQI (US)
Lowest AQI (US) recorded in
May20AQI (US)
202425AQI (US)
Highest AQI (US) recorded in
January35AQI (US)
Lowest AQI (US) recorded in
June16AQI (US)
202326AQI (US)
Highest AQI (US) recorded in
November40AQI (US)
Lowest AQI (US) recorded in
July17AQI (US)
202229AQI (US)
Highest AQI (US) recorded in
November45AQI (US)
Lowest AQI (US) recorded in
July15AQI (US)
202125AQI (US)
Highest AQI (US) recorded in
January33AQI (US)
Lowest AQI (US) recorded in
June18AQI (US)
202029AQI (US)
Highest AQI (US) recorded in
September62AQI (US)
Lowest AQI (US) recorded in
June14AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Duncan's annual 2026 AQI (US) (31) shows an average percentage change of 14.05% (worsened AQI (US)) compared to previous years: 2020 (29), 2021 (25), 2022 (29), 2023 (26), 2024 (25), 2025 (30).