Barrie, Ontario, 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
Barrie, Ontario, Canada
AQI Trends: Highest and Lowest
Same Day Analysis (3rd June):
On this day, AQI across the 2 years varied significantly: 2026 ranks 2nd highest AQI at 32 of Good air quality, showing improvement over 2025 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 3rd Jun - 4th Jun 2026
Barrie, Ontario, Canada
5 AM3rd Jun 2026
8 PM
4 AM4th Jun 2026
34AQI
27AQI
44AQI
26AQI
In the last 24 hours,
Barrie's AQI reached its highest point of 44 at 4 AM during the Night, while the lowest point, 26, was recorded at 10 PM during the Night between 3rd Jun and 4th Jun 2026.
Day & Night AQI Trend : May - Jun 2026
Barrie, Ontario, Canada
6°C2/10°C
6°C0/12°C
8°C2/15°C
11°C4/18°C
8°C2/13°C
6°C1/12°C
8°C1/16°C
8°C5/14°C
8°C6/10°C
13°C4/22°C
16°C8/23°C
20°C11/29°C
24°C15/34°C
23°C18/31°C
9°C5/10°C
9°C3/18°C
12°C4/21°C
11°C9/17°C
11°C8/15°C
16°C10/24°C
22°C13/31°C
18°C12/24°C
14°C10/19°C
16°C8/25°C
13°C6/21°C
14°C7/23°C
15°C8/21°C
16°C8/26°C
19°C11/28°C
21°C11/31°C
45AQI
34AQI
42AQI
42AQI
2026 Days Vs Air Quality
Barrie, Ontario, Canada
89%
134
11%
17
Total number of days with different AQI categories in last 155 days in 2026 (210 days remaining)
Under WHO’s Safe Air Quality Limits: 89%
Health Risk Level:
Low
In 2026, 89% of 155 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
Barrie, Ontario, Canada
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
9AQI (US)
9AQI (US)
10AQI (US)
39AQI (US)
47AQI (US)
75AQI (US)
65AQI (US)
63AQI (US)
35AQI (US)
15AQI (US)
18AQI (US)
31AQI (US)
44AQI (US)
36AQI (US)
11AQI (US)
26AQI (US)
45AQI (US)
30AQI (US)
37AQI (US)
17AQI (US)
36AQI (US)
59AQI (US)
61AQI (US)
47AQI (US)
50AQI (US)
48AQI (US)
39AQI (US)
43AQI (US)
49AQI (US)
58AQI (US)
46AQI (US)
48AQI (US)
52AQI (US)
49AQI (US)
45AQI (US)
53AQI (US)
51AQI (US)
40AQI (US)
44AQI (US)
49AQI (US)
46AQI (US)
40AQI (US)
40AQI (US)
48AQI (US)
50AQI (US)
43AQI (US)
48AQI (US)
51AQI (US)
44AQI (US)
42AQI (US)
40AQI (US)
36AQI (US)
36AQI (US)
39AQI (US)
47AQI (US)
47AQI (US)
37AQI (US)
40AQI (US)
40AQI (US)
40AQI (US)
61AQI (US)
47AQI (US)
49AQI (US)
43AQI (US)
36AQI (US)
45AQI (US)
43AQI (US)
40AQI (US)
38AQI (US)
46AQI (US)
41AQI (US)
44AQI (US)
36AQI (US)
32AQI (US)
38AQI (US)
34AQI (US)
33AQI (US)
39AQI (US)
45AQI (US)
41AQI (US)
38AQI (US)
41AQI (US)
37AQI (US)
38AQI (US)
37AQI (US)
29AQI (US)
30AQI (US)
30AQI (US)
37AQI (US)
59AQI (US)
34AQI (US)
31AQI (US)
46AQI (US)
29AQI (US)
33AQI (US)
29AQI (US)
28AQI (US)
31AQI (US)
43AQI (US)
31AQI (US)
33AQI (US)
37AQI (US)
48AQI (US)
49AQI (US)
55AQI (US)
51AQI (US)
30AQI (US)
42AQI (US)
28AQI (US)
31AQI (US)
43AQI (US)
27AQI (US)
30AQI (US)
35AQI (US)
31AQI (US)
35AQI (US)
26AQI (US)
28AQI (US)
27AQI (US)
24AQI (US)
32AQI (US)
34AQI (US)
36AQI (US)
33AQI (US)
28AQI (US)
31AQI (US)
32AQI (US)
28AQI (US)
29AQI (US)
46AQI (US)
28AQI (US)
43AQI (US)
49AQI (US)
79AQI (US)
61AQI (US)
46AQI (US)
51AQI (US)
45AQI (US)
44AQI (US)
50AQI (US)
44AQI (US)
47AQI (US)
38AQI (US)
32AQI (US)
28AQI (US)
26AQI (US)
28AQI (US)
34AQI (US)
31AQI (US)
36AQI (US)
32AQI (US)
39AQI (US)
44AQI (US)
40AQI (US)
36AQI (US)
38AQI (US)
33AQI (US)
No. of days
202639AQI (US)
Highest AQI (US) recorded in
February44AQI (US)
Lowest AQI (US) recorded in
June33AQI (US)
202536AQI (US)
Highest AQI (US) recorded in
August48AQI (US)
Lowest AQI (US) recorded in
March20AQI (US)
Most & Least Polluted Years Over the Last 2 Years
Barrie's annual 2026 AQI (US) (39) shows an average percentage change of 8.3% (worsened AQI (US)) compared to previous years: 2025 (36).