Hillingdon Harmondsworth Os, West Drayton, Hillingdon, 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+
August Air Quality Analysis
Hillingdon Harmondsworth Os, West Drayton, Hillingdon, United Kingdom
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
2nd Aug 2024
53AQILowest AQI recorded on
26th Aug 2021
8AQISame Day Analysis (4th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 25 of Good air quality, showing improvement over 2024 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 4th Aug - 5th Aug 2025
Hillingdon Harmondsworth Os, West Drayton, Hillingdon, United Kingdom
AQI
Day
Night
.
5 AM4th Aug 2025
9 PM
4 AM5th Aug 2025
Day time
Avg. Highest Time
8AM4th Aug
28AQI
Avg. Lowest Time
6PM4th Aug
22AQI
Night time
Avg. Highest Time
1AM5th Aug
28AQI
Avg. Lowest Time
4AM5th Aug
22AQI
In the last 24 hours,
Hillingdon Harmondsworth Os's AQI reached its highest point of 28 at 8 AM during the Day, while the lowest point, 22, was recorded at 4 AM during the Night between 4th Aug and 5th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Hillingdon Harmondsworth Os, West Drayton, Hillingdon, United Kingdom
JulAug
06th - 07th07th - 08th08th - 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
Day
Night
6th Jul 2025185 AMAQI
6th Jul 2025176 AMAQI
6th Jul 2025187 AMAQI
6th Jul 2025168 AMAQI
6th Jul 2025149 AMAQI
6th Jul 20251710 AMAQI
6th Jul 20251411 AMAQI
6th Jul 20251412 PMAQI
6th Jul 2025161 PMAQI
6th Jul 2025162 PMAQI
6th Jul 2025163 PMAQI
6th Jul 2025174 PMAQI
6th Jul 2025185 PMAQI
6th Jul 2025186 PMAQI
6th Jul 2025187 PMAQI
6th Jul 2025178 PMAQI
6th Jul 2025179 PMAQI
6th Jul 20251710 PMAQI
6th Jul 20251811 PMAQI
7th Jul 20251812 AMAQI
7th Jul 2025161 AMAQI
7th Jul 2025152 AMAQI
7th Jul 2025173 AMAQI
7th Jul 2025174 AMAQI
18°C15/21°C
7th Jul 2025185 AMAQI
7th Jul 2025176 AMAQI
7th Jul 2025187 AMAQI
7th Jul 2025178 AMAQI
7th Jul 2025169 AMAQI
7th Jul 20252010 AMAQI
7th Jul 20251711 AMAQI
7th Jul 20251612 PMAQI
7th Jul 2025161 PMAQI
7th Jul 2025172 PMAQI
7th Jul 2025173 PMAQI
7th Jul 2025174 PMAQI
7th Jul 2025175 PMAQI
7th Jul 2025176 PMAQI
7th Jul 2025187 PMAQI
7th Jul 2025188 PMAQI
7th Jul 2025189 PMAQI
7th Jul 20251710 PMAQI
7th Jul 20251711 PMAQI
8th Jul 20251812 AMAQI
8th Jul 2025191 AMAQI
8th Jul 2025192 AMAQI
8th Jul 2025203 AMAQI
8th Jul 2025244 AMAQI
17°C12/22°C
8th Jul 2025205 AMAQI
8th Jul 2025186 AMAQI
8th Jul 2025197 AMAQI
8th Jul 2025208 AMAQI
8th Jul 2025199 AMAQI
8th Jul 20252010 AMAQI
8th Jul 20252311 AMAQI
8th Jul 20252212 PMAQI
8th Jul 2025221 PMAQI
8th Jul 2025222 PMAQI
8th Jul 2025223 PMAQI
8th Jul 2025224 PMAQI
8th Jul 2025225 PMAQI
8th Jul 2025216 PMAQI
8th Jul 2025227 PMAQI
8th Jul 2025228 PMAQI
8th Jul 2025209 PMAQI
8th Jul 20252010 PMAQI
8th Jul 20252011 PMAQI
9th Jul 20252012 AMAQI
9th Jul 2025201 AMAQI
9th Jul 2025212 AMAQI
9th Jul 2025203 AMAQI
9th Jul 2025214 AMAQI
18°C11/24°C
9th Jul 2025235 AMAQI
9th Jul 2025256 AMAQI
9th Jul 2025267 AMAQI
9th Jul 2025308 AMAQI
9th Jul 2025299 AMAQI
9th Jul 20252810 AMAQI
9th Jul 20252811 AMAQI
9th Jul 20252512 PMAQI
9th Jul 2025231 PMAQI
9th Jul 2025222 PMAQI
9th Jul 2025213 PMAQI
9th Jul 2025214 PMAQI
9th Jul 2025205 PMAQI
9th Jul 2025226 PMAQI
9th Jul 2025207 PMAQI
9th Jul 2025208 PMAQI
9th Jul 2025229 PMAQI
9th Jul 20252210 PMAQI
9th Jul 20252311 PMAQI
10th Jul 20252312 AMAQI
10th Jul 2025231 AMAQI
10th Jul 2025232 AMAQI
10th Jul 2025203 AMAQI
10th Jul 2025224 AMAQI
20°C13/25°C
10th Jul 2025275 AMAQI
10th Jul 2025216 AMAQI
10th Jul 2025207 AMAQI
10th Jul 2025208 AMAQI
10th Jul 2025199 AMAQI
10th Jul 20251810 AMAQI
10th Jul 20252011 AMAQI
10th Jul 20251812 PMAQI
10th Jul 2025231 PMAQI
10th Jul 2025222 PMAQI
10th Jul 2025223 PMAQI
10th Jul 2025204 PMAQI
10th Jul 2025205 PMAQI
10th Jul 2025206 PMAQI
10th Jul 2025197 PMAQI
10th Jul 2025218 PMAQI
10th Jul 2025219 PMAQI
10th Jul 20252210 PMAQI
10th Jul 20252211 PMAQI
11th Jul 20252112 AMAQI
11th Jul 2025221 AMAQI
11th Jul 2025222 AMAQI
11th Jul 2025233 AMAQI
11th Jul 2025234 AMAQI
24°C18/30°C
11th Jul 2025245 AMAQI
11th Jul 2025246 AMAQI
11th Jul 2025257 AMAQI
11th Jul 2025208 AMAQI
11th Jul 2025229 AMAQI
11th Jul 20252010 AMAQI
11th Jul 20251911 AMAQI
11th Jul 20251912 PMAQI
11th Jul 2025201 PMAQI
11th Jul 2025202 PMAQI
11th Jul 2025243 PMAQI
11th Jul 2025224 PMAQI
11th Jul 2025205 PMAQI
11th Jul 2025216 PMAQI
11th Jul 2025217 PMAQI
11th Jul 2025228 PMAQI
11th Jul 2025239 PMAQI
11th Jul 20252410 PMAQI
11th Jul 20252311 PMAQI
12th Jul 20252212 AMAQI
12th Jul 2025241 AMAQI
12th Jul 2025252 AMAQI
12th Jul 2025263 AMAQI
12th Jul 2025244 AMAQI
25°C18/32°C
12th Jul 2025285 AMAQI
12th Jul 2025286 AMAQI
12th Jul 2025247 AMAQI
12th Jul 2025228 AMAQI
12th Jul 2025239 AMAQI
12th Jul 20252110 AMAQI
12th Jul 20252111 AMAQI
12th Jul 20252112 PMAQI
12th Jul 2025221 PMAQI
12th Jul 2025222 PMAQI
12th Jul 2025213 PMAQI
12th Jul 2025224 PMAQI
12th Jul 2025265 PMAQI
12th Jul 2025266 PMAQI
12th Jul 2025257 PMAQI
12th Jul 2025238 PMAQI
12th Jul 2025249 PMAQI
12th Jul 20252410 PMAQI
12th Jul 20252411 PMAQI
13th Jul 20252412 AMAQI
13th Jul 2025261 AMAQI
13th Jul 2025272 AMAQI
13th Jul 2025283 AMAQI
13th Jul 2025324 AMAQI
24°C18/30°C
13th Jul 2025305 AMAQI
13th Jul 2025256 AMAQI
13th Jul 2025227 AMAQI
13th Jul 2025208 AMAQI
13th Jul 2025189 AMAQI
13th Jul 20251810 AMAQI
13th Jul 20251811 AMAQI
13th Jul 20252012 PMAQI
13th Jul 2025241 PMAQI
13th Jul 2025242 PMAQI
13th Jul 2025253 PMAQI
13th Jul 2025294 PMAQI
13th Jul 2025305 PMAQI
13th Jul 2025286 PMAQI
13th Jul 2025267 PMAQI
13th Jul 2025268 PMAQI
13th Jul 2025259 PMAQI
13th Jul 20252610 PMAQI
13th Jul 20252411 PMAQI
14th Jul 20252412 AMAQI
14th Jul 2025261 AMAQI
14th Jul 2025282 AMAQI
14th Jul 2025323 AMAQI
14th Jul 2025324 AMAQI
23°C16/30°C
14th Jul 2025305 AMAQI
14th Jul 2025346 AMAQI
14th Jul 2025367 AMAQI
14th Jul 2025258 AMAQI
14th Jul 2025279 AMAQI
14th Jul 20252510 AMAQI
14th Jul 20252511 AMAQI
14th Jul 20252512 PMAQI
14th Jul 2025271 PMAQI
14th Jul 2025282 PMAQI
14th Jul 2025283 PMAQI
14th Jul 2025274 PMAQI
14th Jul 2025285 PMAQI
14th Jul 2025276 PMAQI
14th Jul 2025287 PMAQI
14th Jul 2025288 PMAQI
14th Jul 2025319 PMAQI
14th Jul 20253010 PMAQI
14th Jul 20253011 PMAQI
15th Jul 20253012 AMAQI
15th Jul 2025291 AMAQI
15th Jul 2025272 AMAQI
15th Jul 2025283 AMAQI
15th Jul 2025264 AMAQI
21°C15/26°C
15th Jul 2025255 AMAQI
15th Jul 2025226 AMAQI
15th Jul 2025237 AMAQI
15th Jul 2025298 AMAQI
15th Jul 2025309 AMAQI
15th Jul 20253110 AMAQI
15th Jul 20253011 AMAQI
15th Jul 20252812 PMAQI
15th Jul 2025261 PMAQI
15th Jul 2025262 PMAQI
15th Jul 2025283 PMAQI
15th Jul 2025294 PMAQI
15th Jul 2025295 PMAQI
15th Jul 2025296 PMAQI
15th Jul 2025317 PMAQI
15th Jul 2025288 PMAQI
15th Jul 2025269 PMAQI
15th Jul 20252610 PMAQI
15th Jul 20252811 PMAQI
16th Jul 20252712 AMAQI
16th Jul 2025281 AMAQI
16th Jul 2025262 AMAQI
16th Jul 2025223 AMAQI
16th Jul 2025224 AMAQI
18°C13/23°C
16th Jul 2025215 AMAQI
16th Jul 2025226 AMAQI
16th Jul 2025287 AMAQI
16th Jul 2025348 AMAQI
16th Jul 2025359 AMAQI
16th Jul 20253410 AMAQI
16th Jul 20253211 AMAQI
16th Jul 20252512 PMAQI
16th Jul 2025221 PMAQI
16th Jul 2025262 PMAQI
16th Jul 2025283 PMAQI
16th Jul 2025284 PMAQI
16th Jul 2025275 PMAQI
16th Jul 2025276 PMAQI
16th Jul 2025277 PMAQI
16th Jul 2025268 PMAQI
16th Jul 2025279 PMAQI
16th Jul 20252510 PMAQI
16th Jul 20252511 PMAQI
17th Jul 20252512 AMAQI
17th Jul 2025241 AMAQI
17th Jul 2025242 AMAQI
17th Jul 2025223 AMAQI
17th Jul 2025214 AMAQI
21°C16/27°C
17th Jul 2025245 AMAQI
17th Jul 2025256 AMAQI
17th Jul 2025237 AMAQI
17th Jul 2025208 AMAQI
17th Jul 2025209 AMAQI
17th Jul 20251910 AMAQI
17th Jul 20251811 AMAQI
17th Jul 20252112 PMAQI
17th Jul 2025201 PMAQI
17th Jul 2025212 PMAQI
17th Jul 2025203 PMAQI
17th Jul 2025224 PMAQI
17th Jul 2025225 PMAQI
17th Jul 2025216 PMAQI
17th Jul 2025237 PMAQI
17th Jul 2025238 PMAQI
17th Jul 2025239 PMAQI
17th Jul 20252210 PMAQI
17th Jul 20252211 PMAQI
18th Jul 20252212 AMAQI
18th Jul 2025221 AMAQI
18th Jul 2025212 AMAQI
18th Jul 2025183 AMAQI
18th Jul 2025174 AMAQI
21°C18/26°C
18th Jul 2025195 AMAQI
18th Jul 2025226 AMAQI
18th Jul 2025217 AMAQI
18th Jul 2025158 AMAQI
18th Jul 2025169 AMAQI
18th Jul 20251610 AMAQI
18th Jul 20251711 AMAQI
18th Jul 20251612 PMAQI
18th Jul 2025181 PMAQI
18th Jul 2025192 PMAQI
18th Jul 2025223 PMAQI
18th Jul 2025224 PMAQI
18th Jul 2025215 PMAQI
18th Jul 2025206 PMAQI
18th Jul 2025237 PMAQI
18th Jul 2025208 PMAQI
18th Jul 2025219 PMAQI
18th Jul 20251910 PMAQI
18th Jul 20251911 PMAQI
19th Jul 20252012 AMAQI
19th Jul 2025201 AMAQI
19th Jul 2025212 AMAQI
19th Jul 2025203 AMAQI
19th Jul 2025204 AMAQI
24°C18/30°C
19th Jul 2025205 AMAQI
19th Jul 2025206 AMAQI
19th Jul 2025227 AMAQI
19th Jul 2025218 AMAQI
19th Jul 2025189 AMAQI
19th Jul 20251810 AMAQI
19th Jul 20251811 AMAQI
19th Jul 20251812 PMAQI
19th Jul 2025221 PMAQI
19th Jul 2025262 PMAQI
19th Jul 2025223 PMAQI
19th Jul 2025224 PMAQI
19th Jul 2025195 PMAQI
19th Jul 2025236 PMAQI
19th Jul 2025207 PMAQI
19th Jul 2025218 PMAQI
19th Jul 2025239 PMAQI
19th Jul 20252210 PMAQI
19th Jul 20252011 PMAQI
20th Jul 20252112 AMAQI
20th Jul 2025211 AMAQI
20th Jul 2025212 AMAQI
20th Jul 2025223 AMAQI
20th Jul 2025224 AMAQI
18°C17/22°C
20th Jul 2025245 AMAQI
20th Jul 2025226 AMAQI
20th Jul 2025207 AMAQI
20th Jul 2025178 AMAQI
20th Jul 2025169 AMAQI
20th Jul 20251510 AMAQI
20th Jul 20251811 AMAQI
20th Jul 20252012 PMAQI
20th Jul 2025221 PMAQI
20th Jul 2025192 PMAQI
20th Jul 2025183 PMAQI
20th Jul 2025184 PMAQI
20th Jul 2025195 PMAQI
20th Jul 2025206 PMAQI
20th Jul 2025207 PMAQI
20th Jul 2025208 PMAQI
20th Jul 2025219 PMAQI
20th Jul 20252010 PMAQI
20th Jul 20252111 PMAQI
21st Jul 20252012 AMAQI
21st Jul 2025211 AMAQI
21st Jul 2025202 AMAQI
21st Jul 2025193 AMAQI
21st Jul 2025194 AMAQI
18°C16/23°C
21st Jul 2025205 AMAQI
21st Jul 2025186 AMAQI
21st Jul 2025187 AMAQI
21st Jul 2025198 AMAQI
21st Jul 2025209 AMAQI
21st Jul 20252010 AMAQI
21st Jul 20252011 AMAQI
21st Jul 20252212 PMAQI
21st Jul 2025201 PMAQI
21st Jul 2025212 PMAQI
21st Jul 2025203 PMAQI
21st Jul 2025204 PMAQI
21st Jul 2025195 PMAQI
21st Jul 2025196 PMAQI
21st Jul 2025187 PMAQI
21st Jul 2025198 PMAQI
21st Jul 2025199 PMAQI
21st Jul 20252010 PMAQI
21st Jul 20251911 PMAQI
22nd Jul 20251912 AMAQI
22nd Jul 2025191 AMAQI
22nd Jul 2025182 AMAQI
22nd Jul 2025173 AMAQI
22nd Jul 2025164 AMAQI
18°C14/23°C
22nd Jul 2025175 AMAQI
22nd Jul 2025186 AMAQI
22nd Jul 2025177 AMAQI
22nd Jul 2025188 AMAQI
22nd Jul 2025179 AMAQI
22nd Jul 20251710 AMAQI
22nd Jul 20251611 AMAQI
22nd Jul 20251512 PMAQI
22nd Jul 2025161 PMAQI
22nd Jul 2025162 PMAQI
22nd Jul 2025163 PMAQI
22nd Jul 2025174 PMAQI
22nd Jul 2025175 PMAQI
22nd Jul 2025176 PMAQI
22nd Jul 2025177 PMAQI
22nd Jul 2025178 PMAQI
22nd Jul 2025189 PMAQI
22nd Jul 20251710 PMAQI
22nd Jul 20251711 PMAQI
23rd Jul 20251812 AMAQI
23rd Jul 2025181 AMAQI
23rd Jul 2025182 AMAQI
23rd Jul 2025163 AMAQI
23rd Jul 2025164 AMAQI
19°C14/24°C
23rd Jul 2025165 AMAQI
23rd Jul 2025186 AMAQI
23rd Jul 2025187 AMAQI
23rd Jul 2025248 AMAQI
23rd Jul 2025159 AMAQI
23rd Jul 20251710 AMAQI
23rd Jul 20252011 AMAQI
23rd Jul 20252012 PMAQI
23rd Jul 2025181 PMAQI
23rd Jul 2025202 PMAQI
23rd Jul 2025203 PMAQI
23rd Jul 2025224 PMAQI
23rd Jul 2025255 PMAQI
23rd Jul 2025286 PMAQI
23rd Jul 2025297 PMAQI
23rd Jul 2025278 PMAQI
23rd Jul 2025229 PMAQI
23rd Jul 20252410 PMAQI
23rd Jul 20252211 PMAQI
24th Jul 20252212 AMAQI
24th Jul 2025241 AMAQI
24th Jul 2025282 AMAQI
24th Jul 2025493 AMAQI
24th Jul 2025534 AMAQI
19°C15/24°C
24th Jul 2025525 AMAQI
24th Jul 2025526 AMAQI
24th Jul 2025467 AMAQI
24th Jul 2025448 AMAQI
24th Jul 2025469 AMAQI
24th Jul 20254710 AMAQI
24th Jul 20254711 AMAQI
24th Jul 20254812 PMAQI
24th Jul 2025451 PMAQI
24th Jul 2025442 PMAQI
24th Jul 2025433 PMAQI
24th Jul 2025414 PMAQI
24th Jul 2025405 PMAQI
24th Jul 2025406 PMAQI
24th Jul 2025407 PMAQI
24th Jul 2025408 PMAQI
24th Jul 2025429 PMAQI
24th Jul 20254310 PMAQI
24th Jul 20254211 PMAQI
25th Jul 20254212 AMAQI
25th Jul 2025421 AMAQI
25th Jul 2025422 AMAQI
25th Jul 2025383 AMAQI
25th Jul 2025354 AMAQI
18°C15/21°C
25th Jul 2025345 AMAQI
25th Jul 2025366 AMAQI
25th Jul 2025317 AMAQI
25th Jul 2025248 AMAQI
25th Jul 2025289 AMAQI
25th Jul 20252610 AMAQI
25th Jul 20252811 AMAQI
25th Jul 20253012 PMAQI
25th Jul 2025401 PMAQI
25th Jul 2025372 PMAQI
25th Jul 2025343 PMAQI
25th Jul 2025364 PMAQI
25th Jul 2025365 PMAQI
25th Jul 2025366 PMAQI
25th Jul 2025387 PMAQI
25th Jul 2025388 PMAQI
25th Jul 2025389 PMAQI
25th Jul 20253810 PMAQI
25th Jul 20253711 PMAQI
26th Jul 20253812 AMAQI
26th Jul 2025431 AMAQI
26th Jul 2025402 AMAQI
26th Jul 2025423 AMAQI
26th Jul 2025434 AMAQI
21°C15/26°C
26th Jul 2025425 AMAQI
26th Jul 2025446 AMAQI
26th Jul 2025407 AMAQI
26th Jul 2025388 AMAQI
26th Jul 2025379 AMAQI
26th Jul 20253610 AMAQI
26th Jul 20253411 AMAQI
26th Jul 20253712 PMAQI
26th Jul 2025351 PMAQI
26th Jul 2025352 PMAQI
26th Jul 2025343 PMAQI
26th Jul 2025324 PMAQI
26th Jul 2025345 PMAQI
26th Jul 2025336 PMAQI
26th Jul 2025317 PMAQI
26th Jul 2025328 PMAQI
26th Jul 2025389 PMAQI
26th Jul 20253710 PMAQI
26th Jul 20253811 PMAQI
27th Jul 20253812 AMAQI
27th Jul 2025381 AMAQI
27th Jul 2025362 AMAQI
27th Jul 2025233 AMAQI
27th Jul 2025194 AMAQI
19°C15/23°C
27th Jul 2025175 AMAQI
27th Jul 2025166 AMAQI
27th Jul 2025167 AMAQI
27th Jul 2025168 AMAQI
27th Jul 2025169 AMAQI
27th Jul 20251610 AMAQI
27th Jul 20251711 AMAQI
27th Jul 20252112 PMAQI
27th Jul 2025231 PMAQI
27th Jul 2025232 PMAQI
27th Jul 2025223 PMAQI
27th Jul 2025224 PMAQI
27th Jul 2025235 PMAQI
27th Jul 2025226 PMAQI
27th Jul 2025227 PMAQI
27th Jul 2025228 PMAQI
27th Jul 2025249 PMAQI
27th Jul 20252410 PMAQI
27th Jul 20252411 PMAQI
28th Jul 20252412 AMAQI
28th Jul 2025241 AMAQI
28th Jul 2025252 AMAQI
28th Jul 2025303 AMAQI
28th Jul 2025304 AMAQI
18°C15/22°C
28th Jul 2025285 AMAQI
28th Jul 2025286 AMAQI
28th Jul 2025277 AMAQI
28th Jul 2025258 AMAQI
28th Jul 2025239 AMAQI
28th Jul 20252410 AMAQI
28th Jul 20252311 AMAQI
28th Jul 20252512 PMAQI
28th Jul 2025241 PMAQI
28th Jul 2025252 PMAQI
28th Jul 2025243 PMAQI
28th Jul 2025234 PMAQI
28th Jul 2025235 PMAQI
28th Jul 2025246 PMAQI
28th Jul 2025247 PMAQI
28th Jul 2025248 PMAQI
28th Jul 2025269 PMAQI
28th Jul 20252710 PMAQI
28th Jul 20252711 PMAQI
29th Jul 20252712 AMAQI
29th Jul 2025291 AMAQI
29th Jul 2025242 AMAQI
29th Jul 2025243 AMAQI
29th Jul 2025224 AMAQI
19°C13/23°C
29th Jul 2025225 AMAQI
29th Jul 2025226 AMAQI
29th Jul 2025277 AMAQI
29th Jul 2025218 AMAQI
29th Jul 2025189 AMAQI
29th Jul 20251810 AMAQI
29th Jul 20251811 AMAQI
29th Jul 20251712 PMAQI
29th Jul 2025201 PMAQI
29th Jul 2025222 PMAQI
29th Jul 2025213 PMAQI
29th Jul 2025224 PMAQI
29th Jul 2025245 PMAQI
29th Jul 2025236 PMAQI
29th Jul 2025267 PMAQI
29th Jul 2025268 PMAQI
29th Jul 2025269 PMAQI
29th Jul 20252610 PMAQI
29th Jul 20252611 PMAQI
30th Jul 20252812 AMAQI
30th Jul 2025261 AMAQI
30th Jul 2025272 AMAQI
30th Jul 2025313 AMAQI
30th Jul 2025324 AMAQI
17°C14/21°C
30th Jul 2025335 AMAQI
30th Jul 2025326 AMAQI
30th Jul 2025337 AMAQI
30th Jul 2025208 AMAQI
30th Jul 2025229 AMAQI
30th Jul 20251810 AMAQI
30th Jul 20252211 AMAQI
30th Jul 20251912 PMAQI
30th Jul 2025221 PMAQI
30th Jul 2025222 PMAQI
30th Jul 2025223 PMAQI
30th Jul 2025224 PMAQI
30th Jul 2025225 PMAQI
30th Jul 2025246 PMAQI
30th Jul 2025247 PMAQI
30th Jul 2025248 PMAQI
30th Jul 2025259 PMAQI
30th Jul 20252510 PMAQI
30th Jul 20252511 PMAQI
31st Jul 20252512 AMAQI
31st Jul 2025251 AMAQI
31st Jul 2025252 AMAQI
31st Jul 2025213 AMAQI
31st Jul 2025214 AMAQI
19°C14/25°C
31st Jul 2025225 AMAQI
31st Jul 2025216 AMAQI
31st Jul 2025207 AMAQI
31st Jul 2025178 AMAQI
31st Jul 2025189 AMAQI
31st Jul 20251710 AMAQI
31st Jul 20251711 AMAQI
31st Jul 20252112 PMAQI
31st Jul 2025211 PMAQI
31st Jul 2025222 PMAQI
31st Jul 2025233 PMAQI
31st Jul 2025234 PMAQI
31st Jul 2025245 PMAQI
31st Jul 2025266 PMAQI
31st Jul 2025257 PMAQI
31st Jul 2025248 PMAQI
31st Jul 2025249 PMAQI
31st Jul 20252410 PMAQI
31st Jul 20252411 PMAQI
1st Aug 20252412 AMAQI
1st Aug 2025211 AMAQI
1st Aug 2025242 AMAQI
1st Aug 2025243 AMAQI
1st Aug 2025194 AMAQI
19°C15/25°C
1st Aug 2025185 AMAQI
1st Aug 2025216 AMAQI
1st Aug 2025197 AMAQI
1st Aug 2025208 AMAQI
1st Aug 2025229 AMAQI
1st Aug 20252210 AMAQI
1st Aug 20252211 AMAQI
1st Aug 20252312 PMAQI
1st Aug 2025241 PMAQI
1st Aug 2025242 PMAQI
1st Aug 2025233 PMAQI
1st Aug 2025204 PMAQI
1st Aug 2025185 PMAQI
1st Aug 2025216 PMAQI
1st Aug 2025237 PMAQI
1st Aug 2025228 PMAQI
1st Aug 2025229 PMAQI
1st Aug 20252210 PMAQI
1st Aug 20252211 PMAQI
2nd Aug 20252312 AMAQI
2nd Aug 2025221 AMAQI
2nd Aug 2025212 AMAQI
2nd Aug 2025223 AMAQI
2nd Aug 2025214 AMAQI
17°C12/21°C
2nd Aug 2025195 AMAQI
2nd Aug 2025206 AMAQI
2nd Aug 2025187 AMAQI
2nd Aug 2025188 AMAQI
2nd Aug 2025189 AMAQI
2nd Aug 20251810 AMAQI
2nd Aug 20251611 AMAQI
2nd Aug 20252012 PMAQI
2nd Aug 2025221 PMAQI
2nd Aug 2025222 PMAQI
2nd Aug 2025223 PMAQI
2nd Aug 2025214 PMAQI
2nd Aug 2025225 PMAQI
2nd Aug 2025216 PMAQI
2nd Aug 2025207 PMAQI
2nd Aug 2025218 PMAQI
2nd Aug 2025229 PMAQI
2nd Aug 20252210 PMAQI
2nd Aug 20252211 PMAQI
3rd Aug 20252112 AMAQI
3rd Aug 2025201 AMAQI
3rd Aug 2025242 AMAQI
3rd Aug 2025263 AMAQI
3rd Aug 2025284 AMAQI
17°C13/23°C
3rd Aug 2025275 AMAQI
3rd Aug 2025326 AMAQI
3rd Aug 2025277 AMAQI
3rd Aug 2025308 AMAQI
3rd Aug 2025269 AMAQI
3rd Aug 20253010 AMAQI
3rd Aug 20252711 AMAQI
3rd Aug 20252312 PMAQI
3rd Aug 2025231 PMAQI
3rd Aug 2025222 PMAQI
3rd Aug 2025223 PMAQI
3rd Aug 2025224 PMAQI
3rd Aug 2025245 PMAQI
3rd Aug 2025236 PMAQI
3rd Aug 2025237 PMAQI
3rd Aug 2025268 PMAQI
3rd Aug 2025279 PMAQI
3rd Aug 20252610 PMAQI
3rd Aug 20252611 PMAQI
4th Aug 20252612 AMAQI
4th Aug 2025261 AMAQI
4th Aug 2025252 AMAQI
4th Aug 2025293 AMAQI
4th Aug 2025244 AMAQI
19°C13/24°C
4th Aug 2025235 AMAQI
4th Aug 2025266 AMAQI
4th Aug 2025277 AMAQI
4th Aug 2025288 AMAQI
4th Aug 2025249 AMAQI
4th Aug 20252810 AMAQI
4th Aug 20252211 AMAQI
4th Aug 20252412 PMAQI
4th Aug 2025231 PMAQI
4th Aug 2025232 PMAQI
4th Aug 2025223 PMAQI
4th Aug 2025224 PMAQI
4th Aug 2025225 PMAQI
4th Aug 2025226 PMAQI
4th Aug 2025257 PMAQI
4th Aug 2025238 PMAQI
4th Aug 2025249 PMAQI
4th Aug 20252410 PMAQI
4th Aug 20252411 PMAQI
5th Aug 20252412 AMAQI
5th Aug 2025281 AMAQI
5th Aug 2025242 AMAQI
5th Aug 2025223 AMAQI
5th Aug 2025224 AMAQI
19°C15/24°C
5th Aug 2025245 AMAQI
5 AM5th Aug 2025246 AMAQI
5th Aug 2025267 AMAQI
5th Aug 2025268 AMAQI
5th Aug 2025269 AMAQI
1 PM
9 PM
1 AM
4 AM
--°C/°C
Day time
Avg. Highest Time
5 AM - 9 PM
24AQI
17 hours / Day
510 hours / Month
Avg. Lowest Time
5 AM - 9 PM
24AQI
17 hours / Day
510 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 5 AM to 9 PM (Avg. 24), while the lowest AQI was between 5 AM to 9 PM (Avg. 24).
Night time
Avg. Highest Time
12 AM - 11 PM
25AQI
7 hours / Day
210 hours / Month
Avg. Lowest Time
12 AM - 11 PM
25AQI
7 hours / Day
210 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 11 PM (Avg. 25), while the lowest AQI was between 12 AM to 11 PM (Avg. 25).
2025 Days Vs Air Quality
Hillingdon Harmondsworth Os, West Drayton, Hillingdon, United Kingdom
2025
77%
166
23%
49
0.4%
1
Total number of days with different AQI categories in last 217 days in 2025 (148 days remaining)
Good
166 DaysModerate
49 DaysPoor
1 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 77%
Health Risk Level:
Low
In 2025, 77% of 217 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
Hillingdon Harmondsworth Os, West Drayton, Hillingdon, 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.
1st January 2025
28AQI
28AQI
2nd January 2025
36AQI
36AQI
3rd January 2025
43AQI
43AQI
4th January 2025
53AQI
53AQI
5th January 2025
25AQI
25AQI
6th January 2025
22AQI
22AQI
7th January 2025
23AQI
23AQI
8th January 2025
36AQI
36AQI
9th January 2025
46AQI
46AQI
10th January 2025
61AQI
61AQI
11th January 2025
82AQI
82AQI
12th January 2025
97AQI
97AQI
13th January 2025
54AQI
54AQI
14th January 2025
50AQI
50AQI
15th January 2025
50AQI
50AQI
16th January 2025
48AQI
48AQI
17th January 2025
55AQI
55AQI
18th January 2025
72AQI
72AQI
19th January 2025
65AQI
65AQI
20th January 2025
62AQI
62AQI
21st January 2025
63AQI
63AQI
22nd January 2025
72AQI
72AQI
23rd January 2025
49AQI
49AQI
24th January 2025
42AQI
42AQI
25th January 2025
38AQI
38AQI
26th January 2025
34AQI
34AQI
27th January 2025
30AQI
30AQI
28th January 2025
26AQI
26AQI
29th January 2025
27AQI
27AQI
30th January 2025
30AQI
30AQI
31st January 2025
31AQI
31AQI
1st February 2025
34AQI
34AQI
2nd February 2025
51AQI
51AQI
3rd February 2025
55AQI
55AQI
4th February 2025
32AQI
32AQI
5th February 2025
41AQI
41AQI
6th February 2025
47AQI
47AQI
7th February 2025
44AQI
44AQI
8th February 2025
65AQI
65AQI
9th February 2025
63AQI
63AQI
10th February 2025
88AQI
88AQI
11th February 2025
76AQI
76AQI
12th February 2025
69AQI
69AQI
13th February 2025
70AQI
70AQI
14th February 2025
63AQI
63AQI
15th February 2025
78AQI
78AQI
16th February 2025
69AQI
69AQI
17th February 2025
66AQI
66AQI
18th February 2025
76AQI
76AQI
19th February 2025
82AQI
82AQI
20th February 2025
40AQI
40AQI
21st February 2025
34AQI
34AQI
22nd February 2025
38AQI
38AQI
23rd February 2025
31AQI
31AQI
24th February 2025
25AQI
25AQI
25th February 2025
30AQI
30AQI
26th February 2025
27AQI
27AQI
27th February 2025
29AQI
29AQI
28th February 2025
49AQI
49AQI
1st March 2025
53AQI
53AQI
2nd March 2025
59AQI
59AQI
3rd March 2025
70AQI
70AQI
4th March 2025
73AQI
73AQI
5th March 2025
90AQI
90AQI
6th March 2025
77AQI
77AQI
7th March 2025
56AQI
56AQI
8th March 2025
59AQI
59AQI
9th March 2025
87AQI
87AQI
10th March 2025
128AQI
128AQI
11th March 2025
63AQI
63AQI
12th March 2025
37AQI
37AQI
13th March 2025
31AQI
31AQI
14th March 2025
39AQI
39AQI
15th March 2025
24AQI
24AQI
16th March 2025
28AQI
28AQI
17th March 2025
30AQI
30AQI
18th March 2025
47AQI
47AQI
19th March 2025
64AQI
64AQI
20th March 2025
57AQI
57AQI
21st March 2025
65AQI
65AQI
22nd March 2025
50AQI
50AQI
23rd March 2025
77AQI
77AQI
24th March 2025
81AQI
81AQI
25th March 2025
70AQI
70AQI
26th March 2025
49AQI
49AQI
27th March 2025
48AQI
48AQI
28th March 2025
31AQI
31AQI
29th March 2025
29AQI
29AQI
30th March 2025
33AQI
33AQI
31st March 2025
36AQI
36AQI
1st April 2025
34AQI
34AQI
2nd April 2025
42AQI
42AQI
3rd April 2025
58AQI
58AQI
4th April 2025
70AQI
70AQI
5th April 2025
43AQI
43AQI
6th April 2025
29AQI
29AQI
7th April 2025
32AQI
32AQI
8th April 2025
47AQI
47AQI
9th April 2025
34AQI
34AQI
10th April 2025
33AQI
33AQI
11th April 2025
49AQI
49AQI
12th April 2025
47AQI
47AQI
13th April 2025
36AQI
36AQI
14th April 2025
29AQI
29AQI
15th April 2025
35AQI
35AQI
16th April 2025
27AQI
27AQI
17th April 2025
23AQI
23AQI
18th April 2025
31AQI
31AQI
19th April 2025
39AQI
39AQI
20th April 2025
29AQI
29AQI
21st April 2025
43AQI
43AQI
22nd April 2025
25AQI
25AQI
23rd April 2025
19AQI
19AQI
24th April 2025
45AQI
45AQI
25th April 2025
39AQI
39AQI
26th April 2025
53AQI
53AQI
27th April 2025
64AQI
64AQI
28th April 2025
44AQI
44AQI
29th April 2025
53AQI
53AQI
30th April 2025
51AQI
51AQI
1st May 2025
60AQI
60AQI
2nd May 2025
53AQI
53AQI
3rd May 2025
47AQI
47AQI
4th May 2025
24AQI
24AQI
5th May 2025
20AQI
20AQI
6th May 2025
22AQI
22AQI
7th May 2025
25AQI
25AQI
8th May 2025
26AQI
26AQI
9th May 2025
29AQI
29AQI
10th May 2025
29AQI
29AQI
11th May 2025
33AQI
33AQI
12th May 2025
30AQI
30AQI
13th May 2025
33AQI
33AQI
14th May 2025
34AQI
34AQI
15th May 2025
34AQI
34AQI
16th May 2025
38AQI
38AQI
17th May 2025
33AQI
33AQI
18th May 2025
41AQI
41AQI
19th May 2025
37AQI
37AQI
20th May 2025
28AQI
28AQI
21st May 2025
26AQI
26AQI
22nd May 2025
34AQI
34AQI
23rd May 2025
29AQI
29AQI
24th May 2025
26AQI
26AQI
25th May 2025
18AQI
18AQI
26th May 2025
21AQI
21AQI
27th May 2025
21AQI
21AQI
28th May 2025
18AQI
18AQI
29th May 2025
19AQI
19AQI
30th May 2025
19AQI
19AQI
31st May 2025
22AQI
22AQI
1st June 2025
22AQI
22AQI
2nd June 2025
20AQI
20AQI
3rd June 2025
20AQI
20AQI
4th June 2025
19AQI
19AQI
5th June 2025
16AQI
16AQI
6th June 2025
16AQI
16AQI
7th June 2025
15AQI
15AQI
8th June 2025
18AQI
18AQI
9th June 2025
43AQI
43AQI
10th June 2025
39AQI
39AQI
11th June 2025
31AQI
31AQI
12th June 2025
39AQI
39AQI
13th June 2025
36AQI
36AQI
14th June 2025
35AQI
35AQI
15th June 2025
27AQI
27AQI
16th June 2025
25AQI
25AQI
17th June 2025
27AQI
27AQI
18th June 2025
31AQI
31AQI
19th June 2025
38AQI
38AQI
20th June 2025
46AQI
46AQI
21st June 2025
41AQI
41AQI
22nd June 2025
38AQI
38AQI
23rd June 2025
22AQI
22AQI
24th June 2025
21AQI
21AQI
25th June 2025
17AQI
17AQI
26th June 2025
17AQI
17AQI
27th June 2025
19AQI
19AQI
28th June 2025
17AQI
17AQI
29th June 2025
18AQI
18AQI
30th June 2025
21AQI
21AQI
1st July 2025
32AQI
32AQI
2nd July 2025
30AQI
30AQI
3rd July 2025
19AQI
19AQI
4th July 2025
20AQI
20AQI
5th July 2025
19AQI
19AQI
6th July 2025
17AQI
17AQI
7th July 2025
17AQI
17AQI
8th July 2025
21AQI
21AQI
9th July 2025
23AQI
23AQI
10th July 2025
21AQI
21AQI
11th July 2025
22AQI
22AQI
12th July 2025
24AQI
24AQI
13th July 2025
25AQI
25AQI
14th July 2025
29AQI
29AQI
15th July 2025
28AQI
28AQI
16th July 2025
26AQI
26AQI
17th July 2025
22AQI
22AQI
18th July 2025
20AQI
20AQI
19th July 2025
21AQI
21AQI
20th July 2025
20AQI
20AQI
21st July 2025
20AQI
20AQI
22nd July 2025
17AQI
17AQI
23rd July 2025
21AQI
21AQI
24th July 2025
42AQI
42AQI
25th July 2025
36AQI
36AQI
26th July 2025
38AQI
38AQI
27th July 2025
23AQI
23AQI
28th July 2025
25AQI
25AQI
29th July 2025
23AQI
23AQI
30th July 2025
25AQI
25AQI
31st July 2025
22AQI
22AQI
1st August 2025
22AQI
22AQI
2nd August 2025
21AQI
21AQI
3rd August 2025
25AQI
25AQI
4th August 2025
25AQI
25AQI
47AQI
53AQI
56AQI
40AQI
30AQI
26AQI
24AQI
23AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202539AQI
20
11
14
14
14
16
1
24
6
29
2
30
31
4
166
49
1
Highest AQI recorded in
March56AQI
Lowest AQI recorded in
August23AQI
202430AQI
26
4
26
3
27
26
4
31
30
31
29
2
26
4
30
1
18
12
31
331
30
Highest AQI recorded in
November47AQI
Lowest AQI recorded in
May24AQI
202329AQI
23
7
24
4
26
5
28
14
1
28
30
29
11
23
3
25
4
261
24
Highest AQI recorded in
January37AQI
Lowest AQI recorded in
August22AQI
202230AQI
29
15
4
20
4
23
17
24
1
23
2
28
28
3
23
5
25
3
257
20
Highest AQI recorded in
February41AQI
Lowest AQI recorded in
January20AQI
202125AQI
30
20
8
24
7
6
4
31
27
30
30
29
28
21
27
303
19
Highest AQI recorded in
March41AQI
Lowest AQI recorded in
December14AQI
202019AQI
13
21
17
27
27
26
27
27
27
3
29
2
241
5
Highest AQI recorded in
November37AQI
Lowest AQI recorded in
June6AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2025(Avg.)
39AQILeast Polluted Year Recorded
2020(Avg.)
19AQIHillingdon Harmondsworth Os's annual 2025 AQI (39) shows an average percentage change of 52.4% (worsened AQI) compared to previous years: 2020 (19), 2021 (25), 2022 (30), 2023 (29), 2024 (30).
