St Johns, Mount Pearl Park, Newfoundland And Labrador, 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
St Johns, Mount Pearl Park, Newfoundland And Labrador, Canada
AQI Trends: Highest and Lowest
Same Day Analysis (1st August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 32 of Good air quality, showing improvement over 2023 and 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 1st Aug - 2nd Aug 2025
St Johns, Mount Pearl Park, Newfoundland And Labrador, Canada
5 AM1st Aug 2025
8 PM
4 AM2nd Aug 2025
52AQI
22AQI
49AQI
33AQI
In the last 24 hours,
St Johns's AQI reached its highest point of 52 at 8 PM during the Day, while the lowest point, 22, was recorded at 10 AM during the Day between 1st Aug and 2nd Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
St Johns, Mount Pearl Park, Newfoundland And Labrador, Canada
19°C15/25°C
17°C15/20°C
17°C13/21°C
15°C11/21°C
15°C12/20°C
15°C12/18°C
13°C10/16°C
16°C12/20°C
15°C11/20°C
11°C10/11°C
16°C10/20°C
20°C15/25°C
18°C15/22°C
17°C13/21°C
21°C15/27°C
21°C17/24°C
18°C14/23°C
18°C14/23°C
15°C13/17°C
12°C8/15°C
14°C10/18°C
16°C10/22°C
17°C14/22°C
16°C13/19°C
17°C11/22°C
18°C13/23°C
16°C12/22°C
19°C15/24°C
18°C15/22°C
16°C13/20°C
--°C/°C
37AQI
36AQI
36AQI
36AQI
2025 Days Vs Air Quality
St Johns, Mount Pearl Park, Newfoundland And Labrador, Canada
98%
208
2%
5
Total number of days with different AQI categories in last 214 days in 2025 (151 days remaining)
Under WHO’s Safe Air Quality Limits: 98%
Health Risk Level:
Very Low
In 2025, 98% of 214 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
St Johns, Mount Pearl Park, Newfoundland And Labrador, Canada
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
27AQI
30AQI
29AQI
25AQI
38AQI
28AQI
21AQI
18AQI
19AQI
18AQI
20AQI
19AQI
30AQI
43AQI
38AQI
24AQI
32AQI
33AQI
42AQI
38AQI
46AQI
38AQI
24AQI
27AQI
20AQI
19AQI
21AQI
28AQI
24AQI
22AQI
22AQI
20AQI
18AQI
19AQI
22AQI
23AQI
31AQI
30AQI
27AQI
33AQI
35AQI
38AQI
41AQI
39AQI
26AQI
28AQI
35AQI
29AQI
29AQI
22AQI
24AQI
24AQI
24AQI
22AQI
27AQI
25AQI
26AQI
21AQI
28AQI
28AQI
31AQI
26AQI
24AQI
27AQI
18AQI
19AQI
18AQI
27AQI
23AQI
21AQI
21AQI
27AQI
23AQI
21AQI
22AQI
17AQI
21AQI
24AQI
23AQI
25AQI
23AQI
24AQI
27AQI
24AQI
22AQI
19AQI
19AQI
17AQI
19AQI
20AQI
19AQI
18AQI
18AQI
19AQI
19AQI
19AQI
16AQI
16AQI
19AQI
19AQI
24AQI
23AQI
23AQI
21AQI
21AQI
15AQI
17AQI
25AQI
16AQI
20AQI
17AQI
13AQI
18AQI
17AQI
18AQI
19AQI
16AQI
15AQI
26AQI
27AQI
20AQI
20AQI
19AQI
20AQI
17AQI
19AQI
18AQI
26AQI
17AQI
18AQI
16AQI
21AQI
23AQI
25AQI
21AQI
25AQI
29AQI
20AQI
16AQI
21AQI
21AQI
25AQI
29AQI
23AQI
16AQI
21AQI
25AQI
25AQI
32AQI
36AQI
28AQI
29AQI
20AQI
31AQI
20AQI
19AQI
22AQI
25AQI
25AQI
33AQI
41AQI
45AQI
39AQI
33AQI
26AQI
20AQI
22AQI
25AQI
22AQI
22AQI
20AQI
14AQI
13AQI
19AQI
22AQI
25AQI
23AQI
23AQI
27AQI
21AQI
20AQI
25AQI
16AQI
18AQI
23AQI
25AQI
23AQI
31AQI
31AQI
29AQI
28AQI
42AQI
51AQI
60AQI
47AQI
38AQI
50AQI
45AQI
32AQI
33AQI
42AQI
27AQI
19AQI
21AQI
34AQI
41AQI
32AQI
29AQI
54AQI
59AQI
59AQI
40AQI
32AQI
28AQI
27AQI
23AQI
19AQI
22AQI
25AQI
36AQI
32AQI
No. of days
202526AQI
Highest AQI recorded in
July36AQI
Lowest AQI recorded in
April19AQI
202423AQI
Highest AQI recorded in
April36AQI
Lowest AQI recorded in
July14AQI
202331AQI
Highest AQI recorded in
April40AQI
Lowest AQI recorded in
November23AQI
202229AQI
Highest AQI recorded in
April35AQI
Lowest AQI recorded in
September25AQI
202127AQI
Highest AQI recorded in
March32AQI
Lowest AQI recorded in
July21AQI
202024AQI
Highest AQI recorded in
April32AQI
Lowest AQI recorded in
July20AQI
Most & Least Polluted Years Over the Last 6 Years
St Johns's annual 2025 AQI (26) shows an average percentage change of -3.2% (improved AQI) compared to previous years: 2020 (24), 2021 (27), 2022 (29), 2023 (31), 2024 (23).