Chillan, Biobio, Chile 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
Chillan, Biobio, Chile
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
25th Nov 2023
51AQILowest AQI recorded on
17th Nov 2023
12AQISame Day Analysis (7th November ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 50 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 6th Nov - 7th Nov 2025
Chillan, Biobio, Chile
AQI
Day
Night
.
6 AM6th Nov 2025
8 PM
5 AM7th Nov 2025
Day time
Avg. Highest Time
1PM6th Nov
56AQI
Avg. Lowest Time
9AM6th Nov
22AQI
Night time
Avg. Highest Time
1AM7th Nov
62AQI
Avg. Lowest Time
9PM6th Nov
47AQI
In the last 24 hours,
Chillan's AQI reached its highest point of 62 at 1 AM during the Night, while the lowest point, 22, was recorded at 9 AM during the Day between 6th Nov and 7th Nov 2025.
Day & Night AQI Trend : Oct - Nov 2025
Chillan, Biobio, Chile
OctNov
08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th
Day
Night
8th Oct 2025506 AMAQI
8th Oct 2025407 AMAQI
8th Oct 2025448 AMAQI
8th Oct 2025509 AMAQI
8th Oct 20256110 AMAQI
8th Oct 20256311 AMAQI
8th Oct 20256012 PMAQI
8th Oct 2025721 PMAQI
8th Oct 2025712 PMAQI
8th Oct 2025693 PMAQI
8th Oct 2025394 PMAQI
8th Oct 2025435 PMAQI
8th Oct 2025386 PMAQI
8th Oct 2025397 PMAQI
8th Oct 2025388 PMAQI
8th Oct 2025399 PMAQI
8th Oct 20253810 PMAQI
8th Oct 20254611 PMAQI
9th Oct 20254712 AMAQI
9th Oct 2025491 AMAQI
9th Oct 2025432 AMAQI
9th Oct 2025433 AMAQI
9th Oct 2025464 AMAQI
9th Oct 2025565 AMAQI
--°C/°C
9th Oct 2025566 AMAQI
9th Oct 2025577 AMAQI
9th Oct 2025568 AMAQI
9th Oct 2025549 AMAQI
9th Oct 20254810 AMAQI
9th Oct 20254611 AMAQI
9th Oct 20254812 PMAQI
9th Oct 2025491 PMAQI
9th Oct 2025532 PMAQI
9th Oct 2025533 PMAQI
9th Oct 2025484 PMAQI
9th Oct 2025465 PMAQI
9th Oct 2025526 PMAQI
9th Oct 2025517 PMAQI
9th Oct 2025518 PMAQI
9th Oct 2025539 PMAQI
9th Oct 20255010 PMAQI
9th Oct 20256611 PMAQI
10th Oct 20257312 AMAQI
10th Oct 2025731 AMAQI
10th Oct 2025702 AMAQI
10th Oct 2025653 AMAQI
10th Oct 2025584 AMAQI
10th Oct 2025585 AMAQI
14°C7/21°C
10th Oct 2025596 AMAQI
10th Oct 2025577 AMAQI
10th Oct 2025648 AMAQI
10th Oct 2025719 AMAQI
10th Oct 20257610 AMAQI
10th Oct 20258211 AMAQI
10th Oct 20257612 PMAQI
10th Oct 2025571 PMAQI
10th Oct 2025462 PMAQI
10th Oct 2025493 PMAQI
10th Oct 2025514 PMAQI
10th Oct 2025485 PMAQI
10th Oct 2025496 PMAQI
10th Oct 2025457 PMAQI
10th Oct 2025208 PMAQI
10th Oct 2025179 PMAQI
10th Oct 20252310 PMAQI
10th Oct 20253511 PMAQI
11th Oct 20253612 AMAQI
11th Oct 2025401 AMAQI
11th Oct 2025552 AMAQI
11th Oct 2025363 AMAQI
11th Oct 2025364 AMAQI
11th Oct 2025345 AMAQI
13°C7/20°C
11th Oct 2025406 AMAQI
11th Oct 2025387 AMAQI
11th Oct 2025338 AMAQI
11th Oct 2025639 AMAQI
11th Oct 20256010 AMAQI
11th Oct 20255811 AMAQI
11th Oct 20255612 PMAQI
11th Oct 2025531 PMAQI
11th Oct 2025372 PMAQI
11th Oct 2025203 PMAQI
11th Oct 2025204 PMAQI
11th Oct 2025205 PMAQI
11th Oct 2025176 PMAQI
11th Oct 2025177 PMAQI
11th Oct 2025198 PMAQI
11th Oct 2025409 PMAQI
11th Oct 20253410 PMAQI
11th Oct 20254311 PMAQI
12th Oct 20254312 AMAQI
12th Oct 2025481 AMAQI
12th Oct 2025462 AMAQI
12th Oct 2025463 AMAQI
12th Oct 2025454 AMAQI
12th Oct 2025265 AMAQI
10°C5/15°C
12th Oct 2025236 AMAQI
12th Oct 2025147 AMAQI
12th Oct 2025218 AMAQI
12th Oct 2025279 AMAQI
12th Oct 20252510 AMAQI
12th Oct 20253011 AMAQI
12th Oct 20252912 PMAQI
12th Oct 2025281 PMAQI
12th Oct 2025472 PMAQI
12th Oct 2025463 PMAQI
12th Oct 2025384 PMAQI
12th Oct 2025225 PMAQI
12th Oct 2025196 PMAQI
12th Oct 2025247 PMAQI
12th Oct 2025408 PMAQI
12th Oct 2025409 PMAQI
12th Oct 20255210 PMAQI
12th Oct 20255211 PMAQI
13th Oct 20256012 AMAQI
13th Oct 2025541 AMAQI
13th Oct 2025512 AMAQI
13th Oct 2025483 AMAQI
13th Oct 2025464 AMAQI
13th Oct 2025465 AMAQI
11°C4/19°C
13th Oct 2025356 AMAQI
13th Oct 2025187 AMAQI
13th Oct 2025278 AMAQI
13th Oct 20251029 AMAQI
13th Oct 20257410 AMAQI
13th Oct 20255111 AMAQI
13th Oct 20254912 PMAQI
13th Oct 2025581 PMAQI
13th Oct 2025592 PMAQI
13th Oct 2025593 PMAQI
13th Oct 2025344 PMAQI
13th Oct 2025365 PMAQI
13th Oct 2025396 PMAQI
13th Oct 2025297 PMAQI
13th Oct 2025348 PMAQI
13th Oct 2025329 PMAQI
13th Oct 20252410 PMAQI
13th Oct 20253411 PMAQI
14th Oct 20254112 AMAQI
14th Oct 2025531 AMAQI
14th Oct 2025522 AMAQI
14th Oct 2025433 AMAQI
14th Oct 2025484 AMAQI
14th Oct 2025525 AMAQI
12°C4/22°C
14th Oct 2025556 AMAQI
14th Oct 2025447 AMAQI
14th Oct 2025438 AMAQI
14th Oct 2025479 AMAQI
14th Oct 20255110 AMAQI
14th Oct 20255011 AMAQI
14th Oct 20254612 PMAQI
14th Oct 2025461 PMAQI
14th Oct 2025602 PMAQI
14th Oct 2025673 PMAQI
14th Oct 2025694 PMAQI
14th Oct 2025665 PMAQI
14th Oct 2025746 PMAQI
14th Oct 2025767 PMAQI
14th Oct 2025628 PMAQI
14th Oct 2025469 PMAQI
14th Oct 20254310 PMAQI
14th Oct 20254311 PMAQI
15th Oct 20253712 AMAQI
15th Oct 2025411 AMAQI
15th Oct 2025372 AMAQI
15th Oct 2025303 AMAQI
15th Oct 2025394 AMAQI
15th Oct 2025325 AMAQI
14°C7/22°C
15th Oct 2025246 AMAQI
15th Oct 2025307 AMAQI
15th Oct 2025398 AMAQI
15th Oct 2025279 AMAQI
15th Oct 20254010 AMAQI
15th Oct 20253811 AMAQI
15th Oct 20254912 PMAQI
15th Oct 2025571 PMAQI
15th Oct 2025552 PMAQI
15th Oct 2025543 PMAQI
15th Oct 2025534 PMAQI
15th Oct 2025495 PMAQI
15th Oct 2025336 PMAQI
15th Oct 2025247 PMAQI
15th Oct 2025278 PMAQI
15th Oct 2025579 PMAQI
15th Oct 20256410 PMAQI
15th Oct 20255011 PMAQI
16th Oct 20255012 AMAQI
16th Oct 2025481 AMAQI
16th Oct 2025432 AMAQI
16th Oct 2025423 AMAQI
16th Oct 2025444 AMAQI
16th Oct 2025455 AMAQI
13°C8/18°C
16th Oct 2025376 AMAQI
16th Oct 2025237 AMAQI
16th Oct 2025158 AMAQI
16th Oct 2025179 AMAQI
16th Oct 20251810 AMAQI
16th Oct 20253311 AMAQI
16th Oct 20254112 PMAQI
16th Oct 2025551 PMAQI
16th Oct 2025632 PMAQI
16th Oct 2025393 PMAQI
16th Oct 2025354 PMAQI
16th Oct 2025375 PMAQI
16th Oct 2025456 PMAQI
16th Oct 2025487 PMAQI
16th Oct 2025568 PMAQI
16th Oct 2025549 PMAQI
16th Oct 20255810 PMAQI
16th Oct 20255711 PMAQI
17th Oct 20255412 AMAQI
17th Oct 2025531 AMAQI
17th Oct 2025572 AMAQI
17th Oct 2025613 AMAQI
17th Oct 2025604 AMAQI
17th Oct 2025575 AMAQI
12°C5/20°C
17th Oct 2025446 AMAQI
17th Oct 2025317 AMAQI
17th Oct 2025318 AMAQI
17th Oct 2025249 AMAQI
17th Oct 20253810 AMAQI
17th Oct 20254911 AMAQI
17th Oct 20254912 PMAQI
17th Oct 2025511 PMAQI
17th Oct 2025512 PMAQI
17th Oct 2025523 PMAQI
17th Oct 2025474 PMAQI
17th Oct 2025405 PMAQI
17th Oct 2025496 PMAQI
17th Oct 2025457 PMAQI
17th Oct 2025458 PMAQI
17th Oct 2025439 PMAQI
17th Oct 20254010 PMAQI
17th Oct 20254811 PMAQI
18th Oct 20255312 AMAQI
18th Oct 2025501 AMAQI
18th Oct 2025522 AMAQI
18th Oct 2025503 AMAQI
18th Oct 2025534 AMAQI
18th Oct 2025495 AMAQI
13°C5/23°C
18th Oct 2025486 AMAQI
18th Oct 2025447 AMAQI
18th Oct 2025468 AMAQI
18th Oct 2025489 AMAQI
18th Oct 20254710 AMAQI
18th Oct 20255111 AMAQI
18th Oct 20254912 PMAQI
18th Oct 2025451 PMAQI
18th Oct 2025452 PMAQI
18th Oct 2025443 PMAQI
18th Oct 2025464 PMAQI
18th Oct 2025475 PMAQI
18th Oct 2025476 PMAQI
18th Oct 2025497 PMAQI
18th Oct 2025498 PMAQI
18th Oct 2025489 PMAQI
18th Oct 20255310 PMAQI
18th Oct 20255611 PMAQI
19th Oct 20256412 AMAQI
19th Oct 2025671 AMAQI
19th Oct 2025632 AMAQI
19th Oct 2025573 AMAQI
19th Oct 2025564 AMAQI
19th Oct 2025565 AMAQI
15°C7/24°C
19th Oct 2025536 AMAQI
19th Oct 2025477 AMAQI
19th Oct 2025408 AMAQI
19th Oct 2025409 AMAQI
19th Oct 20254810 AMAQI
19th Oct 20255211 AMAQI
19th Oct 20255512 PMAQI
19th Oct 2025561 PMAQI
19th Oct 2025562 PMAQI
19th Oct 2025593 PMAQI
19th Oct 2025654 PMAQI
19th Oct 2025615 PMAQI
19th Oct 2025566 PMAQI
19th Oct 2025557 PMAQI
19th Oct 2025408 PMAQI
19th Oct 2025199 PMAQI
19th Oct 20252310 PMAQI
19th Oct 20252011 PMAQI
20th Oct 20251712 AMAQI
20th Oct 2025201 AMAQI
20th Oct 2025182 AMAQI
20th Oct 2025363 AMAQI
20th Oct 2025464 AMAQI
20th Oct 2025365 AMAQI
15°C8/24°C
20th Oct 2025346 AMAQI
20th Oct 2025267 AMAQI
20th Oct 2025428 AMAQI
20th Oct 2025669 AMAQI
20th Oct 20258410 AMAQI
20th Oct 20259011 AMAQI
20th Oct 20255812 PMAQI
20th Oct 2025461 PMAQI
20th Oct 2025462 PMAQI
20th Oct 2025413 PMAQI
20th Oct 2025334 PMAQI
20th Oct 2025295 PMAQI
20th Oct 2025306 PMAQI
20th Oct 2025357 PMAQI
20th Oct 2025278 PMAQI
20th Oct 2025219 PMAQI
20th Oct 20252810 PMAQI
20th Oct 20254311 PMAQI
21st Oct 20253112 AMAQI
21st Oct 2025561 AMAQI
21st Oct 2025622 AMAQI
21st Oct 2025653 AMAQI
21st Oct 2025694 AMAQI
21st Oct 2025355 AMAQI
13°C5/23°C
21st Oct 2025186 AMAQI
21st Oct 2025227 AMAQI
21st Oct 2025278 AMAQI
21st Oct 2025379 AMAQI
21st Oct 20255910 AMAQI
21st Oct 20253811 AMAQI
21st Oct 20253712 PMAQI
21st Oct 2025331 PMAQI
21st Oct 2025302 PMAQI
21st Oct 2025233 PMAQI
21st Oct 2025254 PMAQI
21st Oct 2025235 PMAQI
21st Oct 2025216 PMAQI
21st Oct 2025167 PMAQI
21st Oct 2025168 PMAQI
21st Oct 2025149 PMAQI
21st Oct 20252210 PMAQI
21st Oct 20252511 PMAQI
22nd Oct 20253512 AMAQI
22nd Oct 2025381 AMAQI
22nd Oct 2025362 AMAQI
22nd Oct 2025393 AMAQI
22nd Oct 2025394 AMAQI
22nd Oct 2025305 AMAQI
14°C8/21°C
22nd Oct 2025496 AMAQI
22nd Oct 2025267 AMAQI
22nd Oct 2025228 AMAQI
22nd Oct 2025329 AMAQI
22nd Oct 20254810 AMAQI
22nd Oct 20255211 AMAQI
22nd Oct 20254612 PMAQI
22nd Oct 2025421 PMAQI
22nd Oct 2025382 PMAQI
22nd Oct 2025263 PMAQI
22nd Oct 2025254 PMAQI
22nd Oct 2025285 PMAQI
22nd Oct 2025316 PMAQI
22nd Oct 2025377 PMAQI
22nd Oct 2025438 PMAQI
22nd Oct 2025309 PMAQI
22nd Oct 20252710 PMAQI
22nd Oct 20253011 PMAQI
23rd Oct 20253012 AMAQI
23rd Oct 2025411 AMAQI
23rd Oct 2025422 AMAQI
23rd Oct 2025413 AMAQI
23rd Oct 2025274 AMAQI
23rd Oct 2025195 AMAQI
13°C5/22°C
23rd Oct 2025286 AMAQI
23rd Oct 2025247 AMAQI
23rd Oct 2025248 AMAQI
23rd Oct 2025249 AMAQI
23rd Oct 20252710 AMAQI
23rd Oct 20252511 AMAQI
23rd Oct 20252512 PMAQI
23rd Oct 2025271 PMAQI
23rd Oct 2025382 PMAQI
23rd Oct 2025303 PMAQI
23rd Oct 2025354 PMAQI
23rd Oct 2025375 PMAQI
23rd Oct 2025336 PMAQI
23rd Oct 2025297 PMAQI
23rd Oct 2025288 PMAQI
23rd Oct 2025369 PMAQI
23rd Oct 20253110 PMAQI
23rd Oct 20253411 PMAQI
24th Oct 20253112 AMAQI
24th Oct 2025231 AMAQI
24th Oct 2025182 AMAQI
24th Oct 2025173 AMAQI
24th Oct 2025214 AMAQI
24th Oct 2025135 AMAQI
13°C7/21°C
24th Oct 2025116 AMAQI
24th Oct 2025217 AMAQI
24th Oct 2025128 AMAQI
24th Oct 2025169 AMAQI
24th Oct 20252910 AMAQI
24th Oct 20253611 AMAQI
24th Oct 20253512 PMAQI
24th Oct 2025341 PMAQI
24th Oct 2025312 PMAQI
24th Oct 2025293 PMAQI
24th Oct 2025284 PMAQI
24th Oct 2025325 PMAQI
24th Oct 2025306 PMAQI
24th Oct 2025287 PMAQI
24th Oct 2025348 PMAQI
24th Oct 2025319 PMAQI
24th Oct 20253110 PMAQI
24th Oct 20253011 PMAQI
25th Oct 20252812 AMAQI
25th Oct 2025311 AMAQI
25th Oct 2025302 AMAQI
25th Oct 2025203 AMAQI
25th Oct 2025164 AMAQI
25th Oct 2025185 AMAQI
11°C5/18°C
25th Oct 2025166 AMAQI
25th Oct 2025147 AMAQI
25th Oct 2025128 AMAQI
25th Oct 2025119 AMAQI
25th Oct 20251910 AMAQI
25th Oct 20252511 AMAQI
25th Oct 20251912 PMAQI
25th Oct 2025161 PMAQI
25th Oct 2025142 PMAQI
25th Oct 2025163 PMAQI
25th Oct 2025154 PMAQI
25th Oct 2025135 PMAQI
25th Oct 2025116 PMAQI
25th Oct 2025117 PMAQI
25th Oct 2025388 PMAQI
25th Oct 2025429 PMAQI
25th Oct 20252310 PMAQI
25th Oct 20252811 PMAQI
26th Oct 20253012 AMAQI
26th Oct 2025231 AMAQI
26th Oct 2025202 AMAQI
26th Oct 2025233 AMAQI
26th Oct 2025194 AMAQI
26th Oct 2025185 AMAQI
11°C2/19°C
26th Oct 2025176 AMAQI
26th Oct 2025177 AMAQI
26th Oct 2025198 AMAQI
26th Oct 2025179 AMAQI
26th Oct 20251810 AMAQI
26th Oct 20252411 AMAQI
26th Oct 20253212 PMAQI
26th Oct 2025201 PMAQI
26th Oct 2025172 PMAQI
26th Oct 2025203 PMAQI
26th Oct 2025224 PMAQI
26th Oct 2025175 PMAQI
26th Oct 2025166 PMAQI
26th Oct 2025127 PMAQI
26th Oct 2025148 PMAQI
26th Oct 2025139 PMAQI
26th Oct 20251610 PMAQI
26th Oct 20253111 PMAQI
27th Oct 20252812 AMAQI
27th Oct 2025281 AMAQI
27th Oct 2025202 AMAQI
27th Oct 2025193 AMAQI
27th Oct 2025194 AMAQI
27th Oct 2025265 AMAQI
14°C7/22°C
27th Oct 2025286 AMAQI
27th Oct 2025237 AMAQI
27th Oct 2025228 AMAQI
27th Oct 2025189 AMAQI
27th Oct 20251310 AMAQI
27th Oct 20252311 AMAQI
27th Oct 20252712 PMAQI
27th Oct 2025371 PMAQI
27th Oct 2025382 PMAQI
27th Oct 2025323 PMAQI
27th Oct 2025304 PMAQI
27th Oct 2025295 PMAQI
27th Oct 2025456 PMAQI
27th Oct 2025527 PMAQI
27th Oct 2025258 PMAQI
27th Oct 2025229 PMAQI
27th Oct 20254210 PMAQI
27th Oct 20255211 PMAQI
28th Oct 20256112 AMAQI
28th Oct 2025421 AMAQI
28th Oct 2025382 AMAQI
28th Oct 2025393 AMAQI
28th Oct 2025304 AMAQI
28th Oct 2025295 AMAQI
16°C7/25°C
28th Oct 2025316 AMAQI
28th Oct 2025327 AMAQI
28th Oct 2025328 AMAQI
28th Oct 2025299 AMAQI
28th Oct 20253810 AMAQI
28th Oct 20254311 AMAQI
28th Oct 20255212 PMAQI
28th Oct 2025561 PMAQI
28th Oct 2025502 PMAQI
28th Oct 2025423 PMAQI
28th Oct 2025304 PMAQI
28th Oct 2025305 PMAQI
28th Oct 2025336 PMAQI
28th Oct 2025257 PMAQI
28th Oct 2025268 PMAQI
28th Oct 2025339 PMAQI
28th Oct 20253210 PMAQI
28th Oct 20252911 PMAQI
29th Oct 20254512 AMAQI
29th Oct 2025481 AMAQI
29th Oct 2025572 AMAQI
29th Oct 2025563 AMAQI
29th Oct 2025554 AMAQI
29th Oct 2025335 AMAQI
15°C7/25°C
29th Oct 2025266 AMAQI
29th Oct 2025187 AMAQI
29th Oct 2025288 AMAQI
29th Oct 2025309 AMAQI
29th Oct 20253610 AMAQI
29th Oct 20254211 AMAQI
29th Oct 20254512 PMAQI
29th Oct 2025351 PMAQI
29th Oct 2025332 PMAQI
29th Oct 2025303 PMAQI
29th Oct 2025254 PMAQI
29th Oct 2025255 PMAQI
29th Oct 2025296 PMAQI
29th Oct 2025317 PMAQI
29th Oct 2025348 PMAQI
29th Oct 2025279 PMAQI
29th Oct 20252610 PMAQI
29th Oct 20253611 PMAQI
30th Oct 20253812 AMAQI
30th Oct 2025531 AMAQI
30th Oct 2025562 AMAQI
30th Oct 2025413 AMAQI
30th Oct 2025284 AMAQI
30th Oct 2025255 AMAQI
15°C8/25°C
30th Oct 2025226 AMAQI
30th Oct 2025217 AMAQI
30th Oct 2025308 AMAQI
30th Oct 2025289 AMAQI
30th Oct 20253610 AMAQI
30th Oct 20253911 AMAQI
30th Oct 20253112 PMAQI
30th Oct 2025271 PMAQI
30th Oct 2025282 PMAQI
30th Oct 2025353 PMAQI
30th Oct 2025334 PMAQI
30th Oct 2025325 PMAQI
30th Oct 2025326 PMAQI
30th Oct 2025327 PMAQI
30th Oct 2025258 PMAQI
30th Oct 2025419 PMAQI
30th Oct 20252910 PMAQI
30th Oct 20253511 PMAQI
31st Oct 20254812 AMAQI
31st Oct 2025341 AMAQI
31st Oct 2025292 AMAQI
31st Oct 2025303 AMAQI
31st Oct 2025284 AMAQI
31st Oct 2025225 AMAQI
15°C7/25°C
31st Oct 2025196 AMAQI
31st Oct 2025197 AMAQI
31st Oct 2025188 AMAQI
31st Oct 2025179 AMAQI
31st Oct 20252110 AMAQI
31st Oct 20251811 AMAQI
31st Oct 20252112 PMAQI
31st Oct 2025221 PMAQI
31st Oct 2025192 PMAQI
31st Oct 2025213 PMAQI
31st Oct 2025184 PMAQI
31st Oct 2025175 PMAQI
31st Oct 2025186 PMAQI
31st Oct 2025157 PMAQI
31st Oct 2025128 PMAQI
31st Oct 2025129 PMAQI
31st Oct 20251610 PMAQI
31st Oct 20253011 PMAQI
1st Nov 20253712 AMAQI
1st Nov 2025281 AMAQI
1st Nov 2025262 AMAQI
1st Nov 2025213 AMAQI
1st Nov 2025204 AMAQI
1st Nov 2025235 AMAQI
13°C7/22°C
1st Nov 2025196 AMAQI
1st Nov 2025237 AMAQI
1st Nov 2025218 AMAQI
1st Nov 2025159 AMAQI
1st Nov 20251210 AMAQI
1st Nov 20251611 AMAQI
1st Nov 20251712 PMAQI
1st Nov 2025171 PMAQI
1st Nov 2025282 PMAQI
1st Nov 2025283 PMAQI
1st Nov 2025194 PMAQI
1st Nov 2025125 PMAQI
1st Nov 2025196 PMAQI
1st Nov 2025227 PMAQI
1st Nov 2025228 PMAQI
1st Nov 2025269 PMAQI
1st Nov 20252010 PMAQI
1st Nov 20253011 PMAQI
2nd Nov 20253412 AMAQI
2nd Nov 2025321 AMAQI
2nd Nov 2025302 AMAQI
2nd Nov 2025243 AMAQI
2nd Nov 2025214 AMAQI
2nd Nov 2025225 AMAQI
14°C5/24°C
2nd Nov 2025216 AMAQI
2nd Nov 2025277 AMAQI
2nd Nov 2025278 AMAQI
2nd Nov 2025349 AMAQI
2nd Nov 20252510 AMAQI
2nd Nov 20252211 AMAQI
2nd Nov 20252212 PMAQI
2nd Nov 2025261 PMAQI
2nd Nov 2025322 PMAQI
2nd Nov 2025293 PMAQI
2nd Nov 2025214 PMAQI
2nd Nov 2025245 PMAQI
2nd Nov 2025356 PMAQI
2nd Nov 2025377 PMAQI
2nd Nov 2025308 PMAQI
2nd Nov 2025359 PMAQI
2nd Nov 20253810 PMAQI
2nd Nov 20253711 PMAQI
3rd Nov 20254212 AMAQI
3rd Nov 2025441 AMAQI
3rd Nov 2025452 AMAQI
3rd Nov 2025543 AMAQI
3rd Nov 2025574 AMAQI
3rd Nov 2025285 AMAQI
16°C6/27°C
3rd Nov 2025226 AMAQI
3rd Nov 2025227 AMAQI
3rd Nov 2025268 AMAQI
3rd Nov 2025279 AMAQI
3rd Nov 20253710 AMAQI
3rd Nov 20254811 AMAQI
3rd Nov 20255012 PMAQI
3rd Nov 2025481 PMAQI
3rd Nov 2025282 PMAQI
3rd Nov 2025233 PMAQI
3rd Nov 2025224 PMAQI
3rd Nov 2025195 PMAQI
3rd Nov 2025166 PMAQI
3rd Nov 2025157 PMAQI
3rd Nov 2025268 PMAQI
3rd Nov 2025329 PMAQI
3rd Nov 20253210 PMAQI
3rd Nov 20254411 PMAQI
4th Nov 20253012 AMAQI
4th Nov 2025331 AMAQI
4th Nov 2025352 AMAQI
4th Nov 2025323 AMAQI
4th Nov 2025264 AMAQI
4th Nov 2025245 AMAQI
15°C11/23°C
4th Nov 2025376 AMAQI
4th Nov 2025307 AMAQI
4th Nov 2025268 AMAQI
4th Nov 202589 AMAQI
4th Nov 20251310 AMAQI
4th Nov 20252611 AMAQI
4th Nov 20252812 PMAQI
4th Nov 2025331 PMAQI
4th Nov 2025342 PMAQI
4th Nov 2025383 PMAQI
4th Nov 2025384 PMAQI
4th Nov 2025425 PMAQI
4th Nov 2025346 PMAQI
4th Nov 2025297 PMAQI
4th Nov 2025368 PMAQI
4th Nov 2025419 PMAQI
4th Nov 20253310 PMAQI
4th Nov 20252911 PMAQI
5th Nov 20253012 AMAQI
5th Nov 2025351 AMAQI
5th Nov 2025362 AMAQI
5th Nov 2025343 AMAQI
5th Nov 2025344 AMAQI
5th Nov 2025445 AMAQI
15°C10/23°C
5th Nov 2025326 AMAQI
5th Nov 2025307 AMAQI
5th Nov 2025288 AMAQI
5th Nov 2025249 AMAQI
5th Nov 20253210 AMAQI
5th Nov 20253611 AMAQI
5th Nov 20253712 PMAQI
5th Nov 2025401 PMAQI
5th Nov 2025422 PMAQI
5th Nov 2025413 PMAQI
5th Nov 2025334 PMAQI
5th Nov 2025335 PMAQI
5th Nov 2025356 PMAQI
5th Nov 2025377 PMAQI
5th Nov 2025398 PMAQI
5th Nov 2025389 PMAQI
5th Nov 20254610 PMAQI
5th Nov 20255211 PMAQI
6th Nov 20255212 AMAQI
6th Nov 2025531 AMAQI
6th Nov 2025502 AMAQI
6th Nov 2025493 AMAQI
6th Nov 2025404 AMAQI
6th Nov 2025345 AMAQI
15°C7/26°C
6th Nov 2025296 AMAQI
6th Nov 2025317 AMAQI
6th Nov 2025248 AMAQI
6th Nov 2025229 AMAQI
6th Nov 20254710 AMAQI
6th Nov 20255411 AMAQI
6th Nov 20255512 PMAQI
6th Nov 2025561 PMAQI
6th Nov 2025512 PMAQI
6th Nov 2025533 PMAQI
6th Nov 2025534 PMAQI
6th Nov 2025505 PMAQI
6th Nov 2025436 PMAQI
6th Nov 2025437 PMAQI
6th Nov 2025478 PMAQI
6th Nov 2025479 PMAQI
6th Nov 20254910 PMAQI
6th Nov 20255111 PMAQI
7th Nov 20256112 AMAQI
7th Nov 2025621 AMAQI
7th Nov 2025622 AMAQI
7th Nov 2025523 AMAQI
7th Nov 2025504 AMAQI
7th Nov 2025495 AMAQI
14°C7/23°C
7th Nov 2025496 AMAQI
6 AM7th Nov 2025507 AMAQI
7th Nov 2025348 AMAQI
7th Nov 2025359 AMAQI
7th Nov 20253610 AMAQI
7th Nov 20254011 AMAQI
7th Nov 20254212 PMAQI
7th Nov 2025391 PMAQI
1 PM7th Nov 2025382 PMAQI
7th Nov 2025333 PMAQI
7th Nov 2025374 PMAQI
7th Nov 2025325 PMAQI
7th Nov 2025256 PMAQI
7th Nov 2025267 PMAQI
7th Nov 2025258 PMAQI
8 PM7th Nov 2025259 PMAQI
1 AM
5 AM
15°C7/23°C
Day time
Avg. Highest Time
11 AM - 2 PM
41AQI
4 hours / Day
120 hours / Month
Avg. Lowest Time
7 AM - 8 AM
30AQI
2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 11 AM to 2 PM (Avg. 41), while the lowest AQI was between 7 AM to 8 AM (Avg. 30).
Night time
Avg. Highest Time
12 AM - 2 AM
43AQI
3 hours / Day
90 hours / Month
Avg. Lowest Time
5 AM - 10 PM
35AQI
3 hours / Day
90 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 2 AM (Avg. 43), while the lowest AQI was between 5 AM to 10 PM (Avg. 35).
2025 Days Vs Air Quality
Chillan, Biobio, Chile
2025
50%
154
37%
115
11%
35
2%
7
Total number of days with different AQI categories in last 312 days in 2025 (53 days remaining)
Good
154 DaysModerate
115 DaysPoor
35 DaysUnhealthy
7 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 50%
Health Risk Level:
Considerable
In 2025, 50% of 312 days were within WHO’s safe air quality limits, and 50% exceeded them. The risk of health issues is Considerable, with potential for conditions in sensitive individuals.
Annual Air Quality Insights
Chillan, Biobio, Chile
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
30AQI
30AQI
2nd January 2025
30AQI
30AQI
3rd January 2025
37AQI
37AQI
4th January 2025
36AQI
36AQI
5th January 2025
31AQI
31AQI
6th January 2025
42AQI
42AQI
7th January 2025
32AQI
32AQI
8th January 2025
31AQI
31AQI
9th January 2025
25AQI
25AQI
10th January 2025
34AQI
34AQI
11th January 2025
31AQI
31AQI
12th January 2025
57AQI
57AQI
13th January 2025
34AQI
34AQI
14th January 2025
31AQI
31AQI
15th January 2025
21AQI
21AQI
16th January 2025
23AQI
23AQI
17th January 2025
25AQI
25AQI
18th January 2025
26AQI
26AQI
19th January 2025
27AQI
27AQI
20th January 2025
32AQI
32AQI
21st January 2025
25AQI
25AQI
22nd January 2025
28AQI
28AQI
23rd January 2025
24AQI
24AQI
24th January 2025
28AQI
28AQI
25th January 2025
28AQI
28AQI
26th January 2025
31AQI
31AQI
27th January 2025
25AQI
25AQI
28th January 2025
33AQI
33AQI
29th January 2025
44AQI
44AQI
30th January 2025
45AQI
45AQI
31st January 2025
30AQI
30AQI
1st February 2025
27AQI
27AQI
2nd February 2025
24AQI
24AQI
3rd February 2025
27AQI
27AQI
4th February 2025
37AQI
37AQI
5th February 2025
25AQI
25AQI
6th February 2025
34AQI
34AQI
7th February 2025
63AQI
63AQI
8th February 2025
59AQI
59AQI
9th February 2025
56AQI
56AQI
10th February 2025
65AQI
65AQI
11th February 2025
68AQI
68AQI
12th February 2025
51AQI
51AQI
13th February 2025
48AQI
48AQI
14th February 2025
31AQI
31AQI
15th February 2025
31AQI
31AQI
16th February 2025
32AQI
32AQI
17th February 2025
30AQI
30AQI
18th February 2025
42AQI
42AQI
19th February 2025
46AQI
46AQI
20th February 2025
42AQI
42AQI
21st February 2025
47AQI
47AQI
22nd February 2025
28AQI
28AQI
23rd February 2025
30AQI
30AQI
24th February 2025
22AQI
22AQI
25th February 2025
41AQI
41AQI
26th February 2025
90AQI
90AQI
27th February 2025
46AQI
46AQI
28th February 2025
24AQI
24AQI
1st March 2025
21AQI
21AQI
2nd March 2025
20AQI
20AQI
3rd March 2025
22AQI
22AQI
4th March 2025
29AQI
29AQI
5th March 2025
28AQI
28AQI
6th March 2025
25AQI
25AQI
7th March 2025
22AQI
22AQI
8th March 2025
22AQI
22AQI
9th March 2025
23AQI
23AQI
10th March 2025
23AQI
23AQI
11th March 2025
39AQI
39AQI
12th March 2025
53AQI
53AQI
13th March 2025
36AQI
36AQI
14th March 2025
33AQI
33AQI
15th March 2025
35AQI
35AQI
16th March 2025
41AQI
41AQI
17th March 2025
34AQI
34AQI
18th March 2025
27AQI
27AQI
19th March 2025
38AQI
38AQI
20th March 2025
31AQI
31AQI
21st March 2025
25AQI
25AQI
22nd March 2025
49AQI
49AQI
23rd March 2025
65AQI
65AQI
24th March 2025
45AQI
45AQI
25th March 2025
53AQI
53AQI
26th March 2025
60AQI
60AQI
27th March 2025
54AQI
54AQI
28th March 2025
45AQI
45AQI
29th March 2025
41AQI
41AQI
30th March 2025
22AQI
22AQI
31st March 2025
26AQI
26AQI
1st April 2025
31AQI
31AQI
2nd April 2025
47AQI
47AQI
3rd April 2025
46AQI
46AQI
4th April 2025
53AQI
53AQI
5th April 2025
50AQI
50AQI
6th April 2025
42AQI
42AQI
7th April 2025
58AQI
58AQI
8th April 2025
107AQI
107AQI
9th April 2025
59AQI
59AQI
10th April 2025
40AQI
40AQI
11th April 2025
41AQI
41AQI
12th April 2025
39AQI
39AQI
13th April 2025
53AQI
53AQI
14th April 2025
60AQI
60AQI
15th April 2025
74AQI
74AQI
16th April 2025
68AQI
68AQI
17th April 2025
50AQI
50AQI
18th April 2025
42AQI
42AQI
19th April 2025
64AQI
64AQI
20th April 2025
82AQI
82AQI
21st April 2025
101AQI
101AQI
22nd April 2025
103AQI
103AQI
23rd April 2025
64AQI
64AQI
24th April 2025
44AQI
44AQI
25th April 2025
37AQI
37AQI
26th April 2025
70AQI
70AQI
27th April 2025
63AQI
63AQI
28th April 2025
54AQI
54AQI
29th April 2025
76AQI
76AQI
30th April 2025
89AQI
89AQI
1st May 2025
63AQI
63AQI
2nd May 2025
86AQI
86AQI
3rd May 2025
103AQI
103AQI
4th May 2025
54AQI
54AQI
5th May 2025
85AQI
85AQI
6th May 2025
101AQI
101AQI
7th May 2025
79AQI
79AQI
8th May 2025
62AQI
62AQI
9th May 2025
58AQI
58AQI
10th May 2025
66AQI
66AQI
11th May 2025
64AQI
64AQI
12th May 2025
92AQI
92AQI
13th May 2025
120AQI
120AQI
14th May 2025
107AQI
107AQI
15th May 2025
113AQI
113AQI
16th May 2025
104AQI
104AQI
17th May 2025
53AQI
53AQI
18th May 2025
87AQI
87AQI
19th May 2025
94AQI
94AQI
20th May 2025
80AQI
80AQI
21st May 2025
93AQI
93AQI
22nd May 2025
88AQI
88AQI
23rd May 2025
146AQI
146AQI
24th May 2025
96AQI
96AQI
25th May 2025
74AQI
74AQI
26th May 2025
47AQI
47AQI
27th May 2025
74AQI
74AQI
28th May 2025
64AQI
64AQI
29th May 2025
86AQI
86AQI
30th May 2025
72AQI
72AQI
31st May 2025
67AQI
67AQI
1st June 2025
93AQI
93AQI
2nd June 2025
149AQI
149AQI
3rd June 2025
151AQI
151AQI
4th June 2025
155AQI
155AQI
5th June 2025
105AQI
105AQI
6th June 2025
111AQI
111AQI
7th June 2025
100AQI
100AQI
8th June 2025
121AQI
121AQI
9th June 2025
135AQI
135AQI
10th June 2025
171AQI
171AQI
11th June 2025
133AQI
133AQI
12th June 2025
52AQI
52AQI
13th June 2025
65AQI
65AQI
14th June 2025
58AQI
58AQI
15th June 2025
38AQI
38AQI
16th June 2025
38AQI
38AQI
17th June 2025
69AQI
69AQI
18th June 2025
102AQI
102AQI
19th June 2025
95AQI
95AQI
20th June 2025
111AQI
111AQI
21st June 2025
81AQI
81AQI
22nd June 2025
80AQI
80AQI
23rd June 2025
86AQI
86AQI
24th June 2025
117AQI
117AQI
25th June 2025
96AQI
96AQI
26th June 2025
127AQI
127AQI
27th June 2025
143AQI
143AQI
28th June 2025
132AQI
132AQI
29th June 2025
150AQI
150AQI
30th June 2025
131AQI
131AQI
1st July 2025
156AQI
156AQI
2nd July 2025
161AQI
161AQI
3rd July 2025
165AQI
165AQI
4th July 2025
156AQI
156AQI
5th July 2025
141AQI
141AQI
6th July 2025
56AQI
56AQI
7th July 2025
56AQI
56AQI
8th July 2025
53AQI
53AQI
9th July 2025
60AQI
60AQI
10th July 2025
92AQI
92AQI
11th July 2025
104AQI
104AQI
12th July 2025
82AQI
82AQI
13th July 2025
63AQI
63AQI
14th July 2025
62AQI
62AQI
15th July 2025
61AQI
61AQI
16th July 2025
99AQI
99AQI
17th July 2025
76AQI
76AQI
18th July 2025
97AQI
97AQI
19th July 2025
100AQI
100AQI
20th July 2025
118AQI
118AQI
21st July 2025
107AQI
107AQI
22nd July 2025
68AQI
68AQI
23rd July 2025
107AQI
107AQI
24th July 2025
105AQI
105AQI
25th July 2025
44AQI
44AQI
26th July 2025
118AQI
118AQI
27th July 2025
83AQI
83AQI
28th July 2025
55AQI
55AQI
29th July 2025
109AQI
109AQI
30th July 2025
61AQI
61AQI
31st July 2025
43AQI
43AQI
1st August 2025
31AQI
31AQI
2nd August 2025
41AQI
41AQI
3rd August 2025
83AQI
83AQI
4th August 2025
74AQI
74AQI
5th August 2025
89AQI
89AQI
6th August 2025
85AQI
85AQI
7th August 2025
61AQI
61AQI
8th August 2025
103AQI
103AQI
9th August 2025
121AQI
121AQI
10th August 2025
88AQI
88AQI
11th August 2025
93AQI
93AQI
12th August 2025
69AQI
69AQI
13th August 2025
54AQI
54AQI
14th August 2025
87AQI
87AQI
15th August 2025
62AQI
62AQI
16th August 2025
47AQI
47AQI
17th August 2025
91AQI
91AQI
18th August 2025
66AQI
66AQI
19th August 2025
83AQI
83AQI
20th August 2025
51AQI
51AQI
21st August 2025
35AQI
35AQI
22nd August 2025
38AQI
38AQI
23rd August 2025
55AQI
55AQI
24th August 2025
82AQI
82AQI
25th August 2025
49AQI
49AQI
26th August 2025
39AQI
39AQI
27th August 2025
64AQI
64AQI
28th August 2025
60AQI
60AQI
29th August 2025
61AQI
61AQI
30th August 2025
87AQI
87AQI
31st August 2025
69AQI
69AQI
1st September 2025
62AQI
62AQI
2nd September 2025
39AQI
39AQI
3rd September 2025
48AQI
48AQI
4th September 2025
33AQI
33AQI
5th September 2025
84AQI
84AQI
6th September 2025
70AQI
70AQI
7th September 2025
50AQI
50AQI
8th September 2025
39AQI
39AQI
9th September 2025
27AQI
27AQI
10th September 2025
30AQI
30AQI
11th September 2025
47AQI
47AQI
12th September 2025
71AQI
71AQI
13th September 2025
40AQI
40AQI
14th September 2025
50AQI
50AQI
15th September 2025
62AQI
62AQI
16th September 2025
53AQI
53AQI
17th September 2025
56AQI
56AQI
18th September 2025
36AQI
36AQI
19th September 2025
41AQI
41AQI
20th September 2025
25AQI
25AQI
21st September 2025
20AQI
20AQI
22nd September 2025
65AQI
65AQI
23rd September 2025
49AQI
49AQI
24th September 2025
55AQI
55AQI
25th September 2025
40AQI
40AQI
26th September 2025
30AQI
30AQI
27th September 2025
44AQI
44AQI
28th September 2025
34AQI
34AQI
29th September 2025
37AQI
37AQI
30th September 2025
29AQI
29AQI
1st October 2025
33AQI
33AQI
2nd October 2025
47AQI
47AQI
3rd October 2025
54AQI
54AQI
4th October 2025
39AQI
39AQI
5th October 2025
53AQI
53AQI
6th October 2025
107AQI
107AQI
7th October 2025
38AQI
38AQI
8th October 2025
48AQI
48AQI
9th October 2025
51AQI
51AQI
10th October 2025
53AQI
53AQI
11th October 2025
37AQI
37AQI
12th October 2025
35AQI
35AQI
13th October 2025
45AQI
45AQI
14th October 2025
53AQI
53AQI
15th October 2025
41AQI
41AQI
16th October 2025
43AQI
43AQI
17th October 2025
47AQI
47AQI
18th October 2025
49AQI
49AQI
19th October 2025
50AQI
50AQI
20th October 2025
38AQI
38AQI
21st October 2025
34AQI
34AQI
22nd October 2025
34AQI
34AQI
23rd October 2025
31AQI
31AQI
24th October 2025
26AQI
26AQI
25th October 2025
21AQI
21AQI
26th October 2025
20AQI
20AQI
27th October 2025
30AQI
30AQI
28th October 2025
36AQI
36AQI
29th October 2025
35AQI
35AQI
30th October 2025
33AQI
33AQI
31st October 2025
22AQI
22AQI
1st November 2025
22AQI
22AQI
2nd November 2025
29AQI
29AQI
3rd November 2025
33AQI
33AQI
4th November 2025
31AQI
31AQI
5th November 2025
37AQI
37AQI
6th November 2025
45AQI
45AQI
7th November 2025
50AQI
50AQI
8th November 2025
9th November 2025
10th November 2025
11th November 2025
12th November 2025
13th November 2025
14th November 2025
15th November 2025
16th November 2025
17th November 2025
18th November 2025
19th November 2025
20th November 2025
21st November 2025
22nd November 2025
23rd November 2025
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
31AQI
42AQI
35AQI
60AQI
83AQI
107AQI
92AQI
68AQI
46AQI
41AQI
35AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202560AQI
30
1
21
7
26
5
12
15
3
1
23
7
2
11
14
3
2
17
8
4
7
22
2
21
9
25
5
1
7
154
115
35
7
Highest AQI recorded in
June107AQI
Lowest AQI recorded in
January31AQI
202459AQI
26
5
23
3
23
4
11
17
2
1
11
10
9
12
10
7
1
3
13
10
4
1
7
17
7
18
10
2
28
3
30
31
213
93
38
14
1
Highest AQI recorded in
May118AQI
Lowest AQI recorded in
November27AQI
202361AQI
31
11
6
5
3
3
23
8
12
12
5
1
6
16
7
2
8
12
3
7
5
14
9
3
11
11
8
1
18
12
19
4
26
1
31
201
96
37
17
3
Highest AQI recorded in
July94AQI
Lowest AQI recorded in
January27AQI
202256AQI
31
10
9
1
1
24
7
13
14
3
2
16
9
4
4
14
10
2
4
12
5
2
3
13
13
3
27
4
30
31
189
92
31
9
Highest AQI recorded in
May100AQI
Lowest AQI recorded in
December26AQI
202169AQI
29
1
27
1
18
12
1
10
17
3
1
8
10
12
13
7
8
2
11
11
9
2
14
8
7
8
21
1
26
5
30
25
6
176
109
41
36
2
Highest AQI recorded in
May125AQI
Lowest AQI recorded in
January32AQI
202061AQI
12
1
8
12
1
10
7
1
4
12
9
5
4
11
11
4
1
9
15
7
15
14
1
28
3
30
30
1
140
79
36
10
1
Highest AQI recorded in
July106AQI
Lowest AQI recorded in
December27AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2021(Avg.)
69AQILeast Polluted Year Recorded
2022(Avg.)
56AQIChillan's annual 2025 AQI (60) shows an average percentage change of -1.2% (improved AQI) compared to previous years: 2020 (61), 2021 (69), 2022 (56), 2023 (61), 2024 (59).
