Ottawa, 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
Ottawa, Ontario, Canada
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
21st Nov 2025
73AQILowest AQI recorded on
3rd Nov 2021
14AQISame Day Analysis (27th November ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 21 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: 27th Nov - 28th Nov 2025
Ottawa, Ontario, Canada
AQI
Day
Night
.
7 AM27th Nov 2025
4 PM
6 AM28th Nov 2025
Day time
Avg. Highest Time
12PM27th Nov
24AQI
Avg. Lowest Time
4PM27th Nov
15AQI
Night time
Avg. Highest Time
11PM27th Nov
23AQI
Avg. Lowest Time
6AM28th Nov
11AQI
In the last 24 hours,
Ottawa's AQI reached its highest point of 24 at 12 PM during the Day, while the lowest point, 11, was recorded at 6 AM during the Night between 27th Nov and 28th Nov 2025.
Day & Night AQI Trend : Oct - Nov 2025
Ottawa, Ontario, Canada
OctNov
29th - 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 - 27th27th - 28th28th
Day
Night
29th Oct 2025267 AMAQI
29th Oct 2025238 AMAQI
29th Oct 2025269 AMAQI
29th Oct 20252810 AMAQI
29th Oct 20252911 AMAQI
29th Oct 20252812 PMAQI
29th Oct 2025261 PMAQI
29th Oct 2025252 PMAQI
29th Oct 2025253 PMAQI
29th Oct 2025254 PMAQI
29th Oct 2025265 PMAQI
29th Oct 2025266 PMAQI
29th Oct 2025287 PMAQI
29th Oct 2025328 PMAQI
29th Oct 2025389 PMAQI
29th Oct 20254210 PMAQI
29th Oct 20253911 PMAQI
30th Oct 20254212 AMAQI
30th Oct 2025421 AMAQI
30th Oct 2025402 AMAQI
30th Oct 2025413 AMAQI
30th Oct 2025394 AMAQI
30th Oct 2025385 AMAQI
30th Oct 2025386 AMAQI
6°C0/13°C
30th Oct 2025387 AMAQI
30th Oct 2025388 AMAQI
30th Oct 2025419 AMAQI
30th Oct 20254210 AMAQI
30th Oct 20254211 AMAQI
30th Oct 20253912 PMAQI
30th Oct 2025401 PMAQI
30th Oct 2025412 PMAQI
30th Oct 2025443 PMAQI
30th Oct 2025414 PMAQI
30th Oct 2025325 PMAQI
30th Oct 2025286 PMAQI
30th Oct 2025287 PMAQI
30th Oct 2025268 PMAQI
30th Oct 2025279 PMAQI
30th Oct 20252610 PMAQI
30th Oct 20252511 PMAQI
31st Oct 20252412 AMAQI
31st Oct 2025211 AMAQI
31st Oct 2025192 AMAQI
31st Oct 2025163 AMAQI
31st Oct 2025144 AMAQI
31st Oct 2025135 AMAQI
31st Oct 2025116 AMAQI
5°C4/6°C
31st Oct 2025117 AMAQI
31st Oct 2025118 AMAQI
31st Oct 2025119 AMAQI
31st Oct 20251210 AMAQI
31st Oct 20251311 AMAQI
31st Oct 20251212 PMAQI
31st Oct 2025111 PMAQI
31st Oct 2025112 PMAQI
31st Oct 2025113 PMAQI
31st Oct 2025114 PMAQI
31st Oct 2025115 PMAQI
31st Oct 2025146 PMAQI
31st Oct 2025127 PMAQI
31st Oct 2025268 PMAQI
31st Oct 2025199 PMAQI
31st Oct 20251310 PMAQI
31st Oct 20251411 PMAQI
1st Nov 20252212 AMAQI
1st Nov 2025131 AMAQI
1st Nov 2025172 AMAQI
1st Nov 2025203 AMAQI
1st Nov 2025194 AMAQI
1st Nov 2025185 AMAQI
1st Nov 2025156 AMAQI
5°C1/6°C
1st Nov 2025147 AMAQI
1st Nov 2025148 AMAQI
1st Nov 2025169 AMAQI
1st Nov 20251810 AMAQI
1st Nov 20251711 AMAQI
1st Nov 20251712 PMAQI
1st Nov 2025171 PMAQI
1st Nov 2025172 PMAQI
1st Nov 2025173 PMAQI
1st Nov 2025184 PMAQI
1st Nov 2025175 PMAQI
1st Nov 2025176 PMAQI
1st Nov 2025177 PMAQI
1st Nov 2025188 PMAQI
1st Nov 2025219 PMAQI
1st Nov 20252410 PMAQI
1st Nov 20252511 PMAQI
2nd Nov 20252512 AMAQI
2nd Nov 2025231 AMAQI
2nd Nov 2025222 AMAQI
2nd Nov 2025233 AMAQI
2nd Nov 2025214 AMAQI
2nd Nov 2025205 AMAQI
2nd Nov 2025206 AMAQI
4°C2/5°C
2nd Nov 2025207 AMAQI
2nd Nov 2025178 AMAQI
2nd Nov 2025169 AMAQI
2nd Nov 20252110 AMAQI
2nd Nov 20252211 AMAQI
2nd Nov 20252212 PMAQI
2nd Nov 2025191 PMAQI
2nd Nov 2025182 PMAQI
2nd Nov 2025173 PMAQI
2nd Nov 2025164 PMAQI
2nd Nov 2025185 PMAQI
2nd Nov 2025226 PMAQI
2nd Nov 2025257 PMAQI
2nd Nov 2025288 PMAQI
2nd Nov 2025299 PMAQI
2nd Nov 20253010 PMAQI
2nd Nov 20252811 PMAQI
3rd Nov 20252612 AMAQI
3rd Nov 2025261 AMAQI
3rd Nov 2025282 AMAQI
3rd Nov 2025313 AMAQI
3rd Nov 2025274 AMAQI
3rd Nov 2025285 AMAQI
3rd Nov 2025346 AMAQI
4°C0/10°C
3rd Nov 2025357 AMAQI
3rd Nov 2025348 AMAQI
3rd Nov 2025349 AMAQI
3rd Nov 20253410 AMAQI
3rd Nov 20253711 AMAQI
3rd Nov 20253612 PMAQI
3rd Nov 2025341 PMAQI
3rd Nov 2025322 PMAQI
3rd Nov 2025303 PMAQI
3rd Nov 2025224 PMAQI
3rd Nov 2025225 PMAQI
3rd Nov 2025256 PMAQI
3rd Nov 2025267 PMAQI
3rd Nov 2025268 PMAQI
3rd Nov 2025229 PMAQI
3rd Nov 20252010 PMAQI
3rd Nov 20251911 PMAQI
4th Nov 20251712 AMAQI
4th Nov 2025181 AMAQI
4th Nov 2025172 AMAQI
4th Nov 2025143 AMAQI
4th Nov 2025124 AMAQI
4th Nov 2025165 AMAQI
4th Nov 2025176 AMAQI
5°C1/12°C
4th Nov 2025147 AMAQI
4th Nov 2025168 AMAQI
4th Nov 2025189 AMAQI
4th Nov 20251710 AMAQI
4th Nov 20251811 AMAQI
4th Nov 20252012 PMAQI
4th Nov 2025191 PMAQI
4th Nov 2025182 PMAQI
4th Nov 2025173 PMAQI
4th Nov 2025214 PMAQI
4th Nov 2025205 PMAQI
4th Nov 2025206 PMAQI
4th Nov 2025197 PMAQI
4th Nov 2025208 PMAQI
4th Nov 2025239 PMAQI
4th Nov 20252510 PMAQI
4th Nov 20252511 PMAQI
5th Nov 20252812 AMAQI
5th Nov 2025271 AMAQI
5th Nov 2025222 AMAQI
5th Nov 2025133 AMAQI
5th Nov 2025174 AMAQI
5th Nov 2025155 AMAQI
5th Nov 2025166 AMAQI
6°C3/13°C
5th Nov 2025167 AMAQI
5th Nov 2025178 AMAQI
5th Nov 2025199 AMAQI
5th Nov 20252710 AMAQI
5th Nov 20253311 AMAQI
5th Nov 20253512 PMAQI
5th Nov 2025341 PMAQI
5th Nov 2025332 PMAQI
5th Nov 2025303 PMAQI
5th Nov 2025304 PMAQI
5th Nov 2025305 PMAQI
5th Nov 2025276 PMAQI
5th Nov 2025257 PMAQI
5th Nov 2025228 PMAQI
5th Nov 2025229 PMAQI
5th Nov 20252210 PMAQI
5th Nov 20251811 PMAQI
6th Nov 20251712 AMAQI
6th Nov 2025171 AMAQI
6th Nov 2025172 AMAQI
6th Nov 2025133 AMAQI
6th Nov 2025114 AMAQI
6th Nov 2025115 AMAQI
6th Nov 2025166 AMAQI
4°C2/8°C
6th Nov 2025177 AMAQI
6th Nov 2025178 AMAQI
6th Nov 2025179 AMAQI
6th Nov 20251710 AMAQI
6th Nov 20252611 AMAQI
6th Nov 20251912 PMAQI
6th Nov 2025171 PMAQI
6th Nov 2025172 PMAQI
6th Nov 2025173 PMAQI
6th Nov 2025184 PMAQI
6th Nov 2025175 PMAQI
6th Nov 2025206 PMAQI
6th Nov 2025237 PMAQI
6th Nov 2025308 PMAQI
6th Nov 2025379 PMAQI
6th Nov 20254810 PMAQI
6th Nov 20255811 PMAQI
7th Nov 20256412 AMAQI
7th Nov 2025541 AMAQI
7th Nov 2025532 AMAQI
7th Nov 2025553 AMAQI
7th Nov 2025434 AMAQI
7th Nov 2025335 AMAQI
7th Nov 2025306 AMAQI
2°C0/3°C
7th Nov 2025327 AMAQI
7th Nov 2025348 AMAQI
7th Nov 2025339 AMAQI
7th Nov 20253310 AMAQI
7th Nov 20253411 AMAQI
7th Nov 20253312 PMAQI
7th Nov 2025331 PMAQI
7th Nov 2025332 PMAQI
7th Nov 2025333 PMAQI
7th Nov 2025334 PMAQI
7th Nov 2025335 PMAQI
7th Nov 2025346 PMAQI
7th Nov 2025357 PMAQI
7th Nov 2025358 PMAQI
7th Nov 2025399 PMAQI
7th Nov 20254510 PMAQI
7th Nov 20254811 PMAQI
8th Nov 20255212 AMAQI
8th Nov 2025531 AMAQI
8th Nov 2025552 AMAQI
8th Nov 2025563 AMAQI
8th Nov 2025474 AMAQI
8th Nov 2025335 AMAQI
8th Nov 2025236 AMAQI
2°C-3/7°C
8th Nov 2025137 AMAQI
8th Nov 2025118 AMAQI
8th Nov 2025119 AMAQI
8th Nov 20252810 AMAQI
8th Nov 20252111 AMAQI
8th Nov 20252612 PMAQI
8th Nov 2025201 PMAQI
8th Nov 2025172 PMAQI
8th Nov 2025173 PMAQI
8th Nov 2025174 PMAQI
8th Nov 2025185 PMAQI
8th Nov 2025216 PMAQI
8th Nov 2025227 PMAQI
8th Nov 2025318 PMAQI
8th Nov 2025389 PMAQI
8th Nov 20253910 PMAQI
8th Nov 20253411 PMAQI
9th Nov 20253312 AMAQI
9th Nov 2025311 AMAQI
9th Nov 2025312 AMAQI
9th Nov 2025263 AMAQI
9th Nov 2025234 AMAQI
9th Nov 2025225 AMAQI
9th Nov 2025196 AMAQI
2°C0/2°C
9th Nov 2025187 AMAQI
9th Nov 2025178 AMAQI
9th Nov 2025179 AMAQI
9th Nov 20251710 AMAQI
9th Nov 20251711 AMAQI
9th Nov 20251612 PMAQI
9th Nov 2025181 PMAQI
9th Nov 2025162 PMAQI
9th Nov 2025153 PMAQI
9th Nov 2025174 PMAQI
9th Nov 2025185 PMAQI
9th Nov 2025196 PMAQI
9th Nov 2025217 PMAQI
9th Nov 2025208 PMAQI
9th Nov 2025219 PMAQI
9th Nov 20251710 PMAQI
9th Nov 20251611 PMAQI
10th Nov 20251712 AMAQI
10th Nov 2025171 AMAQI
10th Nov 2025172 AMAQI
10th Nov 2025173 AMAQI
10th Nov 2025144 AMAQI
10th Nov 2025225 AMAQI
10th Nov 2025166 AMAQI
-2°C-3/0°C
10th Nov 2025127 AMAQI
10th Nov 2025168 AMAQI
10th Nov 2025179 AMAQI
10th Nov 20251810 AMAQI
10th Nov 20251911 AMAQI
10th Nov 20251812 PMAQI
10th Nov 2025161 PMAQI
10th Nov 2025152 PMAQI
10th Nov 2025153 PMAQI
10th Nov 2025154 PMAQI
10th Nov 2025165 PMAQI
10th Nov 2025166 PMAQI
10th Nov 2025167 PMAQI
10th Nov 2025168 PMAQI
10th Nov 2025189 PMAQI
10th Nov 20251810 PMAQI
10th Nov 20252111 PMAQI
11th Nov 20251912 AMAQI
11th Nov 2025171 AMAQI
11th Nov 2025172 AMAQI
11th Nov 2025143 AMAQI
11th Nov 2025124 AMAQI
11th Nov 2025115 AMAQI
11th Nov 2025116 AMAQI
-2°C-4/-1°C
11th Nov 2025117 AMAQI
11th Nov 2025118 AMAQI
11th Nov 2025119 AMAQI
11th Nov 20251310 AMAQI
11th Nov 20251611 AMAQI
11th Nov 20251912 PMAQI
11th Nov 2025201 PMAQI
11th Nov 2025182 PMAQI
11th Nov 2025173 PMAQI
11th Nov 2025174 PMAQI
11th Nov 2025205 PMAQI
11th Nov 2025186 PMAQI
11th Nov 2025177 PMAQI
11th Nov 2025158 PMAQI
11th Nov 2025169 PMAQI
11th Nov 20251610 PMAQI
11th Nov 20251611 PMAQI
12th Nov 20252812 AMAQI
12th Nov 2025271 AMAQI
12th Nov 2025252 AMAQI
12th Nov 2025193 AMAQI
12th Nov 2025164 AMAQI
12th Nov 2025165 AMAQI
12th Nov 2025196 AMAQI
-3°C-6/0°C
12th Nov 2025307 AMAQI
12th Nov 2025308 AMAQI
12th Nov 2025349 AMAQI
12th Nov 20254410 AMAQI
12th Nov 20254911 AMAQI
12th Nov 20255512 PMAQI
12th Nov 2025571 PMAQI
12th Nov 2025542 PMAQI
12th Nov 2025473 PMAQI
12th Nov 2025484 PMAQI
12th Nov 2025525 PMAQI
12th Nov 2025536 PMAQI
12th Nov 2025557 PMAQI
12th Nov 2025568 PMAQI
12th Nov 2025579 PMAQI
12th Nov 20255910 PMAQI
12th Nov 20255811 PMAQI
13th Nov 20255512 AMAQI
13th Nov 2025491 AMAQI
13th Nov 2025432 AMAQI
13th Nov 2025293 AMAQI
13th Nov 2025254 AMAQI
13th Nov 2025265 AMAQI
13th Nov 2025266 AMAQI
0°C-3/2°C
13th Nov 2025237 AMAQI
13th Nov 2025228 AMAQI
13th Nov 2025229 AMAQI
13th Nov 20252410 AMAQI
13th Nov 20252611 AMAQI
13th Nov 20252912 PMAQI
13th Nov 2025241 PMAQI
13th Nov 2025222 PMAQI
13th Nov 2025203 PMAQI
13th Nov 2025204 PMAQI
13th Nov 2025205 PMAQI
13th Nov 2025226 PMAQI
13th Nov 2025197 PMAQI
13th Nov 2025188 PMAQI
13th Nov 2025229 PMAQI
13th Nov 20252210 PMAQI
13th Nov 20251711 PMAQI
14th Nov 20251712 AMAQI
14th Nov 2025191 AMAQI
14th Nov 2025182 AMAQI
14th Nov 2025213 AMAQI
14th Nov 2025194 AMAQI
14th Nov 2025175 AMAQI
14th Nov 2025176 AMAQI
1°C-1/4°C
14th Nov 2025247 AMAQI
14th Nov 2025198 AMAQI
14th Nov 2025239 AMAQI
14th Nov 20252510 AMAQI
14th Nov 20253911 AMAQI
14th Nov 20252712 PMAQI
14th Nov 2025491 PMAQI
14th Nov 2025372 PMAQI
14th Nov 2025243 PMAQI
14th Nov 2025244 PMAQI
14th Nov 2025275 PMAQI
14th Nov 2025236 PMAQI
14th Nov 2025287 PMAQI
14th Nov 2025278 PMAQI
14th Nov 2025249 PMAQI
14th Nov 20252410 PMAQI
14th Nov 20252411 PMAQI
15th Nov 20252612 AMAQI
15th Nov 2025251 AMAQI
15th Nov 2025232 AMAQI
15th Nov 2025203 AMAQI
15th Nov 2025214 AMAQI
15th Nov 2025175 AMAQI
15th Nov 2025236 AMAQI
2°C0/7°C
15th Nov 2025247 AMAQI
15th Nov 2025448 AMAQI
15th Nov 2025449 AMAQI
15th Nov 20253310 AMAQI
15th Nov 20252211 AMAQI
15th Nov 20252012 PMAQI
15th Nov 2025221 PMAQI
15th Nov 2025192 PMAQI
15th Nov 2025183 PMAQI
15th Nov 2025174 PMAQI
15th Nov 2025215 PMAQI
15th Nov 2025266 PMAQI
15th Nov 2025277 PMAQI
15th Nov 2025288 PMAQI
15th Nov 2025289 PMAQI
15th Nov 20252810 PMAQI
15th Nov 20252811 PMAQI
16th Nov 20252812 AMAQI
16th Nov 2025291 AMAQI
16th Nov 2025332 AMAQI
16th Nov 2025343 AMAQI
16th Nov 2025344 AMAQI
16th Nov 2025305 AMAQI
16th Nov 2025236 AMAQI
0°C-2/2°C
16th Nov 2025217 AMAQI
16th Nov 2025258 AMAQI
16th Nov 2025209 AMAQI
16th Nov 20251710 AMAQI
16th Nov 20251611 AMAQI
16th Nov 20251612 PMAQI
16th Nov 2025171 PMAQI
16th Nov 2025162 PMAQI
16th Nov 2025133 PMAQI
16th Nov 2025164 PMAQI
16th Nov 2025175 PMAQI
16th Nov 2025146 PMAQI
16th Nov 2025137 PMAQI
16th Nov 2025158 PMAQI
16th Nov 2025139 PMAQI
16th Nov 20251410 PMAQI
16th Nov 20251711 PMAQI
17th Nov 20251712 AMAQI
17th Nov 2025161 AMAQI
17th Nov 2025152 AMAQI
17th Nov 2025153 AMAQI
17th Nov 2025154 AMAQI
17th Nov 2025165 AMAQI
17th Nov 2025146 AMAQI
0°C-3/1°C
17th Nov 2025117 AMAQI
17th Nov 2025118 AMAQI
17th Nov 2025119 AMAQI
17th Nov 20251310 AMAQI
17th Nov 20251311 AMAQI
17th Nov 20251512 PMAQI
17th Nov 2025121 PMAQI
17th Nov 2025162 PMAQI
17th Nov 2025173 PMAQI
17th Nov 2025174 PMAQI
17th Nov 2025175 PMAQI
17th Nov 2025176 PMAQI
17th Nov 2025177 PMAQI
17th Nov 2025178 PMAQI
17th Nov 2025179 PMAQI
17th Nov 20251710 PMAQI
17th Nov 20251711 PMAQI
18th Nov 20251712 AMAQI
18th Nov 2025171 AMAQI
18th Nov 2025122 AMAQI
18th Nov 2025113 AMAQI
18th Nov 2025114 AMAQI
18th Nov 2025115 AMAQI
18th Nov 2025116 AMAQI
-2°C-4/0°C
18th Nov 2025117 AMAQI
18th Nov 2025118 AMAQI
18th Nov 2025119 AMAQI
18th Nov 20251510 AMAQI
18th Nov 20251611 AMAQI
18th Nov 20251612 PMAQI
18th Nov 2025181 PMAQI
18th Nov 2025192 PMAQI
18th Nov 2025193 PMAQI
18th Nov 2025184 PMAQI
18th Nov 2025185 PMAQI
18th Nov 2025216 PMAQI
18th Nov 2025237 PMAQI
18th Nov 2025258 PMAQI
18th Nov 2025409 PMAQI
18th Nov 20254510 PMAQI
18th Nov 20254211 PMAQI
19th Nov 20254312 AMAQI
19th Nov 2025441 AMAQI
19th Nov 2025442 AMAQI
19th Nov 2025333 AMAQI
19th Nov 2025274 AMAQI
19th Nov 2025225 AMAQI
19th Nov 2025186 AMAQI
-1°C-2/0°C
19th Nov 2025177 AMAQI
19th Nov 2025178 AMAQI
19th Nov 2025199 AMAQI
19th Nov 20251910 AMAQI
19th Nov 20252111 AMAQI
19th Nov 20252212 PMAQI
19th Nov 2025191 PMAQI
19th Nov 2025192 PMAQI
19th Nov 2025203 PMAQI
19th Nov 2025224 PMAQI
19th Nov 2025245 PMAQI
19th Nov 2025276 PMAQI
19th Nov 2025317 PMAQI
19th Nov 2025388 PMAQI
19th Nov 2025419 PMAQI
19th Nov 20254010 PMAQI
19th Nov 20254011 PMAQI
20th Nov 20254312 AMAQI
20th Nov 2025421 AMAQI
20th Nov 2025372 AMAQI
20th Nov 2025343 AMAQI
20th Nov 2025314 AMAQI
20th Nov 2025285 AMAQI
20th Nov 2025266 AMAQI
-4°C-7/-1°C
20th Nov 2025277 AMAQI
20th Nov 2025328 AMAQI
20th Nov 2025349 AMAQI
20th Nov 20253410 AMAQI
20th Nov 20254311 AMAQI
20th Nov 20254912 PMAQI
20th Nov 2025501 PMAQI
20th Nov 2025502 PMAQI
20th Nov 2025543 PMAQI
20th Nov 2025554 PMAQI
20th Nov 2025515 PMAQI
20th Nov 2025526 PMAQI
20th Nov 2025547 PMAQI
20th Nov 2025578 PMAQI
20th Nov 2025579 PMAQI
20th Nov 20256610 PMAQI
20th Nov 20256511 PMAQI
21st Nov 20256912 AMAQI
21st Nov 2025681 AMAQI
21st Nov 2025702 AMAQI
21st Nov 2025723 AMAQI
21st Nov 2025794 AMAQI
21st Nov 2025815 AMAQI
21st Nov 2025826 AMAQI
-3°C-3/-2°C
21st Nov 2025787 AMAQI
21st Nov 2025728 AMAQI
21st Nov 2025729 AMAQI
21st Nov 20257310 AMAQI
21st Nov 20257311 AMAQI
21st Nov 20257112 PMAQI
21st Nov 2025701 PMAQI
21st Nov 2025762 PMAQI
21st Nov 2025853 PMAQI
21st Nov 2025864 PMAQI
21st Nov 2025875 PMAQI
21st Nov 2025906 PMAQI
21st Nov 2025887 PMAQI
21st Nov 2025658 PMAQI
21st Nov 2025529 PMAQI
21st Nov 20255010 PMAQI
21st Nov 20254911 PMAQI
22nd Nov 20253812 AMAQI
22nd Nov 2025381 AMAQI
22nd Nov 2025382 AMAQI
22nd Nov 2025373 AMAQI
22nd Nov 2025364 AMAQI
22nd Nov 2025335 AMAQI
22nd Nov 2025316 AMAQI
0°C-4/5°C
22nd Nov 2025237 AMAQI
22nd Nov 2025218 AMAQI
22nd Nov 2025219 AMAQI
22nd Nov 20252310 AMAQI
22nd Nov 20252311 AMAQI
22nd Nov 20252112 PMAQI
22nd Nov 2025221 PMAQI
22nd Nov 2025202 PMAQI
22nd Nov 2025203 PMAQI
22nd Nov 2025224 PMAQI
22nd Nov 2025225 PMAQI
22nd Nov 2025266 PMAQI
22nd Nov 2025377 PMAQI
22nd Nov 2025358 PMAQI
22nd Nov 2025439 PMAQI
22nd Nov 20254310 PMAQI
22nd Nov 20254511 PMAQI
23rd Nov 20254612 AMAQI
23rd Nov 2025451 AMAQI
23rd Nov 2025452 AMAQI
23rd Nov 2025553 AMAQI
23rd Nov 2025524 AMAQI
23rd Nov 2025555 AMAQI
23rd Nov 2025526 AMAQI
0°C-3/5°C
23rd Nov 2025487 AMAQI
23rd Nov 2025478 AMAQI
23rd Nov 2025489 AMAQI
23rd Nov 20254810 AMAQI
23rd Nov 20254611 AMAQI
23rd Nov 20254912 PMAQI
23rd Nov 2025541 PMAQI
23rd Nov 2025552 PMAQI
23rd Nov 2025553 PMAQI
23rd Nov 2025504 PMAQI
23rd Nov 2025535 PMAQI
23rd Nov 2025566 PMAQI
23rd Nov 2025577 PMAQI
23rd Nov 2025588 PMAQI
23rd Nov 2025629 PMAQI
23rd Nov 20256310 PMAQI
23rd Nov 20256411 PMAQI
24th Nov 20256412 AMAQI
24th Nov 2025661 AMAQI
24th Nov 2025632 AMAQI
24th Nov 2025593 AMAQI
24th Nov 2025554 AMAQI
24th Nov 2025515 AMAQI
24th Nov 2025396 AMAQI
-1°C-4/1°C
24th Nov 2025307 AMAQI
24th Nov 2025268 AMAQI
24th Nov 2025259 AMAQI
24th Nov 20252310 AMAQI
24th Nov 20252511 AMAQI
24th Nov 20252312 PMAQI
24th Nov 2025191 PMAQI
24th Nov 2025172 PMAQI
24th Nov 2025163 PMAQI
24th Nov 2025204 PMAQI
24th Nov 2025255 PMAQI
24th Nov 2025246 PMAQI
24th Nov 2025307 PMAQI
24th Nov 2025348 PMAQI
24th Nov 2025369 PMAQI
24th Nov 20253510 PMAQI
24th Nov 20252811 PMAQI
25th Nov 20252412 AMAQI
25th Nov 2025241 AMAQI
25th Nov 2025252 AMAQI
25th Nov 2025363 AMAQI
25th Nov 2025314 AMAQI
25th Nov 2025255 AMAQI
25th Nov 2025286 AMAQI
2°C-1/3°C
25th Nov 2025347 AMAQI
25th Nov 2025348 AMAQI
25th Nov 2025419 AMAQI
25th Nov 20254210 AMAQI
25th Nov 20254211 AMAQI
25th Nov 20254412 PMAQI
25th Nov 2025451 PMAQI
25th Nov 2025442 PMAQI
25th Nov 2025443 PMAQI
25th Nov 2025484 PMAQI
25th Nov 2025465 PMAQI
25th Nov 2025476 PMAQI
25th Nov 2025497 PMAQI
25th Nov 2025478 PMAQI
25th Nov 2025449 PMAQI
25th Nov 20254610 PMAQI
25th Nov 20254711 PMAQI
26th Nov 20255112 AMAQI
26th Nov 2025551 AMAQI
26th Nov 2025552 AMAQI
26th Nov 2025543 AMAQI
26th Nov 2025564 AMAQI
26th Nov 2025585 AMAQI
26th Nov 2025586 AMAQI
3°C0/11°C
26th Nov 2025567 AMAQI
26th Nov 2025558 AMAQI
26th Nov 2025549 AMAQI
26th Nov 20255310 AMAQI
26th Nov 20254911 AMAQI
26th Nov 20254512 PMAQI
26th Nov 2025451 PMAQI
26th Nov 2025452 PMAQI
26th Nov 2025473 PMAQI
26th Nov 2025514 PMAQI
26th Nov 2025525 PMAQI
26th Nov 2025556 PMAQI
26th Nov 2025567 PMAQI
26th Nov 2025578 PMAQI
26th Nov 2025489 PMAQI
26th Nov 20254110 PMAQI
26th Nov 20253511 PMAQI
27th Nov 20252812 AMAQI
27th Nov 2025261 AMAQI
27th Nov 2025252 AMAQI
27th Nov 2025243 AMAQI
27th Nov 2025204 AMAQI
27th Nov 2025215 AMAQI
27th Nov 2025236 AMAQI
3°C2/5°C
27th Nov 2025227 AMAQI
27th Nov 2025218 AMAQI
27th Nov 2025219 AMAQI
27th Nov 20251710 AMAQI
27th Nov 20252011 AMAQI
27th Nov 20252412 PMAQI
27th Nov 2025191 PMAQI
27th Nov 2025172 PMAQI
27th Nov 2025163 PMAQI
27th Nov 2025154 PMAQI
27th Nov 2025165 PMAQI
27th Nov 2025186 PMAQI
27th Nov 2025187 PMAQI
27th Nov 2025188 PMAQI
27th Nov 2025229 PMAQI
27th Nov 20252110 PMAQI
27th Nov 20252311 PMAQI
28th Nov 20252112 AMAQI
28th Nov 2025171 AMAQI
28th Nov 2025172 AMAQI
28th Nov 2025123 AMAQI
28th Nov 2025114 AMAQI
28th Nov 2025115 AMAQI
28th Nov 2025116 AMAQI
1°C0/3°C
28th Nov 2025117 AMAQI
7 AM28th Nov 2025118 AMAQI
28th Nov 2025119 AMAQI
28th Nov 20251110 AMAQI
28th Nov 20251311 AMAQI
11 AM28th Nov 20251712 PMAQI
28th Nov 2025161 PMAQI
28th Nov 2025152 PMAQI
4 PM
11 PM
6 AM
--°C/°C
Day time
Avg. Highest Time
11 AM - 1 PM
28AQI
3 hours / Day
90 hours / Month
Avg. Lowest Time
7 AM - 8 AM
25AQI
2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 11 AM to 1 PM (Avg. 28), while the lowest AQI was between 7 AM to 8 AM (Avg. 25).
Night time
Avg. Highest Time
12 AM - 1 AM
34AQI
2 hours / Day
60 hours / Month
Avg. Lowest Time
6 AM
26AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 1 AM (Avg. 34), while the lowest AQI was between 6 AM to 6 AM (Avg. 26).
2025 Days Vs Air Quality
Ottawa, Ontario, Canada
2025
91%
300
9%
31
Total number of days with different AQI categories in last 332 days in 2025 (33 days remaining)
Good
300 DaysModerate
31 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 332 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
Ottawa, 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
21AQI
21AQI
2nd January 2025
21AQI
21AQI
3rd January 2025
21AQI
21AQI
4th January 2025
23AQI
23AQI
5th January 2025
22AQI
22AQI
6th January 2025
23AQI
23AQI
7th January 2025
21AQI
21AQI
8th January 2025
21AQI
21AQI
9th January 2025
24AQI
24AQI
10th January 2025
28AQI
28AQI
11th January 2025
37AQI
37AQI
12th January 2025
30AQI
30AQI
13th January 2025
51AQI
51AQI
14th January 2025
22AQI
22AQI
15th January 2025
22AQI
22AQI
16th January 2025
35AQI
35AQI
17th January 2025
50AQI
50AQI
18th January 2025
29AQI
29AQI
19th January 2025
21AQI
21AQI
20th January 2025
24AQI
24AQI
21st January 2025
38AQI
38AQI
22nd January 2025
42AQI
42AQI
23rd January 2025
37AQI
37AQI
24th January 2025
34AQI
34AQI
25th January 2025
54AQI
54AQI
26th January 2025
35AQI
35AQI
27th January 2025
26AQI
26AQI
28th January 2025
26AQI
26AQI
29th January 2025
23AQI
23AQI
30th January 2025
23AQI
23AQI
31st January 2025
35AQI
35AQI
1st February 2025
24AQI
24AQI
2nd February 2025
41AQI
41AQI
3rd February 2025
53AQI
53AQI
4th February 2025
22AQI
22AQI
5th February 2025
23AQI
23AQI
6th February 2025
34AQI
34AQI
7th February 2025
28AQI
28AQI
8th February 2025
23AQI
23AQI
9th February 2025
24AQI
24AQI
10th February 2025
22AQI
22AQI
11th February 2025
28AQI
28AQI
12th February 2025
28AQI
28AQI
13th February 2025
22AQI
22AQI
14th February 2025
21AQI
21AQI
15th February 2025
23AQI
23AQI
16th February 2025
21AQI
21AQI
17th February 2025
21AQI
21AQI
18th February 2025
20AQI
20AQI
19th February 2025
19AQI
19AQI
20th February 2025
22AQI
22AQI
21st February 2025
28AQI
28AQI
22nd February 2025
34AQI
34AQI
23rd February 2025
47AQI
47AQI
24th February 2025
47AQI
47AQI
25th February 2025
56AQI
56AQI
26th February 2025
30AQI
30AQI
27th February 2025
32AQI
32AQI
28th February 2025
28AQI
28AQI
1st March 2025
26AQI
26AQI
2nd March 2025
24AQI
24AQI
3rd March 2025
44AQI
44AQI
4th March 2025
38AQI
38AQI
5th March 2025
48AQI
48AQI
6th March 2025
26AQI
26AQI
7th March 2025
28AQI
28AQI
8th March 2025
30AQI
30AQI
9th March 2025
28AQI
28AQI
10th March 2025
25AQI
25AQI
11th March 2025
35AQI
35AQI
12th March 2025
26AQI
26AQI
13th March 2025
34AQI
34AQI
14th March 2025
60AQI
60AQI
15th March 2025
57AQI
57AQI
16th March 2025
43AQI
43AQI
17th March 2025
16AQI
16AQI
18th March 2025
23AQI
23AQI
19th March 2025
27AQI
27AQI
20th March 2025
30AQI
30AQI
21st March 2025
17AQI
17AQI
22nd March 2025
20AQI
20AQI
23rd March 2025
17AQI
17AQI
24th March 2025
23AQI
23AQI
25th March 2025
20AQI
20AQI
26th March 2025
20AQI
20AQI
27th March 2025
18AQI
18AQI
28th March 2025
18AQI
18AQI
29th March 2025
17AQI
17AQI
30th March 2025
20AQI
20AQI
31st March 2025
24AQI
24AQI
1st April 2025
16AQI
16AQI
2nd April 2025
19AQI
19AQI
3rd April 2025
22AQI
22AQI
4th April 2025
18AQI
18AQI
5th April 2025
20AQI
20AQI
6th April 2025
18AQI
18AQI
7th April 2025
20AQI
20AQI
8th April 2025
18AQI
18AQI
9th April 2025
16AQI
16AQI
10th April 2025
25AQI
25AQI
11th April 2025
31AQI
31AQI
12th April 2025
26AQI
26AQI
13th April 2025
27AQI
27AQI
14th April 2025
27AQI
27AQI
15th April 2025
22AQI
22AQI
16th April 2025
15AQI
15AQI
17th April 2025
16AQI
16AQI
18th April 2025
29AQI
29AQI
19th April 2025
38AQI
38AQI
20th April 2025
15AQI
15AQI
21st April 2025
19AQI
19AQI
22nd April 2025
16AQI
16AQI
23rd April 2025
13AQI
13AQI
24th April 2025
19AQI
19AQI
25th April 2025
20AQI
20AQI
26th April 2025
16AQI
16AQI
27th April 2025
12AQI
12AQI
28th April 2025
17AQI
17AQI
29th April 2025
25AQI
25AQI
30th April 2025
14AQI
14AQI
1st May 2025
21AQI
21AQI
2nd May 2025
21AQI
21AQI
3rd May 2025
13AQI
13AQI
4th May 2025
17AQI
17AQI
5th May 2025
16AQI
16AQI
6th May 2025
17AQI
17AQI
7th May 2025
18AQI
18AQI
8th May 2025
14AQI
14AQI
9th May 2025
16AQI
16AQI
10th May 2025
18AQI
18AQI
11th May 2025
15AQI
15AQI
12th May 2025
19AQI
19AQI
13th May 2025
27AQI
27AQI
14th May 2025
29AQI
29AQI
15th May 2025
26AQI
26AQI
16th May 2025
31AQI
31AQI
17th May 2025
32AQI
32AQI
18th May 2025
15AQI
15AQI
19th May 2025
12AQI
12AQI
20th May 2025
12AQI
12AQI
21st May 2025
19AQI
19AQI
22nd May 2025
14AQI
14AQI
23rd May 2025
15AQI
15AQI
24th May 2025
12AQI
12AQI
25th May 2025
15AQI
15AQI
26th May 2025
21AQI
21AQI
27th May 2025
22AQI
22AQI
28th May 2025
26AQI
26AQI
29th May 2025
21AQI
21AQI
30th May 2025
22AQI
22AQI
31st May 2025
23AQI
23AQI
1st June 2025
12AQI
12AQI
2nd June 2025
16AQI
16AQI
3rd June 2025
26AQI
26AQI
4th June 2025
44AQI
44AQI
5th June 2025
46AQI
46AQI
6th June 2025
53AQI
53AQI
7th June 2025
60AQI
60AQI
8th June 2025
57AQI
57AQI
9th June 2025
57AQI
57AQI
10th June 2025
39AQI
39AQI
11th June 2025
51AQI
51AQI
12th June 2025
53AQI
53AQI
13th June 2025
25AQI
25AQI
14th June 2025
24AQI
24AQI
15th June 2025
27AQI
27AQI
16th June 2025
35AQI
35AQI
17th June 2025
29AQI
29AQI
18th June 2025
29AQI
29AQI
19th June 2025
32AQI
32AQI
20th June 2025
19AQI
19AQI
21st June 2025
25AQI
25AQI
22nd June 2025
26AQI
26AQI
23rd June 2025
40AQI
40AQI
24th June 2025
50AQI
50AQI
25th June 2025
39AQI
39AQI
26th June 2025
25AQI
25AQI
27th June 2025
24AQI
24AQI
28th June 2025
27AQI
27AQI
29th June 2025
21AQI
21AQI
30th June 2025
28AQI
28AQI
1st July 2025
34AQI
34AQI
2nd July 2025
32AQI
32AQI
3rd July 2025
42AQI
42AQI
4th July 2025
25AQI
25AQI
5th July 2025
27AQI
27AQI
6th July 2025
46AQI
46AQI
7th July 2025
44AQI
44AQI
8th July 2025
26AQI
26AQI
9th July 2025
26AQI
26AQI
10th July 2025
32AQI
32AQI
11th July 2025
37AQI
37AQI
12th July 2025
47AQI
47AQI
13th July 2025
42AQI
42AQI
14th July 2025
45AQI
45AQI
15th July 2025
46AQI
46AQI
16th July 2025
54AQI
54AQI
17th July 2025
53AQI
53AQI
18th July 2025
24AQI
24AQI
19th July 2025
30AQI
30AQI
20th July 2025
30AQI
30AQI
21st July 2025
28AQI
28AQI
22nd July 2025
19AQI
19AQI
23rd July 2025
23AQI
23AQI
24th July 2025
27AQI
27AQI
25th July 2025
31AQI
31AQI
26th July 2025
50AQI
50AQI
27th July 2025
58AQI
58AQI
28th July 2025
60AQI
60AQI
29th July 2025
48AQI
48AQI
30th July 2025
62AQI
62AQI
31st July 2025
51AQI
51AQI
1st August 2025
21AQI
21AQI
2nd August 2025
37AQI
37AQI
3rd August 2025
60AQI
60AQI
4th August 2025
72AQI
72AQI
5th August 2025
35AQI
35AQI
6th August 2025
29AQI
29AQI
7th August 2025
38AQI
38AQI
8th August 2025
55AQI
55AQI
9th August 2025
60AQI
60AQI
10th August 2025
63AQI
63AQI
11th August 2025
56AQI
56AQI
12th August 2025
53AQI
53AQI
13th August 2025
46AQI
46AQI
14th August 2025
40AQI
40AQI
15th August 2025
23AQI
23AQI
16th August 2025
37AQI
37AQI
17th August 2025
27AQI
27AQI
18th August 2025
15AQI
15AQI
19th August 2025
19AQI
19AQI
20th August 2025
21AQI
21AQI
21st August 2025
21AQI
21AQI
22nd August 2025
27AQI
27AQI
23rd August 2025
27AQI
27AQI
24th August 2025
27AQI
27AQI
25th August 2025
20AQI
20AQI
26th August 2025
15AQI
15AQI
27th August 2025
19AQI
19AQI
28th August 2025
23AQI
23AQI
29th August 2025
17AQI
17AQI
30th August 2025
17AQI
17AQI
31st August 2025
22AQI
22AQI
1st September 2025
27AQI
27AQI
2nd September 2025
33AQI
33AQI
3rd September 2025
30AQI
30AQI
4th September 2025
26AQI
26AQI
5th September 2025
30AQI
30AQI
6th September 2025
23AQI
23AQI
7th September 2025
19AQI
19AQI
8th September 2025
19AQI
19AQI
9th September 2025
22AQI
22AQI
10th September 2025
26AQI
26AQI
11th September 2025
29AQI
29AQI
12th September 2025
23AQI
23AQI
13th September 2025
33AQI
33AQI
14th September 2025
36AQI
36AQI
15th September 2025
25AQI
25AQI
16th September 2025
30AQI
30AQI
17th September 2025
32AQI
32AQI
18th September 2025
31AQI
31AQI
19th September 2025
17AQI
17AQI
20th September 2025
16AQI
16AQI
21st September 2025
21AQI
21AQI
22nd September 2025
24AQI
24AQI
23rd September 2025
32AQI
32AQI
24th September 2025
31AQI
31AQI
25th September 2025
20AQI
20AQI
26th September 2025
22AQI
22AQI
27th September 2025
23AQI
23AQI
28th September 2025
29AQI
29AQI
29th September 2025
38AQI
38AQI
30th September 2025
30AQI
30AQI
1st October 2025
25AQI
25AQI
2nd October 2025
42AQI
42AQI
3rd October 2025
46AQI
46AQI
4th October 2025
51AQI
51AQI
5th October 2025
59AQI
59AQI
6th October 2025
56AQI
56AQI
7th October 2025
39AQI
39AQI
8th October 2025
29AQI
29AQI
9th October 2025
32AQI
32AQI
10th October 2025
45AQI
45AQI
11th October 2025
48AQI
48AQI
12th October 2025
45AQI
45AQI
13th October 2025
44AQI
44AQI
14th October 2025
44AQI
44AQI
15th October 2025
34AQI
34AQI
16th October 2025
37AQI
37AQI
17th October 2025
41AQI
41AQI
18th October 2025
42AQI
42AQI
19th October 2025
43AQI
43AQI
20th October 2025
34AQI
34AQI
21st October 2025
26AQI
26AQI
22nd October 2025
30AQI
30AQI
23rd October 2025
24AQI
24AQI
24th October 2025
23AQI
23AQI
25th October 2025
21AQI
21AQI
26th October 2025
25AQI
25AQI
27th October 2025
27AQI
27AQI
28th October 2025
33AQI
33AQI
29th October 2025
34AQI
34AQI
30th October 2025
36AQI
36AQI
31st October 2025
15AQI
15AQI
1st November 2025
18AQI
18AQI
2nd November 2025
23AQI
23AQI
3rd November 2025
28AQI
28AQI
4th November 2025
18AQI
18AQI
5th November 2025
24AQI
24AQI
6th November 2025
22AQI
22AQI
7th November 2025
40AQI
40AQI
8th November 2025
33AQI
33AQI
9th November 2025
21AQI
21AQI
10th November 2025
17AQI
17AQI
11th November 2025
16AQI
16AQI
12th November 2025
41AQI
41AQI
13th November 2025
27AQI
27AQI
14th November 2025
24AQI
24AQI
15th November 2025
25AQI
25AQI
16th November 2025
21AQI
21AQI
17th November 2025
16AQI
16AQI
18th November 2025
20AQI
20AQI
19th November 2025
30AQI
30AQI
20th November 2025
45AQI
45AQI
21st November 2025
73AQI
73AQI
22nd November 2025
32AQI
32AQI
23rd November 2025
53AQI
53AQI
24th November 2025
38AQI
38AQI
25th November 2025
39AQI
39AQI
26th November 2025
52AQI
52AQI
27th November 2025
21AQI
21AQI
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
29AQI
28AQI
20AQI
19AQI
35AQI
39AQI
34AQI
27AQI
36AQI
30AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202530AQI
29
2
26
2
29
2
30
31
24
6
25
6
24
7
30
28
3
24
3
300
31
Highest AQI recorded in
July39AQI
Lowest AQI recorded in
May19AQI
202429AQI
30
1
22
7
30
1
30
31
27
2
28
3
21
10
30
31
30
28
3
338
27
Highest AQI recorded in
February36AQI
Lowest AQI recorded in
November23AQI
202337AQI
30
1
22
6
29
2
30
30
1
14
9
2
5
19
11
1
25
6
23
7
28
3
27
2
24
7
301
55
3
5
Highest AQI recorded in
June74AQI
Lowest AQI recorded in
November28AQI
202230AQI
23
8
20
2
30
1
30
30
1
30
24
2
29
30
1
29
1
30
1
307
15
Highest AQI recorded in
January40AQI
Lowest AQI recorded in
August21AQI
202130AQI
24
6
25
3
26
5
30
31
30
25
6
25
6
30
31
29
1
28
3
334
30
Highest AQI recorded in
August37AQI
Lowest AQI recorded in
September20AQI
202026AQI
13
21
18
30
31
31
30
31
24
6
28
3
257
9
Highest AQI recorded in
November36AQI
Lowest AQI recorded in
August20AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2023(Avg.)
37AQILeast Polluted Year Recorded
2020(Avg.)
26AQIOttawa's annual 2025 AQI (30) shows an average percentage change of -0.8% (improved AQI) compared to previous years: 2020 (26), 2021 (30), 2022 (30), 2023 (37), 2024 (29).
