Delta, 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
Delta, British Columbia, Canada
AQI Trends: Highest and Lowest
Same Day Analysis (1st July ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 20 of Good air quality, showing improvement over 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 1st Jul - 2nd Jul 2025
Delta, British Columbia, Canada
5 AM1st Jul 2025
9 PM
4 AM2nd Jul 2025
22AQI
18AQI
18AQI
17AQI
In the last 24 hours,
Delta's AQI reached its highest point of 22 at 10 AM during the Day, while the lowest point, undefined, was recorded at 4 AM during the Night between 1st Jul and 2nd Jul 2025.
Day & Night AQI Trend : Jun - Jul 2025
Delta, British Columbia, Canada
13°C11/17°C
13°C12/16°C
13°C10/16°C
13°C11/15°C
15°C11/16°C
16°C12/20°C
16°C15/19°C
16°C14/19°C
15°C14/16°C
14°C13/14°C
13°C12/13°C
13°C12/14°C
13°C12/14°C
13°C10/17°C
13°C12/16°C
14°C12/17°C
14°C13/16°C
15°C14/15°C
13°C12/14°C
13°C12/15°C
14°C13/14°C
15°C13/18°C
14°C12/15°C
14°C13/15°C
14°C13/15°C
14°C13/14°C
15°C13/18°C
15°C11/17°C
16°C12/19°C
16°C14/18°C
0°C0/0°C
22AQI
22AQI
22AQI
22AQI
2025 Days Vs Air Quality
Delta, British Columbia, Canada
99%
180
1%
2
Total number of days with different AQI categories in last 183 days in 2025 (182 days remaining)
Under WHO’s Safe Air Quality Limits: 99%
Health Risk Level:
Very Low
In 2025, 99% of 183 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
Delta, British Columbia, Canada
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
24AQI
24AQI
20AQI
21AQI
19AQI
22AQI
32AQI
35AQI
28AQI
29AQI
20AQI
28AQI
29AQI
34AQI
36AQI
38AQI
28AQI
28AQI
36AQI
30AQI
49AQI
41AQI
55AQI
40AQI
26AQI
31AQI
32AQI
37AQI
43AQI
45AQI
30AQI
17AQI
19AQI
20AQI
20AQI
21AQI
22AQI
26AQI
53AQI
46AQI
39AQI
22AQI
29AQI
27AQI
25AQI
22AQI
20AQI
31AQI
36AQI
19AQI
18AQI
21AQI
20AQI
17AQI
21AQI
17AQI
20AQI
21AQI
24AQI
27AQI
30AQI
19AQI
19AQI
20AQI
20AQI
18AQI
21AQI
25AQI
25AQI
31AQI
22AQI
19AQI
20AQI
20AQI
19AQI
21AQI
18AQI
24AQI
16AQI
17AQI
17AQI
18AQI
18AQI
19AQI
20AQI
17AQI
15AQI
16AQI
17AQI
16AQI
18AQI
20AQI
24AQI
29AQI
26AQI
25AQI
16AQI
14AQI
14AQI
15AQI
16AQI
17AQI
18AQI
22AQI
20AQI
23AQI
18AQI
20AQI
20AQI
18AQI
16AQI
18AQI
22AQI
24AQI
32AQI
31AQI
34AQI
24AQI
18AQI
20AQI
28AQI
29AQI
14AQI
15AQI
18AQI
20AQI
21AQI
16AQI
22AQI
22AQI
19AQI
19AQI
23AQI
22AQI
23AQI
19AQI
17AQI
13AQI
18AQI
12AQI
14AQI
15AQI
17AQI
20AQI
20AQI
16AQI
16AQI
21AQI
18AQI
19AQI
19AQI
18AQI
20AQI
21AQI
18AQI
19AQI
17AQI
17AQI
21AQI
23AQI
28AQI
30AQI
38AQI
29AQI
23AQI
24AQI
21AQI
19AQI
17AQI
16AQI
18AQI
20AQI
20AQI
25AQI
36AQI
33AQI
22AQI
16AQI
15AQI
18AQI
20AQI
20AQI
32AQI
25AQI
20AQI
21AQI
19AQI
22AQI
20AQI
No. of days
202523AQI
Highest AQI recorded in
January32AQI
Lowest AQI recorded in
May19AQI
202418AQI
Highest AQI recorded in
December26AQI
Lowest AQI recorded in
September14AQI
202319AQI
Highest AQI recorded in
August24AQI
Lowest AQI recorded in
January15AQI
202217AQI
Highest AQI recorded in
October31AQI
Lowest AQI recorded in
July10AQI
202120AQI
Highest AQI recorded in
August35AQI
Lowest AQI recorded in
October11AQI
202022AQI
Highest AQI recorded in
September51AQI
Lowest AQI recorded in
June14AQI
Most & Least Polluted Years Over the Last 6 Years
Delta's annual 2025 AQI (23) shows an average percentage change of 21.1% (worsened AQI) compared to previous years: 2020 (22), 2021 (20), 2022 (17), 2023 (19), 2024 (18).