Cornwall, Connecticut, United States 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
Cornwall, Connecticut, United States
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 12 of Good air quality, showing improvement over 2025 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 2nd Jun - 3rd Jun 2026
Cornwall, Connecticut, United States
5 AM2nd Jun 2026
8 PM
4 AM3rd Jun 2026
70AQI
8AQI
14AQI
8AQI
In the last 24 hours,
Cornwall's AQI reached its highest point of 70 at 4 PM during the Day, while the lowest point, 8, was recorded at 3 AM during the Night between 2nd Jun and 3rd Jun 2026.
Day & Night AQI Trend : May - Jun 2026
Cornwall, Connecticut, United States
20°C13/27°C
16°C10/21°C
10°C7/13°C
9°C4/15°C
10°C6/17°C
14°C10/20°C
11°C6/17°C
11°C3/18°C
13°C8/21°C
12°C9/16°C
12°C8/17°C
18°C9/27°C
24°C16/30°C
24°C17/32°C
25°C17/35°C
21°C12/29°C
15°C7/23°C
14°C7/22°C
11°C9/16°C
10°C8/12°C
16°C12/22°C
19°C12/27°C
22°C17/29°C
17°C13/20°C
16°C10/23°C
10°C7/12°C
13°C5/23°C
14°C10/20°C
16°C7/25°C
20°C12/27°C
39AQI
22AQI
33AQI
24AQI
2026 Days Vs Air Quality
Cornwall, Connecticut, United States
97%
146
3%
5
Total number of days with different AQI categories in last 154 days in 2026 (211 days remaining)
Under WHO’s Safe Air Quality Limits: 97%
Health Risk Level:
Very Low
In 2026, 97% of 154 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
Cornwall, Connecticut, United States
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
19AQI (US)
15AQI (US)
11AQI (US)
15AQI (US)
16AQI (US)
54AQI (US)
23AQI (US)
14AQI (US)
18AQI (US)
17AQI (US)
11AQI (US)
9AQI (US)
28AQI (US)
31AQI (US)
33AQI (US)
9AQI (US)
30AQI (US)
36AQI (US)
26AQI (US)
21AQI (US)
18AQI (US)
38AQI (US)
42AQI (US)
33AQI (US)
44AQI (US)
47AQI (US)
30AQI (US)
28AQI (US)
33AQI (US)
56AQI (US)
34AQI (US)
33AQI (US)
40AQI (US)
42AQI (US)
34AQI (US)
50AQI (US)
44AQI (US)
31AQI (US)
28AQI (US)
47AQI (US)
41AQI (US)
32AQI (US)
31AQI (US)
38AQI (US)
36AQI (US)
33AQI (US)
36AQI (US)
46AQI (US)
43AQI (US)
32AQI (US)
32AQI (US)
41AQI (US)
39AQI (US)
35AQI (US)
40AQI (US)
33AQI (US)
26AQI (US)
28AQI (US)
30AQI (US)
32AQI (US)
52AQI (US)
31AQI (US)
40AQI (US)
29AQI (US)
28AQI (US)
30AQI (US)
28AQI (US)
30AQI (US)
32AQI (US)
35AQI (US)
32AQI (US)
35AQI (US)
25AQI (US)
22AQI (US)
30AQI (US)
33AQI (US)
27AQI (US)
25AQI (US)
31AQI (US)
37AQI (US)
25AQI (US)
39AQI (US)
35AQI (US)
25AQI (US)
17AQI (US)
24AQI (US)
18AQI (US)
14AQI (US)
18AQI (US)
19AQI (US)
26AQI (US)
28AQI (US)
22AQI (US)
25AQI (US)
28AQI (US)
30AQI (US)
22AQI (US)
33AQI (US)
19AQI (US)
22AQI (US)
26AQI (US)
21AQI (US)
20AQI (US)
19AQI (US)
25AQI (US)
21AQI (US)
27AQI (US)
31AQI (US)
22AQI (US)
20AQI (US)
17AQI (US)
17AQI (US)
15AQI (US)
32AQI (US)
19AQI (US)
20AQI (US)
20AQI (US)
21AQI (US)
23AQI (US)
18AQI (US)
20AQI (US)
32AQI (US)
34AQI (US)
22AQI (US)
24AQI (US)
23AQI (US)
21AQI (US)
23AQI (US)
27AQI (US)
20AQI (US)
14AQI (US)
46AQI (US)
39AQI (US)
46AQI (US)
55AQI (US)
52AQI (US)
46AQI (US)
36AQI (US)
34AQI (US)
39AQI (US)
44AQI (US)
42AQI (US)
17AQI (US)
12AQI (US)
15AQI (US)
14AQI (US)
13AQI (US)
17AQI (US)
20AQI (US)
20AQI (US)
12AQI (US)
27AQI (US)
36AQI (US)
29AQI (US)
23AQI (US)
29AQI (US)
17AQI (US)
No. of days
202629AQI (US)
Highest AQI (US) recorded in
February36AQI (US)
Lowest AQI (US) recorded in
June17AQI (US)
202529AQI (US)
Highest AQI (US) recorded in
June43AQI (US)
Lowest AQI (US) recorded in
April19AQI (US)
Most & Least Polluted Years Over the Last 2 Years
Cornwall's annual 2026 AQI (US) (29) shows an average percentage change of 0% (No Change AQI (US)) compared to previous years: 2025 (29).