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+
July Air Quality Analysis
Cornwall, Ontario, Canada
2022
2023
2024
2025
2026
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
1st Jul 2023
128AQILowest AQI recorded on
6th Jul 2022
18AQISame Day Analysis (25th July):
On this day, AQI across the 5 years varied significantly: 2026 ranks 3rd highest AQI at 28 of Good air quality, showing improvement over 2025 and 2023 on the same day.
Day & Night AQI Trend: 24th Jul - 25th Jul 2026
Cornwall, Ontario, Canada
AQI
Day
Night
.
5 AM24th Jul 2026
8 PM
4 AM25th Jul 2026
Day time
Avg. Highest Time
7PM24th Jul
30AQI
Avg. Lowest Time
11AM24th Jul
22AQI
Night time
Avg. Highest Time
2AM25th Jul
32AQI
Avg. Lowest Time
10PM24th Jul
21AQI
In the last 24 hours,
Cornwall's AQI reached its highest point of 32 at 2 AM during the Night, while the lowest point, 21, was recorded at 10 PM during the Night between 24th Jul and 25th Jul 2026.
Day & Night AQI Trend : Jun - Jul 2026
Cornwall, Ontario, Canada
JunJul
26th - 27th27th - 28th28th - 29th29th - 30th30th - 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
Day
Night
26th Jun 2026225 AMAQI
26th Jun 2026236 AMAQI
26th Jun 2026247 AMAQI
26th Jun 2026248 AMAQI
26th Jun 2026269 AMAQI
26th Jun 20262810 AMAQI
26th Jun 20263011 AMAQI
26th Jun 20263012 PMAQI
26th Jun 2026291 PMAQI
26th Jun 2026302 PMAQI
26th Jun 2026283 PMAQI
26th Jun 2026284 PMAQI
26th Jun 2026285 PMAQI
26th Jun 2026286 PMAQI
26th Jun 2026267 PMAQI
26th Jun 2026308 PMAQI
26th Jun 2026329 PMAQI
26th Jun 20263010 PMAQI
26th Jun 20262311 PMAQI
27th Jun 20262612 AMAQI
27th Jun 2026281 AMAQI
27th Jun 2026282 AMAQI
27th Jun 2026293 AMAQI
27th Jun 2026284 AMAQI
20°C17/23°C
27th Jun 2026285 AMAQI
27th Jun 2026296 AMAQI
27th Jun 2026277 AMAQI
27th Jun 2026288 AMAQI
27th Jun 2026309 AMAQI
27th Jun 20263210 AMAQI
27th Jun 20263211 AMAQI
27th Jun 20263212 PMAQI
27th Jun 2026321 PMAQI
27th Jun 2026322 PMAQI
27th Jun 2026313 PMAQI
27th Jun 2026304 PMAQI
27th Jun 2026305 PMAQI
27th Jun 2026286 PMAQI
27th Jun 2026287 PMAQI
27th Jun 2026288 PMAQI
27th Jun 2026279 PMAQI
27th Jun 20262810 PMAQI
27th Jun 20262811 PMAQI
28th Jun 20262612 AMAQI
28th Jun 2026271 AMAQI
28th Jun 2026282 AMAQI
28th Jun 2026283 AMAQI
28th Jun 2026284 AMAQI
21°C14/27°C
28th Jun 2026265 AMAQI
28th Jun 2026286 AMAQI
28th Jun 2026307 AMAQI
28th Jun 2026288 AMAQI
28th Jun 2026289 AMAQI
28th Jun 20262910 AMAQI
28th Jun 20263011 AMAQI
28th Jun 20262912 PMAQI
28th Jun 2026241 PMAQI
28th Jun 2026272 PMAQI
28th Jun 2026263 PMAQI
28th Jun 2026284 PMAQI
28th Jun 2026285 PMAQI
28th Jun 2026266 PMAQI
28th Jun 2026277 PMAQI
28th Jun 2026288 PMAQI
28th Jun 2026279 PMAQI
28th Jun 20262710 PMAQI
28th Jun 20262611 PMAQI
29th Jun 20262412 AMAQI
29th Jun 2026241 AMAQI
29th Jun 2026242 AMAQI
29th Jun 2026243 AMAQI
29th Jun 2026234 AMAQI
22°C14/30°C
29th Jun 2026225 AMAQI
29th Jun 2026226 AMAQI
29th Jun 2026227 AMAQI
29th Jun 2026238 AMAQI
29th Jun 2026249 AMAQI
29th Jun 20262610 AMAQI
29th Jun 20262811 AMAQI
29th Jun 20262812 PMAQI
29th Jun 2026281 PMAQI
29th Jun 2026262 PMAQI
29th Jun 2026263 PMAQI
29th Jun 2026254 PMAQI
29th Jun 2026245 PMAQI
29th Jun 2026256 PMAQI
29th Jun 2026257 PMAQI
29th Jun 2026268 PMAQI
29th Jun 2026279 PMAQI
29th Jun 20262510 PMAQI
29th Jun 20262611 PMAQI
30th Jun 20262412 AMAQI
30th Jun 2026241 AMAQI
30th Jun 2026242 AMAQI
30th Jun 2026253 AMAQI
30th Jun 2026254 AMAQI
22°C14/31°C
30th Jun 2026255 AMAQI
30th Jun 2026266 AMAQI
30th Jun 2026247 AMAQI
30th Jun 2026258 AMAQI
30th Jun 2026279 AMAQI
30th Jun 20262610 AMAQI
30th Jun 20262811 AMAQI
30th Jun 20262612 PMAQI
30th Jun 2026281 PMAQI
30th Jun 2026262 PMAQI
30th Jun 2026263 PMAQI
30th Jun 2026264 PMAQI
30th Jun 2026265 PMAQI
30th Jun 2026286 PMAQI
30th Jun 2026257 PMAQI
30th Jun 2026238 PMAQI
30th Jun 2026229 PMAQI
30th Jun 20262410 PMAQI
30th Jun 20261911 PMAQI
1st Jul 20261912 AMAQI
1st Jul 2026251 AMAQI
1st Jul 2026212 AMAQI
1st Jul 2026253 AMAQI
1st Jul 2026274 AMAQI
21°C15/29°C
1st Jul 2026255 AMAQI
1st Jul 2026266 AMAQI
1st Jul 2026277 AMAQI
1st Jul 2026288 AMAQI
1st Jul 2026269 AMAQI
1st Jul 20263010 AMAQI
1st Jul 20263011 AMAQI
1st Jul 20262812 PMAQI
1st Jul 2026301 PMAQI
1st Jul 2026282 PMAQI
1st Jul 2026283 PMAQI
1st Jul 2026344 PMAQI
1st Jul 2026445 PMAQI
1st Jul 2026526 PMAQI
1st Jul 2026417 PMAQI
1st Jul 2026268 PMAQI
1st Jul 2026279 PMAQI
1st Jul 20262210 PMAQI
1st Jul 20262211 PMAQI
2nd Jul 20267012 AMAQI
2nd Jul 2026221 AMAQI
2nd Jul 2026232 AMAQI
2nd Jul 2026243 AMAQI
2nd Jul 2026254 AMAQI
26°C21/34°C
2nd Jul 2026275 AMAQI
2nd Jul 2026276 AMAQI
2nd Jul 2026287 AMAQI
2nd Jul 2026288 AMAQI
2nd Jul 2026279 AMAQI
2nd Jul 20262810 AMAQI
2nd Jul 20263011 AMAQI
2nd Jul 20263012 PMAQI
2nd Jul 2026261 PMAQI
2nd Jul 2026282 PMAQI
2nd Jul 2026263 PMAQI
2nd Jul 2026294 PMAQI
2nd Jul 2026265 PMAQI
2nd Jul 2026286 PMAQI
2nd Jul 2026287 PMAQI
2nd Jul 2026258 PMAQI
2nd Jul 2026269 PMAQI
2nd Jul 20262410 PMAQI
2nd Jul 20262511 PMAQI
3rd Jul 20262812 AMAQI
3rd Jul 2026301 AMAQI
3rd Jul 2026302 AMAQI
3rd Jul 2026293 AMAQI
3rd Jul 2026284 AMAQI
27°C21/33°C
3rd Jul 2026275 AMAQI
3rd Jul 2026286 AMAQI
3rd Jul 2026297 AMAQI
3rd Jul 2026288 AMAQI
3rd Jul 2026299 AMAQI
3rd Jul 20263010 AMAQI
3rd Jul 20263111 AMAQI
3rd Jul 20263012 PMAQI
3rd Jul 2026311 PMAQI
3rd Jul 2026302 PMAQI
3rd Jul 2026283 PMAQI
3rd Jul 2026294 PMAQI
3rd Jul 2026305 PMAQI
3rd Jul 2026286 PMAQI
3rd Jul 2026307 PMAQI
3rd Jul 2026278 PMAQI
3rd Jul 2026279 PMAQI
3rd Jul 20262410 PMAQI
3rd Jul 20262411 PMAQI
4th Jul 20262612 AMAQI
4th Jul 2026271 AMAQI
4th Jul 2026292 AMAQI
4th Jul 2026283 AMAQI
4th Jul 2026264 AMAQI
26°C21/33°C
4th Jul 2026265 AMAQI
4th Jul 2026276 AMAQI
4th Jul 2026267 AMAQI
4th Jul 2026288 AMAQI
4th Jul 2026269 AMAQI
4th Jul 20262610 AMAQI
4th Jul 20262711 AMAQI
4th Jul 20262912 PMAQI
4th Jul 2026241 PMAQI
4th Jul 2026262 PMAQI
4th Jul 2026233 PMAQI
4th Jul 2026264 PMAQI
4th Jul 2026245 PMAQI
4th Jul 2026246 PMAQI
4th Jul 2026247 PMAQI
4th Jul 2026208 PMAQI
4th Jul 2026219 PMAQI
4th Jul 20262010 PMAQI
4th Jul 20262111 PMAQI
5th Jul 20262012 AMAQI
5th Jul 2026241 AMAQI
5th Jul 2026282 AMAQI
5th Jul 2026283 AMAQI
5th Jul 2026264 AMAQI
24°C19/29°C
5th Jul 2026265 AMAQI
5th Jul 2026266 AMAQI
5th Jul 2026247 AMAQI
5th Jul 2026288 AMAQI
5th Jul 2026249 AMAQI
5th Jul 20262810 AMAQI
5th Jul 20262911 AMAQI
5th Jul 20262712 PMAQI
5th Jul 2026261 PMAQI
5th Jul 2026262 PMAQI
5th Jul 2026243 PMAQI
5th Jul 2026284 PMAQI
5th Jul 2026275 PMAQI
5th Jul 2026266 PMAQI
5th Jul 2026277 PMAQI
5th Jul 2026228 PMAQI
5th Jul 2026219 PMAQI
5th Jul 20262010 PMAQI
5th Jul 20262111 PMAQI
6th Jul 20262012 AMAQI
6th Jul 2026241 AMAQI
6th Jul 2026272 AMAQI
6th Jul 2026283 AMAQI
6th Jul 2026224 AMAQI
21°C13/28°C
6th Jul 2026205 AMAQI
6th Jul 2026226 AMAQI
6th Jul 2026297 AMAQI
6th Jul 2026308 AMAQI
6th Jul 2026299 AMAQI
6th Jul 20263010 AMAQI
6th Jul 20263011 AMAQI
6th Jul 20263212 PMAQI
6th Jul 2026311 PMAQI
6th Jul 2026322 PMAQI
6th Jul 2026303 PMAQI
6th Jul 2026314 PMAQI
6th Jul 2026325 PMAQI
6th Jul 2026306 PMAQI
6th Jul 2026307 PMAQI
6th Jul 2026288 PMAQI
6th Jul 2026269 PMAQI
6th Jul 20262510 PMAQI
6th Jul 20262411 PMAQI
7th Jul 20262412 AMAQI
7th Jul 2026261 AMAQI
7th Jul 2026312 AMAQI
7th Jul 2026283 AMAQI
7th Jul 2026314 AMAQI
22°C13/30°C
7th Jul 2026305 AMAQI
7th Jul 2026306 AMAQI
7th Jul 2026307 AMAQI
7th Jul 2026308 AMAQI
7th Jul 2026299 AMAQI
7th Jul 20262810 AMAQI
7th Jul 20263311 AMAQI
7th Jul 20263312 PMAQI
7th Jul 2026321 PMAQI
7th Jul 2026302 PMAQI
7th Jul 2026283 PMAQI
7th Jul 2026304 PMAQI
7th Jul 2026305 PMAQI
7th Jul 2026316 PMAQI
7th Jul 2026307 PMAQI
7th Jul 2026288 PMAQI
7th Jul 2026289 PMAQI
7th Jul 20262710 PMAQI
7th Jul 20262611 PMAQI
8th Jul 20262412 AMAQI
8th Jul 2026281 AMAQI
8th Jul 2026302 AMAQI
8th Jul 2026293 AMAQI
8th Jul 2026254 AMAQI
23°C15/30°C
8th Jul 2026275 AMAQI
8th Jul 2026226 AMAQI
8th Jul 2026207 AMAQI
8th Jul 2026238 AMAQI
8th Jul 2026239 AMAQI
8th Jul 20263010 AMAQI
8th Jul 20263211 AMAQI
8th Jul 20263212 PMAQI
8th Jul 2026321 PMAQI
8th Jul 2026302 PMAQI
8th Jul 2026293 PMAQI
8th Jul 2026324 PMAQI
8th Jul 2026285 PMAQI
8th Jul 2026306 PMAQI
8th Jul 2026307 PMAQI
8th Jul 2026258 PMAQI
8th Jul 2026259 PMAQI
8th Jul 20262310 PMAQI
8th Jul 20262611 PMAQI
9th Jul 20262212 AMAQI
9th Jul 2026261 AMAQI
9th Jul 2026272 AMAQI
9th Jul 2026283 AMAQI
9th Jul 2026284 AMAQI
25°C18/32°C
9th Jul 2026265 AMAQI
9th Jul 2026276 AMAQI
9th Jul 2026287 AMAQI
9th Jul 2026288 AMAQI
9th Jul 2026279 AMAQI
9th Jul 20263010 AMAQI
9th Jul 20263011 AMAQI
9th Jul 20263112 PMAQI
9th Jul 2026301 PMAQI
9th Jul 2026292 PMAQI
9th Jul 2026283 PMAQI
9th Jul 2026294 PMAQI
9th Jul 2026305 PMAQI
9th Jul 2026306 PMAQI
9th Jul 2026317 PMAQI
9th Jul 2026318 PMAQI
9th Jul 2026329 PMAQI
9th Jul 20262910 PMAQI
9th Jul 20262911 PMAQI
10th Jul 20262612 AMAQI
10th Jul 2026261 AMAQI
10th Jul 2026242 AMAQI
10th Jul 2026273 AMAQI
10th Jul 2026324 AMAQI
23°C19/31°C
10th Jul 2026325 AMAQI
10th Jul 2026346 AMAQI
10th Jul 2026347 AMAQI
10th Jul 2026328 AMAQI
10th Jul 2026339 AMAQI
10th Jul 20263510 AMAQI
10th Jul 20263711 AMAQI
10th Jul 20263712 PMAQI
10th Jul 2026341 PMAQI
10th Jul 2026332 PMAQI
10th Jul 2026313 PMAQI
10th Jul 2026594 PMAQI
10th Jul 2026845 PMAQI
10th Jul 2026796 PMAQI
10th Jul 2026727 PMAQI
10th Jul 2026648 PMAQI
10th Jul 2026629 PMAQI
10th Jul 20265610 PMAQI
10th Jul 20266211 PMAQI
11th Jul 20266212 AMAQI
11th Jul 2026551 AMAQI
11th Jul 2026432 AMAQI
11th Jul 2026473 AMAQI
11th Jul 2026414 AMAQI
23°C17/28°C
11th Jul 2026365 AMAQI
11th Jul 2026336 AMAQI
11th Jul 2026327 AMAQI
11th Jul 2026328 AMAQI
11th Jul 2026349 AMAQI
11th Jul 20263210 AMAQI
11th Jul 20263411 AMAQI
11th Jul 20263412 PMAQI
11th Jul 2026341 PMAQI
11th Jul 2026342 PMAQI
11th Jul 2026313 PMAQI
11th Jul 2026314 PMAQI
11th Jul 2026325 PMAQI
11th Jul 2026316 PMAQI
11th Jul 2026327 PMAQI
11th Jul 2026398 PMAQI
11th Jul 2026589 PMAQI
11th Jul 20266510 PMAQI
11th Jul 20267211 PMAQI
12th Jul 20267612 AMAQI
12th Jul 2026671 AMAQI
12th Jul 2026622 AMAQI
12th Jul 2026643 AMAQI
12th Jul 2026604 AMAQI
21°C14/27°C
12th Jul 2026565 AMAQI
12th Jul 2026476 AMAQI
12th Jul 2026407 AMAQI
12th Jul 2026408 AMAQI
12th Jul 2026469 AMAQI
12th Jul 20266210 AMAQI
12th Jul 20268111 AMAQI
12th Jul 20269212 PMAQI
12th Jul 2026941 PMAQI
12th Jul 2026902 PMAQI
12th Jul 2026743 PMAQI
12th Jul 2026594 PMAQI
12th Jul 2026585 PMAQI
12th Jul 2026666 PMAQI
12th Jul 2026677 PMAQI
12th Jul 2026708 PMAQI
12th Jul 2026749 PMAQI
12th Jul 20267410 PMAQI
12th Jul 20267111 PMAQI
13th Jul 20267512 AMAQI
13th Jul 2026701 AMAQI
13th Jul 2026702 AMAQI
13th Jul 2026653 AMAQI
13th Jul 2026624 AMAQI
21°C13/30°C
13th Jul 2026645 AMAQI
13th Jul 2026626 AMAQI
13th Jul 2026627 AMAQI
13th Jul 2026588 AMAQI
13th Jul 2026569 AMAQI
13th Jul 20265410 AMAQI
13th Jul 20265111 AMAQI
13th Jul 20264312 PMAQI
13th Jul 2026401 PMAQI
13th Jul 2026452 PMAQI
13th Jul 2026503 PMAQI
13th Jul 2026524 PMAQI
13th Jul 2026505 PMAQI
13th Jul 2026496 PMAQI
13th Jul 2026387 PMAQI
13th Jul 2026418 PMAQI
13th Jul 2026419 PMAQI
13th Jul 20264410 PMAQI
13th Jul 20264511 PMAQI
14th Jul 20264912 AMAQI
14th Jul 2026491 AMAQI
14th Jul 2026502 AMAQI
14th Jul 2026403 AMAQI
14th Jul 2026454 AMAQI
22°C15/30°C
14th Jul 2026465 AMAQI
14th Jul 2026466 AMAQI
14th Jul 2026407 AMAQI
14th Jul 2026438 AMAQI
14th Jul 2026389 AMAQI
14th Jul 20263810 AMAQI
14th Jul 20263811 AMAQI
14th Jul 20264012 PMAQI
14th Jul 2026421 PMAQI
14th Jul 2026472 PMAQI
14th Jul 2026503 PMAQI
14th Jul 2026464 PMAQI
14th Jul 2026445 PMAQI
14th Jul 2026406 PMAQI
14th Jul 2026447 PMAQI
14th Jul 2026398 PMAQI
14th Jul 2026619 PMAQI
14th Jul 20268210 PMAQI
14th Jul 20267211 PMAQI
15th Jul 20267012 AMAQI
15th Jul 2026701 AMAQI
15th Jul 2026672 AMAQI
15th Jul 2026663 AMAQI
15th Jul 2026704 AMAQI
27°C20/34°C
15th Jul 2026745 AMAQI
15th Jul 2026766 AMAQI
15th Jul 2026747 AMAQI
15th Jul 2026698 AMAQI
15th Jul 2026699 AMAQI
15th Jul 20266710 AMAQI
15th Jul 20266711 AMAQI
15th Jul 20266012 PMAQI
15th Jul 2026551 PMAQI
15th Jul 2026522 PMAQI
15th Jul 2026493 PMAQI
15th Jul 2026364 PMAQI
15th Jul 2026375 PMAQI
15th Jul 2026306 PMAQI
15th Jul 2026327 PMAQI
15th Jul 2026328 PMAQI
15th Jul 2026329 PMAQI
15th Jul 20263210 PMAQI
15th Jul 20263511 PMAQI
16th Jul 20264312 AMAQI
16th Jul 2026501 AMAQI
16th Jul 2026522 AMAQI
16th Jul 2026563 AMAQI
16th Jul 2026574 AMAQI
25°C21/29°C
16th Jul 2026605 AMAQI
16th Jul 2026666 AMAQI
16th Jul 2026707 AMAQI
16th Jul 2026768 AMAQI
16th Jul 2026819 AMAQI
16th Jul 20266610 AMAQI
16th Jul 20264611 AMAQI
16th Jul 20265712 PMAQI
16th Jul 2026641 PMAQI
16th Jul 2026702 PMAQI
16th Jul 2026543 PMAQI
16th Jul 2026304 PMAQI
16th Jul 2026305 PMAQI
16th Jul 2026306 PMAQI
16th Jul 2026267 PMAQI
16th Jul 2026288 PMAQI
16th Jul 2026309 PMAQI
16th Jul 20262710 PMAQI
16th Jul 20262811 PMAQI
17th Jul 20262512 AMAQI
17th Jul 2026261 AMAQI
17th Jul 2026262 AMAQI
17th Jul 2026273 AMAQI
17th Jul 2026274 AMAQI
22°C17/29°C
17th Jul 2026385 AMAQI
17th Jul 2026346 AMAQI
17th Jul 2026287 AMAQI
17th Jul 2026388 AMAQI
17th Jul 2026389 AMAQI
17th Jul 20264110 AMAQI
17th Jul 20263611 AMAQI
17th Jul 20262612 PMAQI
17th Jul 2026281 PMAQI
17th Jul 2026412 PMAQI
17th Jul 2026623 PMAQI
17th Jul 2026414 PMAQI
17th Jul 2026425 PMAQI
17th Jul 2026396 PMAQI
17th Jul 2026377 PMAQI
17th Jul 2026298 PMAQI
17th Jul 2026369 PMAQI
17th Jul 20263910 PMAQI
17th Jul 20263011 PMAQI
18th Jul 20262412 AMAQI
18th Jul 2026361 AMAQI
18th Jul 2026402 AMAQI
18th Jul 2026283 AMAQI
18th Jul 2026384 AMAQI
20°C12/28°C
18th Jul 2026365 AMAQI
18th Jul 2026366 AMAQI
18th Jul 2026387 AMAQI
18th Jul 2026328 AMAQI
18th Jul 2026349 AMAQI
18th Jul 20262110 AMAQI
18th Jul 20262811 AMAQI
18th Jul 20262612 PMAQI
18th Jul 2026361 PMAQI
18th Jul 2026622 PMAQI
18th Jul 2026703 PMAQI
18th Jul 2026644 PMAQI
18th Jul 2026665 PMAQI
18th Jul 2026606 PMAQI
18th Jul 2026587 PMAQI
18th Jul 2026828 PMAQI
18th Jul 2026839 PMAQI
18th Jul 20265610 PMAQI
18th Jul 20266411 PMAQI
19th Jul 20264412 AMAQI
19th Jul 2026341 AMAQI
19th Jul 2026252 AMAQI
19th Jul 2026253 AMAQI
19th Jul 2026344 AMAQI
20°C16/24°C
19th Jul 2026485 AMAQI
19th Jul 2026596 AMAQI
19th Jul 2026547 AMAQI
19th Jul 2026448 AMAQI
19th Jul 2026319 AMAQI
19th Jul 20263610 AMAQI
19th Jul 20263311 AMAQI
19th Jul 20263912 PMAQI
19th Jul 2026401 PMAQI
19th Jul 2026402 PMAQI
19th Jul 2026483 PMAQI
19th Jul 2026454 PMAQI
19th Jul 2026395 PMAQI
19th Jul 2026366 PMAQI
19th Jul 2026347 PMAQI
19th Jul 2026288 PMAQI
19th Jul 2026279 PMAQI
19th Jul 20262310 PMAQI
19th Jul 20262411 PMAQI
20th Jul 20266212 AMAQI
20th Jul 2026421 AMAQI
20th Jul 2026462 AMAQI
20th Jul 2026453 AMAQI
20th Jul 2026484 AMAQI
19°C13/24°C
20th Jul 2026425 AMAQI
20th Jul 2026396 AMAQI
20th Jul 2026507 AMAQI
20th Jul 2026268 AMAQI
20th Jul 2026319 AMAQI
20th Jul 20262410 AMAQI
20th Jul 20262611 AMAQI
20th Jul 20262412 PMAQI
20th Jul 2026241 PMAQI
20th Jul 2026272 PMAQI
20th Jul 2026213 PMAQI
20th Jul 2026244 PMAQI
20th Jul 2026245 PMAQI
20th Jul 2026236 PMAQI
20th Jul 2026277 PMAQI
20th Jul 2026278 PMAQI
20th Jul 2026429 PMAQI
20th Jul 20263410 PMAQI
21st Jul 20263412 AMAQI
21st Jul 2026411 AMAQI
21st Jul 2026302 AMAQI
21st Jul 2026343 AMAQI
21st Jul 2026254 AMAQI
20°C13/28°C
21st Jul 2026525 AMAQI
21st Jul 2026406 AMAQI
21st Jul 2026587 AMAQI
21st Jul 2026318 AMAQI
21st Jul 2026469 AMAQI
21st Jul 20264810 AMAQI
21st Jul 20265411 AMAQI
21st Jul 20266212 PMAQI
21st Jul 2026691 PMAQI
21st Jul 2026712 PMAQI
21st Jul 2026723 PMAQI
21st Jul 2026704 PMAQI
21st Jul 2026705 PMAQI
21st Jul 2026666 PMAQI
21st Jul 2026567 PMAQI
21st Jul 2026498 PMAQI
21st Jul 2026409 PMAQI
21st Jul 20263210 PMAQI
21st Jul 20263411 PMAQI
22nd Jul 20263012 AMAQI
22nd Jul 2026281 AMAQI
22nd Jul 2026232 AMAQI
22nd Jul 2026193 AMAQI
22nd Jul 2026244 AMAQI
23°C16/32°C
22nd Jul 2026245 AMAQI
22nd Jul 2026236 AMAQI
22nd Jul 2026307 AMAQI
22nd Jul 2026278 AMAQI
22nd Jul 2026259 AMAQI
22nd Jul 20262810 AMAQI
22nd Jul 20262611 AMAQI
22nd Jul 20262412 PMAQI
22nd Jul 2026241 PMAQI
22nd Jul 2026252 PMAQI
22nd Jul 2026223 PMAQI
22nd Jul 2026234 PMAQI
22nd Jul 2026225 PMAQI
22nd Jul 2026246 PMAQI
22nd Jul 2026257 PMAQI
22nd Jul 2026248 PMAQI
22nd Jul 2026259 PMAQI
22nd Jul 20262210 PMAQI
22nd Jul 20262011 PMAQI
23rd Jul 20261812 AMAQI
23rd Jul 2026241 AMAQI
23rd Jul 2026332 AMAQI
23rd Jul 2026243 AMAQI
23rd Jul 2026204 AMAQI
18°C14/20°C
23rd Jul 2026205 AMAQI
23rd Jul 2026226 AMAQI
23rd Jul 2026207 AMAQI
23rd Jul 2026278 AMAQI
23rd Jul 2026229 AMAQI
23rd Jul 20262610 AMAQI
23rd Jul 20262711 AMAQI
23rd Jul 20262412 PMAQI
23rd Jul 2026231 PMAQI
23rd Jul 2026222 PMAQI
23rd Jul 2026223 PMAQI
23rd Jul 2026244 PMAQI
23rd Jul 2026425 PMAQI
23rd Jul 2026546 PMAQI
23rd Jul 2026467 PMAQI
23rd Jul 2026438 PMAQI
23rd Jul 2026359 PMAQI
23rd Jul 20262410 PMAQI
23rd Jul 20262511 PMAQI
24th Jul 20262112 AMAQI
24th Jul 2026321 AMAQI
24th Jul 2026252 AMAQI
24th Jul 2026203 AMAQI
24th Jul 2026264 AMAQI
18°C11/27°C
24th Jul 2026265 AMAQI
24th Jul 2026256 AMAQI
24th Jul 2026257 AMAQI
24th Jul 2026268 AMAQI
24th Jul 2026269 AMAQI
24th Jul 20262310 AMAQI
24th Jul 20262211 AMAQI
24th Jul 20262512 PMAQI
24th Jul 2026261 PMAQI
24th Jul 2026252 PMAQI
24th Jul 2026233 PMAQI
24th Jul 2026264 PMAQI
24th Jul 2026265 PMAQI
24th Jul 2026246 PMAQI
24th Jul 2026307 PMAQI
24th Jul 2026298 PMAQI
24th Jul 2026299 PMAQI
24th Jul 20262110 PMAQI
24th Jul 20262811 PMAQI
25th Jul 20262912 AMAQI
25th Jul 2026281 AMAQI
25th Jul 2026322 AMAQI
25th Jul 2026323 AMAQI
25th Jul 2026254 AMAQI
20°C13/28°C
25th Jul 2026235 AMAQI
5 AM25th Jul 2026226 AMAQI
25th Jul 2026307 AMAQI
25th Jul 2026308 AMAQI
25th Jul 2026309 AMAQI
25th Jul 20263010 AMAQI
25th Jul 20262211 AMAQI
25th Jul 20262312 PMAQI
12 PM25th Jul 2026281 PMAQI
25th Jul 2026272 PMAQI
25th Jul 2026263 PMAQI
25th Jul 2026304 PMAQI
25th Jul 2026305 PMAQI
25th Jul 2026216 PMAQI
25th Jul 2026217 PMAQI
25th Jul 2026248 PMAQI
8 PM25th Jul 2026229 PMAQI
25th Jul 20263710 PMAQI
25th Jul 20265011 PMAQI
12 AM
4 AM
21°C12/29°C
Day time
Avg. Highest Time
2 PM - 8 PM
36AQI
7 hours / Day
210 hours / Month
Avg. Lowest Time
5 AM - 1 PM
34AQI
9 hours / Day
270 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 2 PM to 8 PM (Avg. 36), while the lowest AQI was between 5 AM to 1 PM (Avg. 34).
Night time
Avg. Highest Time
12 AM - 9 PM
35AQI
6 hours / Day
180 hours / Month
Avg. Lowest Time
3 AM - 4 AM
33AQI
2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 9 PM (Avg. 35), while the lowest AQI was between 3 AM to 4 AM (Avg. 33).
2026 Days Vs Air Quality
Cornwall, Ontario, Canada
2026
94%
190
6%
13
Total number of days with different AQI categories in last 206 days in 2026 (159 days remaining)
Good
190 DaysModerate
13 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 94%
Health Risk Level:
Very Low
In 2026, 94% of 206 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 2026
AQI (US)
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 2026
-1th undefined 2026
-1th undefined 2026
-1th undefined 2026
1st January 2026
12AQI (US)
12AQI (US)
2nd January 2026
18AQI (US)
18AQI (US)
3rd January 2026
11AQI (US)
11AQI (US)
4th January 2026
20AQI (US)
20AQI (US)
5th January 2026
36AQI (US)
36AQI (US)
6th January 2026
58AQI (US)
58AQI (US)
7th January 2026
61AQI (US)
61AQI (US)
8th January 2026
50AQI (US)
50AQI (US)
9th January 2026
38AQI (US)
38AQI (US)
10th January 2026
12AQI (US)
12AQI (US)
11th January 2026
16AQI (US)
16AQI (US)
12th January 2026
14AQI (US)
14AQI (US)
13th January 2026
39AQI (US)
39AQI (US)
14th January 2026
32AQI (US)
32AQI (US)
15th January 2026
14AQI (US)
14AQI (US)
16th January 2026
10AQI (US)
10AQI (US)
17th January 2026
30AQI (US)
30AQI (US)
18th January 2026
23AQI (US)
23AQI (US)
19th January 2026
24AQI (US)
24AQI (US)
20th January 2026
15AQI (US)
15AQI (US)
21st January 2026
20AQI (US)
20AQI (US)
22nd January 2026
49AQI (US)
49AQI (US)
23rd January 2026
54AQI (US)
54AQI (US)
24th January 2026
46AQI (US)
46AQI (US)
25th January 2026
46AQI (US)
46AQI (US)
26th January 2026
48AQI (US)
48AQI (US)
27th January 2026
44AQI (US)
44AQI (US)
28th January 2026
46AQI (US)
46AQI (US)
29th January 2026
51AQI (US)
51AQI (US)
30th January 2026
49AQI (US)
49AQI (US)
31st January 2026
45AQI (US)
45AQI (US)
1st February 2026
47AQI (US)
47AQI (US)
2nd February 2026
49AQI (US)
49AQI (US)
3rd February 2026
50AQI (US)
50AQI (US)
4th February 2026
53AQI (US)
53AQI (US)
5th February 2026
49AQI (US)
49AQI (US)
6th February 2026
40AQI (US)
40AQI (US)
7th February 2026
38AQI (US)
38AQI (US)
8th February 2026
46AQI (US)
46AQI (US)
9th February 2026
46AQI (US)
46AQI (US)
10th February 2026
46AQI (US)
46AQI (US)
11th February 2026
42AQI (US)
42AQI (US)
12th February 2026
42AQI (US)
42AQI (US)
13th February 2026
48AQI (US)
48AQI (US)
14th February 2026
50AQI (US)
50AQI (US)
15th February 2026
39AQI (US)
39AQI (US)
16th February 2026
42AQI (US)
42AQI (US)
17th February 2026
45AQI (US)
45AQI (US)
18th February 2026
42AQI (US)
42AQI (US)
19th February 2026
40AQI (US)
40AQI (US)
20th February 2026
40AQI (US)
40AQI (US)
21st February 2026
36AQI (US)
36AQI (US)
22nd February 2026
36AQI (US)
36AQI (US)
23rd February 2026
39AQI (US)
39AQI (US)
24th February 2026
46AQI (US)
46AQI (US)
25th February 2026
41AQI (US)
41AQI (US)
26th February 2026
35AQI (US)
35AQI (US)
27th February 2026
35AQI (US)
35AQI (US)
28th February 2026
38AQI (US)
38AQI (US)
1st March 2026
39AQI (US)
39AQI (US)
2nd March 2026
54AQI (US)
54AQI (US)
3rd March 2026
47AQI (US)
47AQI (US)
4th March 2026
45AQI (US)
45AQI (US)
5th March 2026
42AQI (US)
42AQI (US)
6th March 2026
37AQI (US)
37AQI (US)
7th March 2026
40AQI (US)
40AQI (US)
8th March 2026
38AQI (US)
38AQI (US)
9th March 2026
40AQI (US)
40AQI (US)
10th March 2026
32AQI (US)
32AQI (US)
11th March 2026
45AQI (US)
45AQI (US)
12th March 2026
41AQI (US)
41AQI (US)
13th March 2026
39AQI (US)
39AQI (US)
14th March 2026
36AQI (US)
36AQI (US)
15th March 2026
35AQI (US)
35AQI (US)
16th March 2026
37AQI (US)
37AQI (US)
17th March 2026
33AQI (US)
33AQI (US)
18th March 2026
32AQI (US)
32AQI (US)
19th March 2026
31AQI (US)
31AQI (US)
20th March 2026
36AQI (US)
36AQI (US)
21st March 2026
36AQI (US)
36AQI (US)
22nd March 2026
36AQI (US)
36AQI (US)
23rd March 2026
42AQI (US)
42AQI (US)
24th March 2026
36AQI (US)
36AQI (US)
25th March 2026
32AQI (US)
32AQI (US)
26th March 2026
27AQI (US)
27AQI (US)
27th March 2026
28AQI (US)
28AQI (US)
28th March 2026
32AQI (US)
32AQI (US)
29th March 2026
30AQI (US)
30AQI (US)
30th March 2026
27AQI (US)
27AQI (US)
31st March 2026
24AQI (US)
24AQI (US)
1st April 2026
31AQI (US)
31AQI (US)
2nd April 2026
31AQI (US)
31AQI (US)
3rd April 2026
27AQI (US)
27AQI (US)
4th April 2026
32AQI (US)
32AQI (US)
5th April 2026
30AQI (US)
30AQI (US)
6th April 2026
28AQI (US)
28AQI (US)
7th April 2026
26AQI (US)
26AQI (US)
8th April 2026
31AQI (US)
31AQI (US)
9th April 2026
28AQI (US)
28AQI (US)
10th April 2026
30AQI (US)
30AQI (US)
11th April 2026
31AQI (US)
31AQI (US)
12th April 2026
27AQI (US)
27AQI (US)
13th April 2026
32AQI (US)
32AQI (US)
14th April 2026
32AQI (US)
32AQI (US)
15th April 2026
33AQI (US)
33AQI (US)
16th April 2026
30AQI (US)
30AQI (US)
17th April 2026
18th April 2026
28AQI (US)
28AQI (US)
19th April 2026
33AQI (US)
33AQI (US)
20th April 2026
28AQI (US)
28AQI (US)
21st April 2026
26AQI (US)
26AQI (US)
22nd April 2026
23rd April 2026
23AQI (US)
23AQI (US)
24th April 2026
26AQI (US)
26AQI (US)
25th April 2026
28AQI (US)
28AQI (US)
26th April 2026
32AQI (US)
32AQI (US)
27th April 2026
27AQI (US)
27AQI (US)
28th April 2026
24AQI (US)
24AQI (US)
29th April 2026
23AQI (US)
23AQI (US)
30th April 2026
26AQI (US)
26AQI (US)
1st May 2026
27AQI (US)
27AQI (US)
2nd May 2026
24AQI (US)
24AQI (US)
3rd May 2026
21AQI (US)
21AQI (US)
4th May 2026
30AQI (US)
30AQI (US)
5th May 2026
32AQI (US)
32AQI (US)
6th May 2026
30AQI (US)
30AQI (US)
7th May 2026
28AQI (US)
28AQI (US)
8th May 2026
28AQI (US)
28AQI (US)
9th May 2026
10th May 2026
33AQI (US)
33AQI (US)
11th May 2026
30AQI (US)
30AQI (US)
12th May 2026
26AQI (US)
26AQI (US)
13th May 2026
27AQI (US)
27AQI (US)
14th May 2026
23AQI (US)
23AQI (US)
15th May 2026
46AQI (US)
46AQI (US)
16th May 2026
53AQI (US)
53AQI (US)
17th May 2026
56AQI (US)
56AQI (US)
18th May 2026
58AQI (US)
58AQI (US)
19th May 2026
55AQI (US)
55AQI (US)
20th May 2026
50AQI (US)
50AQI (US)
21st May 2026
44AQI (US)
44AQI (US)
22nd May 2026
44AQI (US)
44AQI (US)
23rd May 2026
50AQI (US)
50AQI (US)
24th May 2026
48AQI (US)
48AQI (US)
25th May 2026
45AQI (US)
45AQI (US)
26th May 2026
28AQI (US)
28AQI (US)
27th May 2026
26AQI (US)
26AQI (US)
28th May 2026
20AQI (US)
20AQI (US)
29th May 2026
20AQI (US)
20AQI (US)
30th May 2026
21AQI (US)
21AQI (US)
31st May 2026
28AQI (US)
28AQI (US)
1st June 2026
28AQI (US)
28AQI (US)
2nd June 2026
25AQI (US)
25AQI (US)
3rd June 2026
24AQI (US)
24AQI (US)
4th June 2026
24AQI (US)
24AQI (US)
5th June 2026
28AQI (US)
28AQI (US)
6th June 2026
25AQI (US)
25AQI (US)
7th June 2026
22AQI (US)
22AQI (US)
8th June 2026
26AQI (US)
26AQI (US)
9th June 2026
25AQI (US)
25AQI (US)
10th June 2026
27AQI (US)
27AQI (US)
11th June 2026
26AQI (US)
26AQI (US)
12th June 2026
26AQI (US)
26AQI (US)
13th June 2026
23AQI (US)
23AQI (US)
14th June 2026
23AQI (US)
23AQI (US)
15th June 2026
24AQI (US)
24AQI (US)
16th June 2026
26AQI (US)
26AQI (US)
17th June 2026
27AQI (US)
27AQI (US)
18th June 2026
26AQI (US)
26AQI (US)
19th June 2026
24AQI (US)
24AQI (US)
20th June 2026
24AQI (US)
24AQI (US)
21st June 2026
21AQI (US)
21AQI (US)
22nd June 2026
24AQI (US)
24AQI (US)
23rd June 2026
24AQI (US)
24AQI (US)
24th June 2026
23AQI (US)
23AQI (US)
25th June 2026
24AQI (US)
24AQI (US)
26th June 2026
27AQI (US)
27AQI (US)
27th June 2026
29AQI (US)
29AQI (US)
28th June 2026
28AQI (US)
28AQI (US)
29th June 2026
25AQI (US)
25AQI (US)
30th June 2026
25AQI (US)
25AQI (US)
1st July 2026
29AQI (US)
29AQI (US)
2nd July 2026
28AQI (US)
28AQI (US)
3rd July 2026
28AQI (US)
28AQI (US)
4th July 2026
25AQI (US)
25AQI (US)
5th July 2026
25AQI (US)
25AQI (US)
6th July 2026
28AQI (US)
28AQI (US)
7th July 2026
29AQI (US)
29AQI (US)
8th July 2026
27AQI (US)
27AQI (US)
9th July 2026
28AQI (US)
28AQI (US)
10th July 2026
44AQI (US)
44AQI (US)
11th July 2026
40AQI (US)
40AQI (US)
12th July 2026
66AQI (US)
66AQI (US)
13th July 2026
54AQI (US)
54AQI (US)
14th July 2026
47AQI (US)
47AQI (US)
15th July 2026
55AQI (US)
55AQI (US)
16th July 2026
50AQI (US)
50AQI (US)
17th July 2026
35AQI (US)
35AQI (US)
18th July 2026
46AQI (US)
46AQI (US)
19th July 2026
37AQI (US)
37AQI (US)
20th July 2026
34AQI (US)
34AQI (US)
21st July 2026
50AQI (US)
50AQI (US)
22nd July 2026
24AQI (US)
24AQI (US)
23rd July 2026
28AQI (US)
28AQI (US)
24th July 2026
25AQI (US)
25AQI (US)
25th July 2026
28AQI (US)
28AQI (US)
26th July 2026
27th July 2026
28th July 2026
29th July 2026
30th July 2026
31st July 2026
1st August 2026
2nd August 2026
3rd August 2026
4th August 2026
5th August 2026
6th August 2026
7th August 2026
8th August 2026
9th August 2026
10th August 2026
11th August 2026
12th August 2026
13th August 2026
14th August 2026
15th August 2026
16th August 2026
17th August 2026
18th August 2026
19th August 2026
20th August 2026
21st August 2026
22nd August 2026
23rd August 2026
24th August 2026
25th August 2026
26th August 2026
27th August 2026
28th August 2026
29th August 2026
30th August 2026
31st August 2026
1st September 2026
2nd September 2026
3rd September 2026
4th September 2026
5th September 2026
6th September 2026
7th September 2026
8th September 2026
9th September 2026
10th September 2026
11th September 2026
12th September 2026
13th September 2026
14th September 2026
15th September 2026
16th September 2026
17th September 2026
18th September 2026
19th September 2026
20th September 2026
21st September 2026
22nd September 2026
23rd September 2026
24th September 2026
25th September 2026
26th September 2026
27th September 2026
28th September 2026
29th September 2026
30th September 2026
1st October 2026
2nd October 2026
3rd October 2026
4th October 2026
5th October 2026
6th October 2026
7th October 2026
8th October 2026
9th October 2026
10th October 2026
11th October 2026
12th October 2026
13th October 2026
14th October 2026
15th October 2026
16th October 2026
17th October 2026
18th October 2026
19th October 2026
20th October 2026
21st October 2026
22nd October 2026
23rd October 2026
24th October 2026
25th October 2026
26th October 2026
27th October 2026
28th October 2026
29th October 2026
30th October 2026
31st October 2026
1st November 2026
2nd November 2026
3rd November 2026
4th November 2026
5th November 2026
6th November 2026
7th November 2026
8th November 2026
9th November 2026
10th November 2026
11th November 2026
12th November 2026
13th November 2026
14th November 2026
15th November 2026
16th November 2026
17th November 2026
18th November 2026
19th November 2026
20th November 2026
21st November 2026
22nd November 2026
23rd November 2026
24th November 2026
25th November 2026
26th November 2026
27th November 2026
28th November 2026
29th November 2026
30th November 2026
1st December 2026
2nd December 2026
3rd December 2026
4th December 2026
5th December 2026
6th December 2026
7th December 2026
8th December 2026
9th December 2026
10th December 2026
11th December 2026
12th December 2026
13th December 2026
14th December 2026
15th December 2026
16th December 2026
17th December 2026
18th December 2026
19th December 2026
20th December 2026
21st December 2026
22nd December 2026
23rd December 2026
24th December 2026
25th December 2026
26th December 2026
27th December 2026
28th December 2026
29th December 2026
30th December 2026
31st December 2026
33AQI (US)
43AQI (US)
36AQI (US)
29AQI (US)
35AQI (US)
25AQI (US)
36AQI (US)
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202634AQI (US)
27
4
27
1
30
1
28
26
4
30
22
3
190
13
Highest AQI (US) recorded in
February43AQI (US)
Lowest AQI (US) recorded in
June25AQI (US)
202530AQI (US)
31
26
2
28
3
30
31
24
6
24
7
23
8
30
28
3
28
2
30
1
333
32
Highest AQI (US) recorded in
July40AQI (US)
Lowest AQI (US) recorded in
May20AQI (US)
202430AQI (US)
29
2
24
5
31
30
31
28
1
29
2
26
5
29
1
30
1
30
27
4
344
21
Highest AQI (US) recorded in
February37AQI (US)
Lowest AQI (US) recorded in
November25AQI (US)
202337AQI (US)
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 (US) recorded in
June62AQI (US)
Lowest AQI (US) recorded in
October26AQI (US)
202231AQI (US)
28
2
20
1
29
2
30
29
2
28
2
24
2
28
27
4
28
2
30
1
303
16
Highest AQI (US) recorded in
January34AQI (US)
Lowest AQI (US) recorded in
August22AQI (US)
202131AQI (US)
24
5
25
3
30
1
30
30
1
30
26
5
29
2
29
1
31
30
28
3
342
21
Highest AQI (US) recorded in
February35AQI (US)
Lowest AQI (US) recorded in
November25AQI (US)
202028AQI (US)
13
21
16
2
30
31
31
30
31
26
4
31
260
6
Highest AQI (US) recorded in
May37AQI (US)
Lowest AQI (US) recorded in
October22AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Most Polluted Year Recorded
2023(Avg.)
37AQI (US)Least Polluted Year Recorded
2020(Avg.)
28AQI (US)Cornwall's annual 2026 AQI (US) (34) shows an average percentage change of 9.8% (worsened AQI (US)) compared to previous years: 2020 (28), 2021 (31), 2022 (31), 2023 (37), 2024 (30), 2025 (30).
