Herstal, Liege, Wallonia, Belgium 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
Herstal, Liege, Wallonia, Belgium
2022
2023
2024
2025
2026
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
17th Aug 2023
62AQILowest AQI recorded on
17th Aug 2024
6AQISame Day Analysis (7th August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 1st highest AQI at 27 of Good air quality on the same day.
Day & Night AQI Trend: 6th Aug - 7th Aug 2026
Herstal, Liege, Wallonia, Belgium
AQI
Day
Night
.
5 AM6th Aug 2026
9 PM
4 AM7th Aug 2026
Day time
Avg. Highest Time
8PM6th Aug
33AQI
Avg. Lowest Time
6AM6th Aug
16AQI
Night time
Avg. Highest Time
12AM7th Aug
42AQI
Avg. Lowest Time
5AM6th Aug
10AQI
In the last 24 hours,
Herstal's AQI reached its highest point of 42 at 12 AM during the Night, while the lowest point, 10, was recorded at 5 AM during the Night between 6th Aug and 7th Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Herstal, Liege, Wallonia, Belgium
JulAug
09th - 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
9th Jul 2026195 AMAQI
9th Jul 2026186 AMAQI
9th Jul 2026227 AMAQI
9th Jul 2026268 AMAQI
9th Jul 2026269 AMAQI
9th Jul 20262410 AMAQI
9th Jul 20262611 AMAQI
9th Jul 20262612 PMAQI
9th Jul 2026221 PMAQI
9th Jul 2026202 PMAQI
9th Jul 2026253 PMAQI
9th Jul 2026284 PMAQI
9th Jul 2026265 PMAQI
9th Jul 2026286 PMAQI
9th Jul 2026247 PMAQI
9th Jul 2026248 PMAQI
9th Jul 2026179 PMAQI
9th Jul 20261910 PMAQI
9th Jul 20261111 PMAQI
10th Jul 20262112 AMAQI
10th Jul 2026301 AMAQI
10th Jul 2026282 AMAQI
10th Jul 2026283 AMAQI
10th Jul 2026294 AMAQI
21°C13/29°C
10th Jul 2026285 AMAQI
10th Jul 2026266 AMAQI
10th Jul 2026247 AMAQI
10th Jul 2026248 AMAQI
10th Jul 2026269 AMAQI
10th Jul 20263110 AMAQI
10th Jul 20262911 AMAQI
10th Jul 20263012 PMAQI
10th Jul 2026221 PMAQI
10th Jul 2026242 PMAQI
10th Jul 2026243 PMAQI
10th Jul 2026184 PMAQI
10th Jul 2026245 PMAQI
10th Jul 2026256 PMAQI
10th Jul 2026247 PMAQI
10th Jul 2026328 PMAQI
10th Jul 2026289 PMAQI
10th Jul 20263110 PMAQI
10th Jul 20263011 PMAQI
11th Jul 20263012 AMAQI
11th Jul 2026321 AMAQI
11th Jul 2026322 AMAQI
11th Jul 2026323 AMAQI
11th Jul 2026284 AMAQI
23°C14/31°C
11th Jul 2026285 AMAQI
11th Jul 2026266 AMAQI
11th Jul 2026257 AMAQI
11th Jul 2026248 AMAQI
11th Jul 2026269 AMAQI
11th Jul 20263010 AMAQI
11th Jul 20262611 AMAQI
11th Jul 20261812 PMAQI
11th Jul 2026171 PMAQI
11th Jul 202692 PMAQI
11th Jul 2026103 PMAQI
11th Jul 2026104 PMAQI
11th Jul 2026205 PMAQI
11th Jul 2026146 PMAQI
11th Jul 2026177 PMAQI
11th Jul 2026228 PMAQI
11th Jul 2026229 PMAQI
11th Jul 20262010 PMAQI
11th Jul 20261811 PMAQI
12th Jul 20261012 AMAQI
12th Jul 2026201 AMAQI
12th Jul 2026252 AMAQI
12th Jul 2026303 AMAQI
12th Jul 2026194 AMAQI
24°C14/32°C
12th Jul 2026145 AMAQI
12th Jul 2026226 AMAQI
12th Jul 2026227 AMAQI
12th Jul 2026158 AMAQI
12th Jul 2026179 AMAQI
12th Jul 20262010 AMAQI
12th Jul 2026611 AMAQI
12th Jul 20261212 PMAQI
12th Jul 2026171 PMAQI
12th Jul 2026102 PMAQI
12th Jul 2026123 PMAQI
12th Jul 2026134 PMAQI
12th Jul 2026175 PMAQI
12th Jul 2026176 PMAQI
12th Jul 2026177 PMAQI
12th Jul 2026198 PMAQI
12th Jul 2026149 PMAQI
12th Jul 20262510 PMAQI
12th Jul 20261911 PMAQI
13th Jul 20261412 AMAQI
13th Jul 2026151 AMAQI
13th Jul 2026212 AMAQI
13th Jul 2026183 AMAQI
13th Jul 202694 AMAQI
25°C15/33°C
13th Jul 2026165 AMAQI
13th Jul 2026206 AMAQI
13th Jul 2026217 AMAQI
13th Jul 2026218 AMAQI
13th Jul 2026249 AMAQI
13th Jul 20263110 AMAQI
13th Jul 20263011 AMAQI
13th Jul 20263112 PMAQI
13th Jul 2026341 PMAQI
13th Jul 2026322 PMAQI
13th Jul 2026343 PMAQI
13th Jul 2026324 PMAQI
13th Jul 2026305 PMAQI
13th Jul 2026326 PMAQI
13th Jul 2026347 PMAQI
13th Jul 2026308 PMAQI
13th Jul 2026289 PMAQI
13th Jul 20263010 PMAQI
13th Jul 20263011 PMAQI
14th Jul 20263012 AMAQI
14th Jul 2026291 AMAQI
14th Jul 2026322 AMAQI
14th Jul 2026323 AMAQI
14th Jul 2026274 AMAQI
24°C14/33°C
14th Jul 2026245 AMAQI
14th Jul 2026206 AMAQI
14th Jul 2026227 AMAQI
14th Jul 2026208 AMAQI
14th Jul 2026249 AMAQI
14th Jul 20263210 AMAQI
14th Jul 20263111 AMAQI
14th Jul 20263012 PMAQI
14th Jul 2026331 PMAQI
14th Jul 2026302 PMAQI
14th Jul 2026323 PMAQI
14th Jul 2026344 PMAQI
14th Jul 2026315 PMAQI
14th Jul 2026306 PMAQI
14th Jul 2026317 PMAQI
14th Jul 2026308 PMAQI
14th Jul 2026189 PMAQI
14th Jul 20262010 PMAQI
14th Jul 20261911 PMAQI
15th Jul 20261412 AMAQI
15th Jul 2026161 AMAQI
15th Jul 2026292 AMAQI
15th Jul 2026283 AMAQI
15th Jul 2026254 AMAQI
25°C17/33°C
15th Jul 2026165 AMAQI
15th Jul 2026206 AMAQI
15th Jul 2026187 AMAQI
15th Jul 2026178 AMAQI
15th Jul 2026149 AMAQI
15th Jul 20262010 AMAQI
15th Jul 20261911 AMAQI
15th Jul 20261912 PMAQI
15th Jul 2026211 PMAQI
15th Jul 2026202 PMAQI
15th Jul 2026233 PMAQI
15th Jul 2026254 PMAQI
15th Jul 2026225 PMAQI
15th Jul 2026196 PMAQI
15th Jul 2026197 PMAQI
15th Jul 2026188 PMAQI
15th Jul 2026179 PMAQI
15th Jul 20261710 PMAQI
15th Jul 20261811 PMAQI
16th Jul 20262012 AMAQI
16th Jul 2026201 AMAQI
16th Jul 2026212 AMAQI
16th Jul 2026233 AMAQI
16th Jul 2026224 AMAQI
24°C15/31°C
16th Jul 2026205 AMAQI
16th Jul 2026196 AMAQI
16th Jul 2026197 AMAQI
16th Jul 2026208 AMAQI
16th Jul 2026229 AMAQI
16th Jul 20262510 AMAQI
16th Jul 20262511 AMAQI
16th Jul 20262512 PMAQI
16th Jul 2026241 PMAQI
16th Jul 2026282 PMAQI
16th Jul 2026303 PMAQI
16th Jul 2026284 PMAQI
16th Jul 2026265 PMAQI
16th Jul 2026226 PMAQI
16th Jul 2026207 PMAQI
16th Jul 2026208 PMAQI
16th Jul 2026209 PMAQI
16th Jul 20262110 PMAQI
16th Jul 20262711 PMAQI
17th Jul 20262112 AMAQI
17th Jul 2026191 AMAQI
17th Jul 2026202 AMAQI
17th Jul 2026183 AMAQI
17th Jul 2026204 AMAQI
24°C15/32°C
17th Jul 2026145 AMAQI
17th Jul 2026206 AMAQI
17th Jul 2026187 AMAQI
17th Jul 2026208 AMAQI
17th Jul 2026349 AMAQI
17th Jul 20263210 AMAQI
17th Jul 20264211 AMAQI
17th Jul 20264212 PMAQI
17th Jul 2026381 PMAQI
17th Jul 2026362 PMAQI
17th Jul 2026313 PMAQI
17th Jul 2026294 PMAQI
17th Jul 2026335 PMAQI
17th Jul 2026316 PMAQI
17th Jul 2026367 PMAQI
17th Jul 2026348 PMAQI
17th Jul 2026319 PMAQI
17th Jul 20262910 PMAQI
17th Jul 20262911 PMAQI
18th Jul 20262912 AMAQI
18th Jul 2026331 AMAQI
18th Jul 2026332 AMAQI
18th Jul 2026333 AMAQI
18th Jul 2026384 AMAQI
22°C14/30°C
18th Jul 2026405 AMAQI
18th Jul 2026406 AMAQI
18th Jul 2026427 AMAQI
18th Jul 2026448 AMAQI
18th Jul 2026469 AMAQI
18th Jul 20264610 AMAQI
18th Jul 20264611 AMAQI
18th Jul 20264812 PMAQI
18th Jul 2026481 PMAQI
18th Jul 2026442 PMAQI
18th Jul 2026403 PMAQI
18th Jul 2026464 PMAQI
18th Jul 2026445 PMAQI
18th Jul 2026496 PMAQI
18th Jul 2026517 PMAQI
18th Jul 2026538 PMAQI
18th Jul 2026499 PMAQI
18th Jul 20264210 PMAQI
18th Jul 20264011 PMAQI
19th Jul 20262712 AMAQI
19th Jul 2026211 AMAQI
19th Jul 2026342 AMAQI
19th Jul 2026503 AMAQI
19th Jul 2026254 AMAQI
18°C11/24°C
19th Jul 2026255 AMAQI
19th Jul 2026216 AMAQI
19th Jul 2026257 AMAQI
19th Jul 2026218 AMAQI
19th Jul 2026219 AMAQI
19th Jul 20262110 AMAQI
19th Jul 20262311 AMAQI
19th Jul 20262312 PMAQI
19th Jul 2026211 PMAQI
19th Jul 2026252 PMAQI
19th Jul 2026233 PMAQI
19th Jul 2026234 PMAQI
19th Jul 2026235 PMAQI
19th Jul 2026216 PMAQI
19th Jul 2026237 PMAQI
19th Jul 2026258 PMAQI
19th Jul 2026259 PMAQI
19th Jul 20262510 PMAQI
19th Jul 20262911 PMAQI
20th Jul 20262912 AMAQI
20th Jul 2026251 AMAQI
20th Jul 2026252 AMAQI
20th Jul 2026253 AMAQI
20th Jul 2026234 AMAQI
17°C9/23°C
20th Jul 2026215 AMAQI
20th Jul 2026276 AMAQI
20th Jul 2026257 AMAQI
20th Jul 2026218 AMAQI
20th Jul 2026219 AMAQI
20th Jul 20262110 AMAQI
20th Jul 20262111 AMAQI
20th Jul 20262112 PMAQI
20th Jul 2026211 PMAQI
20th Jul 2026252 PMAQI
20th Jul 2026273 PMAQI
20th Jul 2026254 PMAQI
20th Jul 2026235 PMAQI
20th Jul 2026216 PMAQI
20th Jul 2026307 PMAQI
20th Jul 2026218 PMAQI
20th Jul 2026239 PMAQI
20th Jul 20262110 PMAQI
20th Jul 20263211 PMAQI
21st Jul 20263112 AMAQI
21st Jul 2026231 AMAQI
21st Jul 2026212 AMAQI
21st Jul 2026213 AMAQI
21st Jul 2026214 AMAQI
15°C6/23°C
21st Jul 2026256 AMAQI
21st Jul 2026257 AMAQI
21st Jul 2026258 AMAQI
21st Jul 2026259 AMAQI
21st Jul 20263210 AMAQI
21st Jul 20263611 AMAQI
21st Jul 20264012 PMAQI
21st Jul 2026291 PMAQI
21st Jul 2026252 PMAQI
21st Jul 2026273 PMAQI
21st Jul 2026274 PMAQI
21st Jul 2026255 PMAQI
21st Jul 2026296 PMAQI
21st Jul 2026297 PMAQI
21st Jul 2026258 PMAQI
21st Jul 2026339 PMAQI
21st Jul 20263310 PMAQI
21st Jul 20263111 PMAQI
22nd Jul 20262912 AMAQI
22nd Jul 2026311 AMAQI
22nd Jul 2026332 AMAQI
22nd Jul 2026323 AMAQI
22nd Jul 2026254 AMAQI
17°C8/26°C
22nd Jul 202685 AMAQI
22nd Jul 202686 AMAQI
22nd Jul 2026257 AMAQI
22nd Jul 2026278 AMAQI
22nd Jul 2026279 AMAQI
22nd Jul 20262910 AMAQI
22nd Jul 20263111 AMAQI
22nd Jul 20262112 PMAQI
22nd Jul 2026211 PMAQI
22nd Jul 2026232 PMAQI
22nd Jul 2026233 PMAQI
22nd Jul 2026254 PMAQI
22nd Jul 2026295 PMAQI
22nd Jul 2026236 PMAQI
22nd Jul 2026237 PMAQI
22nd Jul 2026218 PMAQI
22nd Jul 2026219 PMAQI
22nd Jul 20262110 PMAQI
22nd Jul 20262111 PMAQI
23rd Jul 20262112 AMAQI
23rd Jul 2026211 AMAQI
23rd Jul 2026212 AMAQI
23rd Jul 2026233 AMAQI
23rd Jul 2026254 AMAQI
16°C9/24°C
23rd Jul 2026255 AMAQI
23rd Jul 2026276 AMAQI
23rd Jul 2026237 AMAQI
23rd Jul 2026238 AMAQI
23rd Jul 2026219 AMAQI
23rd Jul 20262110 AMAQI
23rd Jul 20262111 AMAQI
23rd Jul 20263612 PMAQI
23rd Jul 2026381 PMAQI
23rd Jul 2026312 PMAQI
23rd Jul 2026293 PMAQI
23rd Jul 2026344 PMAQI
23rd Jul 2026405 PMAQI
23rd Jul 2026366 PMAQI
23rd Jul 2026387 PMAQI
23rd Jul 2026248 PMAQI
23rd Jul 2026189 PMAQI
23rd Jul 20262510 PMAQI
23rd Jul 20261611 PMAQI
24th Jul 20261612 AMAQI
24th Jul 2026161 AMAQI
24th Jul 2026292 AMAQI
24th Jul 2026273 AMAQI
24th Jul 2026274 AMAQI
17°C9/25°C
24th Jul 2026255 AMAQI
24th Jul 2026256 AMAQI
24th Jul 2026237 AMAQI
24th Jul 2026218 AMAQI
24th Jul 2026239 AMAQI
24th Jul 20262710 AMAQI
24th Jul 20262711 AMAQI
24th Jul 20262512 PMAQI
24th Jul 2026251 PMAQI
24th Jul 2026362 PMAQI
24th Jul 2026313 PMAQI
24th Jul 2026254 PMAQI
24th Jul 2026325 PMAQI
24th Jul 2026386 PMAQI
24th Jul 2026257 PMAQI
24th Jul 2026238 PMAQI
24th Jul 2026339 PMAQI
24th Jul 20262110 PMAQI
24th Jul 20262311 PMAQI
25th Jul 20262712 AMAQI
25th Jul 2026251 AMAQI
25th Jul 2026252 AMAQI
25th Jul 2026253 AMAQI
25th Jul 2026254 AMAQI
18°C9/27°C
25th Jul 2026255 AMAQI
25th Jul 2026256 AMAQI
25th Jul 2026487 AMAQI
25th Jul 2026368 AMAQI
25th Jul 2026259 AMAQI
25th Jul 20262510 AMAQI
25th Jul 20262511 AMAQI
25th Jul 20263212 PMAQI
25th Jul 2026271 PMAQI
25th Jul 2026272 PMAQI
25th Jul 2026333 PMAQI
25th Jul 2026254 PMAQI
25th Jul 2026275 PMAQI
25th Jul 2026336 PMAQI
25th Jul 2026347 PMAQI
25th Jul 2026258 PMAQI
25th Jul 2026239 PMAQI
25th Jul 20262910 PMAQI
25th Jul 20263311 PMAQI
26th Jul 20264012 AMAQI
26th Jul 2026421 AMAQI
26th Jul 2026402 AMAQI
26th Jul 2026383 AMAQI
26th Jul 2026404 AMAQI
22°C14/31°C
26th Jul 2026405 AMAQI
26th Jul 2026256 AMAQI
26th Jul 2026257 AMAQI
26th Jul 2026258 AMAQI
26th Jul 2026219 AMAQI
26th Jul 20262310 AMAQI
26th Jul 20262311 AMAQI
26th Jul 20262312 PMAQI
26th Jul 2026241 PMAQI
26th Jul 2026232 PMAQI
26th Jul 2026253 PMAQI
26th Jul 2026254 PMAQI
26th Jul 2026255 PMAQI
26th Jul 2026256 PMAQI
26th Jul 2026227 PMAQI
26th Jul 2026198 PMAQI
26th Jul 2026259 PMAQI
26th Jul 20262510 PMAQI
26th Jul 20262311 PMAQI
27th Jul 20261912 AMAQI
27th Jul 2026211 AMAQI
27th Jul 2026212 AMAQI
27th Jul 2026213 AMAQI
27th Jul 2026234 AMAQI
18°C12/22°C
27th Jul 2026255 AMAQI
27th Jul 2026256 AMAQI
27th Jul 2026257 AMAQI
27th Jul 2026298 AMAQI
27th Jul 2026319 AMAQI
27th Jul 20263110 AMAQI
27th Jul 20262511 AMAQI
27th Jul 20262712 PMAQI
27th Jul 2026251 PMAQI
27th Jul 2026232 PMAQI
27th Jul 2026233 PMAQI
27th Jul 2026254 PMAQI
27th Jul 2026335 PMAQI
27th Jul 2026296 PMAQI
27th Jul 2026277 PMAQI
27th Jul 2026278 PMAQI
27th Jul 2026199 PMAQI
27th Jul 20261410 PMAQI
27th Jul 20262111 PMAQI
28th Jul 20261212 AMAQI
28th Jul 2026161 AMAQI
28th Jul 2026192 AMAQI
28th Jul 2026213 AMAQI
28th Jul 2026214 AMAQI
18°C11/26°C
28th Jul 2026295 AMAQI
28th Jul 2026776 AMAQI
28th Jul 2026527 AMAQI
28th Jul 2026318 AMAQI
28th Jul 2026299 AMAQI
28th Jul 20263410 AMAQI
28th Jul 20262111 AMAQI
28th Jul 20262112 PMAQI
28th Jul 2026231 PMAQI
28th Jul 2026322 PMAQI
28th Jul 2026333 PMAQI
28th Jul 202684 PMAQI
28th Jul 2026185 PMAQI
28th Jul 2026256 PMAQI
28th Jul 2026257 PMAQI
28th Jul 2026218 PMAQI
28th Jul 202689 PMAQI
28th Jul 20262710 PMAQI
28th Jul 20262311 PMAQI
29th Jul 20262112 AMAQI
29th Jul 2026361 AMAQI
29th Jul 2026472 AMAQI
29th Jul 2026313 AMAQI
29th Jul 2026254 AMAQI
22°C13/31°C
29th Jul 2026235 AMAQI
29th Jul 2026256 AMAQI
29th Jul 2026337 AMAQI
29th Jul 2026468 AMAQI
29th Jul 2026559 AMAQI
29th Jul 20264810 AMAQI
29th Jul 20264211 AMAQI
29th Jul 20262512 PMAQI
29th Jul 2026231 PMAQI
29th Jul 2026272 PMAQI
29th Jul 2026273 PMAQI
29th Jul 2026334 PMAQI
29th Jul 2026405 PMAQI
29th Jul 2026426 PMAQI
29th Jul 2026367 PMAQI
29th Jul 2026208 PMAQI
29th Jul 2026219 PMAQI
29th Jul 20262510 PMAQI
29th Jul 20262711 PMAQI
30th Jul 20262912 AMAQI
30th Jul 2026231 AMAQI
30th Jul 2026232 AMAQI
30th Jul 2026213 AMAQI
30th Jul 2026254 AMAQI
27°C18/37°C
30th Jul 2026215 AMAQI
30th Jul 2026256 AMAQI
30th Jul 2026557 AMAQI
30th Jul 2026498 AMAQI
30th Jul 2026539 AMAQI
30th Jul 20263310 AMAQI
30th Jul 20263611 AMAQI
30th Jul 20262712 PMAQI
30th Jul 2026291 PMAQI
30th Jul 2026282 PMAQI
30th Jul 2026293 PMAQI
30th Jul 2026284 PMAQI
30th Jul 2026295 PMAQI
30th Jul 2026336 PMAQI
30th Jul 2026337 PMAQI
30th Jul 2026338 PMAQI
30th Jul 2026339 PMAQI
30th Jul 20263310 PMAQI
30th Jul 20263311 PMAQI
31st Jul 20263812 AMAQI
31st Jul 2026421 AMAQI
31st Jul 2026442 AMAQI
31st Jul 2026443 AMAQI
31st Jul 2026424 AMAQI
24°C19/33°C
31st Jul 2026465 AMAQI
31st Jul 2026466 AMAQI
31st Jul 2026467 AMAQI
31st Jul 2026518 AMAQI
31st Jul 2026509 AMAQI
31st Jul 20264910 AMAQI
31st Jul 20265211 AMAQI
31st Jul 20265012 PMAQI
31st Jul 2026481 PMAQI
31st Jul 2026422 PMAQI
31st Jul 2026383 PMAQI
31st Jul 2026384 PMAQI
31st Jul 2026275 PMAQI
31st Jul 2026276 PMAQI
31st Jul 2026317 PMAQI
31st Jul 2026298 PMAQI
31st Jul 2026259 PMAQI
31st Jul 20262310 PMAQI
31st Jul 20263111 PMAQI
1st Aug 20262712 AMAQI
1st Aug 2026271 AMAQI
1st Aug 2026292 AMAQI
1st Aug 2026253 AMAQI
1st Aug 2026234 AMAQI
23°C16/31°C
1st Aug 2026235 AMAQI
1st Aug 2026216 AMAQI
1st Aug 2026217 AMAQI
1st Aug 2026218 AMAQI
1st Aug 2026219 AMAQI
1st Aug 20262110 AMAQI
1st Aug 20262111 AMAQI
1st Aug 20261812 PMAQI
1st Aug 2026231 PMAQI
1st Aug 2026362 PMAQI
1st Aug 2026383 PMAQI
1st Aug 2026424 PMAQI
1st Aug 2026335 PMAQI
1st Aug 2026296 PMAQI
1st Aug 2026277 PMAQI
1st Aug 2026368 PMAQI
1st Aug 2026339 PMAQI
1st Aug 20263310 PMAQI
1st Aug 20263411 PMAQI
2nd Aug 20262712 AMAQI
2nd Aug 2026311 AMAQI
2nd Aug 2026382 AMAQI
2nd Aug 2026333 AMAQI
2nd Aug 2026294 AMAQI
20°C14/27°C
2nd Aug 2026255 AMAQI
2nd Aug 2026256 AMAQI
2nd Aug 2026217 AMAQI
2nd Aug 2026258 AMAQI
2nd Aug 2026239 AMAQI
2nd Aug 20262110 AMAQI
2nd Aug 20262511 AMAQI
2nd Aug 20263212 PMAQI
2nd Aug 2026271 PMAQI
2nd Aug 2026322 PMAQI
2nd Aug 2026253 PMAQI
2nd Aug 2026274 PMAQI
2nd Aug 2026255 PMAQI
2nd Aug 2026276 PMAQI
2nd Aug 2026257 PMAQI
2nd Aug 2026258 PMAQI
2nd Aug 2026219 PMAQI
2nd Aug 20262110 PMAQI
2nd Aug 20262311 PMAQI
3rd Aug 20262312 AMAQI
3rd Aug 2026251 AMAQI
3rd Aug 2026252 AMAQI
3rd Aug 2026253 AMAQI
3rd Aug 2026254 AMAQI
23°C14/32°C
3rd Aug 2026255 AMAQI
3rd Aug 2026256 AMAQI
3rd Aug 2026257 AMAQI
3rd Aug 2026258 AMAQI
3rd Aug 2026389 AMAQI
3rd Aug 20263110 AMAQI
3rd Aug 20262811 AMAQI
3rd Aug 20262412 PMAQI
3rd Aug 2026241 PMAQI
3rd Aug 2026332 PMAQI
3rd Aug 2026253 PMAQI
3rd Aug 2026444 PMAQI
3rd Aug 2026485 PMAQI
3rd Aug 2026256 PMAQI
3rd Aug 2026297 PMAQI
3rd Aug 2026318 PMAQI
3rd Aug 2026409 PMAQI
3rd Aug 20263810 PMAQI
3rd Aug 20263611 PMAQI
4th Aug 20263412 AMAQI
4th Aug 2026331 AMAQI
4th Aug 2026332 AMAQI
4th Aug 2026383 AMAQI
4th Aug 2026364 AMAQI
27°C20/37°C
4th Aug 2026545 AMAQI
4th Aug 2026366 AMAQI
4th Aug 2026257 AMAQI
4th Aug 2026258 AMAQI
4th Aug 2026279 AMAQI
4th Aug 20262910 AMAQI
4th Aug 20262911 AMAQI
4th Aug 20263112 PMAQI
4th Aug 2026231 PMAQI
4th Aug 2026212 PMAQI
4th Aug 2026293 PMAQI
4th Aug 2026234 PMAQI
4th Aug 2026255 PMAQI
4th Aug 2026256 PMAQI
4th Aug 2026257 PMAQI
4th Aug 2026258 PMAQI
4th Aug 2026239 PMAQI
4th Aug 20262110 PMAQI
4th Aug 20262511 PMAQI
5th Aug 20262512 AMAQI
5th Aug 2026231 AMAQI
5th Aug 2026232 AMAQI
5th Aug 2026253 AMAQI
5th Aug 2026234 AMAQI
24°C18/33°C
5th Aug 2026255 AMAQI
5th Aug 2026256 AMAQI
5th Aug 2026257 AMAQI
5th Aug 2026218 AMAQI
5th Aug 2026299 AMAQI
5th Aug 20263310 AMAQI
5th Aug 20262111 AMAQI
5th Aug 20262512 PMAQI
5th Aug 2026251 PMAQI
5th Aug 2026222 PMAQI
5th Aug 2026223 PMAQI
5th Aug 2026254 PMAQI
5th Aug 2026225 PMAQI
5th Aug 2026226 PMAQI
5th Aug 2026187 PMAQI
5th Aug 2026168 PMAQI
5th Aug 2026169 PMAQI
5th Aug 20261810 PMAQI
5th Aug 20261611 PMAQI
6th Aug 2026912 AMAQI
6th Aug 2026121 AMAQI
6th Aug 2026142 AMAQI
6th Aug 2026133 AMAQI
6th Aug 2026104 AMAQI
23°C17/30°C
6th Aug 2026105 AMAQI
6th Aug 2026166 AMAQI
6th Aug 2026217 AMAQI
6th Aug 2026218 AMAQI
6th Aug 2026239 AMAQI
6th Aug 20262510 AMAQI
6th Aug 20262911 AMAQI
6th Aug 20262512 PMAQI
6th Aug 2026251 PMAQI
6th Aug 2026252 PMAQI
6th Aug 2026233 PMAQI
6th Aug 2026254 PMAQI
6th Aug 2026275 PMAQI
6th Aug 2026296 PMAQI
6th Aug 2026297 PMAQI
6th Aug 2026338 PMAQI
6th Aug 2026339 PMAQI
6th Aug 20263210 PMAQI
6th Aug 20262211 PMAQI
7th Aug 20264212 AMAQI
7th Aug 2026241 AMAQI
7th Aug 2026252 AMAQI
7th Aug 2026273 AMAQI
7th Aug 2026334 AMAQI
18°C11/26°C
7th Aug 2026465 AMAQI
5 AM7th Aug 2026386 AMAQI
7th Aug 2026257 AMAQI
7th Aug 2026298 AMAQI
7th Aug 2026299 AMAQI
7th Aug 20262910 AMAQI
7th Aug 20263111 AMAQI
7th Aug 20262712 PMAQI
7th Aug 2026271 PMAQI
1 PM7th Aug 2026212 PMAQI
7th Aug 2026273 PMAQI
7th Aug 2026114 PMAQI
7th Aug 2026295 PMAQI
7th Aug 2026256 PMAQI
7th Aug 2026297 PMAQI
7th Aug 2026278 PMAQI
7th Aug 2026129 PMAQI
9 PM7th Aug 20261510 PMAQI
7th Aug 20262511 PMAQI
1 AM
4 AM
17°C9/25°C
Day time
Avg. Highest Time
10 AM
29AQI
1 hours / Day
30 hours / Month
Avg. Lowest Time
9 PM
24AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 10 AM to 10 AM (Avg. 29), while the lowest AQI was between 9 PM to 9 PM (Avg. 24).
Night time
Avg. Highest Time
2 AM - 3 AM
28AQI
2 hours / Day
60 hours / Month
Avg. Lowest Time
12 AM
24AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 2 AM to 3 AM (Avg. 28), while the lowest AQI was between 12 AM to 12 AM (Avg. 24).
2026 Days Vs Air Quality
Herstal, Liege, Wallonia, Belgium
2026
91%
197
8%
18
0.4%
1
Total number of days with different AQI categories in last 219 days in 2026 (146 days remaining)
Good
197 DaysModerate
18 DaysPoor
1 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 91%
Health Risk Level:
Very Low
In 2026, 91% of 219 days were within WHO’s safe air quality limits. The risk of health issues is Very Low, but health impacts are still unclear.
Annual Air Quality Insights
Herstal, Liege, Wallonia, Belgium
AQI levels in 2026
AQI (US)
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 2026
-1th undefined 2026
-1th undefined 2026
-1th undefined 2026
1st January 2026
19AQI (US)
19AQI (US)
2nd January 2026
8AQI (US)
8AQI (US)
3rd January 2026
13AQI (US)
13AQI (US)
4th January 2026
21AQI (US)
21AQI (US)
5th January 2026
23AQI (US)
23AQI (US)
6th January 2026
44AQI (US)
44AQI (US)
7th January 2026
20AQI (US)
20AQI (US)
8th January 2026
23AQI (US)
23AQI (US)
9th January 2026
9AQI (US)
9AQI (US)
10th January 2026
48AQI (US)
48AQI (US)
11th January 2026
61AQI (US)
61AQI (US)
12th January 2026
12AQI (US)
12AQI (US)
13th January 2026
12AQI (US)
12AQI (US)
14th January 2026
16AQI (US)
16AQI (US)
15th January 2026
13AQI (US)
13AQI (US)
16th January 2026
14AQI (US)
14AQI (US)
17th January 2026
20AQI (US)
20AQI (US)
18th January 2026
53AQI (US)
53AQI (US)
19th January 2026
42AQI (US)
42AQI (US)
20th January 2026
39AQI (US)
39AQI (US)
21st January 2026
28AQI (US)
28AQI (US)
22nd January 2026
37AQI (US)
37AQI (US)
23rd January 2026
44AQI (US)
44AQI (US)
24th January 2026
40AQI (US)
40AQI (US)
25th January 2026
77AQI (US)
77AQI (US)
26th January 2026
105AQI (US)
105AQI (US)
27th January 2026
51AQI (US)
51AQI (US)
28th January 2026
31AQI (US)
31AQI (US)
29th January 2026
63AQI (US)
63AQI (US)
30th January 2026
41AQI (US)
41AQI (US)
31st January 2026
12AQI (US)
12AQI (US)
1st February 2026
34AQI (US)
34AQI (US)
2nd February 2026
47AQI (US)
47AQI (US)
3rd February 2026
42AQI (US)
42AQI (US)
4th February 2026
18AQI (US)
18AQI (US)
5th February 2026
46AQI (US)
46AQI (US)
6th February 2026
36AQI (US)
36AQI (US)
7th February 2026
19AQI (US)
19AQI (US)
8th February 2026
41AQI (US)
41AQI (US)
9th February 2026
44AQI (US)
44AQI (US)
10th February 2026
27AQI (US)
27AQI (US)
11th February 2026
20AQI (US)
20AQI (US)
12th February 2026
27AQI (US)
27AQI (US)
13th February 2026
39AQI (US)
39AQI (US)
14th February 2026
41AQI (US)
41AQI (US)
15th February 2026
38AQI (US)
38AQI (US)
16th February 2026
11AQI (US)
11AQI (US)
17th February 2026
33AQI (US)
33AQI (US)
18th February 2026
40AQI (US)
40AQI (US)
19th February 2026
19AQI (US)
19AQI (US)
20th February 2026
38AQI (US)
38AQI (US)
21st February 2026
29AQI (US)
29AQI (US)
22nd February 2026
20AQI (US)
20AQI (US)
23rd February 2026
27AQI (US)
27AQI (US)
24th February 2026
27AQI (US)
27AQI (US)
25th February 2026
25AQI (US)
25AQI (US)
26th February 2026
32AQI (US)
32AQI (US)
27th February 2026
32AQI (US)
32AQI (US)
28th February 2026
11AQI (US)
11AQI (US)
1st March 2026
24AQI (US)
24AQI (US)
2nd March 2026
42AQI (US)
42AQI (US)
3rd March 2026
37AQI (US)
37AQI (US)
4th March 2026
58AQI (US)
58AQI (US)
5th March 2026
50AQI (US)
50AQI (US)
6th March 2026
52AQI (US)
52AQI (US)
7th March 2026
70AQI (US)
70AQI (US)
8th March 2026
89AQI (US)
89AQI (US)
9th March 2026
65AQI (US)
65AQI (US)
10th March 2026
36AQI (US)
36AQI (US)
11th March 2026
10AQI (US)
10AQI (US)
12th March 2026
26AQI (US)
26AQI (US)
13th March 2026
12AQI (US)
12AQI (US)
14th March 2026
24AQI (US)
24AQI (US)
15th March 2026
30AQI (US)
30AQI (US)
16th March 2026
18AQI (US)
18AQI (US)
17th March 2026
24AQI (US)
24AQI (US)
18th March 2026
29AQI (US)
29AQI (US)
19th March 2026
60AQI (US)
60AQI (US)
20th March 2026
86AQI (US)
86AQI (US)
21st March 2026
60AQI (US)
60AQI (US)
22nd March 2026
60AQI (US)
60AQI (US)
23rd March 2026
68AQI (US)
68AQI (US)
24th March 2026
74AQI (US)
74AQI (US)
25th March 2026
22AQI (US)
22AQI (US)
26th March 2026
10AQI (US)
10AQI (US)
27th March 2026
24AQI (US)
24AQI (US)
28th March 2026
27AQI (US)
27AQI (US)
29th March 2026
21AQI (US)
21AQI (US)
30th March 2026
21AQI (US)
21AQI (US)
31st March 2026
28AQI (US)
28AQI (US)
1st April 2026
29AQI (US)
29AQI (US)
2nd April 2026
23AQI (US)
23AQI (US)
3rd April 2026
23AQI (US)
23AQI (US)
4th April 2026
18AQI (US)
18AQI (US)
5th April 2026
24AQI (US)
24AQI (US)
6th April 2026
24AQI (US)
24AQI (US)
7th April 2026
28AQI (US)
28AQI (US)
8th April 2026
25AQI (US)
25AQI (US)
9th April 2026
24AQI (US)
24AQI (US)
10th April 2026
19AQI (US)
19AQI (US)
11th April 2026
32AQI (US)
32AQI (US)
12th April 2026
24AQI (US)
24AQI (US)
13th April 2026
28AQI (US)
28AQI (US)
14th April 2026
53AQI (US)
53AQI (US)
15th April 2026
37AQI (US)
37AQI (US)
16th April 2026
11AQI (US)
11AQI (US)
17th April 2026
18th April 2026
27AQI (US)
27AQI (US)
19th April 2026
18AQI (US)
18AQI (US)
20th April 2026
19AQI (US)
19AQI (US)
21st April 2026
23AQI (US)
23AQI (US)
22nd April 2026
23rd April 2026
22AQI (US)
22AQI (US)
24th April 2026
23AQI (US)
23AQI (US)
25th April 2026
28AQI (US)
28AQI (US)
26th April 2026
25AQI (US)
25AQI (US)
27th April 2026
27AQI (US)
27AQI (US)
28th April 2026
24AQI (US)
24AQI (US)
29th April 2026
20AQI (US)
20AQI (US)
30th April 2026
19AQI (US)
19AQI (US)
1st May 2026
17AQI (US)
17AQI (US)
2nd May 2026
22AQI (US)
22AQI (US)
3rd May 2026
21AQI (US)
21AQI (US)
4th May 2026
25AQI (US)
25AQI (US)
5th May 2026
26AQI (US)
26AQI (US)
6th May 2026
24AQI (US)
24AQI (US)
7th May 2026
24AQI (US)
24AQI (US)
8th May 2026
25AQI (US)
25AQI (US)
9th May 2026
10th May 2026
45AQI (US)
45AQI (US)
11th May 2026
11AQI (US)
11AQI (US)
12th May 2026
15AQI (US)
15AQI (US)
13th May 2026
17AQI (US)
17AQI (US)
14th May 2026
17AQI (US)
17AQI (US)
15th May 2026
28AQI (US)
28AQI (US)
16th May 2026
35AQI (US)
35AQI (US)
17th May 2026
35AQI (US)
35AQI (US)
18th May 2026
34AQI (US)
34AQI (US)
19th May 2026
30AQI (US)
30AQI (US)
20th May 2026
31AQI (US)
31AQI (US)
21st May 2026
29AQI (US)
29AQI (US)
22nd May 2026
34AQI (US)
34AQI (US)
23rd May 2026
35AQI (US)
35AQI (US)
24th May 2026
49AQI (US)
49AQI (US)
25th May 2026
38AQI (US)
38AQI (US)
26th May 2026
24AQI (US)
24AQI (US)
27th May 2026
26AQI (US)
26AQI (US)
28th May 2026
24AQI (US)
24AQI (US)
29th May 2026
27AQI (US)
27AQI (US)
30th May 2026
53AQI (US)
53AQI (US)
31st May 2026
39AQI (US)
39AQI (US)
1st June 2026
24AQI (US)
24AQI (US)
2nd June 2026
11AQI (US)
11AQI (US)
3rd June 2026
11AQI (US)
11AQI (US)
4th June 2026
12AQI (US)
12AQI (US)
5th June 2026
14AQI (US)
14AQI (US)
6th June 2026
19AQI (US)
19AQI (US)
7th June 2026
15AQI (US)
15AQI (US)
8th June 2026
21AQI (US)
21AQI (US)
9th June 2026
12AQI (US)
12AQI (US)
10th June 2026
12AQI (US)
12AQI (US)
11th June 2026
12AQI (US)
12AQI (US)
12th June 2026
12AQI (US)
12AQI (US)
13th June 2026
14AQI (US)
14AQI (US)
14th June 2026
20AQI (US)
20AQI (US)
15th June 2026
19AQI (US)
19AQI (US)
16th June 2026
26AQI (US)
26AQI (US)
17th June 2026
19AQI (US)
19AQI (US)
18th June 2026
12AQI (US)
12AQI (US)
19th June 2026
21AQI (US)
21AQI (US)
20th June 2026
22AQI (US)
22AQI (US)
21st June 2026
20AQI (US)
20AQI (US)
22nd June 2026
21AQI (US)
21AQI (US)
23rd June 2026
22AQI (US)
22AQI (US)
24th June 2026
24AQI (US)
24AQI (US)
25th June 2026
31AQI (US)
31AQI (US)
26th June 2026
42AQI (US)
42AQI (US)
27th June 2026
29AQI (US)
29AQI (US)
28th June 2026
21AQI (US)
21AQI (US)
29th June 2026
12AQI (US)
12AQI (US)
30th June 2026
18AQI (US)
18AQI (US)
1st July 2026
20AQI (US)
20AQI (US)
2nd July 2026
16AQI (US)
16AQI (US)
3rd July 2026
12AQI (US)
12AQI (US)
4th July 2026
14AQI (US)
14AQI (US)
5th July 2026
12AQI (US)
12AQI (US)
6th July 2026
11AQI (US)
11AQI (US)
7th July 2026
9AQI (US)
9AQI (US)
8th July 2026
14AQI (US)
14AQI (US)
9th July 2026
21AQI (US)
21AQI (US)
10th July 2026
26AQI (US)
26AQI (US)
11th July 2026
22AQI (US)
22AQI (US)
12th July 2026
17AQI (US)
17AQI (US)
13th July 2026
26AQI (US)
26AQI (US)
14th July 2026
28AQI (US)
28AQI (US)
15th July 2026
20AQI (US)
20AQI (US)
16th July 2026
23AQI (US)
23AQI (US)
17th July 2026
28AQI (US)
28AQI (US)
18th July 2026
43AQI (US)
43AQI (US)
19th July 2026
25AQI (US)
25AQI (US)
20th July 2026
24AQI (US)
24AQI (US)
21st July 2026
28AQI (US)
28AQI (US)
22nd July 2026
24AQI (US)
24AQI (US)
23rd July 2026
27AQI (US)
27AQI (US)
24th July 2026
26AQI (US)
26AQI (US)
25th July 2026
28AQI (US)
28AQI (US)
26th July 2026
28AQI (US)
28AQI (US)
27th July 2026
25AQI (US)
25AQI (US)
28th July 2026
26AQI (US)
26AQI (US)
29th July 2026
32AQI (US)
32AQI (US)
30th July 2026
32AQI (US)
32AQI (US)
31st July 2026
40AQI (US)
40AQI (US)
1st August 2026
28AQI (US)
28AQI (US)
2nd August 2026
26AQI (US)
26AQI (US)
3rd August 2026
30AQI (US)
30AQI (US)
4th August 2026
29AQI (US)
29AQI (US)
5th August 2026
23AQI (US)
23AQI (US)
6th August 2026
22AQI (US)
22AQI (US)
7th August 2026
27AQI (US)
27AQI (US)
8th August 2026
9th August 2026
10th August 2026
11th August 2026
12th August 2026
13th August 2026
14th August 2026
15th August 2026
16th August 2026
17th August 2026
18th August 2026
19th August 2026
20th August 2026
21st August 2026
22nd August 2026
23rd August 2026
24th August 2026
25th August 2026
26th August 2026
27th August 2026
28th August 2026
29th August 2026
30th August 2026
31st August 2026
1st September 2026
2nd September 2026
3rd September 2026
4th September 2026
5th September 2026
6th September 2026
7th September 2026
8th September 2026
9th September 2026
10th September 2026
11th September 2026
12th September 2026
13th September 2026
14th September 2026
15th September 2026
16th September 2026
17th September 2026
18th September 2026
19th September 2026
20th September 2026
21st September 2026
22nd September 2026
23rd September 2026
24th September 2026
25th September 2026
26th September 2026
27th September 2026
28th September 2026
29th September 2026
30th September 2026
1st October 2026
2nd October 2026
3rd October 2026
4th October 2026
5th October 2026
6th October 2026
7th October 2026
8th October 2026
9th October 2026
10th October 2026
11th October 2026
12th October 2026
13th October 2026
14th October 2026
15th October 2026
16th October 2026
17th October 2026
18th October 2026
19th October 2026
20th October 2026
21st October 2026
22nd October 2026
23rd October 2026
24th October 2026
25th October 2026
26th October 2026
27th October 2026
28th October 2026
29th October 2026
30th October 2026
31st October 2026
1st November 2026
2nd November 2026
3rd November 2026
4th November 2026
5th November 2026
6th November 2026
7th November 2026
8th November 2026
9th November 2026
10th November 2026
11th November 2026
12th November 2026
13th November 2026
14th November 2026
15th November 2026
16th November 2026
17th November 2026
18th November 2026
19th November 2026
20th November 2026
21st November 2026
22nd November 2026
23rd November 2026
24th November 2026
25th November 2026
26th November 2026
27th November 2026
28th November 2026
29th November 2026
30th November 2026
1st December 2026
2nd December 2026
3rd December 2026
4th December 2026
5th December 2026
6th December 2026
7th December 2026
8th December 2026
9th December 2026
10th December 2026
11th December 2026
12th December 2026
13th December 2026
14th December 2026
15th December 2026
16th December 2026
17th December 2026
18th December 2026
19th December 2026
20th December 2026
21st December 2026
22nd December 2026
23rd December 2026
24th December 2026
25th December 2026
26th December 2026
27th December 2026
28th December 2026
29th December 2026
30th December 2026
31st December 2026
34AQI (US)
31AQI (US)
41AQI (US)
25AQI (US)
29AQI (US)
19AQI (US)
23AQI (US)
26AQI (US)
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202629AQI (US)
25
5
1
28
20
11
27
1
29
1
30
31
7
197
18
1
Highest AQI (US) recorded in
March41AQI (US)
Lowest AQI (US) recorded in
June19AQI (US)
202535AQI (US)
19
12
11
16
1
14
16
1
26
4
30
1
30
31
29
2
30
24
7
27
3
20
11
291
72
2
Highest AQI (US) recorded in
February55AQI (US)
Lowest AQI (US) recorded in
September21AQI (US)
202429AQI (US)
24
6
1
27
2
26
5
29
1
24
7
26
4
31
29
2
24
6
31
26
4
24
7
321
44
1
Highest AQI (US) recorded in
January37AQI (US)
Lowest AQI (US) recorded in
April16AQI (US)
202331AQI (US)
3
26
5
22
8
23
8
18
12
30
1
29
2
27
3
31
28
1
28
3
265
43
Highest AQI (US) recorded in
June46AQI (US)
Lowest AQI (US) recorded in
November16AQI (US)
202231AQI (US)
16
14
20
1
5
25
1
27
3
25
6
29
22
1
28
29
2
4
206
51
1
Highest AQI (US) recorded in
March66AQI (US)
Lowest AQI (US) recorded in
November7AQI (US)
202137AQI (US)
20
9
20
8
20
11
20
10
30
1
22
8
31
26
3
24
6
29
2
18
12
23
8
283
78
Highest AQI (US) recorded in
March48AQI (US)
Lowest AQI (US) recorded in
October25AQI (US)
202035AQI (US)
7
4
2
11
10
17
1
24
6
31
27
4
28
2
28
3
19
11
25
5
217
46
2
Highest AQI (US) recorded in
March56AQI (US)
Lowest AQI (US) recorded in
July25AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Most Polluted Year Recorded
2021(Avg.)
37AQI (US)Least Polluted Year Recorded
2024(Avg.)
29AQI (US)Herstal's annual 2026 AQI (US) (29) shows an average percentage change of -11.4% (improved AQI (US)) compared to previous years: 2020 (35), 2021 (37), 2022 (31), 2023 (31), 2024 (29), 2025 (35).
