Cornwall, Ontario, Canada Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
Good
050
Moderate
100
Poor
150
Unhealthy
200
Severe
300
Hazardous
301+
November Air Quality Analysis
Cornwall, Ontario, Canada
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
21st Nov 2025
58AQILowest AQI recorded on
11th Nov 2025
12AQISame Day Analysis (25th November ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 34 of Good air quality, showing improvement over 2022 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 25th Nov - 26th Nov 2025
Cornwall, Ontario, Canada
AQI
Day
Night
.
7 AM25th Nov 2025
4 PM
6 AM26th Nov 2025
Day time
Avg. Highest Time
10AM25th Nov
30AQI
Avg. Lowest Time
8AM25th Nov
22AQI
Night time
Avg. Highest Time
7PM25th Nov
53AQI
Avg. Lowest Time
5PM25th Nov
29AQI
In the last 24 hours,
Cornwall's AQI reached its highest point of 53 at 7 PM during the Night, while the lowest point, 22, was recorded at 8 AM during the Day between 25th Nov and 26th Nov 2025.
Day & Night AQI Trend : Oct - Nov 2025
Cornwall, Ontario, Canada
OctNov
27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th
Day
Night
27th Oct 2025177 AMAQI
27th Oct 2025178 AMAQI
27th Oct 2025199 AMAQI
27th Oct 20252010 AMAQI
27th Oct 20252511 AMAQI
27th Oct 20252312 PMAQI
27th Oct 2025251 PMAQI
27th Oct 2025212 PMAQI
27th Oct 2025233 PMAQI
27th Oct 2025294 PMAQI
27th Oct 2025305 PMAQI
27th Oct 2025226 PMAQI
27th Oct 2025137 PMAQI
27th Oct 2025158 PMAQI
27th Oct 2025199 PMAQI
27th Oct 20252310 PMAQI
27th Oct 20252911 PMAQI
28th Oct 20253812 AMAQI
28th Oct 2025501 AMAQI
28th Oct 2025552 AMAQI
28th Oct 2025483 AMAQI
28th Oct 2025444 AMAQI
28th Oct 2025435 AMAQI
28th Oct 2025376 AMAQI
4°C0/11°C
28th Oct 2025307 AMAQI
28th Oct 2025238 AMAQI
28th Oct 2025249 AMAQI
28th Oct 20252110 AMAQI
28th Oct 20254911 AMAQI
28th Oct 20255012 PMAQI
28th Oct 2025431 PMAQI
28th Oct 2025312 PMAQI
28th Oct 2025283 PMAQI
28th Oct 2025404 PMAQI
28th Oct 2025325 PMAQI
28th Oct 2025266 PMAQI
28th Oct 2025237 PMAQI
28th Oct 2025228 PMAQI
28th Oct 2025259 PMAQI
28th Oct 20253110 PMAQI
28th Oct 20253511 PMAQI
29th Oct 20253212 AMAQI
29th Oct 2025441 AMAQI
29th Oct 2025492 AMAQI
29th Oct 2025483 AMAQI
29th Oct 2025424 AMAQI
29th Oct 2025395 AMAQI
29th Oct 2025426 AMAQI
5°C0/12°C
29th Oct 2025437 AMAQI
29th Oct 2025408 AMAQI
29th Oct 2025349 AMAQI
29th Oct 20254210 AMAQI
29th Oct 20254911 AMAQI
29th Oct 20253212 PMAQI
29th Oct 2025241 PMAQI
29th Oct 2025272 PMAQI
29th Oct 2025703 PMAQI
29th Oct 2025664 PMAQI
29th Oct 2025345 PMAQI
29th Oct 2025246 PMAQI
29th Oct 2025287 PMAQI
29th Oct 2025288 PMAQI
29th Oct 2025289 PMAQI
29th Oct 20252610 PMAQI
29th Oct 20252811 PMAQI
30th Oct 20253112 AMAQI
30th Oct 2025341 AMAQI
30th Oct 2025342 AMAQI
30th Oct 2025333 AMAQI
30th Oct 2025364 AMAQI
30th Oct 2025355 AMAQI
30th Oct 2025396 AMAQI
5°C0/12°C
30th Oct 2025417 AMAQI
30th Oct 2025398 AMAQI
30th Oct 2025379 AMAQI
30th Oct 20253910 AMAQI
30th Oct 20253511 AMAQI
30th Oct 20253612 PMAQI
30th Oct 2025391 PMAQI
30th Oct 2025382 PMAQI
30th Oct 2025313 PMAQI
30th Oct 2025224 PMAQI
30th Oct 2025185 PMAQI
30th Oct 2025196 PMAQI
30th Oct 2025207 PMAQI
30th Oct 2025218 PMAQI
30th Oct 2025259 PMAQI
30th Oct 20252210 PMAQI
30th Oct 20252011 PMAQI
31st Oct 20251812 AMAQI
31st Oct 2025201 AMAQI
31st Oct 2025192 AMAQI
31st Oct 2025183 AMAQI
31st Oct 2025164 AMAQI
31st Oct 2025175 AMAQI
31st Oct 2025206 AMAQI
4°C1/5°C
31st Oct 2025207 AMAQI
31st Oct 2025168 AMAQI
31st Oct 2025169 AMAQI
31st Oct 20251710 AMAQI
31st Oct 20251411 AMAQI
31st Oct 20251712 PMAQI
31st Oct 2025201 PMAQI
31st Oct 2025162 PMAQI
31st Oct 2025153 PMAQI
31st Oct 2025134 PMAQI
31st Oct 2025165 PMAQI
31st Oct 2025156 PMAQI
31st Oct 2025117 PMAQI
31st Oct 2025278 PMAQI
31st Oct 2025219 PMAQI
31st Oct 20251310 PMAQI
31st Oct 20251411 PMAQI
1st Nov 20251612 AMAQI
1st Nov 2025191 AMAQI
1st Nov 2025172 AMAQI
1st Nov 2025193 AMAQI
1st Nov 2025184 AMAQI
1st Nov 2025155 AMAQI
1st Nov 2025156 AMAQI
5°C2/6°C
1st Nov 2025127 AMAQI
1st Nov 2025118 AMAQI
1st Nov 2025119 AMAQI
1st Nov 20251110 AMAQI
1st Nov 20251111 AMAQI
1st Nov 20251112 PMAQI
1st Nov 2025111 PMAQI
1st Nov 2025112 PMAQI
1st Nov 2025113 PMAQI
1st Nov 2025114 PMAQI
1st Nov 2025115 PMAQI
1st Nov 2025116 PMAQI
1st Nov 2025117 PMAQI
1st Nov 2025118 PMAQI
1st Nov 2025119 PMAQI
1st Nov 20251110 PMAQI
1st Nov 20251111 PMAQI
2nd Nov 20251412 AMAQI
2nd Nov 2025151 AMAQI
2nd Nov 2025152 AMAQI
2nd Nov 2025153 AMAQI
2nd Nov 2025154 AMAQI
2nd Nov 2025155 AMAQI
2nd Nov 2025156 AMAQI
4°C2/6°C
2nd Nov 2025157 AMAQI
2nd Nov 2025128 AMAQI
2nd Nov 2025119 AMAQI
2nd Nov 20251110 AMAQI
2nd Nov 20251511 AMAQI
2nd Nov 20251112 PMAQI
2nd Nov 2025121 PMAQI
2nd Nov 2025132 PMAQI
2nd Nov 2025133 PMAQI
2nd Nov 2025134 PMAQI
2nd Nov 2025135 PMAQI
2nd Nov 2025146 PMAQI
2nd Nov 2025137 PMAQI
2nd Nov 2025148 PMAQI
2nd Nov 2025179 PMAQI
2nd Nov 20252010 PMAQI
2nd Nov 20252011 PMAQI
3rd Nov 20252212 AMAQI
3rd Nov 2025191 AMAQI
3rd Nov 2025192 AMAQI
3rd Nov 2025233 AMAQI
3rd Nov 2025274 AMAQI
3rd Nov 2025315 AMAQI
3rd Nov 2025306 AMAQI
4°C0/8°C
3rd Nov 2025297 AMAQI
3rd Nov 2025318 AMAQI
3rd Nov 2025309 AMAQI
3rd Nov 20253410 AMAQI
3rd Nov 20253411 AMAQI
3rd Nov 20252612 PMAQI
3rd Nov 2025241 PMAQI
3rd Nov 2025242 PMAQI
3rd Nov 2025243 PMAQI
3rd Nov 2025244 PMAQI
3rd Nov 2025245 PMAQI
3rd Nov 2025186 PMAQI
3rd Nov 2025177 PMAQI
3rd Nov 2025168 PMAQI
3rd Nov 2025199 PMAQI
3rd Nov 20252510 PMAQI
3rd Nov 20251911 PMAQI
4th Nov 20251512 AMAQI
4th Nov 2025151 AMAQI
4th Nov 2025162 AMAQI
4th Nov 2025153 AMAQI
4th Nov 2025144 AMAQI
4th Nov 2025135 AMAQI
4th Nov 2025156 AMAQI
5°C0/12°C
4th Nov 2025157 AMAQI
4th Nov 2025148 AMAQI
4th Nov 2025139 AMAQI
4th Nov 20251410 AMAQI
4th Nov 20251211 AMAQI
4th Nov 20251112 PMAQI
4th Nov 2025111 PMAQI
4th Nov 2025112 PMAQI
4th Nov 2025113 PMAQI
4th Nov 2025114 PMAQI
4th Nov 2025115 PMAQI
4th Nov 2025126 PMAQI
4th Nov 2025117 PMAQI
4th Nov 2025118 PMAQI
4th Nov 2025169 PMAQI
4th Nov 20251910 PMAQI
4th Nov 20251911 PMAQI
5th Nov 20252112 AMAQI
5th Nov 2025211 AMAQI
5th Nov 2025192 AMAQI
5th Nov 2025183 AMAQI
5th Nov 2025174 AMAQI
5th Nov 2025155 AMAQI
5th Nov 2025156 AMAQI
6°C3/13°C
5th Nov 2025137 AMAQI
5th Nov 2025118 AMAQI
5th Nov 2025119 AMAQI
5th Nov 20251610 AMAQI
5th Nov 20252011 AMAQI
5th Nov 20251912 PMAQI
5th Nov 2025201 PMAQI
5th Nov 2025222 PMAQI
5th Nov 2025213 PMAQI
5th Nov 2025254 PMAQI
5th Nov 2025245 PMAQI
5th Nov 2025186 PMAQI
5th Nov 2025187 PMAQI
5th Nov 2025188 PMAQI
5th Nov 2025189 PMAQI
5th Nov 20252010 PMAQI
5th Nov 20252111 PMAQI
6th Nov 20252212 AMAQI
6th Nov 2025181 AMAQI
6th Nov 2025162 AMAQI
6th Nov 2025133 AMAQI
6th Nov 2025124 AMAQI
6th Nov 2025145 AMAQI
6th Nov 2025156 AMAQI
4°C1/9°C
6th Nov 2025177 AMAQI
6th Nov 2025198 AMAQI
6th Nov 2025189 AMAQI
6th Nov 20252010 AMAQI
6th Nov 20252411 AMAQI
6th Nov 20251712 PMAQI
6th Nov 2025151 PMAQI
6th Nov 2025152 PMAQI
6th Nov 2025153 PMAQI
6th Nov 2025164 PMAQI
6th Nov 2025175 PMAQI
6th Nov 2025186 PMAQI
6th Nov 2025187 PMAQI
6th Nov 2025228 PMAQI
6th Nov 2025289 PMAQI
6th Nov 20253610 PMAQI
6th Nov 20254211 PMAQI
7th Nov 20253912 AMAQI
7th Nov 2025301 AMAQI
7th Nov 2025272 AMAQI
7th Nov 2025263 AMAQI
7th Nov 2025224 AMAQI
7th Nov 2025205 AMAQI
7th Nov 2025206 AMAQI
2°C0/3°C
7th Nov 2025237 AMAQI
7th Nov 2025238 AMAQI
7th Nov 2025239 AMAQI
7th Nov 20252310 AMAQI
7th Nov 20252311 AMAQI
7th Nov 20252112 PMAQI
7th Nov 2025211 PMAQI
7th Nov 2025212 PMAQI
7th Nov 2025223 PMAQI
7th Nov 2025224 PMAQI
7th Nov 2025235 PMAQI
7th Nov 2025226 PMAQI
7th Nov 2025217 PMAQI
7th Nov 2025238 PMAQI
7th Nov 2025269 PMAQI
7th Nov 20252810 PMAQI
7th Nov 20253211 PMAQI
8th Nov 20253512 AMAQI
8th Nov 2025371 AMAQI
8th Nov 2025422 AMAQI
8th Nov 2025433 AMAQI
8th Nov 2025394 AMAQI
8th Nov 2025355 AMAQI
8th Nov 2025386 AMAQI
3°C-3/10°C
8th Nov 2025327 AMAQI
8th Nov 2025288 AMAQI
8th Nov 2025269 AMAQI
8th Nov 20252910 AMAQI
8th Nov 20253011 AMAQI
8th Nov 20253112 PMAQI
8th Nov 2025301 PMAQI
8th Nov 2025282 PMAQI
8th Nov 2025273 PMAQI
8th Nov 2025234 PMAQI
8th Nov 2025225 PMAQI
8th Nov 2025246 PMAQI
8th Nov 2025247 PMAQI
8th Nov 2025298 PMAQI
8th Nov 2025329 PMAQI
8th Nov 20253210 PMAQI
8th Nov 20252211 PMAQI
9th Nov 20252012 AMAQI
9th Nov 2025221 AMAQI
9th Nov 2025222 AMAQI
9th Nov 2025223 AMAQI
9th Nov 2025244 AMAQI
9th Nov 2025195 AMAQI
9th Nov 2025176 AMAQI
4°C0/7°C
9th Nov 2025177 AMAQI
9th Nov 2025178 AMAQI
9th Nov 2025159 AMAQI
9th Nov 20251510 AMAQI
9th Nov 20251511 AMAQI
9th Nov 20251712 PMAQI
9th Nov 2025241 PMAQI
9th Nov 2025232 PMAQI
9th Nov 2025253 PMAQI
9th Nov 2025264 PMAQI
9th Nov 2025295 PMAQI
9th Nov 2025296 PMAQI
9th Nov 2025317 PMAQI
9th Nov 2025308 PMAQI
9th Nov 2025279 PMAQI
9th Nov 20252110 PMAQI
9th Nov 20252011 PMAQI
10th Nov 20252312 AMAQI
10th Nov 2025241 AMAQI
10th Nov 2025242 AMAQI
10th Nov 2025203 AMAQI
10th Nov 2025164 AMAQI
10th Nov 2025155 AMAQI
10th Nov 2025186 AMAQI
-1°C-3/1°C
10th Nov 2025137 AMAQI
10th Nov 2025138 AMAQI
10th Nov 2025189 AMAQI
10th Nov 20251610 AMAQI
10th Nov 20251511 AMAQI
10th Nov 20251512 PMAQI
10th Nov 2025181 PMAQI
10th Nov 2025182 PMAQI
10th Nov 2025183 PMAQI
10th Nov 2025184 PMAQI
10th Nov 2025185 PMAQI
10th Nov 2025186 PMAQI
10th Nov 2025187 PMAQI
10th Nov 2025168 PMAQI
10th Nov 2025159 PMAQI
10th Nov 20251510 PMAQI
10th Nov 20251611 PMAQI
11th Nov 20251612 AMAQI
11th Nov 2025131 AMAQI
11th Nov 2025112 AMAQI
11th Nov 2025113 AMAQI
11th Nov 2025124 AMAQI
11th Nov 2025145 AMAQI
11th Nov 2025116 AMAQI
-1°C-3/-1°C
11th Nov 2025117 AMAQI
11th Nov 2025118 AMAQI
11th Nov 2025119 AMAQI
11th Nov 20251110 AMAQI
11th Nov 20251111 AMAQI
11th Nov 20251112 PMAQI
11th Nov 2025111 PMAQI
11th Nov 2025162 PMAQI
11th Nov 2025123 PMAQI
11th Nov 2025114 PMAQI
11th Nov 2025165 PMAQI
11th Nov 2025156 PMAQI
11th Nov 2025127 PMAQI
11th Nov 2025138 PMAQI
11th Nov 2025129 PMAQI
11th Nov 20251110 PMAQI
11th Nov 20251111 PMAQI
12th Nov 20251312 AMAQI
12th Nov 2025251 AMAQI
12th Nov 2025182 AMAQI
12th Nov 2025143 AMAQI
12th Nov 2025154 AMAQI
12th Nov 2025155 AMAQI
12th Nov 2025136 AMAQI
-3°C-5/-1°C
12th Nov 2025137 AMAQI
12th Nov 2025168 AMAQI
12th Nov 2025179 AMAQI
12th Nov 20252010 AMAQI
12th Nov 20252211 AMAQI
12th Nov 20252112 PMAQI
12th Nov 2025221 PMAQI
12th Nov 2025262 PMAQI
12th Nov 2025263 PMAQI
12th Nov 2025284 PMAQI
12th Nov 2025285 PMAQI
12th Nov 2025296 PMAQI
12th Nov 2025307 PMAQI
12th Nov 2025308 PMAQI
12th Nov 2025309 PMAQI
12th Nov 20253510 PMAQI
12th Nov 20253811 PMAQI
13th Nov 20253512 AMAQI
13th Nov 2025301 AMAQI
13th Nov 2025302 AMAQI
13th Nov 2025263 AMAQI
13th Nov 2025244 AMAQI
13th Nov 2025195 AMAQI
13th Nov 2025156 AMAQI
0°C-3/2°C
13th Nov 2025177 AMAQI
13th Nov 2025178 AMAQI
13th Nov 2025179 AMAQI
13th Nov 20251710 AMAQI
13th Nov 20251611 AMAQI
13th Nov 20251812 PMAQI
13th Nov 2025151 PMAQI
13th Nov 2025152 PMAQI
13th Nov 2025153 PMAQI
13th Nov 2025154 PMAQI
13th Nov 2025155 PMAQI
13th Nov 2025156 PMAQI
13th Nov 2025187 PMAQI
13th Nov 2025168 PMAQI
13th Nov 2025159 PMAQI
13th Nov 20251710 PMAQI
13th Nov 20251611 PMAQI
14th Nov 20251512 AMAQI
14th Nov 2025171 AMAQI
14th Nov 2025172 AMAQI
14th Nov 2025173 AMAQI
14th Nov 2025134 AMAQI
14th Nov 2025125 AMAQI
14th Nov 2025126 AMAQI
1°C-2/3°C
14th Nov 2025117 AMAQI
14th Nov 2025148 AMAQI
14th Nov 2025179 AMAQI
14th Nov 20251610 AMAQI
14th Nov 20251811 AMAQI
14th Nov 20251612 PMAQI
14th Nov 2025151 PMAQI
14th Nov 2025152 PMAQI
14th Nov 2025153 PMAQI
14th Nov 2025154 PMAQI
14th Nov 2025185 PMAQI
14th Nov 2025186 PMAQI
14th Nov 2025217 PMAQI
14th Nov 2025258 PMAQI
14th Nov 2025199 PMAQI
14th Nov 20252110 PMAQI
14th Nov 20252411 PMAQI
15th Nov 20252512 AMAQI
15th Nov 2025261 AMAQI
15th Nov 2025202 AMAQI
15th Nov 2025163 AMAQI
15th Nov 2025154 AMAQI
15th Nov 2025155 AMAQI
15th Nov 2025176 AMAQI
1°C-2/6°C
15th Nov 2025167 AMAQI
15th Nov 2025158 AMAQI
15th Nov 2025189 AMAQI
15th Nov 20251810 AMAQI
15th Nov 20252211 AMAQI
15th Nov 20251912 PMAQI
15th Nov 2025161 PMAQI
15th Nov 2025122 PMAQI
15th Nov 2025113 PMAQI
15th Nov 2025114 PMAQI
15th Nov 2025155 PMAQI
15th Nov 2025176 PMAQI
15th Nov 2025177 PMAQI
15th Nov 2025178 PMAQI
15th Nov 2025179 PMAQI
15th Nov 20252110 PMAQI
15th Nov 20252311 PMAQI
16th Nov 20252712 AMAQI
16th Nov 2025281 AMAQI
16th Nov 2025252 AMAQI
16th Nov 2025313 AMAQI
16th Nov 2025384 AMAQI
16th Nov 2025395 AMAQI
16th Nov 2025396 AMAQI
0°C-2/4°C
16th Nov 2025377 AMAQI
16th Nov 2025358 AMAQI
16th Nov 2025349 AMAQI
16th Nov 20253110 AMAQI
16th Nov 20252411 AMAQI
16th Nov 20252112 PMAQI
16th Nov 2025131 PMAQI
16th Nov 2025112 PMAQI
16th Nov 2025113 PMAQI
16th Nov 2025144 PMAQI
16th Nov 2025185 PMAQI
16th Nov 2025216 PMAQI
16th Nov 2025227 PMAQI
16th Nov 2025168 PMAQI
16th Nov 2025129 PMAQI
16th Nov 20251410 PMAQI
16th Nov 20251511 PMAQI
17th Nov 20251112 AMAQI
17th Nov 2025131 AMAQI
17th Nov 2025122 AMAQI
17th Nov 2025113 AMAQI
17th Nov 2025144 AMAQI
17th Nov 2025175 AMAQI
17th Nov 2025136 AMAQI
0°C-2/1°C
17th Nov 2025107 AMAQI
17th Nov 202598 AMAQI
17th Nov 2025109 AMAQI
17th Nov 20251210 AMAQI
17th Nov 20251511 AMAQI
17th Nov 20251112 PMAQI
17th Nov 2025131 PMAQI
17th Nov 2025172 PMAQI
17th Nov 2025103 PMAQI
17th Nov 2025144 PMAQI
17th Nov 2025125 PMAQI
17th Nov 2025146 PMAQI
17th Nov 2025147 PMAQI
17th Nov 2025158 PMAQI
17th Nov 2025129 PMAQI
17th Nov 20251110 PMAQI
17th Nov 20251411 PMAQI
18th Nov 20251512 AMAQI
18th Nov 2025151 AMAQI
18th Nov 2025122 AMAQI
18th Nov 2025113 AMAQI
18th Nov 2025114 AMAQI
18th Nov 2025105 AMAQI
18th Nov 202596 AMAQI
-2°C-3/0°C
18th Nov 2025107 AMAQI
18th Nov 2025118 AMAQI
18th Nov 2025119 AMAQI
18th Nov 20251210 AMAQI
18th Nov 20251111 AMAQI
18th Nov 20251112 PMAQI
18th Nov 2025111 PMAQI
18th Nov 2025112 PMAQI
18th Nov 2025113 PMAQI
18th Nov 2025114 PMAQI
18th Nov 2025115 PMAQI
18th Nov 2025156 PMAQI
18th Nov 2025177 PMAQI
18th Nov 2025208 PMAQI
18th Nov 2025249 PMAQI
18th Nov 20253310 PMAQI
18th Nov 20253811 PMAQI
19th Nov 20254012 AMAQI
19th Nov 2025531 AMAQI
19th Nov 2025532 AMAQI
19th Nov 2025443 AMAQI
19th Nov 2025384 AMAQI
19th Nov 2025345 AMAQI
19th Nov 2025376 AMAQI
-1°C-2/0°C
19th Nov 2025357 AMAQI
19th Nov 2025328 AMAQI
19th Nov 2025389 AMAQI
19th Nov 20253710 AMAQI
19th Nov 20253411 AMAQI
19th Nov 20253112 PMAQI
19th Nov 2025311 PMAQI
19th Nov 2025252 PMAQI
19th Nov 2025223 PMAQI
19th Nov 2025274 PMAQI
19th Nov 2025255 PMAQI
19th Nov 2025386 PMAQI
19th Nov 2025457 PMAQI
19th Nov 2025428 PMAQI
19th Nov 2025409 PMAQI
19th Nov 20254110 PMAQI
19th Nov 20254111 PMAQI
20th Nov 20254112 AMAQI
20th Nov 2025421 AMAQI
20th Nov 2025412 AMAQI
20th Nov 2025413 AMAQI
20th Nov 2025404 AMAQI
20th Nov 2025425 AMAQI
20th Nov 2025436 AMAQI
-4°C-7/-1°C
20th Nov 2025427 AMAQI
20th Nov 2025338 AMAQI
20th Nov 2025309 AMAQI
20th Nov 20253010 AMAQI
20th Nov 20253011 AMAQI
20th Nov 20253012 PMAQI
20th Nov 2025291 PMAQI
20th Nov 2025342 PMAQI
20th Nov 2025323 PMAQI
20th Nov 2025304 PMAQI
20th Nov 2025325 PMAQI
20th Nov 2025356 PMAQI
20th Nov 2025357 PMAQI
20th Nov 2025358 PMAQI
20th Nov 2025359 PMAQI
20th Nov 20254110 PMAQI
20th Nov 20255111 PMAQI
21st Nov 20255312 AMAQI
21st Nov 2025551 AMAQI
21st Nov 2025582 AMAQI
21st Nov 2025573 AMAQI
21st Nov 2025534 AMAQI
21st Nov 2025535 AMAQI
21st Nov 2025586 AMAQI
-3°C-5/-1°C
21st Nov 2025597 AMAQI
21st Nov 2025628 AMAQI
21st Nov 2025639 AMAQI
21st Nov 20256410 AMAQI
21st Nov 20255911 AMAQI
21st Nov 20255812 PMAQI
21st Nov 2025561 PMAQI
21st Nov 2025542 PMAQI
21st Nov 2025513 PMAQI
21st Nov 2025464 PMAQI
21st Nov 2025505 PMAQI
21st Nov 2025536 PMAQI
21st Nov 2025527 PMAQI
21st Nov 2025518 PMAQI
21st Nov 2025529 PMAQI
21st Nov 20255710 PMAQI
21st Nov 20255811 PMAQI
22nd Nov 20255212 AMAQI
22nd Nov 2025471 AMAQI
22nd Nov 2025442 AMAQI
22nd Nov 2025433 AMAQI
22nd Nov 2025424 AMAQI
22nd Nov 2025425 AMAQI
22nd Nov 2025376 AMAQI
0°C-5/6°C
22nd Nov 2025367 AMAQI
22nd Nov 2025378 AMAQI
22nd Nov 2025339 AMAQI
22nd Nov 20253310 AMAQI
22nd Nov 20253311 AMAQI
22nd Nov 20253112 PMAQI
22nd Nov 2025311 PMAQI
22nd Nov 2025292 PMAQI
22nd Nov 2025233 PMAQI
22nd Nov 2025224 PMAQI
22nd Nov 2025195 PMAQI
22nd Nov 2025176 PMAQI
22nd Nov 2025197 PMAQI
22nd Nov 2025198 PMAQI
22nd Nov 2025299 PMAQI
22nd Nov 20252710 PMAQI
22nd Nov 20252311 PMAQI
23rd Nov 20252412 AMAQI
23rd Nov 2025241 AMAQI
23rd Nov 2025252 AMAQI
23rd Nov 2025293 AMAQI
23rd Nov 2025294 AMAQI
23rd Nov 2025325 AMAQI
23rd Nov 2025326 AMAQI
1°C0/6°C
23rd Nov 2025277 AMAQI
23rd Nov 2025238 AMAQI
23rd Nov 2025199 AMAQI
23rd Nov 20251810 AMAQI
23rd Nov 20252211 AMAQI
23rd Nov 20252412 PMAQI
23rd Nov 2025201 PMAQI
23rd Nov 2025242 PMAQI
23rd Nov 2025283 PMAQI
23rd Nov 2025284 PMAQI
23rd Nov 2025285 PMAQI
23rd Nov 2025286 PMAQI
23rd Nov 2025287 PMAQI
23rd Nov 2025298 PMAQI
23rd Nov 2025349 PMAQI
23rd Nov 20253810 PMAQI
23rd Nov 20254211 PMAQI
24th Nov 20254412 AMAQI
24th Nov 2025431 AMAQI
24th Nov 2025392 AMAQI
24th Nov 2025383 AMAQI
24th Nov 2025394 AMAQI
24th Nov 2025405 AMAQI
24th Nov 2025426 AMAQI
-1°C-5/2°C
24th Nov 2025437 AMAQI
24th Nov 2025408 AMAQI
24th Nov 2025359 AMAQI
24th Nov 20252810 AMAQI
24th Nov 20251811 AMAQI
24th Nov 20251512 PMAQI
24th Nov 2025151 PMAQI
24th Nov 2025152 PMAQI
24th Nov 2025153 PMAQI
24th Nov 2025154 PMAQI
24th Nov 2025155 PMAQI
24th Nov 2025156 PMAQI
24th Nov 2025157 PMAQI
24th Nov 2025198 PMAQI
24th Nov 2025169 PMAQI
24th Nov 20251510 PMAQI
24th Nov 20251511 PMAQI
25th Nov 20251812 AMAQI
25th Nov 2025161 AMAQI
25th Nov 2025152 AMAQI
25th Nov 2025183 AMAQI
25th Nov 2025314 AMAQI
25th Nov 2025245 AMAQI
25th Nov 2025216 AMAQI
2°C0/3°C
25th Nov 2025237 AMAQI
25th Nov 2025228 AMAQI
25th Nov 2025259 AMAQI
25th Nov 20253010 AMAQI
25th Nov 20253011 AMAQI
25th Nov 20252812 PMAQI
25th Nov 2025281 PMAQI
25th Nov 2025282 PMAQI
25th Nov 2025293 PMAQI
25th Nov 2025294 PMAQI
25th Nov 2025295 PMAQI
25th Nov 2025456 PMAQI
25th Nov 2025537 PMAQI
25th Nov 2025408 PMAQI
25th Nov 2025469 PMAQI
25th Nov 20254310 PMAQI
25th Nov 20254111 PMAQI
26th Nov 20253812 AMAQI
26th Nov 2025391 AMAQI
26th Nov 2025442 AMAQI
26th Nov 2025423 AMAQI
26th Nov 2025424 AMAQI
26th Nov 2025435 AMAQI
26th Nov 2025416 AMAQI
4°C0/11°C
26th Nov 2025427 AMAQI
7 AM26th Nov 2025468 AMAQI
26th Nov 2025479 AMAQI
26th Nov 20254710 AMAQI
26th Nov 20254711 AMAQI
11 AM26th Nov 20254612 PMAQI
26th Nov 2025491 PMAQI
26th Nov 2025532 PMAQI
26th Nov 2025563 PMAQI
26th Nov 2025654 PMAQI
4 PM26th Nov 2025705 PMAQI
26th Nov 2025676 PMAQI
11 PM
6 AM
--°C/°C
Day time
Avg. Highest Time
7 AM
25AQI
1 hours / Day
30 hours / Month
Avg. Lowest Time
12 PM - 3 PM
23AQI
4 hours / Day
120 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 7 AM to 7 AM (Avg. 25), while the lowest AQI was between 12 PM to 3 PM (Avg. 23).
Night time
Avg. Highest Time
1 AM - 2 AM
28AQI
2 hours / Day
60 hours / Month
Avg. Lowest Time
5 PM
23AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 1 AM to 2 AM (Avg. 28), while the lowest AQI was between 5 PM to 5 PM (Avg. 23).
2025 Days Vs Air Quality
Cornwall, Ontario, Canada
2025
91%
299
9%
30
Total number of days with different AQI categories in last 330 days in 2025 (35 days remaining)
Good
299 DaysModerate
30 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 91%
Health Risk Level:
Very Low
In 2025, 91% of 330 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, Ontario, Canada
AQI levels in 2025
AQI
PM2.5
PM10
CO
SO2
NO2
O3
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
-1th undefined 2025
-1th undefined 2025
-1th undefined 2025
1st January 2025
22AQI
22AQI
2nd January 2025
22AQI
22AQI
3rd January 2025
23AQI
23AQI
4th January 2025
25AQI
25AQI
5th January 2025
25AQI
25AQI
6th January 2025
23AQI
23AQI
7th January 2025
23AQI
23AQI
8th January 2025
24AQI
24AQI
9th January 2025
26AQI
26AQI
10th January 2025
31AQI
31AQI
11th January 2025
32AQI
32AQI
12th January 2025
35AQI
35AQI
13th January 2025
46AQI
46AQI
14th January 2025
24AQI
24AQI
15th January 2025
23AQI
23AQI
16th January 2025
33AQI
33AQI
17th January 2025
49AQI
49AQI
18th January 2025
30AQI
30AQI
19th January 2025
23AQI
23AQI
20th January 2025
28AQI
28AQI
21st January 2025
29AQI
29AQI
22nd January 2025
31AQI
31AQI
23rd January 2025
33AQI
33AQI
24th January 2025
38AQI
38AQI
25th January 2025
41AQI
41AQI
26th January 2025
38AQI
38AQI
27th January 2025
29AQI
29AQI
28th January 2025
29AQI
29AQI
29th January 2025
27AQI
27AQI
30th January 2025
27AQI
27AQI
31st January 2025
46AQI
46AQI
1st February 2025
29AQI
29AQI
2nd February 2025
30AQI
30AQI
3rd February 2025
54AQI
54AQI
4th February 2025
25AQI
25AQI
5th February 2025
24AQI
24AQI
6th February 2025
31AQI
31AQI
7th February 2025
32AQI
32AQI
8th February 2025
26AQI
26AQI
9th February 2025
28AQI
28AQI
10th February 2025
26AQI
26AQI
11th February 2025
28AQI
28AQI
12th February 2025
30AQI
30AQI
13th February 2025
27AQI
27AQI
14th February 2025
28AQI
28AQI
15th February 2025
28AQI
28AQI
16th February 2025
26AQI
26AQI
17th February 2025
24AQI
24AQI
18th February 2025
21AQI
21AQI
19th February 2025
20AQI
20AQI
20th February 2025
23AQI
23AQI
21st February 2025
27AQI
27AQI
22nd February 2025
42AQI
42AQI
23rd February 2025
50AQI
50AQI
24th February 2025
43AQI
43AQI
25th February 2025
60AQI
60AQI
26th February 2025
35AQI
35AQI
27th February 2025
30AQI
30AQI
28th February 2025
32AQI
32AQI
1st March 2025
29AQI
29AQI
2nd March 2025
29AQI
29AQI
3rd March 2025
33AQI
33AQI
4th March 2025
40AQI
40AQI
5th March 2025
53AQI
53AQI
6th March 2025
26AQI
26AQI
7th March 2025
30AQI
30AQI
8th March 2025
32AQI
32AQI
9th March 2025
30AQI
30AQI
10th March 2025
29AQI
29AQI
11th March 2025
36AQI
36AQI
12th March 2025
29AQI
29AQI
13th March 2025
41AQI
41AQI
14th March 2025
64AQI
64AQI
15th March 2025
60AQI
60AQI
16th March 2025
33AQI
33AQI
17th March 2025
18AQI
18AQI
18th March 2025
23AQI
23AQI
19th March 2025
38AQI
38AQI
20th March 2025
33AQI
33AQI
21st March 2025
16AQI
16AQI
22nd March 2025
24AQI
24AQI
23rd March 2025
19AQI
19AQI
24th March 2025
25AQI
25AQI
25th March 2025
22AQI
22AQI
26th March 2025
20AQI
20AQI
27th March 2025
17AQI
17AQI
28th March 2025
18AQI
18AQI
29th March 2025
19AQI
19AQI
30th March 2025
25AQI
25AQI
31st March 2025
29AQI
29AQI
1st April 2025
17AQI
17AQI
2nd April 2025
18AQI
18AQI
3rd April 2025
19AQI
19AQI
4th April 2025
18AQI
18AQI
5th April 2025
26AQI
26AQI
6th April 2025
16AQI
16AQI
7th April 2025
20AQI
20AQI
8th April 2025
18AQI
18AQI
9th April 2025
17AQI
17AQI
10th April 2025
22AQI
22AQI
11th April 2025
32AQI
32AQI
12th April 2025
40AQI
40AQI
13th April 2025
25AQI
25AQI
14th April 2025
26AQI
26AQI
15th April 2025
24AQI
24AQI
16th April 2025
21AQI
21AQI
17th April 2025
15AQI
15AQI
18th April 2025
21AQI
21AQI
19th April 2025
34AQI
34AQI
20th April 2025
19AQI
19AQI
21st April 2025
19AQI
19AQI
22nd April 2025
18AQI
18AQI
23rd April 2025
14AQI
14AQI
24th April 2025
22AQI
22AQI
25th April 2025
24AQI
24AQI
26th April 2025
21AQI
21AQI
27th April 2025
12AQI
12AQI
28th April 2025
16AQI
16AQI
29th April 2025
29AQI
29AQI
30th April 2025
17AQI
17AQI
1st May 2025
22AQI
22AQI
2nd May 2025
22AQI
22AQI
3rd May 2025
14AQI
14AQI
4th May 2025
20AQI
20AQI
5th May 2025
19AQI
19AQI
6th May 2025
17AQI
17AQI
7th May 2025
16AQI
16AQI
8th May 2025
16AQI
16AQI
9th May 2025
21AQI
21AQI
10th May 2025
17AQI
17AQI
11th May 2025
17AQI
17AQI
12th May 2025
20AQI
20AQI
13th May 2025
28AQI
28AQI
14th May 2025
32AQI
32AQI
15th May 2025
27AQI
27AQI
16th May 2025
30AQI
30AQI
17th May 2025
28AQI
28AQI
18th May 2025
16AQI
16AQI
19th May 2025
12AQI
12AQI
20th May 2025
13AQI
13AQI
21st May 2025
18AQI
18AQI
22nd May 2025
13AQI
13AQI
23rd May 2025
15AQI
15AQI
24th May 2025
13AQI
13AQI
25th May 2025
16AQI
16AQI
26th May 2025
19AQI
19AQI
27th May 2025
22AQI
22AQI
28th May 2025
28AQI
28AQI
29th May 2025
23AQI
23AQI
30th May 2025
24AQI
24AQI
31st May 2025
24AQI
24AQI
1st June 2025
13AQI
13AQI
2nd June 2025
17AQI
17AQI
3rd June 2025
26AQI
26AQI
4th June 2025
47AQI
47AQI
5th June 2025
48AQI
48AQI
6th June 2025
53AQI
53AQI
7th June 2025
59AQI
59AQI
8th June 2025
59AQI
59AQI
9th June 2025
58AQI
58AQI
10th June 2025
39AQI
39AQI
11th June 2025
49AQI
49AQI
12th June 2025
56AQI
56AQI
13th June 2025
29AQI
29AQI
14th June 2025
29AQI
29AQI
15th June 2025
29AQI
29AQI
16th June 2025
43AQI
43AQI
17th June 2025
32AQI
32AQI
18th June 2025
23AQI
23AQI
19th June 2025
34AQI
34AQI
20th June 2025
20AQI
20AQI
21st June 2025
42AQI
42AQI
22nd June 2025
46AQI
46AQI
23rd June 2025
46AQI
46AQI
24th June 2025
51AQI
51AQI
25th June 2025
40AQI
40AQI
26th June 2025
26AQI
26AQI
27th June 2025
28AQI
28AQI
28th June 2025
28AQI
28AQI
29th June 2025
21AQI
21AQI
30th June 2025
28AQI
28AQI
1st July 2025
35AQI
35AQI
2nd July 2025
34AQI
34AQI
3rd July 2025
43AQI
43AQI
4th July 2025
29AQI
29AQI
5th July 2025
26AQI
26AQI
6th July 2025
44AQI
44AQI
7th July 2025
49AQI
49AQI
8th July 2025
27AQI
27AQI
9th July 2025
31AQI
31AQI
10th July 2025
36AQI
36AQI
11th July 2025
42AQI
42AQI
12th July 2025
49AQI
49AQI
13th July 2025
39AQI
39AQI
14th July 2025
37AQI
37AQI
15th July 2025
43AQI
43AQI
16th July 2025
54AQI
54AQI
17th July 2025
42AQI
42AQI
18th July 2025
21AQI
21AQI
19th July 2025
26AQI
26AQI
20th July 2025
35AQI
35AQI
21st July 2025
31AQI
31AQI
22nd July 2025
19AQI
19AQI
23rd July 2025
22AQI
22AQI
24th July 2025
29AQI
29AQI
25th July 2025
40AQI
40AQI
26th July 2025
56AQI
56AQI
27th July 2025
60AQI
60AQI
28th July 2025
58AQI
58AQI
29th July 2025
53AQI
53AQI
30th July 2025
65AQI
65AQI
31st July 2025
54AQI
54AQI
1st August 2025
26AQI
26AQI
2nd August 2025
36AQI
36AQI
3rd August 2025
61AQI
61AQI
4th August 2025
80AQI
80AQI
5th August 2025
48AQI
48AQI
6th August 2025
36AQI
36AQI
7th August 2025
48AQI
48AQI
8th August 2025
55AQI
55AQI
9th August 2025
60AQI
60AQI
10th August 2025
63AQI
63AQI
11th August 2025
55AQI
55AQI
12th August 2025
54AQI
54AQI
13th August 2025
53AQI
53AQI
14th August 2025
44AQI
44AQI
15th August 2025
23AQI
23AQI
16th August 2025
36AQI
36AQI
17th August 2025
28AQI
28AQI
18th August 2025
16AQI
16AQI
19th August 2025
18AQI
18AQI
20th August 2025
22AQI
22AQI
21st August 2025
22AQI
22AQI
22nd August 2025
30AQI
30AQI
23rd August 2025
29AQI
29AQI
24th August 2025
29AQI
29AQI
25th August 2025
23AQI
23AQI
26th August 2025
15AQI
15AQI
27th August 2025
17AQI
17AQI
28th August 2025
22AQI
22AQI
29th August 2025
18AQI
18AQI
30th August 2025
17AQI
17AQI
31st August 2025
23AQI
23AQI
1st September 2025
29AQI
29AQI
2nd September 2025
30AQI
30AQI
3rd September 2025
26AQI
26AQI
4th September 2025
26AQI
26AQI
5th September 2025
28AQI
28AQI
6th September 2025
27AQI
27AQI
7th September 2025
20AQI
20AQI
8th September 2025
19AQI
19AQI
9th September 2025
19AQI
19AQI
10th September 2025
23AQI
23AQI
11th September 2025
32AQI
32AQI
12th September 2025
24AQI
24AQI
13th September 2025
33AQI
33AQI
14th September 2025
39AQI
39AQI
15th September 2025
29AQI
29AQI
16th September 2025
37AQI
37AQI
17th September 2025
37AQI
37AQI
18th September 2025
33AQI
33AQI
19th September 2025
19AQI
19AQI
20th September 2025
18AQI
18AQI
21st September 2025
24AQI
24AQI
22nd September 2025
23AQI
23AQI
23rd September 2025
28AQI
28AQI
24th September 2025
33AQI
33AQI
25th September 2025
20AQI
20AQI
26th September 2025
20AQI
20AQI
27th September 2025
26AQI
26AQI
28th September 2025
30AQI
30AQI
29th September 2025
28AQI
28AQI
30th September 2025
26AQI
26AQI
1st October 2025
27AQI
27AQI
2nd October 2025
31AQI
31AQI
3rd October 2025
33AQI
33AQI
4th October 2025
41AQI
41AQI
5th October 2025
54AQI
54AQI
6th October 2025
53AQI
53AQI
7th October 2025
34AQI
34AQI
8th October 2025
58AQI
58AQI
9th October 2025
27AQI
27AQI
10th October 2025
26AQI
26AQI
11th October 2025
22AQI
22AQI
12th October 2025
39AQI
39AQI
13th October 2025
25AQI
25AQI
14th October 2025
34AQI
34AQI
15th October 2025
30AQI
30AQI
16th October 2025
30AQI
30AQI
17th October 2025
30AQI
30AQI
18th October 2025
32AQI
32AQI
19th October 2025
42AQI
42AQI
20th October 2025
32AQI
32AQI
21st October 2025
21AQI
21AQI
22nd October 2025
22AQI
22AQI
23rd October 2025
14AQI
14AQI
24th October 2025
15AQI
15AQI
25th October 2025
13AQI
13AQI
26th October 2025
22AQI
22AQI
27th October 2025
22AQI
22AQI
28th October 2025
46AQI
46AQI
29th October 2025
45AQI
45AQI
30th October 2025
37AQI
37AQI
31st October 2025
19AQI
19AQI
1st November 2025
14AQI
14AQI
2nd November 2025
15AQI
15AQI
3rd November 2025
20AQI
20AQI
4th November 2025
14AQI
14AQI
5th November 2025
19AQI
19AQI
6th November 2025
21AQI
21AQI
7th November 2025
28AQI
28AQI
8th November 2025
30AQI
30AQI
9th November 2025
20AQI
20AQI
10th November 2025
20AQI
20AQI
11th November 2025
12AQI
12AQI
12th November 2025
23AQI
23AQI
13th November 2025
20AQI
20AQI
14th November 2025
19AQI
19AQI
15th November 2025
20AQI
20AQI
16th November 2025
20AQI
20AQI
17th November 2025
13AQI
13AQI
18th November 2025
16AQI
16AQI
19th November 2025
42AQI
42AQI
20th November 2025
47AQI
47AQI
21st November 2025
58AQI
58AQI
22nd November 2025
25AQI
25AQI
23rd November 2025
31AQI
31AQI
24th November 2025
30AQI
30AQI
25th November 2025
34AQI
34AQI
26th November 2025
27th November 2025
28th November 2025
29th November 2025
30th November 2025
1st December 2025
2nd December 2025
3rd December 2025
4th December 2025
5th December 2025
6th December 2025
7th December 2025
8th December 2025
9th December 2025
10th December 2025
11th December 2025
12th December 2025
13th December 2025
14th December 2025
15th December 2025
16th December 2025
17th December 2025
18th December 2025
19th December 2025
20th December 2025
21st December 2025
22nd December 2025
23rd December 2025
24th December 2025
25th December 2025
26th December 2025
27th December 2025
28th December 2025
29th December 2025
30th December 2025
31st December 2025
30AQI
31AQI
30AQI
21AQI
20AQI
37AQI
40AQI
36AQI
27AQI
31AQI
24AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202530AQI
31
26
2
28
3
30
31
24
6
24
7
23
8
30
28
3
24
1
299
30
Highest AQI recorded in
July40AQI
Lowest AQI recorded in
May20AQI
202430AQI
29
2
24
5
31
30
31
28
1
29
2
26
5
29
1
30
1
30
27
4
344
21
Highest AQI recorded in
February37AQI
Lowest AQI recorded in
November25AQI
202337AQI
28
3
24
4
31
30
30
1
17
7
4
2
20
10
1
29
2
23
7
30
1
29
23
8
314
43
5
2
Highest AQI recorded in
June62AQI
Lowest AQI recorded in
October26AQI
202231AQI
28
3
20
1
29
2
30
29
2
28
2
24
2
28
27
4
28
2
30
1
303
17
Highest AQI recorded in
January35AQI
Lowest AQI recorded in
August22AQI
202131AQI
25
5
25
3
30
1
30
30
1
30
26
5
29
2
29
1
31
30
28
3
343
21
Highest AQI recorded in
February35AQI
Lowest AQI recorded in
November25AQI
202028AQI
13
21
16
2
30
31
31
30
31
26
4
31
260
6
Highest AQI recorded in
May37AQI
Lowest AQI recorded in
October22AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2023(Avg.)
37AQILeast Polluted Year Recorded
2020(Avg.)
28AQICornwall's annual 2025 AQI (30) shows an average percentage change of -3.8% (improved AQI) compared to previous years: 2020 (28), 2021 (31), 2022 (31), 2023 (37), 2024 (30).
