Thunder Bay, 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
Thunder Bay, Ontario, Canada
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
23rd Nov 2022
52AQILowest AQI recorded on
5th Nov 2024
5AQISame Day Analysis (23rd November ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 30 of Good air quality, showing improvement over 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 23rd Nov - 24th Nov 2025
Thunder Bay, Ontario, Canada
AQI
Day
Night
.
8 AM23rd Nov 2025
5 PM
7 AM24th Nov 2025
Day time
Avg. Highest Time
12PM23rd Nov
33AQI
Avg. Lowest Time
10AM23rd Nov
22AQI
Night time
Avg. Highest Time
9PM23rd Nov
56AQI
Avg. Lowest Time
7AM24th Nov
33AQI
In the last 24 hours,
Thunder Bay's AQI reached its highest point of 56 at 9 PM during the Night, while the lowest point, 22, was recorded at 10 AM during the Day between 23rd Nov and 24th Nov 2025.
Day & Night AQI Trend : Oct - Nov 2025
Thunder Bay, Ontario, Canada
OctNov
25th - 26th26th - 27th27th - 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
Day
Night
25th Oct 2025228 AMAQI
25th Oct 2025289 AMAQI
25th Oct 20253710 AMAQI
25th Oct 20253511 AMAQI
25th Oct 20253312 PMAQI
25th Oct 2025331 PMAQI
25th Oct 2025332 PMAQI
25th Oct 2025333 PMAQI
25th Oct 2025254 PMAQI
25th Oct 2025265 PMAQI
25th Oct 2025286 PMAQI
25th Oct 2025287 PMAQI
25th Oct 2025368 PMAQI
25th Oct 2025399 PMAQI
25th Oct 20254910 PMAQI
25th Oct 20255111 PMAQI
26th Oct 20255012 AMAQI
26th Oct 2025421 AMAQI
26th Oct 2025352 AMAQI
26th Oct 2025303 AMAQI
26th Oct 2025284 AMAQI
26th Oct 2025365 AMAQI
26th Oct 2025396 AMAQI
26th Oct 2025397 AMAQI
5°C-2/15°C
26th Oct 2025428 AMAQI
26th Oct 2025489 AMAQI
26th Oct 20254610 AMAQI
26th Oct 20254011 AMAQI
26th Oct 20254212 PMAQI
26th Oct 2025401 PMAQI
26th Oct 2025312 PMAQI
26th Oct 2025283 PMAQI
26th Oct 2025324 PMAQI
26th Oct 2025335 PMAQI
26th Oct 2025306 PMAQI
26th Oct 2025287 PMAQI
26th Oct 2025328 PMAQI
26th Oct 2025479 PMAQI
26th Oct 20255110 PMAQI
26th Oct 20255011 PMAQI
27th Oct 20254212 AMAQI
27th Oct 2025421 AMAQI
27th Oct 2025332 AMAQI
27th Oct 2025243 AMAQI
27th Oct 2025264 AMAQI
27th Oct 2025235 AMAQI
27th Oct 2025226 AMAQI
27th Oct 2025227 AMAQI
6°C-1/15°C
27th Oct 2025228 AMAQI
27th Oct 2025309 AMAQI
27th Oct 20253310 AMAQI
27th Oct 20253711 AMAQI
27th Oct 20254712 PMAQI
27th Oct 2025351 PMAQI
27th Oct 2025282 PMAQI
27th Oct 2025243 PMAQI
27th Oct 2025264 PMAQI
27th Oct 2025285 PMAQI
27th Oct 2025246 PMAQI
27th Oct 2025227 PMAQI
27th Oct 2025228 PMAQI
27th Oct 2025189 PMAQI
27th Oct 20252010 PMAQI
27th Oct 20252211 PMAQI
28th Oct 20253012 AMAQI
28th Oct 2025221 AMAQI
28th Oct 2025172 AMAQI
28th Oct 2025173 AMAQI
28th Oct 2025174 AMAQI
28th Oct 2025175 AMAQI
28th Oct 2025176 AMAQI
28th Oct 2025177 AMAQI
7°C0/16°C
28th Oct 2025178 AMAQI
28th Oct 2025209 AMAQI
28th Oct 20252610 AMAQI
28th Oct 20252411 AMAQI
28th Oct 20252212 PMAQI
28th Oct 2025221 PMAQI
28th Oct 2025262 PMAQI
28th Oct 2025323 PMAQI
28th Oct 2025374 PMAQI
28th Oct 2025425 PMAQI
28th Oct 2025486 PMAQI
28th Oct 2025387 PMAQI
28th Oct 2025308 PMAQI
28th Oct 2025289 PMAQI
28th Oct 20253610 PMAQI
28th Oct 20253411 PMAQI
29th Oct 20253312 AMAQI
29th Oct 2025291 AMAQI
29th Oct 2025242 AMAQI
29th Oct 2025263 AMAQI
29th Oct 2025244 AMAQI
29th Oct 2025225 AMAQI
29th Oct 2025226 AMAQI
29th Oct 2025227 AMAQI
7°C3/11°C
29th Oct 2025228 AMAQI
29th Oct 2025349 AMAQI
29th Oct 20254210 AMAQI
29th Oct 20254411 AMAQI
29th Oct 20254012 PMAQI
29th Oct 2025351 PMAQI
29th Oct 2025302 PMAQI
29th Oct 2025243 PMAQI
29th Oct 2025224 PMAQI
29th Oct 2025225 PMAQI
29th Oct 2025226 PMAQI
29th Oct 2025267 PMAQI
29th Oct 2025328 PMAQI
29th Oct 2025339 PMAQI
29th Oct 20253310 PMAQI
29th Oct 20253311 PMAQI
30th Oct 20254412 AMAQI
30th Oct 2025421 AMAQI
30th Oct 2025392 AMAQI
30th Oct 2025353 AMAQI
30th Oct 2025304 AMAQI
30th Oct 2025285 AMAQI
30th Oct 2025326 AMAQI
30th Oct 2025307 AMAQI
6°C1/11°C
30th Oct 2025288 AMAQI
30th Oct 2025329 AMAQI
30th Oct 20253310 AMAQI
30th Oct 20253011 AMAQI
30th Oct 20252812 PMAQI
30th Oct 2025321 PMAQI
30th Oct 2025302 PMAQI
30th Oct 2025323 PMAQI
30th Oct 2025334 PMAQI
30th Oct 2025375 PMAQI
30th Oct 2025396 PMAQI
30th Oct 2025397 PMAQI
30th Oct 2025348 PMAQI
30th Oct 2025239 PMAQI
30th Oct 20253710 PMAQI
30th Oct 20253911 PMAQI
31st Oct 20253912 AMAQI
31st Oct 2025351 AMAQI
31st Oct 2025332 AMAQI
31st Oct 2025373 AMAQI
31st Oct 2025354 AMAQI
31st Oct 2025305 AMAQI
31st Oct 2025246 AMAQI
31st Oct 2025227 AMAQI
5°C4/7°C
31st Oct 2025268 AMAQI
31st Oct 2025289 AMAQI
31st Oct 20252410 AMAQI
31st Oct 20252211 AMAQI
31st Oct 20251812 PMAQI
31st Oct 2025171 PMAQI
31st Oct 2025172 PMAQI
31st Oct 2025173 PMAQI
31st Oct 2025174 PMAQI
31st Oct 2025175 PMAQI
31st Oct 2025176 PMAQI
31st Oct 2025207 PMAQI
31st Oct 2025148 PMAQI
31st Oct 2025199 PMAQI
31st Oct 20252210 PMAQI
31st Oct 20252211 PMAQI
1st Nov 20251412 AMAQI
1st Nov 2025111 AMAQI
1st Nov 2025112 AMAQI
1st Nov 2025163 AMAQI
1st Nov 2025174 AMAQI
1st Nov 2025175 AMAQI
1st Nov 2025126 AMAQI
1st Nov 2025117 AMAQI
5°C3/7°C
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 2025157 PMAQI
1st Nov 2025258 PMAQI
1st Nov 2025249 PMAQI
1st Nov 20252610 PMAQI
1st Nov 20253611 PMAQI
2nd Nov 20252712 AMAQI
2nd Nov 2025221 AMAQI
2nd Nov 2025132 AMAQI
2nd Nov 2025113 AMAQI
2nd Nov 2025164 AMAQI
2nd Nov 2025125 AMAQI
2nd Nov 2025116 AMAQI
2nd Nov 2025117 AMAQI
2°C-2/5°C
2nd Nov 2025128 AMAQI
2nd Nov 2025169 AMAQI
2nd Nov 20252010 AMAQI
2nd Nov 20252211 AMAQI
2nd Nov 20252212 PMAQI
2nd Nov 2025221 PMAQI
2nd Nov 2025222 PMAQI
2nd Nov 2025223 PMAQI
2nd Nov 2025224 PMAQI
2nd Nov 2025225 PMAQI
2nd Nov 2025226 PMAQI
2nd Nov 2025227 PMAQI
2nd Nov 2025228 PMAQI
2nd Nov 2025229 PMAQI
2nd Nov 20252210 PMAQI
2nd Nov 20252211 PMAQI
3rd Nov 20252212 AMAQI
3rd Nov 2025221 AMAQI
3rd Nov 2025182 AMAQI
3rd Nov 2025123 AMAQI
3rd Nov 2025114 AMAQI
3rd Nov 2025115 AMAQI
3rd Nov 2025116 AMAQI
3rd Nov 2025117 AMAQI
4°C-2/11°C
3rd Nov 2025168 AMAQI
3rd Nov 2025179 AMAQI
3rd Nov 20251710 AMAQI
3rd Nov 20252111 AMAQI
3rd Nov 20252212 PMAQI
3rd Nov 2025221 PMAQI
3rd Nov 2025222 PMAQI
3rd Nov 2025223 PMAQI
3rd Nov 2025124 PMAQI
3rd Nov 2025115 PMAQI
3rd Nov 2025266 PMAQI
3rd Nov 2025147 PMAQI
3rd Nov 2025198 PMAQI
3rd Nov 2025149 PMAQI
3rd Nov 20252510 PMAQI
3rd Nov 20252811 PMAQI
4th Nov 20252412 AMAQI
4th Nov 2025221 AMAQI
4th Nov 2025222 AMAQI
4th Nov 2025183 AMAQI
4th Nov 2025174 AMAQI
4th Nov 2025215 AMAQI
4th Nov 2025186 AMAQI
4th Nov 2025127 AMAQI
8°C5/14°C
4th Nov 2025168 AMAQI
4th Nov 2025179 AMAQI
4th Nov 20251710 AMAQI
4th Nov 20252111 AMAQI
4th Nov 20252212 PMAQI
4th Nov 2025221 PMAQI
4th Nov 2025222 PMAQI
4th Nov 2025273 PMAQI
4th Nov 2025284 PMAQI
4th Nov 2025285 PMAQI
4th Nov 2025326 PMAQI
4th Nov 2025387 PMAQI
4th Nov 2025358 PMAQI
4th Nov 2025339 PMAQI
4th Nov 20253510 PMAQI
4th Nov 20253211 PMAQI
5th Nov 20252212 AMAQI
5th Nov 2025221 AMAQI
5th Nov 2025222 AMAQI
5th Nov 2025163 AMAQI
5th Nov 2025114 AMAQI
5th Nov 2025115 AMAQI
5th Nov 2025146 AMAQI
5th Nov 2025147 AMAQI
6°C0/15°C
5th Nov 2025118 AMAQI
5th Nov 2025119 AMAQI
5th Nov 20252010 AMAQI
5th Nov 20251111 AMAQI
5th Nov 20251112 PMAQI
5th Nov 2025111 PMAQI
5th Nov 2025112 PMAQI
5th Nov 2025113 PMAQI
5th Nov 2025114 PMAQI
5th Nov 2025125 PMAQI
5th Nov 2025136 PMAQI
5th Nov 2025147 PMAQI
5th Nov 2025128 PMAQI
5th Nov 2025119 PMAQI
5th Nov 20251110 PMAQI
5th Nov 20251211 PMAQI
6th Nov 20251612 AMAQI
6th Nov 2025131 AMAQI
6th Nov 2025112 AMAQI
6th Nov 2025153 AMAQI
6th Nov 2025174 AMAQI
6th Nov 2025175 AMAQI
6th Nov 2025176 AMAQI
6th Nov 2025197 AMAQI
4°C1/8°C
6th Nov 2025218 AMAQI
6th Nov 2025149 AMAQI
6th Nov 20251410 AMAQI
6th Nov 20251411 AMAQI
6th Nov 20251312 PMAQI
6th Nov 2025161 PMAQI
6th Nov 2025172 PMAQI
6th Nov 2025163 PMAQI
6th Nov 2025174 PMAQI
6th Nov 2025175 PMAQI
6th Nov 2025206 PMAQI
6th Nov 2025227 PMAQI
6th Nov 2025228 PMAQI
6th Nov 2025239 PMAQI
6th Nov 20252510 PMAQI
6th Nov 20252511 PMAQI
7th Nov 20253012 AMAQI
7th Nov 2025221 AMAQI
7th Nov 2025182 AMAQI
7th Nov 2025203 AMAQI
7th Nov 2025214 AMAQI
7th Nov 2025215 AMAQI
7th Nov 2025206 AMAQI
7th Nov 2025177 AMAQI
2°C-1/7°C
7th Nov 2025178 AMAQI
7th Nov 2025219 AMAQI
7th Nov 20252410 AMAQI
7th Nov 20252511 AMAQI
7th Nov 20252512 PMAQI
7th Nov 2025231 PMAQI
7th Nov 2025232 PMAQI
7th Nov 2025283 PMAQI
7th Nov 2025224 PMAQI
7th Nov 2025135 PMAQI
7th Nov 2025196 PMAQI
7th Nov 2025217 PMAQI
7th Nov 2025248 PMAQI
7th Nov 2025179 PMAQI
7th Nov 20252010 PMAQI
7th Nov 20252111 PMAQI
8th Nov 20251312 AMAQI
8th Nov 2025101 AMAQI
8th Nov 2025102 AMAQI
8th Nov 2025203 AMAQI
8th Nov 2025224 AMAQI
8th Nov 2025205 AMAQI
8th Nov 2025126 AMAQI
8th Nov 2025117 AMAQI
0°C-5/3°C
8th Nov 2025168 AMAQI
8th Nov 2025179 AMAQI
8th Nov 20251710 AMAQI
8th Nov 20251711 AMAQI
8th Nov 20251712 PMAQI
8th Nov 2025121 PMAQI
8th Nov 2025112 PMAQI
8th Nov 2025113 PMAQI
8th Nov 2025114 PMAQI
8th Nov 2025295 PMAQI
8th Nov 2025296 PMAQI
8th Nov 2025327 PMAQI
8th Nov 2025238 PMAQI
8th Nov 2025139 PMAQI
8th Nov 20252410 PMAQI
8th Nov 20252811 PMAQI
9th Nov 20251512 AMAQI
9th Nov 2025121 AMAQI
9th Nov 2025112 AMAQI
9th Nov 2025113 AMAQI
9th Nov 202584 AMAQI
9th Nov 2025155 AMAQI
9th Nov 2025136 AMAQI
9th Nov 2025127 AMAQI
-6°C-9/-3°C
9th Nov 2025108 AMAQI
9th Nov 2025169 AMAQI
9th Nov 20252610 AMAQI
9th Nov 20252311 AMAQI
9th Nov 20252212 PMAQI
9th Nov 2025221 PMAQI
9th Nov 2025222 PMAQI
9th Nov 2025273 PMAQI
9th Nov 2025134 PMAQI
9th Nov 2025115 PMAQI
9th Nov 2025116 PMAQI
9th Nov 2025167 PMAQI
9th Nov 2025128 PMAQI
9th Nov 2025119 PMAQI
9th Nov 20251110 PMAQI
9th Nov 20251111 PMAQI
10th Nov 20251612 AMAQI
10th Nov 2025121 AMAQI
10th Nov 2025112 AMAQI
10th Nov 2025153 AMAQI
10th Nov 2025124 AMAQI
10th Nov 2025115 AMAQI
10th Nov 2025116 AMAQI
10th Nov 2025117 AMAQI
-7°C-11/-2°C
10th Nov 2025138 AMAQI
10th Nov 2025119 AMAQI
10th Nov 20251610 AMAQI
10th Nov 20251511 AMAQI
10th Nov 20251512 PMAQI
10th Nov 2025251 PMAQI
10th Nov 2025242 PMAQI
10th Nov 2025203 PMAQI
10th Nov 2025134 PMAQI
10th Nov 2025115 PMAQI
10th Nov 2025116 PMAQI
10th Nov 2025167 PMAQI
10th Nov 2025228 PMAQI
10th Nov 2025229 PMAQI
10th Nov 20252010 PMAQI
10th Nov 20251111 PMAQI
11th Nov 20251112 AMAQI
11th Nov 2025111 AMAQI
11th Nov 2025112 AMAQI
11th Nov 2025113 AMAQI
11th Nov 2025164 AMAQI
11th Nov 2025175 AMAQI
11th Nov 2025156 AMAQI
11th Nov 2025177 AMAQI
-5°C-9/-1°C
11th Nov 2025178 AMAQI
11th Nov 2025179 AMAQI
11th Nov 20251810 AMAQI
11th Nov 20251711 AMAQI
11th Nov 20251712 PMAQI
11th Nov 2025171 PMAQI
11th Nov 2025222 PMAQI
11th Nov 2025223 PMAQI
11th Nov 2025224 PMAQI
11th Nov 2025225 PMAQI
11th Nov 2025246 PMAQI
11th Nov 2025247 PMAQI
11th Nov 2025288 PMAQI
11th Nov 2025289 PMAQI
11th Nov 20252510 PMAQI
11th Nov 20252411 PMAQI
12th Nov 20252012 AMAQI
12th Nov 2025171 AMAQI
12th Nov 2025172 AMAQI
12th Nov 2025153 AMAQI
12th Nov 2025184 AMAQI
12th Nov 2025175 AMAQI
12th Nov 2025176 AMAQI
12th Nov 2025187 AMAQI
-2°C-7/3°C
12th Nov 2025188 AMAQI
12th Nov 2025189 AMAQI
12th Nov 20251810 AMAQI
12th Nov 20251711 AMAQI
12th Nov 20251712 PMAQI
12th Nov 2025161 PMAQI
12th Nov 2025112 PMAQI
12th Nov 2025113 PMAQI
12th Nov 2025114 PMAQI
12th Nov 2025115 PMAQI
12th Nov 2025206 PMAQI
12th Nov 2025227 PMAQI
12th Nov 2025228 PMAQI
12th Nov 2025229 PMAQI
12th Nov 20252210 PMAQI
12th Nov 20252211 PMAQI
13th Nov 20252212 AMAQI
13th Nov 2025191 AMAQI
13th Nov 2025172 AMAQI
13th Nov 2025173 AMAQI
13th Nov 2025174 AMAQI
13th Nov 2025175 AMAQI
13th Nov 2025176 AMAQI
13th Nov 2025127 AMAQI
3°C0/5°C
13th Nov 2025168 AMAQI
13th Nov 2025179 AMAQI
13th Nov 20251710 AMAQI
13th Nov 20251711 AMAQI
13th Nov 20252012 PMAQI
13th Nov 2025221 PMAQI
13th Nov 2025222 PMAQI
13th Nov 2025223 PMAQI
13th Nov 2025224 PMAQI
13th Nov 2025225 PMAQI
13th Nov 2025276 PMAQI
13th Nov 2025287 PMAQI
13th Nov 2025288 PMAQI
13th Nov 2025379 PMAQI
13th Nov 20253410 PMAQI
13th Nov 20253811 PMAQI
14th Nov 20253912 AMAQI
14th Nov 2025351 AMAQI
14th Nov 2025382 AMAQI
14th Nov 2025393 AMAQI
14th Nov 2025344 AMAQI
14th Nov 2025335 AMAQI
14th Nov 2025206 AMAQI
14th Nov 2025177 AMAQI
3°C-2/12°C
14th Nov 2025318 AMAQI
14th Nov 2025209 AMAQI
14th Nov 20251710 AMAQI
14th Nov 20251711 AMAQI
14th Nov 20251712 PMAQI
14th Nov 2025211 PMAQI
14th Nov 2025182 PMAQI
14th Nov 2025173 PMAQI
14th Nov 2025154 PMAQI
14th Nov 2025195 PMAQI
14th Nov 2025186 PMAQI
14th Nov 2025177 PMAQI
14th Nov 2025268 PMAQI
14th Nov 2025289 PMAQI
14th Nov 20252810 PMAQI
14th Nov 20252811 PMAQI
15th Nov 20252812 AMAQI
15th Nov 2025281 AMAQI
15th Nov 2025282 AMAQI
15th Nov 2025383 AMAQI
15th Nov 2025434 AMAQI
15th Nov 2025495 AMAQI
15th Nov 2025416 AMAQI
15th Nov 2025397 AMAQI
2°C-5/12°C
15th Nov 2025398 AMAQI
15th Nov 2025259 AMAQI
15th Nov 20251810 AMAQI
15th Nov 20251711 AMAQI
15th Nov 20252112 PMAQI
15th Nov 2025271 PMAQI
15th Nov 2025282 PMAQI
15th Nov 2025283 PMAQI
15th Nov 2025234 PMAQI
15th Nov 2025225 PMAQI
15th Nov 2025226 PMAQI
15th Nov 2025227 PMAQI
15th Nov 2025228 PMAQI
15th Nov 2025229 PMAQI
15th Nov 20252210 PMAQI
15th Nov 20252211 PMAQI
16th Nov 20252212 AMAQI
16th Nov 2025221 AMAQI
16th Nov 2025182 AMAQI
16th Nov 2025173 AMAQI
16th Nov 2025124 AMAQI
16th Nov 2025115 AMAQI
16th Nov 2025116 AMAQI
16th Nov 2025137 AMAQI
5°C1/9°C
16th Nov 2025148 AMAQI
16th Nov 2025139 AMAQI
16th Nov 20251210 AMAQI
16th Nov 20251111 AMAQI
16th Nov 20251112 PMAQI
16th Nov 2025241 PMAQI
16th Nov 2025132 PMAQI
16th Nov 2025113 PMAQI
16th Nov 2025114 PMAQI
16th Nov 2025115 PMAQI
16th Nov 2025366 PMAQI
16th Nov 2025397 PMAQI
16th Nov 2025258 PMAQI
16th Nov 2025139 PMAQI
16th Nov 20252010 PMAQI
16th Nov 20252211 PMAQI
17th Nov 20251312 AMAQI
17th Nov 2025111 AMAQI
17th Nov 2025202 AMAQI
17th Nov 2025123 AMAQI
17th Nov 2025164 AMAQI
17th Nov 2025175 AMAQI
17th Nov 2025216 AMAQI
17th Nov 2025187 AMAQI
-1°C-5/4°C
17th Nov 2025178 AMAQI
17th Nov 2025129 AMAQI
17th Nov 20251610 AMAQI
17th Nov 20251211 AMAQI
17th Nov 20251112 PMAQI
17th Nov 2025111 PMAQI
17th Nov 2025112 PMAQI
17th Nov 2025113 PMAQI
17th Nov 2025164 PMAQI
17th Nov 2025125 PMAQI
17th Nov 2025116 PMAQI
17th Nov 2025267 PMAQI
17th Nov 2025328 PMAQI
17th Nov 2025339 PMAQI
17th Nov 20254210 PMAQI
17th Nov 20254011 PMAQI
18th Nov 20254812 AMAQI
18th Nov 2025371 AMAQI
18th Nov 2025292 AMAQI
18th Nov 2025283 AMAQI
18th Nov 2025284 AMAQI
18th Nov 2025285 AMAQI
18th Nov 2025286 AMAQI
18th Nov 2025287 AMAQI
-3°C-8/5°C
18th Nov 2025288 AMAQI
18th Nov 2025139 AMAQI
18th Nov 20252910 AMAQI
18th Nov 20253311 AMAQI
18th Nov 20253312 PMAQI
18th Nov 2025291 PMAQI
18th Nov 2025282 PMAQI
18th Nov 2025283 PMAQI
18th Nov 2025184 PMAQI
18th Nov 2025175 PMAQI
18th Nov 2025176 PMAQI
18th Nov 2025247 PMAQI
18th Nov 2025258 PMAQI
18th Nov 2025339 PMAQI
18th Nov 20253810 PMAQI
18th Nov 20254811 PMAQI
19th Nov 20254212 AMAQI
19th Nov 2025391 AMAQI
19th Nov 2025432 AMAQI
19th Nov 2025403 AMAQI
19th Nov 2025394 AMAQI
19th Nov 2025345 AMAQI
19th Nov 2025336 AMAQI
19th Nov 2025337 AMAQI
-4°C-10/6°C
19th Nov 2025428 AMAQI
19th Nov 2025409 AMAQI
19th Nov 20253910 AMAQI
19th Nov 20253911 AMAQI
19th Nov 20253912 PMAQI
19th Nov 2025341 PMAQI
19th Nov 2025332 PMAQI
19th Nov 2025333 PMAQI
19th Nov 2025384 PMAQI
19th Nov 2025485 PMAQI
19th Nov 2025356 PMAQI
19th Nov 2025337 PMAQI
19th Nov 2025518 PMAQI
19th Nov 2025549 PMAQI
19th Nov 20253510 PMAQI
19th Nov 20252411 PMAQI
20th Nov 20253012 AMAQI
20th Nov 2025291 AMAQI
20th Nov 2025322 AMAQI
20th Nov 2025333 AMAQI
20th Nov 2025294 AMAQI
20th Nov 2025235 AMAQI
20th Nov 2025226 AMAQI
20th Nov 2025227 AMAQI
-2°C-7/7°C
20th Nov 2025228 AMAQI
20th Nov 2025229 AMAQI
20th Nov 20252610 AMAQI
20th Nov 20252811 AMAQI
20th Nov 20253212 PMAQI
20th Nov 2025251 PMAQI
20th Nov 2025272 PMAQI
20th Nov 2025233 PMAQI
20th Nov 2025134 PMAQI
20th Nov 2025165 PMAQI
20th Nov 2025176 PMAQI
20th Nov 2025177 PMAQI
20th Nov 2025178 PMAQI
20th Nov 2025179 PMAQI
20th Nov 20253010 PMAQI
20th Nov 20252911 PMAQI
21st Nov 20252312 AMAQI
21st Nov 2025221 AMAQI
21st Nov 2025182 AMAQI
21st Nov 2025223 AMAQI
21st Nov 2025224 AMAQI
21st Nov 2025275 AMAQI
21st Nov 2025376 AMAQI
21st Nov 2025397 AMAQI
3°C1/7°C
21st Nov 2025398 AMAQI
21st Nov 2025349 AMAQI
21st Nov 20252410 AMAQI
21st Nov 20252211 AMAQI
21st Nov 20251312 PMAQI
21st Nov 2025111 PMAQI
21st Nov 2025162 PMAQI
21st Nov 2025173 PMAQI
21st Nov 2025174 PMAQI
21st Nov 2025125 PMAQI
21st Nov 2025206 PMAQI
21st Nov 2025227 PMAQI
21st Nov 2025378 PMAQI
21st Nov 2025399 PMAQI
21st Nov 20254810 PMAQI
21st Nov 20255211 PMAQI
22nd Nov 20255112 AMAQI
22nd Nov 2025401 AMAQI
22nd Nov 2025342 AMAQI
22nd Nov 2025383 AMAQI
22nd Nov 2025394 AMAQI
22nd Nov 2025395 AMAQI
22nd Nov 2025396 AMAQI
22nd Nov 2025397 AMAQI
0°C-1/2°C
22nd Nov 2025348 AMAQI
22nd Nov 2025339 AMAQI
22nd Nov 20253310 AMAQI
22nd Nov 20253811 AMAQI
22nd Nov 20254312 PMAQI
22nd Nov 2025401 PMAQI
22nd Nov 2025342 PMAQI
22nd Nov 2025483 PMAQI
22nd Nov 2025404 PMAQI
22nd Nov 2025435 PMAQI
22nd Nov 2025496 PMAQI
22nd Nov 2025547 PMAQI
22nd Nov 2025588 PMAQI
22nd Nov 2025549 PMAQI
22nd Nov 20254110 PMAQI
22nd Nov 20253011 PMAQI
23rd Nov 20253012 AMAQI
23rd Nov 2025331 AMAQI
23rd Nov 2025332 AMAQI
23rd Nov 2025243 AMAQI
23rd Nov 2025184 AMAQI
23rd Nov 2025175 AMAQI
23rd Nov 2025176 AMAQI
23rd Nov 2025177 AMAQI
-2°C-6/2°C
23rd Nov 2025278 AMAQI
23rd Nov 2025239 AMAQI
23rd Nov 20252210 AMAQI
23rd Nov 20253011 AMAQI
23rd Nov 20253312 PMAQI
23rd Nov 2025331 PMAQI
23rd Nov 2025292 PMAQI
23rd Nov 2025283 PMAQI
23rd Nov 2025284 PMAQI
23rd Nov 2025285 PMAQI
23rd Nov 2025386 PMAQI
23rd Nov 2025447 PMAQI
23rd Nov 2025558 PMAQI
23rd Nov 2025569 PMAQI
23rd Nov 20255610 PMAQI
23rd Nov 20255211 PMAQI
24th Nov 20255412 AMAQI
24th Nov 2025511 AMAQI
24th Nov 2025522 AMAQI
24th Nov 2025473 AMAQI
24th Nov 2025494 AMAQI
24th Nov 2025405 AMAQI
24th Nov 2025346 AMAQI
24th Nov 2025337 AMAQI
3°C0/9°C
8 AM
12 PM
5 PM
12 AM
7 AM
--°C/°C
Day time
Avg. Highest Time
10 AM - 1 PM
24AQI
4 hours / Day
120 hours / Month
Avg. Lowest Time
4 PM
21AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 10 AM to 1 PM (Avg. 24), while the lowest AQI was between 4 PM to 4 PM (Avg. 21).
Night time
Avg. Highest Time
10 PM - 11 PM
30AQI
2 hours / Day
60 hours / Month
Avg. Lowest Time
7 AM
21AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 10 PM to 11 PM (Avg. 30), while the lowest AQI was between 7 AM to 7 AM (Avg. 21).
2025 Days Vs Air Quality
Thunder Bay, Ontario, Canada
2025
87%
286
11%
37
0.9%
3
0.3%
1
Total number of days with different AQI categories in last 328 days in 2025 (37 days remaining)
Good
286 DaysModerate
37 DaysPoor
3 DaysUnhealthy
1 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 87%
Health Risk Level:
Low
In 2025, 87% of 328 days were within WHO’s safe air quality limits. The risk of health issues is Low, but the long-term effects, especially on vulnerable individuals, remain uncertain.
Annual Air Quality Insights
Thunder Bay, 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
18AQI
18AQI
2nd January 2025
22AQI
22AQI
3rd January 2025
24AQI
24AQI
4th January 2025
26AQI
26AQI
5th January 2025
26AQI
26AQI
6th January 2025
24AQI
24AQI
7th January 2025
24AQI
24AQI
8th January 2025
24AQI
24AQI
9th January 2025
34AQI
34AQI
10th January 2025
41AQI
41AQI
11th January 2025
25AQI
25AQI
12th January 2025
23AQI
23AQI
13th January 2025
23AQI
23AQI
14th January 2025
25AQI
25AQI
15th January 2025
29AQI
29AQI
16th January 2025
26AQI
26AQI
17th January 2025
26AQI
26AQI
18th January 2025
26AQI
26AQI
19th January 2025
26AQI
26AQI
20th January 2025
24AQI
24AQI
21st January 2025
27AQI
27AQI
22nd January 2025
27AQI
27AQI
23rd January 2025
25AQI
25AQI
24th January 2025
28AQI
28AQI
25th January 2025
32AQI
32AQI
26th January 2025
28AQI
28AQI
27th January 2025
29AQI
29AQI
28th January 2025
24AQI
24AQI
29th January 2025
26AQI
26AQI
30th January 2025
27AQI
27AQI
31st January 2025
27AQI
27AQI
1st February 2025
25AQI
25AQI
2nd February 2025
28AQI
28AQI
3rd February 2025
27AQI
27AQI
4th February 2025
24AQI
24AQI
5th February 2025
23AQI
23AQI
6th February 2025
25AQI
25AQI
7th February 2025
26AQI
26AQI
8th February 2025
27AQI
27AQI
9th February 2025
29AQI
29AQI
10th February 2025
30AQI
30AQI
11th February 2025
36AQI
36AQI
12th February 2025
45AQI
45AQI
13th February 2025
28AQI
28AQI
14th February 2025
34AQI
34AQI
15th February 2025
26AQI
26AQI
16th February 2025
22AQI
22AQI
17th February 2025
22AQI
22AQI
18th February 2025
22AQI
22AQI
19th February 2025
27AQI
27AQI
20th February 2025
25AQI
25AQI
21st February 2025
28AQI
28AQI
22nd February 2025
32AQI
32AQI
23rd February 2025
34AQI
34AQI
24th February 2025
35AQI
35AQI
25th February 2025
25AQI
25AQI
26th February 2025
31AQI
31AQI
27th February 2025
24AQI
24AQI
28th February 2025
26AQI
26AQI
1st March 2025
29AQI
29AQI
2nd March 2025
29AQI
29AQI
3rd March 2025
37AQI
37AQI
4th March 2025
34AQI
34AQI
5th March 2025
28AQI
28AQI
6th March 2025
28AQI
28AQI
7th March 2025
27AQI
27AQI
8th March 2025
26AQI
26AQI
9th March 2025
30AQI
30AQI
10th March 2025
25AQI
25AQI
11th March 2025
29AQI
29AQI
12th March 2025
25AQI
25AQI
13th March 2025
25AQI
25AQI
14th March 2025
28AQI
28AQI
15th March 2025
63AQI
63AQI
16th March 2025
19AQI
19AQI
17th March 2025
23AQI
23AQI
18th March 2025
18AQI
18AQI
19th March 2025
25AQI
25AQI
20th March 2025
19AQI
19AQI
21st March 2025
21AQI
21AQI
22nd March 2025
26AQI
26AQI
23rd March 2025
26AQI
26AQI
24th March 2025
20AQI
20AQI
25th March 2025
24AQI
24AQI
26th March 2025
26AQI
26AQI
27th March 2025
18AQI
18AQI
28th March 2025
19AQI
19AQI
29th March 2025
16AQI
16AQI
30th March 2025
17AQI
17AQI
31st March 2025
17AQI
17AQI
1st April 2025
21AQI
21AQI
2nd April 2025
18AQI
18AQI
3rd April 2025
17AQI
17AQI
4th April 2025
22AQI
22AQI
5th April 2025
17AQI
17AQI
6th April 2025
18AQI
18AQI
7th April 2025
15AQI
15AQI
8th April 2025
16AQI
16AQI
9th April 2025
20AQI
20AQI
10th April 2025
29AQI
29AQI
11th April 2025
34AQI
34AQI
12th April 2025
36AQI
36AQI
13th April 2025
47AQI
47AQI
14th April 2025
29AQI
29AQI
15th April 2025
14AQI
14AQI
16th April 2025
16AQI
16AQI
17th April 2025
18AQI
18AQI
18th April 2025
23AQI
23AQI
19th April 2025
16AQI
16AQI
20th April 2025
20AQI
20AQI
21st April 2025
14AQI
14AQI
22nd April 2025
18AQI
18AQI
23rd April 2025
15AQI
15AQI
24th April 2025
15AQI
15AQI
25th April 2025
17AQI
17AQI
26th April 2025
17AQI
17AQI
27th April 2025
22AQI
22AQI
28th April 2025
25AQI
25AQI
29th April 2025
16AQI
16AQI
30th April 2025
15AQI
15AQI
1st May 2025
18AQI
18AQI
2nd May 2025
17AQI
17AQI
3rd May 2025
15AQI
15AQI
4th May 2025
16AQI
16AQI
5th May 2025
20AQI
20AQI
6th May 2025
26AQI
26AQI
7th May 2025
18AQI
18AQI
8th May 2025
17AQI
17AQI
9th May 2025
26AQI
26AQI
10th May 2025
20AQI
20AQI
11th May 2025
17AQI
17AQI
12th May 2025
26AQI
26AQI
13th May 2025
36AQI
36AQI
14th May 2025
33AQI
33AQI
15th May 2025
25AQI
25AQI
16th May 2025
24AQI
24AQI
17th May 2025
16AQI
16AQI
18th May 2025
17AQI
17AQI
19th May 2025
14AQI
14AQI
20th May 2025
14AQI
14AQI
21st May 2025
17AQI
17AQI
22nd May 2025
14AQI
14AQI
23rd May 2025
12AQI
12AQI
24th May 2025
15AQI
15AQI
25th May 2025
18AQI
18AQI
26th May 2025
19AQI
19AQI
27th May 2025
22AQI
22AQI
28th May 2025
23AQI
23AQI
29th May 2025
31AQI
31AQI
30th May 2025
29AQI
29AQI
31st May 2025
31AQI
31AQI
1st June 2025
29AQI
29AQI
2nd June 2025
30AQI
30AQI
3rd June 2025
49AQI
49AQI
4th June 2025
45AQI
45AQI
5th June 2025
55AQI
55AQI
6th June 2025
47AQI
47AQI
7th June 2025
59AQI
59AQI
8th June 2025
54AQI
54AQI
9th June 2025
59AQI
59AQI
10th June 2025
55AQI
55AQI
11th June 2025
61AQI
61AQI
12th June 2025
46AQI
46AQI
13th June 2025
30AQI
30AQI
14th June 2025
25AQI
25AQI
15th June 2025
28AQI
28AQI
16th June 2025
32AQI
32AQI
17th June 2025
30AQI
30AQI
18th June 2025
42AQI
42AQI
19th June 2025
36AQI
36AQI
20th June 2025
30AQI
30AQI
21st June 2025
33AQI
33AQI
22nd June 2025
33AQI
33AQI
23rd June 2025
33AQI
33AQI
24th June 2025
31AQI
31AQI
25th June 2025
38AQI
38AQI
26th June 2025
36AQI
36AQI
27th June 2025
27AQI
27AQI
28th June 2025
28AQI
28AQI
29th June 2025
26AQI
26AQI
30th June 2025
24AQI
24AQI
1st July 2025
31AQI
31AQI
2nd July 2025
39AQI
39AQI
3rd July 2025
38AQI
38AQI
4th July 2025
36AQI
36AQI
5th July 2025
43AQI
43AQI
6th July 2025
41AQI
41AQI
7th July 2025
29AQI
29AQI
8th July 2025
29AQI
29AQI
9th July 2025
30AQI
30AQI
10th July 2025
31AQI
31AQI
11th July 2025
34AQI
34AQI
12th July 2025
36AQI
36AQI
13th July 2025
54AQI
54AQI
14th July 2025
80AQI
80AQI
15th July 2025
84AQI
84AQI
16th July 2025
50AQI
50AQI
17th July 2025
38AQI
38AQI
18th July 2025
53AQI
53AQI
19th July 2025
42AQI
42AQI
20th July 2025
54AQI
54AQI
21st July 2025
54AQI
54AQI
22nd July 2025
50AQI
50AQI
23rd July 2025
52AQI
52AQI
24th July 2025
54AQI
54AQI
25th July 2025
54AQI
54AQI
26th July 2025
60AQI
60AQI
27th July 2025
42AQI
42AQI
28th July 2025
41AQI
41AQI
29th July 2025
57AQI
57AQI
30th July 2025
71AQI
71AQI
31st July 2025
129AQI
129AQI
1st August 2025
157AQI
157AQI
2nd August 2025
146AQI
146AQI
3rd August 2025
103AQI
103AQI
4th August 2025
79AQI
79AQI
5th August 2025
81AQI
81AQI
6th August 2025
68AQI
68AQI
7th August 2025
67AQI
67AQI
8th August 2025
56AQI
56AQI
9th August 2025
54AQI
54AQI
10th August 2025
42AQI
42AQI
11th August 2025
54AQI
54AQI
12th August 2025
63AQI
63AQI
13th August 2025
65AQI
65AQI
14th August 2025
58AQI
58AQI
15th August 2025
57AQI
57AQI
16th August 2025
44AQI
44AQI
17th August 2025
19AQI
19AQI
18th August 2025
17AQI
17AQI
19th August 2025
22AQI
22AQI
20th August 2025
20AQI
20AQI
21st August 2025
22AQI
22AQI
22nd August 2025
31AQI
31AQI
23rd August 2025
23AQI
23AQI
24th August 2025
16AQI
16AQI
25th August 2025
18AQI
18AQI
26th August 2025
23AQI
23AQI
27th August 2025
28AQI
28AQI
28th August 2025
27AQI
27AQI
29th August 2025
20AQI
20AQI
30th August 2025
24AQI
24AQI
31st August 2025
39AQI
39AQI
1st September 2025
43AQI
43AQI
2nd September 2025
39AQI
39AQI
3rd September 2025
30AQI
30AQI
4th September 2025
21AQI
21AQI
5th September 2025
17AQI
17AQI
6th September 2025
16AQI
16AQI
7th September 2025
19AQI
19AQI
8th September 2025
27AQI
27AQI
9th September 2025
41AQI
41AQI
10th September 2025
38AQI
38AQI
11th September 2025
25AQI
25AQI
12th September 2025
38AQI
38AQI
13th September 2025
42AQI
42AQI
14th September 2025
45AQI
45AQI
15th September 2025
48AQI
48AQI
16th September 2025
55AQI
55AQI
17th September 2025
54AQI
54AQI
18th September 2025
31AQI
31AQI
19th September 2025
20AQI
20AQI
20th September 2025
19AQI
19AQI
21st September 2025
23AQI
23AQI
22nd September 2025
25AQI
25AQI
23rd September 2025
27AQI
27AQI
24th September 2025
30AQI
30AQI
25th September 2025
30AQI
30AQI
26th September 2025
25AQI
25AQI
27th September 2025
28AQI
28AQI
28th September 2025
24AQI
24AQI
29th September 2025
35AQI
35AQI
30th September 2025
23AQI
23AQI
1st October 2025
23AQI
23AQI
2nd October 2025
46AQI
46AQI
3rd October 2025
53AQI
53AQI
4th October 2025
59AQI
59AQI
5th October 2025
61AQI
61AQI
6th October 2025
36AQI
36AQI
7th October 2025
28AQI
28AQI
8th October 2025
21AQI
21AQI
9th October 2025
34AQI
34AQI
10th October 2025
29AQI
29AQI
11th October 2025
30AQI
30AQI
12th October 2025
32AQI
32AQI
13th October 2025
41AQI
41AQI
14th October 2025
23AQI
23AQI
15th October 2025
29AQI
29AQI
16th October 2025
25AQI
25AQI
17th October 2025
52AQI
52AQI
18th October 2025
51AQI
51AQI
19th October 2025
31AQI
31AQI
20th October 2025
24AQI
24AQI
21st October 2025
19AQI
19AQI
22nd October 2025
11AQI
11AQI
23rd October 2025
11AQI
11AQI
24th October 2025
19AQI
19AQI
25th October 2025
31AQI
31AQI
26th October 2025
38AQI
38AQI
27th October 2025
28AQI
28AQI
28th October 2025
27AQI
27AQI
29th October 2025
29AQI
29AQI
30th October 2025
34AQI
34AQI
31st October 2025
24AQI
24AQI
1st November 2025
16AQI
16AQI
2nd November 2025
19AQI
19AQI
3rd November 2025
18AQI
18AQI
4th November 2025
25AQI
25AQI
5th November 2025
14AQI
14AQI
6th November 2025
18AQI
18AQI
7th November 2025
21AQI
21AQI
8th November 2025
19AQI
19AQI
9th November 2025
14AQI
14AQI
10th November 2025
15AQI
15AQI
11th November 2025
19AQI
19AQI
12th November 2025
18AQI
18AQI
13th November 2025
23AQI
23AQI
14th November 2025
26AQI
26AQI
15th November 2025
28AQI
28AQI
16th November 2025
18AQI
18AQI
17th November 2025
19AQI
19AQI
18th November 2025
29AQI
29AQI
19th November 2025
39AQI
39AQI
20th November 2025
24AQI
24AQI
21st November 2025
26AQI
26AQI
22nd November 2025
42AQI
42AQI
23rd November 2025
30AQI
30AQI
24th November 2025
25th November 2025
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
26AQI
28AQI
26AQI
21AQI
21AQI
38AQI
50AQI
50AQI
31AQI
32AQI
23AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202532AQI
31
28
30
1
30
31
24
6
18
12
1
17
11
2
1
28
2
26
5
23
286
37
3
1
Highest AQI recorded in
August50AQI
Lowest AQI recorded in
April21AQI
202430AQI
31
28
1
31
30
30
1
29
27
4
26
5
23
1
2
4
31
30
31
347
12
2
4
Highest AQI recorded in
September57AQI
Lowest AQI recorded in
November18AQI
202329AQI
31
28
31
30
31
28
2
28
3
23
8
28
2
31
29
29
2
347
17
Highest AQI recorded in
August38AQI
Lowest AQI recorded in
October20AQI
202227AQI
31
21
31
30
31
30
22
2
2
29
31
29
1
30
1
317
4
Highest AQI recorded in
February30AQI
Lowest AQI recorded in
September21AQI
202131AQI
27
3
23
2
30
1
30
28
1
28
2
20
9
2
25
4
2
30
30
30
31
332
22
4
Highest AQI recorded in
July47AQI
Lowest AQI recorded in
October20AQI
202027AQI
11
2
21
18
30
30
1
31
30
28
1
29
1
30
1
258
6
Highest AQI recorded in
March37AQI
Lowest AQI recorded in
August22AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2025(Avg.)
32AQILeast Polluted Year Recorded
2022(Avg.)
27AQIThunder Bay's annual 2025 AQI (32) shows an average percentage change of 10.5% (worsened AQI) compared to previous years: 2020 (27), 2021 (31), 2022 (27), 2023 (29), 2024 (30).
