Country Background
HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

Saint Louis, Grand Est, France 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

Saint Louis, Grand Est, France

2022
2023
2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
16th Aug 2025
60AQI
Lowest AQI recorded on
4th Aug 2023
10AQI

Same Day Analysis (13th August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 3rd highest AQI at 26 of Good air quality, showing improvement over 2025 and 2023 on the same day.

Day & Night AQI Trend: 12th Aug - 13th Aug 2026

Saint Louis, Grand Est, France

AQI
Day
Night
.

6 AM12th Aug 2026

9 PM

5 AM13th Aug 2026

Day time
Avg. Highest Time
1PM12th Aug

46AQI

Avg. Lowest Time
3PM12th Aug

23AQI

Night time
Avg. Highest Time
12AM13th Aug

29AQI

Avg. Lowest Time
5AM13th Aug

23AQI

In the last 24 hours,

Saint Louis's AQI reached its highest point of 46 at 1 PM during the Day, while the lowest point, 23, was recorded at 5 AM during the Night between 12th Aug and 13th Aug 2026.

Day & Night AQI Trend : Jul - Aug 2026

Saint Louis, Grand Est, France

JulAug
15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th
Day
Night
15th Jul 2026216 AMAQI
15th Jul 2026207 AMAQI
15th Jul 2026198 AMAQI
15th Jul 2026229 AMAQI
15th Jul 20262410 AMAQI
15th Jul 20262411 AMAQI
15th Jul 20262212 PMAQI
15th Jul 2026251 PMAQI
15th Jul 2026262 PMAQI
15th Jul 2026263 PMAQI
15th Jul 2026244 PMAQI
15th Jul 2026245 PMAQI
15th Jul 2026266 PMAQI
15th Jul 2026307 PMAQI
15th Jul 2026288 PMAQI
15th Jul 2026269 PMAQI
15th Jul 20262810 PMAQI
15th Jul 20262611 PMAQI
16th Jul 20262612 AMAQI
16th Jul 2026261 AMAQI
16th Jul 2026262 AMAQI
16th Jul 2026263 AMAQI
16th Jul 2026264 AMAQI
16th Jul 2026265 AMAQI

23°C16/32°C

16th Jul 2026246 AMAQI
16th Jul 2026227 AMAQI
16th Jul 2026208 AMAQI
16th Jul 2026229 AMAQI
16th Jul 20262410 AMAQI
16th Jul 20262511 AMAQI
16th Jul 20262412 PMAQI
16th Jul 2026281 PMAQI
16th Jul 2026282 PMAQI
16th Jul 2026243 PMAQI
16th Jul 2026264 PMAQI
16th Jul 2026285 PMAQI
16th Jul 2026276 PMAQI
16th Jul 2026267 PMAQI
16th Jul 2026268 PMAQI
16th Jul 2026299 PMAQI
16th Jul 20262410 PMAQI
16th Jul 20262711 PMAQI
17th Jul 20262912 AMAQI
17th Jul 2026221 AMAQI
17th Jul 2026242 AMAQI
17th Jul 2026253 AMAQI
17th Jul 2026224 AMAQI
17th Jul 2026225 AMAQI

24°C15/35°C

17th Jul 2026206 AMAQI
17th Jul 2026227 AMAQI
17th Jul 2026208 AMAQI
17th Jul 2026239 AMAQI
17th Jul 20262110 AMAQI
17th Jul 20262511 AMAQI
17th Jul 20262512 PMAQI
17th Jul 2026251 PMAQI
17th Jul 2026232 PMAQI
17th Jul 2026273 PMAQI
17th Jul 2026274 PMAQI
17th Jul 2026345 PMAQI
17th Jul 2026256 PMAQI
17th Jul 2026297 PMAQI
17th Jul 2026258 PMAQI
17th Jul 2026239 PMAQI
17th Jul 20262510 PMAQI
17th Jul 20262511 PMAQI
18th Jul 20262512 AMAQI
18th Jul 2026231 AMAQI
18th Jul 2026252 AMAQI
18th Jul 2026233 AMAQI
18th Jul 2026234 AMAQI
18th Jul 2026235 AMAQI

22°C16/30°C

18th Jul 2026216 AMAQI
18th Jul 2026237 AMAQI
18th Jul 2026218 AMAQI
18th Jul 2026239 AMAQI
18th Jul 20262510 AMAQI
18th Jul 20262911 AMAQI
18th Jul 20262712 PMAQI
18th Jul 2026231 PMAQI
18th Jul 2026252 PMAQI
18th Jul 2026253 PMAQI
18th Jul 2026324 PMAQI
18th Jul 2026295 PMAQI
18th Jul 2026276 PMAQI
18th Jul 2026277 PMAQI
18th Jul 2026238 PMAQI
18th Jul 2026369 PMAQI
18th Jul 20264610 PMAQI
18th Jul 20264611 PMAQI
19th Jul 20264212 AMAQI
19th Jul 2026451 AMAQI
19th Jul 2026332 AMAQI
19th Jul 2026383 AMAQI
19th Jul 2026404 AMAQI
19th Jul 2026385 AMAQI

21°C14/29°C

19th Jul 2026386 AMAQI
19th Jul 2026387 AMAQI
19th Jul 2026388 AMAQI
19th Jul 2026429 AMAQI
19th Jul 20264210 AMAQI
19th Jul 20263811 AMAQI
19th Jul 20264012 PMAQI
19th Jul 2026421 PMAQI
19th Jul 2026442 PMAQI
19th Jul 2026423 PMAQI
19th Jul 2026404 PMAQI
19th Jul 2026425 PMAQI
19th Jul 2026466 PMAQI
19th Jul 2026527 PMAQI
19th Jul 2026538 PMAQI
19th Jul 2026489 PMAQI
19th Jul 20265110 PMAQI
19th Jul 20262511 PMAQI
20th Jul 20263312 AMAQI
20th Jul 2026331 AMAQI
20th Jul 2026332 AMAQI
20th Jul 2026273 AMAQI
20th Jul 2026254 AMAQI
20th Jul 2026275 AMAQI

19°C13/26°C

20th Jul 2026296 AMAQI
20th Jul 2026277 AMAQI
20th Jul 2026258 AMAQI
20th Jul 2026279 AMAQI
20th Jul 20262510 AMAQI
20th Jul 20262711 AMAQI
20th Jul 20262512 PMAQI
20th Jul 2026251 PMAQI
20th Jul 2026252 PMAQI
20th Jul 2026343 PMAQI
20th Jul 2026314 PMAQI
20th Jul 2026255 PMAQI
20th Jul 2026236 PMAQI
20th Jul 2026237 PMAQI
20th Jul 2026218 PMAQI
20th Jul 2026219 PMAQI
20th Jul 20262110 PMAQI
20th Jul 20262111 PMAQI
21st Jul 20262112 AMAQI
21st Jul 2026231 AMAQI
21st Jul 2026252 AMAQI
21st Jul 2026253 AMAQI
21st Jul 2026234 AMAQI

18°C10/27°C

21st Jul 2026236 AMAQI
21st Jul 2026217 AMAQI
21st Jul 2026218 AMAQI
21st Jul 2026349 AMAQI
21st Jul 20263210 AMAQI
21st Jul 20262111 AMAQI
21st Jul 20263412 PMAQI
21st Jul 2026231 PMAQI
21st Jul 2026252 PMAQI
21st Jul 2026213 PMAQI
21st Jul 2026274 PMAQI
21st Jul 2026255 PMAQI
21st Jul 2026256 PMAQI
21st Jul 2026277 PMAQI
21st Jul 2026258 PMAQI
21st Jul 2026239 PMAQI
21st Jul 20262110 PMAQI
21st Jul 20262311 PMAQI
22nd Jul 20262112 AMAQI
22nd Jul 2026211 AMAQI
22nd Jul 2026212 AMAQI
22nd Jul 2026213 AMAQI
22nd Jul 2026254 AMAQI
22nd Jul 2026215 AMAQI

18°C9/26°C

22nd Jul 2026196 AMAQI
22nd Jul 2026217 AMAQI
22nd Jul 2026218 AMAQI
22nd Jul 2026219 AMAQI
22nd Jul 20262110 AMAQI
22nd Jul 20263611 AMAQI
22nd Jul 20264212 PMAQI
22nd Jul 2026231 PMAQI
22nd Jul 2026232 PMAQI
22nd Jul 2026233 PMAQI
22nd Jul 2026214 PMAQI
22nd Jul 2026215 PMAQI
22nd Jul 2026216 PMAQI
22nd Jul 2026217 PMAQI
22nd Jul 2026218 PMAQI
22nd Jul 2026219 PMAQI
22nd Jul 20262310 PMAQI
22nd Jul 20262511 PMAQI
23rd Jul 20262512 AMAQI
23rd Jul 2026251 AMAQI
23rd Jul 2026252 AMAQI
23rd Jul 2026233 AMAQI
23rd Jul 2026214 AMAQI
23rd Jul 2026215 AMAQI

19°C10/28°C

23rd Jul 2026216 AMAQI
23rd Jul 2026217 AMAQI
23rd Jul 2026218 AMAQI
23rd Jul 2026239 AMAQI
23rd Jul 20262110 AMAQI
23rd Jul 20262111 AMAQI
23rd Jul 20262112 PMAQI
23rd Jul 2026211 PMAQI
23rd Jul 2026212 PMAQI
23rd Jul 2026213 PMAQI
23rd Jul 2026214 PMAQI
23rd Jul 2026215 PMAQI
23rd Jul 2026216 PMAQI
23rd Jul 2026237 PMAQI
23rd Jul 2026238 PMAQI
23rd Jul 2026239 PMAQI
23rd Jul 20262310 PMAQI
23rd Jul 20262111 PMAQI
24th Jul 20262112 AMAQI
24th Jul 2026211 AMAQI
24th Jul 2026232 AMAQI
24th Jul 2026213 AMAQI
24th Jul 2026254 AMAQI
24th Jul 2026235 AMAQI

19°C12/27°C

24th Jul 2026216 AMAQI
24th Jul 2026217 AMAQI
24th Jul 2026238 AMAQI
24th Jul 2026219 AMAQI
24th Jul 20262310 AMAQI
24th Jul 20262511 AMAQI
24th Jul 20262312 PMAQI
24th Jul 2026251 PMAQI
24th Jul 2026252 PMAQI
24th Jul 2026233 PMAQI
24th Jul 2026214 PMAQI
24th Jul 2026255 PMAQI
24th Jul 2026236 PMAQI
24th Jul 2026237 PMAQI
24th Jul 2026218 PMAQI
24th Jul 2026219 PMAQI
24th Jul 20262510 PMAQI
24th Jul 20262111 PMAQI
25th Jul 20262112 AMAQI
25th Jul 2026211 AMAQI
25th Jul 2026212 AMAQI
25th Jul 2026213 AMAQI
25th Jul 2026234 AMAQI
25th Jul 2026235 AMAQI

20°C10/30°C

25th Jul 2026216 AMAQI
25th Jul 2026217 AMAQI
25th Jul 2026218 AMAQI
25th Jul 2026219 AMAQI
25th Jul 20262110 AMAQI
25th Jul 20262111 AMAQI
25th Jul 20262312 PMAQI
25th Jul 2026251 PMAQI
25th Jul 2026232 PMAQI
25th Jul 2026233 PMAQI
25th Jul 2026234 PMAQI
25th Jul 2026235 PMAQI
25th Jul 2026256 PMAQI
25th Jul 2026337 PMAQI
25th Jul 2026368 PMAQI
25th Jul 2026389 PMAQI
25th Jul 20263810 PMAQI
25th Jul 20263611 PMAQI
26th Jul 20264612 AMAQI
26th Jul 2026441 AMAQI
26th Jul 2026422 AMAQI
26th Jul 2026383 AMAQI
26th Jul 2026384 AMAQI
26th Jul 2026295 AMAQI

23°C12/33°C

26th Jul 2026276 AMAQI
26th Jul 2026317 AMAQI
26th Jul 2026388 AMAQI
26th Jul 2026489 AMAQI
26th Jul 20265610 AMAQI
26th Jul 20266411 AMAQI
26th Jul 20267012 PMAQI
26th Jul 2026731 PMAQI
26th Jul 2026722 PMAQI
26th Jul 2026663 PMAQI
26th Jul 2026704 PMAQI
26th Jul 2026585 PMAQI
26th Jul 2026566 PMAQI
26th Jul 2026557 PMAQI
26th Jul 2026628 PMAQI
26th Jul 2026589 PMAQI
26th Jul 20264610 PMAQI
26th Jul 20263411 PMAQI
27th Jul 20262312 AMAQI
27th Jul 2026361 AMAQI
27th Jul 2026472 AMAQI
27th Jul 2026443 AMAQI
27th Jul 2026304 AMAQI
27th Jul 2026325 AMAQI

21°C14/29°C

27th Jul 2026366 AMAQI
27th Jul 2026327 AMAQI
27th Jul 2026328 AMAQI
27th Jul 2026469 AMAQI
27th Jul 20263810 AMAQI
27th Jul 20263811 AMAQI
27th Jul 20263312 PMAQI
27th Jul 2026271 PMAQI
27th Jul 2026292 PMAQI
27th Jul 2026293 PMAQI
27th Jul 2026234 PMAQI
27th Jul 2026255 PMAQI
27th Jul 2026236 PMAQI
27th Jul 2026237 PMAQI
27th Jul 2026278 PMAQI
27th Jul 2026319 PMAQI
27th Jul 20263110 PMAQI
27th Jul 20262311 PMAQI
28th Jul 20262312 AMAQI
28th Jul 2026251 AMAQI
28th Jul 2026212 AMAQI
28th Jul 2026213 AMAQI
28th Jul 2026234 AMAQI
28th Jul 2026215 AMAQI

21°C16/29°C

28th Jul 2026216 AMAQI
28th Jul 2026217 AMAQI
28th Jul 2026238 AMAQI
28th Jul 2026239 AMAQI
28th Jul 20262310 AMAQI
28th Jul 20262511 AMAQI
28th Jul 20262312 PMAQI
28th Jul 2026231 PMAQI
28th Jul 2026232 PMAQI
28th Jul 2026213 PMAQI
28th Jul 2026234 PMAQI
28th Jul 2026215 PMAQI
28th Jul 2026236 PMAQI
28th Jul 2026257 PMAQI
28th Jul 2026238 PMAQI
28th Jul 2026239 PMAQI
28th Jul 20262510 PMAQI
28th Jul 20262511 PMAQI
29th Jul 20262512 AMAQI
29th Jul 2026251 AMAQI
29th Jul 2026252 AMAQI
29th Jul 2026233 AMAQI
29th Jul 2026324 AMAQI
29th Jul 2026335 AMAQI

23°C14/33°C

29th Jul 2026256 AMAQI
29th Jul 2026257 AMAQI
29th Jul 2026258 AMAQI
29th Jul 2026409 AMAQI
29th Jul 20263810 AMAQI
29th Jul 20263811 AMAQI
29th Jul 20263812 PMAQI
29th Jul 2026401 PMAQI
29th Jul 2026382 PMAQI
29th Jul 2026403 PMAQI
29th Jul 2026404 PMAQI
29th Jul 2026465 PMAQI
29th Jul 2026466 PMAQI
29th Jul 2026387 PMAQI
29th Jul 2026368 PMAQI
29th Jul 2026339 PMAQI
29th Jul 20263610 PMAQI
29th Jul 20264611 PMAQI
30th Jul 20264412 AMAQI
30th Jul 2026441 AMAQI
30th Jul 2026462 AMAQI
30th Jul 2026463 AMAQI
30th Jul 2026424 AMAQI
30th Jul 2026445 AMAQI

27°C17/37°C

30th Jul 2026426 AMAQI
30th Jul 2026427 AMAQI
30th Jul 2026448 AMAQI
30th Jul 2026429 AMAQI
30th Jul 20264610 AMAQI
30th Jul 20265111 AMAQI
30th Jul 20265112 PMAQI
30th Jul 2026511 PMAQI
30th Jul 2026512 PMAQI
30th Jul 2026523 PMAQI
30th Jul 2026534 PMAQI
30th Jul 2026565 PMAQI
30th Jul 2026606 PMAQI
30th Jul 2026627 PMAQI
30th Jul 2026598 PMAQI
30th Jul 2026569 PMAQI
30th Jul 20265910 PMAQI
30th Jul 20265911 PMAQI
31st Jul 20266212 AMAQI
31st Jul 2026621 AMAQI
31st Jul 2026642 AMAQI
31st Jul 2026663 AMAQI
31st Jul 2026634 AMAQI
31st Jul 2026605 AMAQI

27°C19/40°C

31st Jul 2026626 AMAQI
31st Jul 2026657 AMAQI
31st Jul 2026668 AMAQI
31st Jul 2026649 AMAQI
31st Jul 20266610 AMAQI
31st Jul 20266611 AMAQI
31st Jul 20266412 PMAQI
31st Jul 2026631 PMAQI
31st Jul 2026582 PMAQI
31st Jul 2026583 PMAQI
31st Jul 2026574 PMAQI
31st Jul 2026585 PMAQI
31st Jul 2026576 PMAQI
31st Jul 2026597 PMAQI
31st Jul 2026568 PMAQI
31st Jul 2026609 PMAQI
31st Jul 20265910 PMAQI
31st Jul 20265611 PMAQI
1st Aug 20265312 AMAQI
1st Aug 2026521 AMAQI
1st Aug 2026462 AMAQI
1st Aug 2026443 AMAQI
1st Aug 2026484 AMAQI
1st Aug 2026425 AMAQI

25°C17/34°C

1st Aug 2026446 AMAQI
1st Aug 2026557 AMAQI
1st Aug 2026538 AMAQI
1st Aug 2026529 AMAQI
1st Aug 20264610 AMAQI
1st Aug 20265211 AMAQI
1st Aug 20265112 PMAQI
1st Aug 2026551 PMAQI
1st Aug 2026482 PMAQI
1st Aug 2026403 PMAQI
1st Aug 2026404 PMAQI
1st Aug 2026365 PMAQI
1st Aug 2026366 PMAQI
1st Aug 2026337 PMAQI
1st Aug 2026368 PMAQI
1st Aug 2026319 PMAQI
1st Aug 20263110 PMAQI
1st Aug 20262911 PMAQI
2nd Aug 20263312 AMAQI
2nd Aug 2026401 AMAQI
2nd Aug 2026362 AMAQI
2nd Aug 2026403 AMAQI
2nd Aug 2026404 AMAQI
2nd Aug 2026425 AMAQI

22°C16/29°C

2nd Aug 2026386 AMAQI
2nd Aug 2026387 AMAQI
2nd Aug 2026388 AMAQI
2nd Aug 2026429 AMAQI
2nd Aug 20264210 AMAQI
2nd Aug 20264211 AMAQI
2nd Aug 20264812 PMAQI
2nd Aug 2026421 PMAQI
2nd Aug 2026462 PMAQI
2nd Aug 2026463 PMAQI
2nd Aug 2026464 PMAQI
2nd Aug 2026445 PMAQI
2nd Aug 2026466 PMAQI
2nd Aug 2026467 PMAQI
2nd Aug 2026448 PMAQI
2nd Aug 2026469 PMAQI
2nd Aug 20264210 PMAQI
2nd Aug 20264211 PMAQI
3rd Aug 20264012 AMAQI
3rd Aug 2026421 AMAQI
3rd Aug 2026402 AMAQI
3rd Aug 2026423 AMAQI
3rd Aug 2026444 AMAQI
3rd Aug 2026465 AMAQI

24°C15/34°C

3rd Aug 2026406 AMAQI
3rd Aug 2026407 AMAQI
3rd Aug 2026428 AMAQI
3rd Aug 2026469 AMAQI
3rd Aug 20264210 AMAQI
3rd Aug 20264011 AMAQI
3rd Aug 20264412 PMAQI
3rd Aug 2026481 PMAQI
3rd Aug 2026502 PMAQI
3rd Aug 2026483 PMAQI
3rd Aug 2026514 PMAQI
3rd Aug 2026445 PMAQI
3rd Aug 2026496 PMAQI
3rd Aug 2026527 PMAQI
3rd Aug 2026428 PMAQI
3rd Aug 2026469 PMAQI
3rd Aug 20264610 PMAQI
3rd Aug 20264811 PMAQI
4th Aug 20264612 AMAQI
4th Aug 2026481 AMAQI
4th Aug 2026402 AMAQI
4th Aug 2026403 AMAQI
4th Aug 2026424 AMAQI
4th Aug 2026465 AMAQI

24°C18/38°C

4th Aug 2026426 AMAQI
4th Aug 2026427 AMAQI
4th Aug 2026408 AMAQI
4th Aug 2026429 AMAQI
4th Aug 20264210 AMAQI
4th Aug 20264211 AMAQI
4th Aug 20264212 PMAQI
4th Aug 2026441 PMAQI
4th Aug 2026442 PMAQI
4th Aug 2026463 PMAQI
4th Aug 2026424 PMAQI
4th Aug 2026505 PMAQI
4th Aug 2026506 PMAQI
4th Aug 2026527 PMAQI
4th Aug 2026488 PMAQI
4th Aug 2026489 PMAQI
4th Aug 20264810 PMAQI
4th Aug 20264411 PMAQI
5th Aug 20264412 AMAQI
5th Aug 2026421 AMAQI
5th Aug 2026292 AMAQI
5th Aug 2026333 AMAQI
5th Aug 2026314 AMAQI
5th Aug 2026315 AMAQI

24°C17/36°C

5th Aug 2026316 AMAQI
5th Aug 2026297 AMAQI
5th Aug 2026298 AMAQI
5th Aug 2026299 AMAQI
5th Aug 20262910 AMAQI
5th Aug 20262711 AMAQI
5th Aug 20262912 PMAQI
5th Aug 2026291 PMAQI
5th Aug 2026312 PMAQI
5th Aug 2026333 PMAQI
5th Aug 2026294 PMAQI
5th Aug 2026255 PMAQI
5th Aug 2026256 PMAQI
5th Aug 2026257 PMAQI
5th Aug 2026258 PMAQI
5th Aug 2026239 PMAQI
5th Aug 20262510 PMAQI
5th Aug 20262311 PMAQI
6th Aug 20262712 AMAQI
6th Aug 2026211 AMAQI
6th Aug 2026252 AMAQI
6th Aug 2026213 AMAQI
6th Aug 2026214 AMAQI
6th Aug 2026215 AMAQI

24°C16/31°C

6th Aug 2026256 AMAQI
6th Aug 2026257 AMAQI
6th Aug 2026278 AMAQI
6th Aug 2026299 AMAQI
6th Aug 20262510 AMAQI
6th Aug 20262111 AMAQI
6th Aug 20262112 PMAQI
6th Aug 2026341 PMAQI
6th Aug 2026482 PMAQI
6th Aug 2026233 PMAQI
6th Aug 2026214 PMAQI
6th Aug 2026215 PMAQI
6th Aug 2026216 PMAQI
6th Aug 2026217 PMAQI
6th Aug 2026218 PMAQI
6th Aug 2026339 PMAQI
6th Aug 20263210 PMAQI
6th Aug 20262311 PMAQI
7th Aug 20262112 AMAQI
7th Aug 2026211 AMAQI
7th Aug 2026212 AMAQI
7th Aug 2026213 AMAQI
7th Aug 2026234 AMAQI
7th Aug 2026255 AMAQI

23°C16/31°C

7th Aug 2026196 AMAQI
7th Aug 2026167 AMAQI
7th Aug 2026308 AMAQI
7th Aug 2026219 AMAQI
7th Aug 20262310 AMAQI
7th Aug 20262311 AMAQI
7th Aug 20262112 PMAQI
7th Aug 2026311 PMAQI
7th Aug 2026402 PMAQI
7th Aug 2026233 PMAQI
7th Aug 2026234 PMAQI
7th Aug 2026255 PMAQI
7th Aug 2026236 PMAQI
7th Aug 2026217 PMAQI
7th Aug 2026218 PMAQI
7th Aug 2026219 PMAQI
7th Aug 20262310 PMAQI
7th Aug 20262111 PMAQI
8th Aug 20262112 AMAQI
8th Aug 2026251 AMAQI
8th Aug 2026232 AMAQI
8th Aug 2026233 AMAQI
8th Aug 2026214 AMAQI
8th Aug 2026215 AMAQI

21°C13/30°C

8th Aug 2026216 AMAQI
8th Aug 2026257 AMAQI
8th Aug 2026218 AMAQI
8th Aug 2026219 AMAQI
8th Aug 20262110 AMAQI
8th Aug 20262111 AMAQI
8th Aug 20262112 PMAQI
8th Aug 2026231 PMAQI
8th Aug 2026212 PMAQI
8th Aug 2026213 PMAQI
8th Aug 2026214 PMAQI
8th Aug 2026215 PMAQI
8th Aug 2026236 PMAQI
8th Aug 2026217 PMAQI
8th Aug 2026238 PMAQI
8th Aug 2026219 PMAQI
8th Aug 20262110 PMAQI
8th Aug 20262111 PMAQI
9th Aug 20262312 AMAQI
9th Aug 2026271 AMAQI
9th Aug 2026362 AMAQI
9th Aug 2026443 AMAQI
9th Aug 2026424 AMAQI
9th Aug 2026255 AMAQI

22°C13/32°C

9th Aug 2026276 AMAQI
9th Aug 2026317 AMAQI
9th Aug 2026278 AMAQI
9th Aug 2026319 AMAQI
9th Aug 20262910 AMAQI
9th Aug 20262911 AMAQI
9th Aug 20262712 PMAQI
9th Aug 2026251 PMAQI
9th Aug 2026272 PMAQI
9th Aug 2026293 PMAQI
9th Aug 2026314 PMAQI
9th Aug 2026275 PMAQI
9th Aug 2026256 PMAQI
9th Aug 2026277 PMAQI
9th Aug 2026238 PMAQI
9th Aug 2026259 PMAQI
9th Aug 20262310 PMAQI
9th Aug 20262511 PMAQI
10th Aug 20262312 AMAQI
10th Aug 2026231 AMAQI
10th Aug 2026252 AMAQI
10th Aug 2026233 AMAQI
10th Aug 2026234 AMAQI
10th Aug 2026255 AMAQI

24°C17/36°C

10th Aug 2026216 AMAQI
10th Aug 2026237 AMAQI
10th Aug 2026258 AMAQI
10th Aug 2026259 AMAQI
10th Aug 20262910 AMAQI
10th Aug 20263211 AMAQI
10th Aug 20264412 PMAQI
10th Aug 2026441 PMAQI
10th Aug 2026342 PMAQI
10th Aug 2026253 PMAQI
10th Aug 2026254 PMAQI
10th Aug 2026405 PMAQI
10th Aug 2026346 PMAQI
10th Aug 2026347 PMAQI
10th Aug 2026448 PMAQI
10th Aug 2026449 PMAQI
10th Aug 20262510 PMAQI
10th Aug 20263111 PMAQI
11th Aug 20264412 AMAQI
11th Aug 2026441 AMAQI
11th Aug 2026442 AMAQI
11th Aug 2026443 AMAQI
11th Aug 2026424 AMAQI
11th Aug 2026445 AMAQI

24°C16/33°C

11th Aug 2026386 AMAQI
11th Aug 2026427 AMAQI
11th Aug 2026428 AMAQI
11th Aug 2026449 AMAQI
11th Aug 20264210 AMAQI
11th Aug 20264411 AMAQI
11th Aug 20264812 PMAQI
11th Aug 2026491 PMAQI
11th Aug 2026492 PMAQI
11th Aug 2026513 PMAQI
11th Aug 2026484 PMAQI
11th Aug 2026445 PMAQI
11th Aug 2026426 PMAQI
11th Aug 2026447 PMAQI
11th Aug 2026468 PMAQI
11th Aug 2026469 PMAQI
11th Aug 20264810 PMAQI
11th Aug 20264411 PMAQI
12th Aug 20264812 AMAQI
12th Aug 2026441 AMAQI
12th Aug 2026442 AMAQI
12th Aug 2026423 AMAQI
12th Aug 2026384 AMAQI
12th Aug 2026425 AMAQI

25°C16/34°C

12th Aug 2026306 AMAQI
12th Aug 2026387 AMAQI
12th Aug 2026428 AMAQI
12th Aug 2026409 AMAQI
12th Aug 20264010 AMAQI
12th Aug 20264211 AMAQI
12th Aug 20264212 PMAQI
12th Aug 2026461 PMAQI
12th Aug 2026252 PMAQI
12th Aug 2026233 PMAQI
12th Aug 2026254 PMAQI
12th Aug 2026255 PMAQI
12th Aug 2026266 PMAQI
12th Aug 2026257 PMAQI
12th Aug 2026258 PMAQI
12th Aug 2026249 PMAQI
12th Aug 20262710 PMAQI
12th Aug 20262811 PMAQI
13th Aug 20262912 AMAQI
13th Aug 2026271 AMAQI
13th Aug 2026252 AMAQI
13th Aug 2026253 AMAQI
13th Aug 2026254 AMAQI
13th Aug 2026235 AMAQI

25°C15/35°C

13th Aug 2026256 AMAQI
6 AM
13th Aug 2026237 AMAQI
13th Aug 2026238 AMAQI
13th Aug 2026239 AMAQI
13th Aug 20262310 AMAQI
13th Aug 20263811 AMAQI
13th Aug 20263312 PMAQI
13th Aug 2026401 PMAQI
1 PM
13th Aug 2026362 PMAQI
13th Aug 2026243 PMAQI
13th Aug 2026224 PMAQI
13th Aug 2026255 PMAQI
13th Aug 2026236 PMAQI
13th Aug 2026277 PMAQI
13th Aug 2026258 PMAQI
13th Aug 2026259 PMAQI
9 PM
13th Aug 20262510 PMAQI
13th Aug 20262111 PMAQI
1 AM
5 AM

26°C16/36°C

Day time
Avg. Highest Time
9 AM - 2 PM

34AQI

6 hours / Day
180 hours / Month
Avg. Lowest Time
6 AM

29AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 9 AM to 2 PM (Avg. 34), while the lowest AQI was between 6 AM to 6 AM (Avg. 29).
Night time
Avg. Highest Time
1 AM

33AQI

1 hours / Day
30 hours / Month
Avg. Lowest Time
4 AM - 5 AM

31AQI

2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 1 AM to 1 AM (Avg. 33), while the lowest AQI was between 4 AM to 5 AM (Avg. 31).

2026 Days Vs Air Quality

Saint Louis, Grand Est, France

2026

87%

193

13%

29

Total number of days with different AQI categories in last 225 days in 2026 (140 days remaining)

Good
193 Days
Moderate
29 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 87%

Health Risk Level:

Low

In 2026, 87% of 225 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

Saint Louis, Grand Est, France

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
93AQI (US)
2nd January 2026
41AQI (US)
3rd January 2026
29AQI (US)
4th January 2026
45AQI (US)
5th January 2026
52AQI (US)
6th January 2026
62AQI (US)
7th January 2026
72AQI (US)
8th January 2026
51AQI (US)
9th January 2026
16AQI (US)
10th January 2026
11AQI (US)
11th January 2026
50AQI (US)
12th January 2026
51AQI (US)
13th January 2026
43AQI (US)
14th January 2026
42AQI (US)
15th January 2026
48AQI (US)
16th January 2026
55AQI (US)
17th January 2026
68AQI (US)
18th January 2026
72AQI (US)
19th January 2026
61AQI (US)
20th January 2026
63AQI (US)
21st January 2026
62AQI (US)
22nd January 2026
63AQI (US)
23rd January 2026
71AQI (US)
24th January 2026
65AQI (US)
25th January 2026
75AQI (US)
26th January 2026
75AQI (US)
27th January 2026
25AQI (US)
28th January 2026
34AQI (US)
29th January 2026
32AQI (US)
30th January 2026
37AQI (US)
31st January 2026
39AQI (US)
1st February 2026
47AQI (US)
2nd February 2026
53AQI (US)
3rd February 2026
47AQI (US)
4th February 2026
34AQI (US)
5th February 2026
53AQI (US)
6th February 2026
45AQI (US)
7th February 2026
15AQI (US)
8th February 2026
32AQI (US)
9th February 2026
47AQI (US)
10th February 2026
39AQI (US)
11th February 2026
20AQI (US)
12th February 2026
23AQI (US)
13th February 2026
39AQI (US)
14th February 2026
42AQI (US)
15th February 2026
35AQI (US)
16th February 2026
35AQI (US)
17th February 2026
39AQI (US)
18th February 2026
37AQI (US)
19th February 2026
36AQI (US)
20th February 2026
28AQI (US)
21st February 2026
20AQI (US)
22nd February 2026
22AQI (US)
23rd February 2026
32AQI (US)
24th February 2026
26AQI (US)
25th February 2026
33AQI (US)
26th February 2026
32AQI (US)
27th February 2026
35AQI (US)
28th February 2026
33AQI (US)
1st March 2026
33AQI (US)
2nd March 2026
47AQI (US)
3rd March 2026
45AQI (US)
4th March 2026
43AQI (US)
5th March 2026
55AQI (US)
6th March 2026
57AQI (US)
7th March 2026
71AQI (US)
8th March 2026
84AQI (US)
9th March 2026
66AQI (US)
10th March 2026
46AQI (US)
11th March 2026
20AQI (US)
12th March 2026
19AQI (US)
13th March 2026
38AQI (US)
14th March 2026
34AQI (US)
15th March 2026
28AQI (US)
16th March 2026
35AQI (US)
17th March 2026
31AQI (US)
18th March 2026
29AQI (US)
19th March 2026
67AQI (US)
20th March 2026
59AQI (US)
21st March 2026
44AQI (US)
22nd March 2026
42AQI (US)
23rd March 2026
43AQI (US)
24th March 2026
36AQI (US)
25th March 2026
35AQI (US)
26th March 2026
10AQI (US)
27th March 2026
17AQI (US)
28th March 2026
28AQI (US)
29th March 2026
25AQI (US)
30th March 2026
21AQI (US)
31st March 2026
28AQI (US)
1st April 2026
30AQI (US)
2nd April 2026
27AQI (US)
3rd April 2026
27AQI (US)
4th April 2026
23AQI (US)
5th April 2026
28AQI (US)
6th April 2026
24AQI (US)
7th April 2026
27AQI (US)
8th April 2026
26AQI (US)
9th April 2026
26AQI (US)
10th April 2026
28AQI (US)
11th April 2026
35AQI (US)
12th April 2026
27AQI (US)
13th April 2026
17AQI (US)
14th April 2026
21AQI (US)
15th April 2026
39AQI (US)
16th April 2026
32AQI (US)
17th April 2026
18th April 2026
26AQI (US)
19th April 2026
26AQI (US)
20th April 2026
22AQI (US)
21st April 2026
21AQI (US)
22nd April 2026
23rd April 2026
21AQI (US)
24th April 2026
21AQI (US)
25th April 2026
26AQI (US)
26th April 2026
24AQI (US)
27th April 2026
26AQI (US)
28th April 2026
22AQI (US)
29th April 2026
21AQI (US)
30th April 2026
21AQI (US)
1st May 2026
25AQI (US)
2nd May 2026
23AQI (US)
3rd May 2026
20AQI (US)
4th May 2026
24AQI (US)
5th May 2026
29AQI (US)
6th May 2026
26AQI (US)
7th May 2026
20AQI (US)
8th May 2026
24AQI (US)
9th May 2026
10th May 2026
27AQI (US)
11th May 2026
24AQI (US)
12th May 2026
19AQI (US)
13th May 2026
22AQI (US)
14th May 2026
20AQI (US)
15th May 2026
26AQI (US)
16th May 2026
36AQI (US)
17th May 2026
37AQI (US)
18th May 2026
33AQI (US)
19th May 2026
33AQI (US)
20th May 2026
33AQI (US)
21st May 2026
34AQI (US)
22nd May 2026
36AQI (US)
23rd May 2026
38AQI (US)
24th May 2026
51AQI (US)
25th May 2026
42AQI (US)
26th May 2026
34AQI (US)
27th May 2026
28AQI (US)
28th May 2026
27AQI (US)
29th May 2026
27AQI (US)
30th May 2026
25AQI (US)
31st May 2026
26AQI (US)
1st June 2026
26AQI (US)
2nd June 2026
27AQI (US)
3rd June 2026
21AQI (US)
4th June 2026
20AQI (US)
5th June 2026
20AQI (US)
6th June 2026
22AQI (US)
7th June 2026
21AQI (US)
8th June 2026
22AQI (US)
9th June 2026
22AQI (US)
10th June 2026
22AQI (US)
11th June 2026
21AQI (US)
12th June 2026
22AQI (US)
13th June 2026
23AQI (US)
14th June 2026
22AQI (US)
15th June 2026
22AQI (US)
16th June 2026
25AQI (US)
17th June 2026
26AQI (US)
18th June 2026
25AQI (US)
19th June 2026
24AQI (US)
20th June 2026
23AQI (US)
21st June 2026
21AQI (US)
22nd June 2026
22AQI (US)
23rd June 2026
24AQI (US)
24th June 2026
23AQI (US)
25th June 2026
26AQI (US)
26th June 2026
30AQI (US)
27th June 2026
29AQI (US)
28th June 2026
26AQI (US)
29th June 2026
35AQI (US)
30th June 2026
23AQI (US)
1st July 2026
24AQI (US)
2nd July 2026
19AQI (US)
3rd July 2026
24AQI (US)
4th July 2026
23AQI (US)
5th July 2026
21AQI (US)
6th July 2026
21AQI (US)
7th July 2026
21AQI (US)
8th July 2026
25AQI (US)
9th July 2026
25AQI (US)
10th July 2026
28AQI (US)
11th July 2026
28AQI (US)
12th July 2026
24AQI (US)
13th July 2026
25AQI (US)
14th July 2026
28AQI (US)
15th July 2026
25AQI (US)
16th July 2026
25AQI (US)
17th July 2026
24AQI (US)
18th July 2026
27AQI (US)
19th July 2026
42AQI (US)
20th July 2026
26AQI (US)
21st July 2026
25AQI (US)
22nd July 2026
23AQI (US)
23rd July 2026
22AQI (US)
24th July 2026
23AQI (US)
25th July 2026
25AQI (US)
26th July 2026
51AQI (US)
27th July 2026
32AQI (US)
28th July 2026
23AQI (US)
29th July 2026
35AQI (US)
30th July 2026
50AQI (US)
31st July 2026
61AQI (US)
1st August 2026
44AQI (US)
2nd August 2026
42AQI (US)
3rd August 2026
45AQI (US)
4th August 2026
45AQI (US)
5th August 2026
29AQI (US)
6th August 2026
25AQI (US)
7th August 2026
23AQI (US)
8th August 2026
22AQI (US)
9th August 2026
29AQI (US)
10th August 2026
30AQI (US)
11th August 2026
45AQI (US)
12th August 2026
35AQI (US)
13th August 2026
26AQI (US)
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

52AQI (US)

35AQI (US)

40AQI (US)

26AQI (US)

29AQI (US)

24AQI (US)

28AQI (US)

34AQI (US)

No. of days

Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days

202633AQI (US)

14
17
26
2
24
7
28
29
1
30
29
2
13
193
29

Highest AQI (US) recorded in

January

52AQI (US)

Lowest AQI (US) recorded in

June

24AQI (US)

202543AQI (US)

17
14
8
20
14
17
30
31
24
6
31
25
6
29
1
12
19
9
21
3
28
233
132

Highest AQI (US) recorded in

December

63AQI (US)

Lowest AQI (US) recorded in

September

22AQI (US)

202434AQI (US)

13
16
24
5
18
4
11
29
2
30
31
29
1
28
2
31
24
6
19
12
287
48

Highest AQI (US) recorded in

January

51AQI (US)

Lowest AQI (US) recorded in

September

24AQI (US)

202337AQI (US)

3
1
14
10
4
23
7
1
29
1
25
3
17
12
1
25
3
25
3
25
5
25
6
27
2
14
17
252
70
6

Highest AQI (US) recorded in

February

55AQI (US)

Lowest AQI (US) recorded in

November

22AQI (US)

202242AQI (US)

14
15
1
17
4
3
25
3
11
6
24
7
23
7
17
4
2
28
28
3
2
169
71
4

Highest AQI (US) recorded in

March

75AQI (US)

Lowest AQI (US) recorded in

November

23AQI (US)

202140AQI (US)

27
3
19
8
19
12
27
2
29
1
19
11
25
6
28
3
16
14
16
15
13
15
2
21
10
259
100
2

Highest AQI (US) recorded in

November

58AQI (US)

Lowest AQI (US) recorded in

May

24AQI (US)

202032AQI (US)

10
3
20
1
16
2
30
30
1
30
1
29
1
30
17
13
30
1
242
23

Highest AQI (US) recorded in

November

47AQI (US)

Lowest AQI (US) recorded in

October

22AQI (US)

Most & Least Polluted Years Over the Last 7 Years

Most Polluted Year Recorded
2025(Avg.)
43AQI (US)
Least Polluted Year Recorded
2020(Avg.)
32AQI (US)

Saint Louis's annual 2026 AQI (US) (33) shows an average percentage change of -12.1% (improved AQI (US)) compared to previous years: 2020 (32), 2021 (40), 2022 (42), 2023 (37), 2024 (34), 2025 (43).