Greater Sudbury, Ontario, Canada Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
August Air Quality Analysis
Greater Sudbury, Ontario, Canada
AQI Trends: Highest and Lowest
Same Day Analysis (1st August ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 54 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 1st Aug - 2nd Aug 2025
Greater Sudbury, Ontario, Canada
5 AM1st Aug 2025
9 PM
4 AM2nd Aug 2025
66AQI
49AQI
77AQI
51AQI
In the last 24 hours,
Greater Sudbury's AQI reached its highest point of 77 at 2 AM during the Night, while the lowest point, 49, was recorded at 9 AM during the Day between 1st Aug and 2nd Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Greater Sudbury, Ontario, Canada
19°C14/23°C
19°C9/27°C
23°C16/33°C
18°C16/21°C
19°C13/26°C
20°C12/26°C
19°C15/23°C
20°C14/26°C
21°C12/30°C
22°C14/31°C
23°C19/27°C
23°C16/30°C
23°C16/31°C
22°C17/32°C
15°C12/20°C
18°C10/25°C
18°C15/23°C
18°C13/23°C
16°C9/22°C
17°C8/23°C
20°C14/26°C
23°C19/31°C
24°C18/30°C
22°C13/31°C
24°C16/33°C
24°C19/32°C
21°C17/25°C
21°C15/26°C
17°C11/21°C
18°C9/23°C
--°C/°C
46AQI
44AQI
43AQI
43AQI
2025 Days Vs Air Quality
Greater Sudbury, Ontario, Canada
84%
108
16%
20
Total number of days with different AQI categories in last 214 days in 2025 (151 days remaining)
Under WHO’s Safe Air Quality Limits: 84%
Health Risk Level:
Low
In 2025, 84% of 214 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
Greater Sudbury, Ontario, Canada
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
24AQI
20AQI
16AQI
17AQI
16AQI
16AQI
20AQI
18AQI
19AQI
28AQI
17AQI
19AQI
14AQI
23AQI
27AQI
29AQI
34AQI
38AQI
29AQI
13AQI
13AQI
26AQI
30AQI
31AQI
16AQI
19AQI
14AQI
23AQI
26AQI
22AQI
14AQI
16AQI
30AQI
24AQI
15AQI
27AQI
17AQI
14AQI
21AQI
20AQI
19AQI
18AQI
16AQI
24AQI
21AQI
18AQI
27AQI
40AQI
30AQI
31AQI
34AQI
29AQI
16AQI
13AQI
15AQI
15AQI
12AQI
11AQI
13AQI
17AQI
21AQI
24AQI
27AQI
24AQI
26AQI
18AQI
15AQI
22AQI
40AQI
66AQI
57AQI
63AQI
67AQI
65AQI
61AQI
57AQI
61AQI
51AQI
28AQI
27AQI
35AQI
43AQI
43AQI
35AQI
35AQI
25AQI
49AQI
51AQI
51AQI
48AQI
38AQI
31AQI
26AQI
28AQI
28AQI
33AQI
28AQI
35AQI
30AQI
30AQI
35AQI
49AQI
31AQI
28AQI
39AQI
35AQI
40AQI
46AQI
43AQI
57AQI
66AQI
70AQI
35AQI
31AQI
40AQI
36AQI
31AQI
27AQI
24AQI
29AQI
42AQI
59AQI
58AQI
53AQI
45AQI
63AQI
69AQI
54AQI
19AQI
22AQI
21AQI
43AQI
42AQI
54AQI
No. of days
202532AQI
Highest AQI recorded in
August54AQI
Lowest AQI recorded in
March19AQI
Most & Least Polluted Years Over the Last 1 Years
Greater Sudbury's annual 2025 AQI (32) shows an average percentage change of NaN% (improved AQI) compared to previous years: .