Hilsea, Portsmouth, United Kingdom 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+
October Air Quality Analysis
Hilsea, Portsmouth, United Kingdom
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
12th Oct 2025
68AQILowest AQI recorded on
23rd Oct 2025
14AQISame Day Analysis (25th October ):
On this day, AQI across the 4 years varied significantly: 2025 ranks 4th highest AQI at 22 of Good air quality, showing improvement over 2024, 2023 and 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 25th Oct - 26th Oct 2025
Hilsea, Portsmouth, United Kingdom
AQI
Day
Night
.
7 AM25th Oct 2025
6 PM
6 AM26th Oct 2025
Day time
Avg. Highest Time
7AM25th Oct
11AQI
Avg. Lowest Time
5PM25th Oct
11AQI
Night time
Avg. Highest Time
10PM25th Oct
17AQI
Avg. Lowest Time
6AM26th Oct
11AQI
In the last 24 hours,
Hilsea's AQI reached its highest point of 17 at 10 PM during the Night, while the lowest point, 11, was recorded at 6 AM during the Night between 25th Oct and 26th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Hilsea, Portsmouth, United Kingdom
SepOct
26th - 27th27th - 28th28th - 29th29th - 30th30th - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th
Day
Night
26th Sep 2025177 AMAQI
26th Sep 2025188 AMAQI
26th Sep 2025179 AMAQI
26th Sep 20251710 AMAQI
26th Sep 20251911 AMAQI
26th Sep 20252212 PMAQI
26th Sep 2025221 PMAQI
26th Sep 2025222 PMAQI
26th Sep 2025183 PMAQI
26th Sep 2025174 PMAQI
26th Sep 2025215 PMAQI
26th Sep 2025196 PMAQI
26th Sep 2025287 PMAQI
26th Sep 2025288 PMAQI
26th Sep 2025309 PMAQI
26th Sep 20253310 PMAQI
26th Sep 20253511 PMAQI
27th Sep 20253812 AMAQI
27th Sep 2025381 AMAQI
27th Sep 2025332 AMAQI
27th Sep 2025283 AMAQI
27th Sep 2025284 AMAQI
27th Sep 2025285 AMAQI
27th Sep 2025286 AMAQI
12°C10/15°C
27th Sep 2025227 AMAQI
27th Sep 2025258 AMAQI
27th Sep 2025369 AMAQI
27th Sep 20254210 AMAQI
27th Sep 20254011 AMAQI
27th Sep 20254412 PMAQI
27th Sep 2025391 PMAQI
27th Sep 2025392 PMAQI
27th Sep 2025343 PMAQI
27th Sep 2025394 PMAQI
27th Sep 2025345 PMAQI
27th Sep 2025326 PMAQI
27th Sep 2025237 PMAQI
27th Sep 2025228 PMAQI
27th Sep 2025229 PMAQI
27th Sep 20252210 PMAQI
27th Sep 20252211 PMAQI
28th Sep 20252112 AMAQI
28th Sep 2025181 AMAQI
28th Sep 2025182 AMAQI
28th Sep 2025223 AMAQI
28th Sep 2025194 AMAQI
28th Sep 2025205 AMAQI
28th Sep 2025226 AMAQI
14°C12/16°C
28th Sep 2025227 AMAQI
28th Sep 2025218 AMAQI
28th Sep 2025229 AMAQI
28th Sep 20252210 AMAQI
28th Sep 20252211 AMAQI
28th Sep 20251712 PMAQI
28th Sep 2025201 PMAQI
28th Sep 2025182 PMAQI
28th Sep 2025173 PMAQI
28th Sep 2025164 PMAQI
28th Sep 2025175 PMAQI
28th Sep 2025186 PMAQI
28th Sep 2025177 PMAQI
28th Sep 2025238 PMAQI
28th Sep 2025379 PMAQI
28th Sep 20254710 PMAQI
28th Sep 20255311 PMAQI
29th Sep 20255312 AMAQI
29th Sep 2025501 AMAQI
29th Sep 2025372 AMAQI
29th Sep 2025313 AMAQI
29th Sep 2025224 AMAQI
29th Sep 2025175 AMAQI
29th Sep 2025186 AMAQI
15°C12/17°C
29th Sep 2025227 AMAQI
29th Sep 2025268 AMAQI
29th Sep 2025119 AMAQI
29th Sep 20251110 AMAQI
29th Sep 20251411 AMAQI
29th Sep 20251612 PMAQI
29th Sep 2025281 PMAQI
29th Sep 2025352 PMAQI
29th Sep 2025323 PMAQI
29th Sep 2025404 PMAQI
29th Sep 2025395 PMAQI
29th Sep 2025346 PMAQI
29th Sep 2025277 PMAQI
29th Sep 2025348 PMAQI
29th Sep 2025369 PMAQI
29th Sep 20254410 PMAQI
29th Sep 20254311 PMAQI
30th Sep 20255012 AMAQI
30th Sep 2025501 AMAQI
30th Sep 2025532 AMAQI
30th Sep 2025483 AMAQI
30th Sep 2025464 AMAQI
30th Sep 2025485 AMAQI
30th Sep 2025446 AMAQI
14°C10/17°C
30th Sep 2025397 AMAQI
30th Sep 2025398 AMAQI
30th Sep 2025339 AMAQI
30th Sep 20254810 AMAQI
30th Sep 20254611 AMAQI
30th Sep 20253312 PMAQI
30th Sep 2025371 PMAQI
30th Sep 2025292 PMAQI
30th Sep 2025293 PMAQI
30th Sep 2025294 PMAQI
30th Sep 2025265 PMAQI
30th Sep 2025276 PMAQI
30th Sep 2025297 PMAQI
30th Sep 2025358 PMAQI
30th Sep 2025389 PMAQI
30th Sep 20254210 PMAQI
30th Sep 20254511 PMAQI
1st Oct 20255012 AMAQI
1st Oct 2025511 AMAQI
1st Oct 2025422 AMAQI
1st Oct 2025413 AMAQI
1st Oct 2025424 AMAQI
1st Oct 2025375 AMAQI
1st Oct 2025376 AMAQI
14°C11/17°C
1st Oct 2025397 AMAQI
1st Oct 2025528 AMAQI
1st Oct 2025509 AMAQI
1st Oct 20255410 AMAQI
1st Oct 20255311 AMAQI
1st Oct 20255712 PMAQI
1st Oct 2025551 PMAQI
1st Oct 2025492 PMAQI
1st Oct 2025413 PMAQI
1st Oct 2025394 PMAQI
1st Oct 2025485 PMAQI
1st Oct 2025506 PMAQI
1st Oct 2025527 PMAQI
1st Oct 2025528 PMAQI
1st Oct 2025579 PMAQI
1st Oct 20255810 PMAQI
1st Oct 20256211 PMAQI
2nd Oct 20256212 AMAQI
2nd Oct 2025641 AMAQI
2nd Oct 2025662 AMAQI
2nd Oct 2025653 AMAQI
2nd Oct 2025654 AMAQI
2nd Oct 2025655 AMAQI
2nd Oct 2025636 AMAQI
15°C12/17°C
2nd Oct 2025637 AMAQI
2nd Oct 2025638 AMAQI
2nd Oct 2025649 AMAQI
2nd Oct 20256610 AMAQI
2nd Oct 20256411 AMAQI
2nd Oct 20256412 PMAQI
2nd Oct 2025601 PMAQI
2nd Oct 2025502 PMAQI
2nd Oct 2025463 PMAQI
2nd Oct 2025524 PMAQI
2nd Oct 2025515 PMAQI
2nd Oct 2025496 PMAQI
2nd Oct 2025477 PMAQI
2nd Oct 2025508 PMAQI
2nd Oct 2025489 PMAQI
2nd Oct 20255310 PMAQI
2nd Oct 20255311 PMAQI
3rd Oct 20255412 AMAQI
3rd Oct 2025551 AMAQI
3rd Oct 2025542 AMAQI
3rd Oct 2025523 AMAQI
3rd Oct 2025524 AMAQI
3rd Oct 2025445 AMAQI
3rd Oct 2025436 AMAQI
16°C14/17°C
3rd Oct 2025427 AMAQI
3rd Oct 2025328 AMAQI
3rd Oct 2025329 AMAQI
3rd Oct 20253210 AMAQI
3rd Oct 20253511 AMAQI
3rd Oct 20253712 PMAQI
3rd Oct 2025511 PMAQI
3rd Oct 2025412 PMAQI
3rd Oct 2025543 PMAQI
3rd Oct 2025534 PMAQI
3rd Oct 2025475 PMAQI
3rd Oct 2025456 PMAQI
3rd Oct 2025477 PMAQI
3rd Oct 2025548 PMAQI
3rd Oct 2025409 PMAQI
3rd Oct 20254210 PMAQI
3rd Oct 20254511 PMAQI
4th Oct 20254612 AMAQI
4th Oct 2025461 AMAQI
4th Oct 2025542 AMAQI
4th Oct 2025243 AMAQI
4th Oct 2025224 AMAQI
4th Oct 2025395 AMAQI
4th Oct 2025146 AMAQI
17°C15/17°C
4th Oct 2025407 AMAQI
4th Oct 2025408 AMAQI
4th Oct 2025389 AMAQI
4th Oct 20254110 AMAQI
4th Oct 20254211 AMAQI
4th Oct 20255012 PMAQI
4th Oct 2025401 PMAQI
4th Oct 2025402 PMAQI
4th Oct 2025433 PMAQI
4th Oct 2025514 PMAQI
4th Oct 2025445 PMAQI
4th Oct 2025396 PMAQI
4th Oct 2025397 PMAQI
4th Oct 2025388 PMAQI
4th Oct 2025409 PMAQI
4th Oct 20253910 PMAQI
4th Oct 20254011 PMAQI
5th Oct 20253812 AMAQI
5th Oct 2025391 AMAQI
5th Oct 2025392 AMAQI
5th Oct 2025383 AMAQI
5th Oct 2025404 AMAQI
5th Oct 2025565 AMAQI
5th Oct 2025606 AMAQI
13°C11/14°C
5th Oct 2025597 AMAQI
5th Oct 2025628 AMAQI
5th Oct 2025539 AMAQI
5th Oct 20254610 AMAQI
5th Oct 20255911 AMAQI
5th Oct 20254012 PMAQI
5th Oct 2025401 PMAQI
5th Oct 2025382 PMAQI
5th Oct 2025403 PMAQI
5th Oct 2025384 PMAQI
5th Oct 2025635 PMAQI
5th Oct 2025636 PMAQI
5th Oct 2025597 PMAQI
5th Oct 2025528 PMAQI
5th Oct 2025479 PMAQI
5th Oct 20254110 PMAQI
5th Oct 20254111 PMAQI
6th Oct 20253812 AMAQI
6th Oct 2025391 AMAQI
6th Oct 2025412 AMAQI
6th Oct 2025453 AMAQI
6th Oct 2025514 AMAQI
6th Oct 2025475 AMAQI
6th Oct 2025416 AMAQI
13°C11/15°C
6th Oct 2025357 AMAQI
6th Oct 2025388 AMAQI
6th Oct 2025399 AMAQI
6th Oct 20253710 AMAQI
6th Oct 20253811 AMAQI
6th Oct 20253512 PMAQI
6th Oct 2025351 PMAQI
6th Oct 2025392 PMAQI
6th Oct 2025383 PMAQI
6th Oct 2025404 PMAQI
6th Oct 2025385 PMAQI
6th Oct 2025346 PMAQI
14°C11/17°C
7th Oct 20253512 PMAQI
7th Oct 2025321 PMAQI
7th Oct 2025122 PMAQI
7th Oct 2025113 PMAQI
7th Oct 2025124 PMAQI
7th Oct 2025135 PMAQI
7th Oct 2025146 PMAQI
7th Oct 2025237 PMAQI
7th Oct 2025368 PMAQI
7th Oct 2025279 PMAQI
7th Oct 20252210 PMAQI
7th Oct 20254111 PMAQI
8th Oct 20253912 AMAQI
8th Oct 2025421 AMAQI
8th Oct 2025372 AMAQI
8th Oct 2025483 AMAQI
8th Oct 2025464 AMAQI
8th Oct 2025425 AMAQI
8th Oct 2025446 AMAQI
14°C12/17°C
8th Oct 2025517 AMAQI
8th Oct 2025498 AMAQI
8th Oct 2025519 AMAQI
8th Oct 20255010 AMAQI
8th Oct 20255111 AMAQI
8th Oct 20255212 PMAQI
8th Oct 2025491 PMAQI
8th Oct 2025432 PMAQI
8th Oct 2025483 PMAQI
8th Oct 2025444 PMAQI
8th Oct 2025395 PMAQI
8th Oct 2025416 PMAQI
8th Oct 2025347 PMAQI
8th Oct 2025148 PMAQI
8th Oct 2025139 PMAQI
8th Oct 20251310 PMAQI
8th Oct 20253911 PMAQI
9th Oct 20252012 AMAQI
9th Oct 2025441 AMAQI
9th Oct 2025432 AMAQI
9th Oct 2025523 AMAQI
9th Oct 2025514 AMAQI
9th Oct 2025395 AMAQI
9th Oct 2025466 AMAQI
14°C11/16°C
9th Oct 2025467 AMAQI
9th Oct 2025438 AMAQI
9th Oct 2025469 AMAQI
9th Oct 20254610 AMAQI
9th Oct 20255111 AMAQI
9th Oct 20255012 PMAQI
9th Oct 2025511 PMAQI
9th Oct 2025492 PMAQI
9th Oct 2025533 PMAQI
9th Oct 2025504 PMAQI
9th Oct 2025505 PMAQI
9th Oct 2025446 PMAQI
9th Oct 2025427 PMAQI
9th Oct 2025438 PMAQI
9th Oct 2025429 PMAQI
9th Oct 20255010 PMAQI
9th Oct 20255411 PMAQI
10th Oct 20255412 AMAQI
10th Oct 2025511 AMAQI
10th Oct 2025462 AMAQI
10th Oct 2025493 AMAQI
10th Oct 2025434 AMAQI
10th Oct 2025485 AMAQI
10th Oct 2025486 AMAQI
13°C10/17°C
10th Oct 2025497 AMAQI
10th Oct 2025448 AMAQI
10th Oct 2025459 AMAQI
10th Oct 20254310 AMAQI
10th Oct 20254311 AMAQI
10th Oct 20253912 PMAQI
10th Oct 2025441 PMAQI
10th Oct 2025352 PMAQI
10th Oct 2025433 PMAQI
10th Oct 2025484 PMAQI
10th Oct 2025505 PMAQI
10th Oct 2025386 PMAQI
10th Oct 2025417 PMAQI
10th Oct 2025398 PMAQI
10th Oct 2025399 PMAQI
10th Oct 20254410 PMAQI
10th Oct 20255411 PMAQI
11th Oct 20255212 AMAQI
11th Oct 2025541 AMAQI
11th Oct 2025492 AMAQI
11th Oct 2025513 AMAQI
11th Oct 2025564 AMAQI
11th Oct 2025575 AMAQI
11th Oct 2025556 AMAQI
14°C11/17°C
11th Oct 2025487 AMAQI
11th Oct 2025488 AMAQI
11th Oct 2025509 AMAQI
11th Oct 20255110 AMAQI
11th Oct 20255411 AMAQI
11th Oct 20256012 PMAQI
11th Oct 2025651 PMAQI
11th Oct 2025672 PMAQI
11th Oct 2025693 PMAQI
11th Oct 2025724 PMAQI
11th Oct 2025685 PMAQI
11th Oct 2025666 PMAQI
11th Oct 2025617 PMAQI
11th Oct 2025618 PMAQI
11th Oct 2025579 PMAQI
11th Oct 20255610 PMAQI
11th Oct 20256011 PMAQI
12th Oct 20256712 AMAQI
12th Oct 2025711 AMAQI
12th Oct 2025722 AMAQI
12th Oct 2025703 AMAQI
12th Oct 2025764 AMAQI
12th Oct 2025755 AMAQI
12th Oct 2025706 AMAQI
14°C12/16°C
12th Oct 2025737 AMAQI
12th Oct 2025748 AMAQI
12th Oct 2025729 AMAQI
12th Oct 20257210 AMAQI
12th Oct 20257011 AMAQI
12th Oct 20257012 PMAQI
12th Oct 2025661 PMAQI
12th Oct 2025702 PMAQI
12th Oct 2025673 PMAQI
12th Oct 2025664 PMAQI
12th Oct 2025635 PMAQI
12th Oct 2025636 PMAQI
12th Oct 2025657 PMAQI
12th Oct 2025668 PMAQI
12th Oct 2025679 PMAQI
12th Oct 20256810 PMAQI
12th Oct 20257111 PMAQI
13th Oct 20257212 AMAQI
13th Oct 2025601 AMAQI
13th Oct 2025572 AMAQI
13th Oct 2025563 AMAQI
13th Oct 2025544 AMAQI
13th Oct 2025585 AMAQI
13th Oct 2025636 AMAQI
13°C10/17°C
13th Oct 2025477 AMAQI
13th Oct 2025478 AMAQI
13th Oct 2025479 AMAQI
13th Oct 20254910 AMAQI
13th Oct 20255211 AMAQI
13th Oct 20255012 PMAQI
13th Oct 2025491 PMAQI
13th Oct 2025502 PMAQI
13th Oct 2025543 PMAQI
13th Oct 2025524 PMAQI
13th Oct 2025455 PMAQI
13th Oct 2025496 PMAQI
13th Oct 2025507 PMAQI
13th Oct 2025448 PMAQI
13th Oct 2025469 PMAQI
13th Oct 20254310 PMAQI
13th Oct 20254211 PMAQI
14th Oct 20255312 AMAQI
14th Oct 2025511 AMAQI
14th Oct 2025502 AMAQI
14th Oct 2025403 AMAQI
14th Oct 2025354 AMAQI
14th Oct 2025375 AMAQI
14th Oct 2025326 AMAQI
15°C13/17°C
14th Oct 2025377 AMAQI
14th Oct 2025358 AMAQI
14th Oct 2025379 AMAQI
14th Oct 20253510 AMAQI
14th Oct 20253311 AMAQI
14th Oct 20252512 PMAQI
14th Oct 2025251 PMAQI
14th Oct 2025242 PMAQI
14th Oct 2025233 PMAQI
14th Oct 2025124 PMAQI
14th Oct 2025155 PMAQI
14th Oct 2025426 PMAQI
14th Oct 2025477 PMAQI
14th Oct 2025498 PMAQI
14th Oct 2025469 PMAQI
14th Oct 20254610 PMAQI
14th Oct 20255211 PMAQI
15th Oct 20255212 AMAQI
15th Oct 2025531 AMAQI
15th Oct 2025492 AMAQI
15th Oct 2025353 AMAQI
15th Oct 2025364 AMAQI
15th Oct 2025385 AMAQI
15th Oct 2025476 AMAQI
14°C11/16°C
15th Oct 2025427 AMAQI
15th Oct 2025358 AMAQI
15th Oct 2025279 AMAQI
15th Oct 20252410 AMAQI
15th Oct 20252511 AMAQI
15th Oct 20252212 PMAQI
15th Oct 2025221 PMAQI
15th Oct 2025222 PMAQI
15th Oct 2025233 PMAQI
15th Oct 2025254 PMAQI
15th Oct 2025265 PMAQI
15th Oct 2025326 PMAQI
15th Oct 2025397 PMAQI
15th Oct 2025528 PMAQI
15th Oct 2025459 PMAQI
15th Oct 20253910 PMAQI
15th Oct 20254111 PMAQI
16th Oct 20254612 AMAQI
16th Oct 2025481 AMAQI
16th Oct 2025462 AMAQI
16th Oct 2025433 AMAQI
16th Oct 2025464 AMAQI
16th Oct 2025445 AMAQI
16th Oct 2025286 AMAQI
13°C11/15°C
16th Oct 2025287 AMAQI
16th Oct 2025328 AMAQI
16th Oct 2025209 AMAQI
16th Oct 20252410 AMAQI
16th Oct 20251411 AMAQI
16th Oct 20251312 PMAQI
16th Oct 2025161 PMAQI
16th Oct 2025352 PMAQI
16th Oct 2025453 PMAQI
16th Oct 2025414 PMAQI
16th Oct 2025385 PMAQI
16th Oct 2025386 PMAQI
16th Oct 2025467 PMAQI
16th Oct 2025488 PMAQI
16th Oct 2025489 PMAQI
16th Oct 20255610 PMAQI
16th Oct 20256011 PMAQI
17th Oct 20255412 AMAQI
17th Oct 2025551 AMAQI
17th Oct 2025552 AMAQI
17th Oct 2025563 AMAQI
17th Oct 2025534 AMAQI
17th Oct 2025465 AMAQI
17th Oct 2025496 AMAQI
13°C10/15°C
17th Oct 2025457 AMAQI
17th Oct 2025488 AMAQI
17th Oct 2025479 AMAQI
17th Oct 20254310 AMAQI
17th Oct 20254211 AMAQI
17th Oct 20253912 PMAQI
17th Oct 2025411 PMAQI
17th Oct 2025402 PMAQI
17th Oct 2025393 PMAQI
17th Oct 2025354 PMAQI
17th Oct 2025365 PMAQI
17th Oct 2025336 PMAQI
17th Oct 2025227 PMAQI
17th Oct 2025358 PMAQI
17th Oct 2025419 PMAQI
17th Oct 20253910 PMAQI
17th Oct 20254311 PMAQI
18th Oct 20255112 AMAQI
18th Oct 2025531 AMAQI
18th Oct 2025522 AMAQI
18th Oct 2025533 AMAQI
18th Oct 2025394 AMAQI
18th Oct 2025475 AMAQI
18th Oct 2025446 AMAQI
13°C11/16°C
18th Oct 2025437 AMAQI
18th Oct 2025478 AMAQI
18th Oct 2025529 AMAQI
18th Oct 20255010 AMAQI
18th Oct 20254411 AMAQI
18th Oct 20254612 PMAQI
18th Oct 2025461 PMAQI
18th Oct 2025462 PMAQI
18th Oct 2025463 PMAQI
18th Oct 2025414 PMAQI
18th Oct 2025365 PMAQI
18th Oct 2025336 PMAQI
18th Oct 2025357 PMAQI
18th Oct 2025398 PMAQI
18th Oct 2025379 PMAQI
18th Oct 20253710 PMAQI
18th Oct 20255311 PMAQI
19th Oct 20254512 AMAQI
19th Oct 2025451 AMAQI
19th Oct 2025382 AMAQI
19th Oct 2025343 AMAQI
19th Oct 2025374 AMAQI
19th Oct 2025425 AMAQI
19th Oct 2025386 AMAQI
14°C13/15°C
19th Oct 2025397 AMAQI
19th Oct 2025428 AMAQI
19th Oct 2025479 AMAQI
19th Oct 20254910 AMAQI
19th Oct 20255011 AMAQI
19th Oct 20255512 PMAQI
19th Oct 2025521 PMAQI
19th Oct 2025512 PMAQI
19th Oct 2025473 PMAQI
19th Oct 2025444 PMAQI
19th Oct 2025375 PMAQI
19th Oct 2025466 PMAQI
19th Oct 2025547 PMAQI
19th Oct 2025538 PMAQI
19th Oct 2025549 PMAQI
19th Oct 20255810 PMAQI
19th Oct 20255911 PMAQI
20th Oct 20255812 AMAQI
20th Oct 2025361 AMAQI
20th Oct 2025272 AMAQI
20th Oct 2025173 AMAQI
20th Oct 2025224 AMAQI
20th Oct 2025215 AMAQI
20th Oct 2025216 AMAQI
15°C14/15°C
20th Oct 2025237 AMAQI
20th Oct 2025238 AMAQI
20th Oct 2025309 AMAQI
20th Oct 20253610 AMAQI
20th Oct 20251611 AMAQI
20th Oct 20251412 PMAQI
20th Oct 2025351 PMAQI
20th Oct 2025362 PMAQI
20th Oct 2025173 PMAQI
20th Oct 2025174 PMAQI
20th Oct 2025175 PMAQI
20th Oct 2025156 PMAQI
20th Oct 2025157 PMAQI
20th Oct 2025188 PMAQI
20th Oct 2025169 PMAQI
20th Oct 20252010 PMAQI
20th Oct 20254211 PMAQI
21st Oct 20256012 AMAQI
21st Oct 2025531 AMAQI
21st Oct 2025362 AMAQI
21st Oct 2025383 AMAQI
21st Oct 2025254 AMAQI
21st Oct 2025255 AMAQI
21st Oct 2025256 AMAQI
14°C12/15°C
21st Oct 2025247 AMAQI
21st Oct 2025248 AMAQI
21st Oct 2025239 AMAQI
21st Oct 20252410 AMAQI
21st Oct 20252411 AMAQI
21st Oct 20252512 PMAQI
21st Oct 2025251 PMAQI
21st Oct 2025252 PMAQI
21st Oct 2025183 PMAQI
21st Oct 2025174 PMAQI
21st Oct 2025155 PMAQI
21st Oct 2025126 PMAQI
21st Oct 2025147 PMAQI
21st Oct 2025168 PMAQI
21st Oct 2025139 PMAQI
21st Oct 20251510 PMAQI
21st Oct 20251311 PMAQI
22nd Oct 20251512 AMAQI
22nd Oct 2025181 AMAQI
22nd Oct 2025182 AMAQI
22nd Oct 2025223 AMAQI
22nd Oct 2025224 AMAQI
22nd Oct 2025235 AMAQI
22nd Oct 2025206 AMAQI
13°C11/15°C
22nd Oct 2025187 AMAQI
22nd Oct 2025188 AMAQI
22nd Oct 2025219 AMAQI
22nd Oct 20252310 AMAQI
22nd Oct 20252311 AMAQI
22nd Oct 20252312 PMAQI
22nd Oct 2025241 PMAQI
22nd Oct 2025252 PMAQI
22nd Oct 2025253 PMAQI
22nd Oct 2025204 PMAQI
22nd Oct 2025185 PMAQI
22nd Oct 2025186 PMAQI
22nd Oct 2025167 PMAQI
22nd Oct 2025148 PMAQI
22nd Oct 2025209 PMAQI
22nd Oct 20252310 PMAQI
22nd Oct 20252711 PMAQI
23rd Oct 20252012 AMAQI
23rd Oct 2025151 AMAQI
23rd Oct 2025112 AMAQI
23rd Oct 2025133 AMAQI
23rd Oct 2025124 AMAQI
23rd Oct 2025115 AMAQI
23rd Oct 2025136 AMAQI
13°C10/14°C
23rd Oct 2025127 AMAQI
23rd Oct 2025118 AMAQI
23rd Oct 2025139 AMAQI
23rd Oct 20251710 AMAQI
23rd Oct 20251711 AMAQI
23rd Oct 20251512 PMAQI
23rd Oct 2025111 PMAQI
23rd Oct 2025112 PMAQI
23rd Oct 2025113 PMAQI
23rd Oct 2025114 PMAQI
23rd Oct 2025115 PMAQI
23rd Oct 2025136 PMAQI
23rd Oct 2025127 PMAQI
23rd Oct 2025128 PMAQI
23rd Oct 2025139 PMAQI
23rd Oct 20251610 PMAQI
23rd Oct 20251311 PMAQI
24th Oct 20251212 AMAQI
24th Oct 2025171 AMAQI
24th Oct 2025162 AMAQI
24th Oct 2025113 AMAQI
24th Oct 2025114 AMAQI
24th Oct 2025115 AMAQI
24th Oct 2025116 AMAQI
10°C7/13°C
24th Oct 2025137 AMAQI
24th Oct 2025178 AMAQI
24th Oct 2025199 AMAQI
24th Oct 20252010 AMAQI
24th Oct 20251711 AMAQI
24th Oct 20251712 PMAQI
24th Oct 2025171 PMAQI
24th Oct 2025172 PMAQI
24th Oct 2025173 PMAQI
24th Oct 2025274 PMAQI
24th Oct 2025405 PMAQI
24th Oct 2025416 PMAQI
24th Oct 2025367 PMAQI
24th Oct 2025308 PMAQI
24th Oct 2025309 PMAQI
24th Oct 20253310 PMAQI
24th Oct 20253311 PMAQI
25th Oct 20254112 AMAQI
25th Oct 2025471 AMAQI
25th Oct 2025382 AMAQI
25th Oct 2025213 AMAQI
25th Oct 2025274 AMAQI
25th Oct 2025325 AMAQI
25th Oct 2025116 AMAQI
11°C8/13°C
25th Oct 2025117 AMAQI
25th Oct 2025118 AMAQI
25th Oct 2025119 AMAQI
25th Oct 20251110 AMAQI
25th Oct 20251111 AMAQI
25th Oct 20251112 PMAQI
25th Oct 2025111 PMAQI
25th Oct 2025112 PMAQI
25th Oct 2025113 PMAQI
25th Oct 2025114 PMAQI
25th Oct 2025115 PMAQI
25th Oct 2025116 PMAQI
25th Oct 2025117 PMAQI
25th Oct 2025118 PMAQI
25th Oct 2025139 PMAQI
25th Oct 20251710 PMAQI
25th Oct 20251711 PMAQI
26th Oct 20251712 AMAQI
26th Oct 2025131 AMAQI
26th Oct 2025142 AMAQI
26th Oct 2025143 AMAQI
26th Oct 2025134 AMAQI
26th Oct 2025115 AMAQI
26th Oct 2025116 AMAQI
10°C8/12°C
26th Oct 2025127 AMAQI
7 AM26th Oct 2025128 AMAQI
26th Oct 2025139 AMAQI
26th Oct 20251710 AMAQI
26th Oct 20252011 AMAQI
26th Oct 20251712 PMAQI
12 PM6 PM
12 AM
6 AM
--°C/°C
Day time
Avg. Highest Time
7 AM - 6 PM
36AQI
12 hours / Day
360 hours / Month
Avg. Lowest Time
7 AM - 12 PM
36AQI
6 hours / Day
180 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 7 AM to 6 PM (Avg. 36), while the lowest AQI was between 7 AM to 12 PM (Avg. 36).
Night time
Avg. Highest Time
12 AM - 1 AM
43AQI
2 hours / Day
60 hours / Month
Avg. Lowest Time
6 AM - 10 PM
37AQI
5 hours / Day
150 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 1 AM (Avg. 43), while the lowest AQI was between 6 AM to 10 PM (Avg. 37).
2025 Days Vs Air Quality
Hilsea, Portsmouth, United Kingdom
2025
80%
238
19%
58
0.6%
2
Total number of days with different AQI categories in last 299 days in 2025 (66 days remaining)
Good
238 DaysModerate
58 DaysPoor
2 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 80%
Health Risk Level:
Low
In 2025, 80% of 299 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
Hilsea, Portsmouth, United Kingdom
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
35AQI
35AQI
2nd January 2025
30AQI
30AQI
3rd January 2025
44AQI
44AQI
4th January 2025
49AQI
49AQI
5th January 2025
25AQI
25AQI
6th January 2025
27AQI
27AQI
7th January 2025
25AQI
25AQI
8th January 2025
27AQI
27AQI
9th January 2025
42AQI
42AQI
10th January 2025
49AQI
49AQI
11th January 2025
58AQI
58AQI
12th January 2025
63AQI
63AQI
13th January 2025
45AQI
45AQI
14th January 2025
57AQI
57AQI
15th January 2025
55AQI
55AQI
16th January 2025
51AQI
51AQI
17th January 2025
55AQI
55AQI
18th January 2025
67AQI
67AQI
19th January 2025
63AQI
63AQI
20th January 2025
59AQI
59AQI
21st January 2025
67AQI
67AQI
22nd January 2025
68AQI
68AQI
23rd January 2025
47AQI
47AQI
24th January 2025
49AQI
49AQI
25th January 2025
35AQI
35AQI
26th January 2025
41AQI
41AQI
27th January 2025
33AQI
33AQI
28th January 2025
33AQI
33AQI
29th January 2025
29AQI
29AQI
30th January 2025
29AQI
29AQI
31st January 2025
30AQI
30AQI
1st February 2025
27AQI
27AQI
2nd February 2025
45AQI
45AQI
3rd February 2025
52AQI
52AQI
4th February 2025
32AQI
32AQI
5th February 2025
41AQI
41AQI
6th February 2025
40AQI
40AQI
7th February 2025
41AQI
41AQI
8th February 2025
61AQI
61AQI
9th February 2025
41AQI
41AQI
10th February 2025
96AQI
96AQI
11th February 2025
74AQI
74AQI
12th February 2025
72AQI
72AQI
13th February 2025
74AQI
74AQI
14th February 2025
69AQI
69AQI
15th February 2025
82AQI
82AQI
16th February 2025
68AQI
68AQI
17th February 2025
67AQI
67AQI
18th February 2025
74AQI
74AQI
19th February 2025
79AQI
79AQI
20th February 2025
38AQI
38AQI
21st February 2025
39AQI
39AQI
22nd February 2025
43AQI
43AQI
23rd February 2025
36AQI
36AQI
24th February 2025
37AQI
37AQI
25th February 2025
31AQI
31AQI
26th February 2025
29AQI
29AQI
27th February 2025
27AQI
27AQI
28th February 2025
38AQI
38AQI
1st March 2025
44AQI
44AQI
2nd March 2025
59AQI
59AQI
3rd March 2025
79AQI
79AQI
4th March 2025
88AQI
88AQI
5th March 2025
106AQI
106AQI
6th March 2025
74AQI
74AQI
7th March 2025
53AQI
53AQI
8th March 2025
57AQI
57AQI
9th March 2025
64AQI
64AQI
10th March 2025
118AQI
118AQI
11th March 2025
68AQI
68AQI
12th March 2025
32AQI
32AQI
13th March 2025
26AQI
26AQI
14th March 2025
38AQI
38AQI
15th March 2025
26AQI
26AQI
16th March 2025
26AQI
26AQI
17th March 2025
30AQI
30AQI
18th March 2025
50AQI
50AQI
19th March 2025
65AQI
65AQI
20th March 2025
56AQI
56AQI
21st March 2025
56AQI
56AQI
22nd March 2025
41AQI
41AQI
23rd March 2025
60AQI
60AQI
24th March 2025
90AQI
90AQI
25th March 2025
72AQI
72AQI
26th March 2025
43AQI
43AQI
27th March 2025
49AQI
49AQI
28th March 2025
25AQI
25AQI
29th March 2025
25AQI
25AQI
30th March 2025
30AQI
30AQI
31st March 2025
32AQI
32AQI
1st April 2025
36AQI
36AQI
2nd April 2025
42AQI
42AQI
3rd April 2025
56AQI
56AQI
4th April 2025
61AQI
61AQI
5th April 2025
42AQI
42AQI
6th April 2025
30AQI
30AQI
7th April 2025
34AQI
34AQI
8th April 2025
54AQI
54AQI
9th April 2025
37AQI
37AQI
10th April 2025
46AQI
46AQI
11th April 2025
68AQI
68AQI
12th April 2025
59AQI
59AQI
13th April 2025
42AQI
42AQI
14th April 2025
25AQI
25AQI
15th April 2025
36AQI
36AQI
16th April 2025
19AQI
19AQI
17th April 2025
26AQI
26AQI
18th April 2025
32AQI
32AQI
19th April 2025
30AQI
30AQI
20th April 2025
34AQI
34AQI
21st April 2025
48AQI
48AQI
22nd April 2025
23AQI
23AQI
23rd April 2025
22AQI
22AQI
24th April 2025
51AQI
51AQI
25th April 2025
52AQI
52AQI
26th April 2025
57AQI
57AQI
27th April 2025
61AQI
61AQI
28th April 2025
50AQI
50AQI
29th April 2025
52AQI
52AQI
30th April 2025
58AQI
58AQI
1st May 2025
59AQI
59AQI
2nd May 2025
62AQI
62AQI
3rd May 2025
43AQI
43AQI
4th May 2025
18AQI
18AQI
5th May 2025
19AQI
19AQI
6th May 2025
21AQI
21AQI
7th May 2025
21AQI
21AQI
8th May 2025
22AQI
22AQI
9th May 2025
28AQI
28AQI
10th May 2025
25AQI
25AQI
11th May 2025
30AQI
30AQI
12th May 2025
27AQI
27AQI
13th May 2025
29AQI
29AQI
14th May 2025
35AQI
35AQI
15th May 2025
37AQI
37AQI
16th May 2025
33AQI
33AQI
17th May 2025
36AQI
36AQI
18th May 2025
45AQI
45AQI
19th May 2025
39AQI
39AQI
20th May 2025
25AQI
25AQI
21st May 2025
34AQI
34AQI
22nd May 2025
38AQI
38AQI
23rd May 2025
28AQI
28AQI
24th May 2025
26AQI
26AQI
25th May 2025
22AQI
22AQI
26th May 2025
24AQI
24AQI
27th May 2025
24AQI
24AQI
28th May 2025
22AQI
22AQI
29th May 2025
23AQI
23AQI
30th May 2025
18AQI
18AQI
31st May 2025
25AQI
25AQI
1st June 2025
25AQI
25AQI
2nd June 2025
22AQI
22AQI
3rd June 2025
26AQI
26AQI
4th June 2025
20AQI
20AQI
5th June 2025
20AQI
20AQI
6th June 2025
18AQI
18AQI
7th June 2025
16AQI
16AQI
8th June 2025
19AQI
19AQI
9th June 2025
51AQI
51AQI
10th June 2025
42AQI
42AQI
11th June 2025
31AQI
31AQI
12th June 2025
39AQI
39AQI
13th June 2025
39AQI
39AQI
14th June 2025
37AQI
37AQI
15th June 2025
29AQI
29AQI
16th June 2025
25AQI
25AQI
17th June 2025
27AQI
27AQI
18th June 2025
26AQI
26AQI
19th June 2025
31AQI
31AQI
20th June 2025
36AQI
36AQI
21st June 2025
35AQI
35AQI
22nd June 2025
34AQI
34AQI
23rd June 2025
27AQI
27AQI
24th June 2025
25AQI
25AQI
25th June 2025
21AQI
21AQI
26th June 2025
19AQI
19AQI
27th June 2025
20AQI
20AQI
28th June 2025
18AQI
18AQI
29th June 2025
18AQI
18AQI
30th June 2025
23AQI
23AQI
1st July 2025
33AQI
33AQI
2nd July 2025
31AQI
31AQI
3rd July 2025
20AQI
20AQI
4th July 2025
19AQI
19AQI
5th July 2025
20AQI
20AQI
6th July 2025
20AQI
20AQI
7th July 2025
19AQI
19AQI
8th July 2025
19AQI
19AQI
9th July 2025
19AQI
19AQI
10th July 2025
20AQI
20AQI
11th July 2025
23AQI
23AQI
12th July 2025
23AQI
23AQI
13th July 2025
25AQI
25AQI
14th July 2025
31AQI
31AQI
15th July 2025
28AQI
28AQI
16th July 2025
27AQI
27AQI
17th July 2025
24AQI
24AQI
18th July 2025
22AQI
22AQI
19th July 2025
20AQI
20AQI
20th July 2025
20AQI
20AQI
21st July 2025
18AQI
18AQI
22nd July 2025
17AQI
17AQI
23rd July 2025
18AQI
18AQI
24th July 2025
35AQI
35AQI
25th July 2025
41AQI
41AQI
26th July 2025
42AQI
42AQI
27th July 2025
30AQI
30AQI
28th July 2025
30AQI
30AQI
29th July 2025
24AQI
24AQI
30th July 2025
22AQI
22AQI
31st July 2025
21AQI
21AQI
1st August 2025
22AQI
22AQI
2nd August 2025
21AQI
21AQI
3rd August 2025
24AQI
24AQI
4th August 2025
24AQI
24AQI
5th August 2025
23AQI
23AQI
6th August 2025
30AQI
30AQI
7th August 2025
31AQI
31AQI
8th August 2025
33AQI
33AQI
9th August 2025
26AQI
26AQI
10th August 2025
29AQI
29AQI
11th August 2025
45AQI
45AQI
12th August 2025
52AQI
52AQI
13th August 2025
55AQI
55AQI
14th August 2025
53AQI
53AQI
15th August 2025
38AQI
38AQI
16th August 2025
43AQI
43AQI
17th August 2025
38AQI
38AQI
18th August 2025
30AQI
30AQI
19th August 2025
29AQI
29AQI
20th August 2025
31AQI
31AQI
21st August 2025
30AQI
30AQI
22nd August 2025
24AQI
24AQI
23rd August 2025
24AQI
24AQI
24th August 2025
29AQI
29AQI
25th August 2025
30AQI
30AQI
26th August 2025
32AQI
32AQI
27th August 2025
31AQI
31AQI
28th August 2025
27AQI
27AQI
29th August 2025
24AQI
24AQI
30th August 2025
23AQI
23AQI
31st August 2025
24AQI
24AQI
1st September 2025
27AQI
27AQI
2nd September 2025
25AQI
25AQI
3rd September 2025
27AQI
27AQI
4th September 2025
23AQI
23AQI
5th September 2025
21AQI
21AQI
6th September 2025
21AQI
21AQI
7th September 2025
24AQI
24AQI
8th September 2025
24AQI
24AQI
9th September 2025
22AQI
22AQI
10th September 2025
22AQI
22AQI
11th September 2025
23AQI
23AQI
12th September 2025
21AQI
21AQI
13th September 2025
19AQI
19AQI
14th September 2025
20AQI
20AQI
15th September 2025
28AQI
28AQI
16th September 2025
28AQI
28AQI
17th September 2025
23AQI
23AQI
18th September 2025
19AQI
19AQI
19th September 2025
19AQI
19AQI
20th September 2025
24AQI
24AQI
21st September 2025
18AQI
18AQI
22nd September 2025
17AQI
17AQI
23rd September 2025
17AQI
17AQI
24th September 2025
17AQI
17AQI
25th September 2025
21AQI
21AQI
26th September 2025
22AQI
22AQI
27th September 2025
32AQI
32AQI
28th September 2025
23AQI
23AQI
29th September 2025
34AQI
34AQI
30th September 2025
41AQI
41AQI
1st October 2025
49AQI
49AQI
2nd October 2025
58AQI
58AQI
3rd October 2025
47AQI
47AQI
4th October 2025
40AQI
40AQI
5th October 2025
46AQI
46AQI
6th October 2025
39AQI
39AQI
7th October 2025
23AQI
23AQI
8th October 2025
39AQI
39AQI
9th October 2025
40AQI
40AQI
10th October 2025
47AQI
47AQI
11th October 2025
57AQI
57AQI
12th October 2025
68AQI
68AQI
13th October 2025
55AQI
55AQI
14th October 2025
41AQI
41AQI
15th October 2025
39AQI
39AQI
16th October 2025
40AQI
40AQI
17th October 2025
45AQI
45AQI
18th October 2025
46AQI
46AQI
19th October 2025
47AQI
47AQI
20th October 2025
30AQI
30AQI
21st October 2025
29AQI
29AQI
22nd October 2025
19AQI
19AQI
23rd October 2025
14AQI
14AQI
24th October 2025
20AQI
20AQI
25th October 2025
22AQI
22AQI
26th October 2025
27th October 2025
28th October 2025
29th October 2025
30th October 2025
31st October 2025
1st November 2025
2nd November 2025
3rd November 2025
4th November 2025
5th November 2025
6th November 2025
7th November 2025
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
45AQI
52AQI
54AQI
43AQI
30AQI
27AQI
25AQI
31AQI
23AQI
40AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202537AQI
20
11
16
12
15
14
2
19
11
29
2
29
1
31
28
3
30
21
4
238
58
2
Highest AQI recorded in
March54AQI
Lowest AQI recorded in
September23AQI
202436AQI
25
6
28
1
28
3
30
24
7
29
1
28
2
1
23
8
25
5
30
1
17
13
29
2
316
49
1
Highest AQI recorded in
November46AQI
Lowest AQI recorded in
October29AQI
202337AQI
25
6
19
7
2
26
5
21
9
29
2
21
9
31
30
1
24
5
28
3
29
29
2
312
49
2
Highest AQI recorded in
February46AQI
Lowest AQI recorded in
August26AQI
202239AQI
15
6
14
17
25
5
29
2
29
1
23
2
3
27
1
31
25
5
18
13
239
52
Highest AQI recorded in
March61AQI
Lowest AQI recorded in
September28AQI
Most & Least Polluted Years Over the Last 4 Years
Most Polluted Year Recorded
2022(Avg.)
39AQILeast Polluted Year Recorded
2024(Avg.)
36AQIHilsea's annual 2025 AQI (37) shows an average percentage change of -0.7% (improved AQI) compared to previous years: 2022 (39), 2023 (37), 2024 (36).
