Sion Airport A9, Sion, Valais, Switzerland 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
Sion Airport A9, Sion, Valais, Switzerland
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
24th Aug 2023
47AQILowest AQI recorded on
7th Aug 2021
17AQISame Day Analysis (1st August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 32 of Good air quality, showing improvement over 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 1st Aug - 2nd Aug 2025
Sion Airport A9, Sion, Valais, Switzerland
AQI
Day
Night
.
5 AM1st Aug 2025
9 PM
4 AM2nd Aug 2025
Day time
Avg. Highest Time
9AM1st Aug
62AQI
Avg. Lowest Time
6AM1st Aug
22AQI
Night time
Avg. Highest Time
3AM2nd Aug
30AQI
Avg. Lowest Time
5AM1st Aug
25AQI
In the last 24 hours,
Sion Airport A9's AQI reached its highest point of 62 at 9 AM during the Day, while the lowest point, 22, was recorded at 6 AM during the Day between 1st Aug and 2nd Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Sion Airport A9, Sion, Valais, Switzerland
JulAug
03rd - 04th04th - 05th05th - 06th06th - 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
Day
Night
3rd Jul 2025325 AMAQI
3rd Jul 2025326 AMAQI
3rd Jul 2025327 AMAQI
3rd Jul 2025328 AMAQI
3rd Jul 2025329 AMAQI
3rd Jul 20253210 AMAQI
3rd Jul 20253411 AMAQI
3rd Jul 20254212 PMAQI
3rd Jul 2025301 PMAQI
3rd Jul 2025462 PMAQI
3rd Jul 2025403 PMAQI
3rd Jul 2025434 PMAQI
3rd Jul 2025425 PMAQI
3rd Jul 2025446 PMAQI
3rd Jul 2025447 PMAQI
3rd Jul 2025448 PMAQI
3rd Jul 2025419 PMAQI
3rd Jul 20253810 PMAQI
3rd Jul 20254011 PMAQI
4th Jul 20253812 AMAQI
4th Jul 2025381 AMAQI
4th Jul 2025502 AMAQI
4th Jul 2025533 AMAQI
4th Jul 2025534 AMAQI
17°C11/23°C
4th Jul 2025525 AMAQI
4th Jul 2025526 AMAQI
4th Jul 2025547 AMAQI
4th Jul 2025538 AMAQI
4th Jul 2025539 AMAQI
4th Jul 20255510 AMAQI
4th Jul 20256511 AMAQI
4th Jul 20255412 PMAQI
4th Jul 2025521 PMAQI
4th Jul 2025542 PMAQI
4th Jul 2025533 PMAQI
4th Jul 2025524 PMAQI
4th Jul 2025525 PMAQI
4th Jul 2025526 PMAQI
4th Jul 2025527 PMAQI
4th Jul 2025508 PMAQI
4th Jul 2025499 PMAQI
4th Jul 20254810 PMAQI
4th Jul 20254811 PMAQI
5th Jul 20254812 AMAQI
5th Jul 2025511 AMAQI
5th Jul 2025512 AMAQI
5th Jul 2025493 AMAQI
5th Jul 2025464 AMAQI
16°C11/22°C
5th Jul 2025465 AMAQI
5th Jul 2025506 AMAQI
5th Jul 2025527 AMAQI
5th Jul 2025528 AMAQI
5th Jul 2025479 AMAQI
5th Jul 20255210 AMAQI
5th Jul 20254811 AMAQI
5th Jul 20254712 PMAQI
5th Jul 2025521 PMAQI
5th Jul 2025522 PMAQI
5th Jul 2025503 PMAQI
5th Jul 2025474 PMAQI
5th Jul 2025495 PMAQI
5th Jul 2025496 PMAQI
5th Jul 2025467 PMAQI
5th Jul 2025468 PMAQI
5th Jul 2025469 PMAQI
5th Jul 20254810 PMAQI
5th Jul 20254611 PMAQI
6th Jul 20254712 AMAQI
6th Jul 2025481 AMAQI
6th Jul 2025392 AMAQI
6th Jul 2025313 AMAQI
6th Jul 2025334 AMAQI
16°C11/23°C
6th Jul 2025325 AMAQI
6th Jul 2025366 AMAQI
6th Jul 2025247 AMAQI
6th Jul 2025318 AMAQI
6th Jul 2025289 AMAQI
6th Jul 20253110 AMAQI
6th Jul 20253411 AMAQI
6th Jul 20253012 PMAQI
6th Jul 2025331 PMAQI
6th Jul 2025382 PMAQI
6th Jul 2025373 PMAQI
6th Jul 2025354 PMAQI
6th Jul 2025345 PMAQI
6th Jul 2025336 PMAQI
6th Jul 2025337 PMAQI
6th Jul 2025328 PMAQI
6th Jul 2025339 PMAQI
6th Jul 20253710 PMAQI
6th Jul 20253411 PMAQI
7th Jul 20253612 AMAQI
7th Jul 2025361 AMAQI
7th Jul 2025242 AMAQI
7th Jul 2025193 AMAQI
7th Jul 2025204 AMAQI
13°C9/19°C
7th Jul 2025205 AMAQI
7th Jul 2025206 AMAQI
7th Jul 2025227 AMAQI
7th Jul 2025258 AMAQI
7th Jul 2025269 AMAQI
7th Jul 20252310 AMAQI
7th Jul 20252211 AMAQI
7th Jul 20252312 PMAQI
7th Jul 2025251 PMAQI
7th Jul 2025262 PMAQI
7th Jul 2025253 PMAQI
7th Jul 2025264 PMAQI
7th Jul 2025255 PMAQI
7th Jul 2025246 PMAQI
7th Jul 2025227 PMAQI
7th Jul 2025208 PMAQI
7th Jul 2025239 PMAQI
7th Jul 20252510 PMAQI
7th Jul 20252511 PMAQI
8th Jul 20252612 AMAQI
8th Jul 2025281 AMAQI
8th Jul 2025192 AMAQI
8th Jul 2025163 AMAQI
8th Jul 2025164 AMAQI
10°C5/16°C
8th Jul 2025175 AMAQI
8th Jul 2025316 AMAQI
8th Jul 2025127 AMAQI
8th Jul 2025198 AMAQI
8th Jul 2025189 AMAQI
8th Jul 20251810 AMAQI
8th Jul 20251711 AMAQI
8th Jul 20251812 PMAQI
8th Jul 2025191 PMAQI
8th Jul 2025192 PMAQI
8th Jul 2025183 PMAQI
8th Jul 2025184 PMAQI
8th Jul 2025195 PMAQI
8th Jul 2025196 PMAQI
8th Jul 2025197 PMAQI
8th Jul 2025198 PMAQI
8th Jul 2025199 PMAQI
8th Jul 20252010 PMAQI
8th Jul 20252011 PMAQI
9th Jul 20252012 AMAQI
9th Jul 2025211 AMAQI
9th Jul 2025192 AMAQI
9th Jul 2025283 AMAQI
9th Jul 2025184 AMAQI
5°C2/7°C
9th Jul 2025165 AMAQI
9th Jul 2025186 AMAQI
9th Jul 2025187 AMAQI
9th Jul 2025198 AMAQI
9th Jul 2025229 AMAQI
9th Jul 20252410 AMAQI
9th Jul 20251911 AMAQI
9th Jul 20251812 PMAQI
9th Jul 2025171 PMAQI
9th Jul 2025182 PMAQI
9th Jul 2025193 PMAQI
9th Jul 2025194 PMAQI
9th Jul 2025185 PMAQI
9th Jul 2025186 PMAQI
9th Jul 2025207 PMAQI
9th Jul 2025208 PMAQI
9th Jul 2025209 PMAQI
9th Jul 20252010 PMAQI
9th Jul 20252011 PMAQI
10th Jul 20252212 AMAQI
10th Jul 2025231 AMAQI
10th Jul 2025202 AMAQI
10th Jul 2025193 AMAQI
10th Jul 2025204 AMAQI
8°C1/16°C
10th Jul 2025205 AMAQI
10th Jul 2025186 AMAQI
10th Jul 2025227 AMAQI
10th Jul 2025258 AMAQI
10th Jul 2025269 AMAQI
10th Jul 20252710 AMAQI
10th Jul 20252411 AMAQI
10th Jul 20252112 PMAQI
10th Jul 2025221 PMAQI
10th Jul 2025222 PMAQI
10th Jul 2025213 PMAQI
10th Jul 2025214 PMAQI
10th Jul 2025225 PMAQI
10th Jul 2025226 PMAQI
10th Jul 2025227 PMAQI
10th Jul 2025228 PMAQI
10th Jul 2025219 PMAQI
10th Jul 20252210 PMAQI
10th Jul 20252211 PMAQI
11th Jul 20252212 AMAQI
11th Jul 2025221 AMAQI
11th Jul 2025222 AMAQI
11th Jul 2025223 AMAQI
11th Jul 2025244 AMAQI
11°C4/19°C
11th Jul 2025245 AMAQI
11th Jul 2025256 AMAQI
11th Jul 2025247 AMAQI
11th Jul 2025368 AMAQI
11th Jul 2025389 AMAQI
11th Jul 20253610 AMAQI
11th Jul 20253211 AMAQI
11th Jul 20253012 PMAQI
11th Jul 2025271 PMAQI
11th Jul 2025282 PMAQI
11th Jul 2025263 PMAQI
11th Jul 2025274 PMAQI
11th Jul 2025265 PMAQI
11th Jul 2025266 PMAQI
11th Jul 2025267 PMAQI
11th Jul 2025268 PMAQI
11th Jul 2025269 PMAQI
11th Jul 20252410 PMAQI
11th Jul 20252711 PMAQI
12th Jul 20252712 AMAQI
12th Jul 2025271 AMAQI
12th Jul 2025272 AMAQI
12th Jul 2025263 AMAQI
12th Jul 2025264 AMAQI
13°C6/20°C
12th Jul 2025265 AMAQI
12th Jul 2025276 AMAQI
12th Jul 2025287 AMAQI
12th Jul 2025318 AMAQI
12th Jul 2025329 AMAQI
12th Jul 20253210 AMAQI
12th Jul 20253011 AMAQI
12th Jul 20253212 PMAQI
12th Jul 2025301 PMAQI
12th Jul 2025322 PMAQI
12th Jul 2025303 PMAQI
12th Jul 2025304 PMAQI
12th Jul 2025285 PMAQI
12th Jul 2025266 PMAQI
12th Jul 2025267 PMAQI
12th Jul 2025288 PMAQI
12th Jul 2025269 PMAQI
12th Jul 20252910 PMAQI
12th Jul 20252911 PMAQI
13th Jul 20252812 AMAQI
13th Jul 2025281 AMAQI
13th Jul 2025292 AMAQI
13th Jul 2025283 AMAQI
13th Jul 2025294 AMAQI
14°C7/20°C
13th Jul 2025315 AMAQI
13th Jul 2025306 AMAQI
13th Jul 2025327 AMAQI
13th Jul 2025348 AMAQI
13th Jul 2025359 AMAQI
13th Jul 20253610 AMAQI
13th Jul 20253511 AMAQI
13th Jul 20253512 PMAQI
13th Jul 2025331 PMAQI
13th Jul 2025322 PMAQI
13th Jul 2025313 PMAQI
13th Jul 2025324 PMAQI
13th Jul 2025305 PMAQI
13th Jul 2025326 PMAQI
13th Jul 2025327 PMAQI
13th Jul 2025298 PMAQI
13th Jul 2025329 PMAQI
13th Jul 20253110 PMAQI
13th Jul 20253111 PMAQI
14th Jul 20253112 AMAQI
14th Jul 2025311 AMAQI
14th Jul 2025302 AMAQI
14th Jul 2025313 AMAQI
14th Jul 2025324 AMAQI
13°C9/19°C
14th Jul 2025335 AMAQI
14th Jul 2025326 AMAQI
14th Jul 2025367 AMAQI
14th Jul 2025398 AMAQI
14th Jul 2025399 AMAQI
14th Jul 20253910 AMAQI
14th Jul 20254011 AMAQI
14th Jul 20253412 PMAQI
14th Jul 2025321 PMAQI
14th Jul 2025302 PMAQI
14th Jul 2025293 PMAQI
14th Jul 2025304 PMAQI
14th Jul 2025325 PMAQI
14th Jul 2025316 PMAQI
14th Jul 2025317 PMAQI
14th Jul 2025288 PMAQI
14th Jul 2025309 PMAQI
14th Jul 20253210 PMAQI
14th Jul 20253211 PMAQI
15th Jul 20253212 AMAQI
15th Jul 2025331 AMAQI
15th Jul 2025282 AMAQI
15th Jul 2025273 AMAQI
15th Jul 2025324 AMAQI
14°C10/20°C
15th Jul 2025305 AMAQI
15th Jul 2025296 AMAQI
15th Jul 2025337 AMAQI
15th Jul 2025348 AMAQI
15th Jul 2025379 AMAQI
15th Jul 20253510 AMAQI
15th Jul 20253511 AMAQI
15th Jul 20253612 PMAQI
15th Jul 2025321 PMAQI
15th Jul 2025302 PMAQI
15th Jul 2025303 PMAQI
15th Jul 2025304 PMAQI
15th Jul 2025305 PMAQI
15th Jul 2025336 PMAQI
15th Jul 2025327 PMAQI
15th Jul 2025348 PMAQI
15th Jul 2025339 PMAQI
15th Jul 20253210 PMAQI
15th Jul 20253211 PMAQI
16th Jul 20253112 AMAQI
16th Jul 2025321 AMAQI
16th Jul 2025392 AMAQI
16th Jul 2025423 AMAQI
16th Jul 2025444 AMAQI
14°C10/20°C
16th Jul 2025405 AMAQI
16th Jul 2025386 AMAQI
16th Jul 2025367 AMAQI
16th Jul 2025388 AMAQI
16th Jul 2025399 AMAQI
16th Jul 20253910 AMAQI
16th Jul 20253911 AMAQI
16th Jul 20253712 PMAQI
16th Jul 2025351 PMAQI
16th Jul 2025362 PMAQI
16th Jul 2025363 PMAQI
16th Jul 2025364 PMAQI
16th Jul 2025365 PMAQI
16th Jul 2025366 PMAQI
16th Jul 2025357 PMAQI
16th Jul 2025328 PMAQI
16th Jul 2025349 PMAQI
16th Jul 20253510 PMAQI
16th Jul 20253511 PMAQI
17th Jul 20253712 AMAQI
17th Jul 2025351 AMAQI
17th Jul 2025262 AMAQI
17th Jul 2025233 AMAQI
17th Jul 2025254 AMAQI
12°C8/17°C
17th Jul 2025235 AMAQI
17th Jul 2025226 AMAQI
17th Jul 2025237 AMAQI
17th Jul 2025228 AMAQI
17th Jul 2025229 AMAQI
17th Jul 20252010 AMAQI
17th Jul 20251811 AMAQI
17th Jul 20251612 PMAQI
17th Jul 2025181 PMAQI
17th Jul 2025202 PMAQI
17th Jul 2025213 PMAQI
17th Jul 2025224 PMAQI
17th Jul 2025215 PMAQI
17th Jul 2025236 PMAQI
17th Jul 2025227 PMAQI
17th Jul 2025228 PMAQI
17th Jul 2025239 PMAQI
17th Jul 20252410 PMAQI
17th Jul 20252411 PMAQI
18th Jul 20252412 AMAQI
18th Jul 2025251 AMAQI
18th Jul 2025192 AMAQI
18th Jul 2025173 AMAQI
18th Jul 2025174 AMAQI
13°C8/20°C
18th Jul 2025185 AMAQI
18th Jul 2025186 AMAQI
18th Jul 2025207 AMAQI
18th Jul 2025248 AMAQI
18th Jul 2025289 AMAQI
18th Jul 20252510 AMAQI
18th Jul 20252411 AMAQI
18th Jul 20252212 PMAQI
18th Jul 2025221 PMAQI
18th Jul 2025202 PMAQI
18th Jul 2025223 PMAQI
18th Jul 2025224 PMAQI
18th Jul 2025205 PMAQI
18th Jul 2025216 PMAQI
18th Jul 2025207 PMAQI
18th Jul 2025208 PMAQI
18th Jul 2025209 PMAQI
18th Jul 20252010 PMAQI
18th Jul 20252011 PMAQI
19th Jul 20252012 AMAQI
19th Jul 2025201 AMAQI
19th Jul 2025202 AMAQI
19th Jul 2025203 AMAQI
19th Jul 2025214 AMAQI
16°C8/23°C
19th Jul 2025215 AMAQI
19th Jul 2025226 AMAQI
19th Jul 2025227 AMAQI
19th Jul 2025258 AMAQI
19th Jul 2025269 AMAQI
19th Jul 20252710 AMAQI
19th Jul 20252711 AMAQI
19th Jul 20252712 PMAQI
19th Jul 2025281 PMAQI
19th Jul 2025262 PMAQI
19th Jul 2025263 PMAQI
19th Jul 2025264 PMAQI
19th Jul 2025255 PMAQI
19th Jul 2025226 PMAQI
19th Jul 2025227 PMAQI
19th Jul 2025228 PMAQI
19th Jul 2025229 PMAQI
19th Jul 20252410 PMAQI
19th Jul 20252311 PMAQI
20th Jul 20252312 AMAQI
20th Jul 2025231 AMAQI
20th Jul 2025252 AMAQI
20th Jul 2025243 AMAQI
20th Jul 2025254 AMAQI
14°C11/23°C
20th Jul 2025255 AMAQI
20th Jul 2025256 AMAQI
20th Jul 2025267 AMAQI
20th Jul 2025288 AMAQI
20th Jul 2025289 AMAQI
20th Jul 20253010 AMAQI
20th Jul 20253111 AMAQI
20th Jul 20252912 PMAQI
20th Jul 2025281 PMAQI
20th Jul 2025302 PMAQI
20th Jul 2025293 PMAQI
20th Jul 2025284 PMAQI
20th Jul 2025285 PMAQI
20th Jul 2025276 PMAQI
20th Jul 2025277 PMAQI
20th Jul 2025288 PMAQI
20th Jul 2025279 PMAQI
20th Jul 20252710 PMAQI
20th Jul 20252611 PMAQI
21st Jul 20252612 AMAQI
21st Jul 2025261 AMAQI
21st Jul 2025202 AMAQI
21st Jul 2025183 AMAQI
21st Jul 2025184 AMAQI
15°C10/21°C
21st Jul 2025195 AMAQI
21st Jul 2025206 AMAQI
21st Jul 2025177 AMAQI
21st Jul 2025188 AMAQI
21st Jul 2025179 AMAQI
21st Jul 20251810 AMAQI
21st Jul 20251811 AMAQI
21st Jul 20251812 PMAQI
21st Jul 2025181 PMAQI
21st Jul 2025202 PMAQI
21st Jul 2025213 PMAQI
21st Jul 2025214 PMAQI
21st Jul 2025215 PMAQI
21st Jul 2025206 PMAQI
21st Jul 2025197 PMAQI
21st Jul 2025188 PMAQI
21st Jul 2025209 PMAQI
21st Jul 20252110 PMAQI
21st Jul 20252111 PMAQI
22nd Jul 20252112 AMAQI
22nd Jul 2025221 AMAQI
22nd Jul 2025182 AMAQI
22nd Jul 2025163 AMAQI
22nd Jul 2025164 AMAQI
12°C8/18°C
22nd Jul 2025155 AMAQI
22nd Jul 2025156 AMAQI
22nd Jul 2025177 AMAQI
22nd Jul 2025178 AMAQI
22nd Jul 2025169 AMAQI
22nd Jul 20251510 AMAQI
22nd Jul 20251511 AMAQI
22nd Jul 20251612 PMAQI
22nd Jul 2025161 PMAQI
22nd Jul 2025162 PMAQI
22nd Jul 2025173 PMAQI
22nd Jul 2025184 PMAQI
22nd Jul 2025185 PMAQI
22nd Jul 2025186 PMAQI
22nd Jul 2025177 PMAQI
22nd Jul 2025188 PMAQI
22nd Jul 2025179 PMAQI
22nd Jul 20251710 PMAQI
22nd Jul 20251811 PMAQI
23rd Jul 20251812 AMAQI
23rd Jul 2025181 AMAQI
23rd Jul 2025182 AMAQI
23rd Jul 2025183 AMAQI
23rd Jul 2025194 AMAQI
12°C6/17°C
23rd Jul 2025215 AMAQI
23rd Jul 2025216 AMAQI
23rd Jul 2025217 AMAQI
23rd Jul 2025238 AMAQI
23rd Jul 2025289 AMAQI
23rd Jul 20252410 AMAQI
23rd Jul 20252111 AMAQI
23rd Jul 20251912 PMAQI
23rd Jul 2025201 PMAQI
23rd Jul 2025202 PMAQI
23rd Jul 2025203 PMAQI
23rd Jul 2025204 PMAQI
23rd Jul 2025205 PMAQI
23rd Jul 2025206 PMAQI
23rd Jul 2025187 PMAQI
23rd Jul 2025198 PMAQI
23rd Jul 2025209 PMAQI
23rd Jul 20252110 PMAQI
23rd Jul 20252211 PMAQI
24th Jul 20252012 AMAQI
24th Jul 2025201 AMAQI
24th Jul 2025182 AMAQI
24th Jul 2025153 AMAQI
24th Jul 2025164 AMAQI
13°C6/20°C
24th Jul 2025155 AMAQI
24th Jul 2025166 AMAQI
24th Jul 2025167 AMAQI
24th Jul 2025178 AMAQI
24th Jul 2025229 AMAQI
24th Jul 20252210 AMAQI
24th Jul 20251811 AMAQI
24th Jul 20251612 PMAQI
24th Jul 2025161 PMAQI
24th Jul 2025172 PMAQI
24th Jul 2025173 PMAQI
24th Jul 2025184 PMAQI
24th Jul 2025185 PMAQI
24th Jul 2025196 PMAQI
24th Jul 2025187 PMAQI
24th Jul 2025178 PMAQI
24th Jul 2025169 PMAQI
24th Jul 20251810 PMAQI
24th Jul 20251711 PMAQI
25th Jul 20251812 AMAQI
25th Jul 2025181 AMAQI
25th Jul 2025172 AMAQI
25th Jul 2025163 AMAQI
25th Jul 2025174 AMAQI
10°C8/13°C
25th Jul 2025195 AMAQI
25th Jul 2025186 AMAQI
25th Jul 2025177 AMAQI
25th Jul 2025188 AMAQI
25th Jul 2025189 AMAQI
25th Jul 20251710 AMAQI
25th Jul 20251611 AMAQI
25th Jul 20251612 PMAQI
25th Jul 2025151 PMAQI
25th Jul 2025162 PMAQI
25th Jul 2025163 PMAQI
25th Jul 2025164 PMAQI
25th Jul 2025165 PMAQI
25th Jul 2025186 PMAQI
25th Jul 2025177 PMAQI
25th Jul 2025168 PMAQI
25th Jul 2025179 PMAQI
25th Jul 20251810 PMAQI
25th Jul 20251711 PMAQI
26th Jul 20251812 AMAQI
26th Jul 2025181 AMAQI
26th Jul 2025182 AMAQI
26th Jul 2025163 AMAQI
26th Jul 2025174 AMAQI
10°C7/13°C
26th Jul 2025185 AMAQI
26th Jul 2025176 AMAQI
26th Jul 2025187 AMAQI
26th Jul 2025178 AMAQI
26th Jul 2025189 AMAQI
26th Jul 20251710 AMAQI
26th Jul 20251811 AMAQI
26th Jul 20252212 PMAQI
26th Jul 2025181 PMAQI
26th Jul 2025202 PMAQI
26th Jul 2025203 PMAQI
26th Jul 2025214 PMAQI
26th Jul 2025215 PMAQI
26th Jul 2025216 PMAQI
26th Jul 2025217 PMAQI
26th Jul 2025218 PMAQI
26th Jul 2025219 PMAQI
26th Jul 20251810 PMAQI
26th Jul 20252011 PMAQI
27th Jul 20251812 AMAQI
27th Jul 2025181 AMAQI
27th Jul 2025202 AMAQI
27th Jul 2025193 AMAQI
27th Jul 2025224 AMAQI
9°C6/13°C
27th Jul 2025225 AMAQI
27th Jul 2025226 AMAQI
27th Jul 2025227 AMAQI
27th Jul 2025228 AMAQI
27th Jul 2025239 AMAQI
27th Jul 20252210 AMAQI
27th Jul 20252211 AMAQI
27th Jul 20252412 PMAQI
27th Jul 2025231 PMAQI
27th Jul 2025222 PMAQI
27th Jul 2025223 PMAQI
27th Jul 2025224 PMAQI
27th Jul 2025215 PMAQI
27th Jul 2025216 PMAQI
27th Jul 2025227 PMAQI
27th Jul 2025228 PMAQI
27th Jul 2025229 PMAQI
27th Jul 20252110 PMAQI
27th Jul 20252211 PMAQI
28th Jul 20252212 AMAQI
28th Jul 2025221 AMAQI
28th Jul 2025172 AMAQI
28th Jul 2025163 AMAQI
28th Jul 2025164 AMAQI
11°C6/17°C
28th Jul 2025165 AMAQI
28th Jul 2025186 AMAQI
28th Jul 2025187 AMAQI
28th Jul 2025168 AMAQI
28th Jul 2025169 AMAQI
28th Jul 20251510 AMAQI
28th Jul 20251511 AMAQI
28th Jul 20251412 PMAQI
28th Jul 2025161 PMAQI
28th Jul 2025182 PMAQI
28th Jul 2025183 PMAQI
28th Jul 2025184 PMAQI
28th Jul 2025165 PMAQI
28th Jul 2025176 PMAQI
28th Jul 2025187 PMAQI
28th Jul 2025188 PMAQI
28th Jul 2025189 PMAQI
28th Jul 20251910 PMAQI
28th Jul 20251911 PMAQI
29th Jul 20251812 AMAQI
29th Jul 2025181 AMAQI
29th Jul 2025192 AMAQI
29th Jul 2025193 AMAQI
29th Jul 2025184 AMAQI
7°C5/8°C
29th Jul 2025195 AMAQI
29th Jul 2025206 AMAQI
29th Jul 2025227 AMAQI
29th Jul 2025248 AMAQI
29th Jul 2025279 AMAQI
29th Jul 20252710 AMAQI
29th Jul 20252611 AMAQI
29th Jul 20252512 PMAQI
29th Jul 2025201 PMAQI
29th Jul 2025192 PMAQI
29th Jul 2025183 PMAQI
29th Jul 2025184 PMAQI
29th Jul 2025185 PMAQI
29th Jul 2025196 PMAQI
29th Jul 2025207 PMAQI
29th Jul 2025218 PMAQI
29th Jul 2025229 PMAQI
29th Jul 20252010 PMAQI
29th Jul 20252111 PMAQI
30th Jul 20252112 AMAQI
30th Jul 2025211 AMAQI
30th Jul 2025252 AMAQI
30th Jul 2025253 AMAQI
30th Jul 2025244 AMAQI
8°C5/12°C
30th Jul 2025245 AMAQI
30th Jul 2025266 AMAQI
30th Jul 2025267 AMAQI
30th Jul 2025318 AMAQI
30th Jul 2025369 AMAQI
30th Jul 20253010 AMAQI
30th Jul 20253211 AMAQI
30th Jul 20253012 PMAQI
30th Jul 2025291 PMAQI
30th Jul 2025252 PMAQI
30th Jul 2025233 PMAQI
30th Jul 2025234 PMAQI
30th Jul 2025235 PMAQI
30th Jul 2025246 PMAQI
30th Jul 2025247 PMAQI
30th Jul 2025238 PMAQI
30th Jul 2025249 PMAQI
30th Jul 20252410 PMAQI
30th Jul 20252411 PMAQI
31st Jul 20252412 AMAQI
31st Jul 2025241 AMAQI
31st Jul 2025242 AMAQI
31st Jul 2025243 AMAQI
31st Jul 2025224 AMAQI
9°C4/15°C
31st Jul 2025225 AMAQI
31st Jul 2025236 AMAQI
31st Jul 2025277 AMAQI
31st Jul 2025348 AMAQI
31st Jul 2025369 AMAQI
31st Jul 20253210 AMAQI
31st Jul 20252811 AMAQI
31st Jul 20252612 PMAQI
31st Jul 2025231 PMAQI
31st Jul 2025222 PMAQI
31st Jul 2025223 PMAQI
31st Jul 2025244 PMAQI
31st Jul 2025205 PMAQI
31st Jul 2025236 PMAQI
31st Jul 2025227 PMAQI
31st Jul 2025238 PMAQI
31st Jul 2025249 PMAQI
31st Jul 20252610 PMAQI
31st Jul 20252611 PMAQI
1st Aug 20252812 AMAQI
1st Aug 2025261 AMAQI
1st Aug 2025242 AMAQI
1st Aug 2025233 AMAQI
1st Aug 2025254 AMAQI
11°C5/17°C
1st Aug 2025255 AMAQI
1st Aug 2025226 AMAQI
1st Aug 2025487 AMAQI
1st Aug 2025588 AMAQI
1st Aug 2025629 AMAQI
1st Aug 20254610 AMAQI
1st Aug 20255311 AMAQI
1st Aug 20254612 PMAQI
1st Aug 2025251 PMAQI
1st Aug 2025242 PMAQI
1st Aug 2025253 PMAQI
1st Aug 2025244 PMAQI
1st Aug 2025245 PMAQI
1st Aug 2025256 PMAQI
1st Aug 2025257 PMAQI
1st Aug 2025258 PMAQI
1st Aug 2025259 PMAQI
1st Aug 20252810 PMAQI
1st Aug 20252711 PMAQI
2nd Aug 20252712 AMAQI
2nd Aug 2025281 AMAQI
2nd Aug 2025272 AMAQI
2nd Aug 2025303 AMAQI
2nd Aug 2025264 AMAQI
11°C6/16°C
2nd Aug 2025235 AMAQI
5 AM2nd Aug 2025256 AMAQI
2nd Aug 2025197 AMAQI
2nd Aug 2025198 AMAQI
2nd Aug 2025199 AMAQI
2nd Aug 20252310 AMAQI
2nd Aug 20251911 AMAQI
2nd Aug 20251912 PMAQI
2nd Aug 2025201 PMAQI
1 PM2nd Aug 2025222 PMAQI
2nd Aug 2025223 PMAQI
2nd Aug 2025224 PMAQI
9 PM
1 AM
4 AM
--°C/°C
Day time
Avg. Highest Time
8 AM - 9 PM
27AQI
14 hours / Day
420 hours / Month
Avg. Lowest Time
5 AM - 7 AM
25AQI
3 hours / Day
90 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 8 AM to 9 PM (Avg. 27), while the lowest AQI was between 5 AM to 7 AM (Avg. 25).
Night time
Avg. Highest Time
12 AM - 1 AM
27AQI
2 hours / Day
60 hours / Month
Avg. Lowest Time
2 AM - 11 PM
25AQI
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. 27), while the lowest AQI was between 2 AM to 11 PM (Avg. 25).
2025 Days Vs Air Quality
Sion Airport A9, Sion, Valais, Switzerland
2025
79%
169
21%
44
Total number of days with different AQI categories in last 214 days in 2025 (151 days remaining)
Good
169 DaysModerate
44 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 79%
Health Risk Level:
Low
In 2025, 79% of 214 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
Sion Airport A9, Sion, Valais, Switzerland
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
78AQI
78AQI
2nd January 2025
49AQI
49AQI
3rd January 2025
34AQI
34AQI
4th January 2025
46AQI
46AQI
5th January 2025
54AQI
54AQI
6th January 2025
40AQI
40AQI
7th January 2025
28AQI
28AQI
8th January 2025
29AQI
29AQI
9th January 2025
29AQI
29AQI
10th January 2025
29AQI
29AQI
11th January 2025
34AQI
34AQI
12th January 2025
43AQI
43AQI
13th January 2025
44AQI
44AQI
14th January 2025
58AQI
58AQI
15th January 2025
68AQI
68AQI
16th January 2025
61AQI
61AQI
17th January 2025
68AQI
68AQI
18th January 2025
71AQI
71AQI
19th January 2025
87AQI
87AQI
20th January 2025
78AQI
78AQI
21st January 2025
65AQI
65AQI
22nd January 2025
65AQI
65AQI
23rd January 2025
46AQI
46AQI
24th January 2025
42AQI
42AQI
25th January 2025
37AQI
37AQI
26th January 2025
28AQI
28AQI
27th January 2025
27AQI
27AQI
28th January 2025
22AQI
22AQI
29th January 2025
24AQI
24AQI
30th January 2025
31AQI
31AQI
31st January 2025
34AQI
34AQI
1st February 2025
40AQI
40AQI
2nd February 2025
47AQI
47AQI
3rd February 2025
49AQI
49AQI
4th February 2025
59AQI
59AQI
5th February 2025
64AQI
64AQI
6th February 2025
70AQI
70AQI
7th February 2025
71AQI
71AQI
8th February 2025
64AQI
64AQI
9th February 2025
72AQI
72AQI
10th February 2025
68AQI
68AQI
11th February 2025
60AQI
60AQI
12th February 2025
48AQI
48AQI
13th February 2025
49AQI
49AQI
14th February 2025
42AQI
42AQI
15th February 2025
57AQI
57AQI
16th February 2025
64AQI
64AQI
17th February 2025
76AQI
76AQI
18th February 2025
82AQI
82AQI
19th February 2025
82AQI
82AQI
20th February 2025
71AQI
71AQI
21st February 2025
61AQI
61AQI
22nd February 2025
54AQI
54AQI
23rd February 2025
47AQI
47AQI
24th February 2025
50AQI
50AQI
25th February 2025
43AQI
43AQI
26th February 2025
28AQI
28AQI
27th February 2025
31AQI
31AQI
28th February 2025
31AQI
31AQI
1st March 2025
37AQI
37AQI
2nd March 2025
48AQI
48AQI
3rd March 2025
54AQI
54AQI
4th March 2025
51AQI
51AQI
5th March 2025
48AQI
48AQI
6th March 2025
48AQI
48AQI
7th March 2025
50AQI
50AQI
8th March 2025
53AQI
53AQI
9th March 2025
56AQI
56AQI
10th March 2025
42AQI
42AQI
11th March 2025
33AQI
33AQI
12th March 2025
29AQI
29AQI
13th March 2025
24AQI
24AQI
14th March 2025
28AQI
28AQI
15th March 2025
46AQI
46AQI
16th March 2025
22AQI
22AQI
17th March 2025
30AQI
30AQI
18th March 2025
33AQI
33AQI
19th March 2025
31AQI
31AQI
20th March 2025
31AQI
31AQI
21st March 2025
38AQI
38AQI
22nd March 2025
25AQI
25AQI
23rd March 2025
19AQI
19AQI
24th March 2025
23AQI
23AQI
25th March 2025
25AQI
25AQI
26th March 2025
41AQI
41AQI
27th March 2025
42AQI
42AQI
28th March 2025
39AQI
39AQI
29th March 2025
44AQI
44AQI
30th March 2025
36AQI
36AQI
31st March 2025
28AQI
28AQI
1st April 2025
28AQI
28AQI
2nd April 2025
32AQI
32AQI
3rd April 2025
32AQI
32AQI
4th April 2025
34AQI
34AQI
5th April 2025
33AQI
33AQI
6th April 2025
30AQI
30AQI
7th April 2025
28AQI
28AQI
8th April 2025
35AQI
35AQI
9th April 2025
36AQI
36AQI
10th April 2025
35AQI
35AQI
11th April 2025
35AQI
35AQI
12th April 2025
35AQI
35AQI
13th April 2025
37AQI
37AQI
14th April 2025
28AQI
28AQI
15th April 2025
22AQI
22AQI
16th April 2025
21AQI
21AQI
17th April 2025
22AQI
22AQI
18th April 2025
31AQI
31AQI
19th April 2025
20AQI
20AQI
20th April 2025
18AQI
18AQI
21st April 2025
15AQI
15AQI
22nd April 2025
17AQI
17AQI
23rd April 2025
20AQI
20AQI
24th April 2025
15AQI
15AQI
25th April 2025
18AQI
18AQI
26th April 2025
18AQI
18AQI
27th April 2025
24AQI
24AQI
28th April 2025
22AQI
22AQI
29th April 2025
28AQI
28AQI
30th April 2025
26AQI
26AQI
1st May 2025
33AQI
33AQI
2nd May 2025
35AQI
35AQI
3rd May 2025
38AQI
38AQI
4th May 2025
25AQI
25AQI
5th May 2025
18AQI
18AQI
6th May 2025
18AQI
18AQI
7th May 2025
31AQI
31AQI
8th May 2025
42AQI
42AQI
9th May 2025
47AQI
47AQI
10th May 2025
26AQI
26AQI
11th May 2025
25AQI
25AQI
12th May 2025
20AQI
20AQI
13th May 2025
19AQI
19AQI
14th May 2025
22AQI
22AQI
15th May 2025
27AQI
27AQI
16th May 2025
25AQI
25AQI
17th May 2025
18AQI
18AQI
18th May 2025
24AQI
24AQI
19th May 2025
31AQI
31AQI
20th May 2025
29AQI
29AQI
21st May 2025
24AQI
24AQI
22nd May 2025
20AQI
20AQI
23rd May 2025
22AQI
22AQI
24th May 2025
20AQI
20AQI
25th May 2025
21AQI
21AQI
26th May 2025
21AQI
21AQI
27th May 2025
19AQI
19AQI
28th May 2025
21AQI
21AQI
29th May 2025
19AQI
19AQI
30th May 2025
18AQI
18AQI
31st May 2025
22AQI
22AQI
1st June 2025
27AQI
27AQI
2nd June 2025
29AQI
29AQI
3rd June 2025
26AQI
26AQI
4th June 2025
30AQI
30AQI
5th June 2025
23AQI
23AQI
6th June 2025
24AQI
24AQI
7th June 2025
20AQI
20AQI
8th June 2025
44AQI
44AQI
9th June 2025
60AQI
60AQI
10th June 2025
74AQI
74AQI
11th June 2025
90AQI
90AQI
12th June 2025
75AQI
75AQI
13th June 2025
65AQI
65AQI
14th June 2025
56AQI
56AQI
15th June 2025
55AQI
55AQI
16th June 2025
33AQI
33AQI
17th June 2025
38AQI
38AQI
18th June 2025
46AQI
46AQI
19th June 2025
50AQI
50AQI
20th June 2025
56AQI
56AQI
21st June 2025
52AQI
52AQI
22nd June 2025
55AQI
55AQI
23rd June 2025
54AQI
54AQI
24th June 2025
51AQI
51AQI
25th June 2025
47AQI
47AQI
26th June 2025
49AQI
49AQI
27th June 2025
40AQI
40AQI
28th June 2025
31AQI
31AQI
29th June 2025
32AQI
32AQI
30th June 2025
39AQI
39AQI
1st July 2025
33AQI
33AQI
2nd July 2025
33AQI
33AQI
3rd July 2025
37AQI
37AQI
4th July 2025
51AQI
51AQI
5th July 2025
49AQI
49AQI
6th July 2025
34AQI
34AQI
7th July 2025
24AQI
24AQI
8th July 2025
19AQI
19AQI
9th July 2025
20AQI
20AQI
10th July 2025
22AQI
22AQI
11th July 2025
26AQI
26AQI
12th July 2025
28AQI
28AQI
13th July 2025
31AQI
31AQI
14th July 2025
32AQI
32AQI
15th July 2025
32AQI
32AQI
16th July 2025
37AQI
37AQI
17th July 2025
23AQI
23AQI
18th July 2025
21AQI
21AQI
19th July 2025
23AQI
23AQI
20th July 2025
27AQI
27AQI
21st July 2025
20AQI
20AQI
22nd July 2025
17AQI
17AQI
23rd July 2025
20AQI
20AQI
24th July 2025
18AQI
18AQI
25th July 2025
17AQI
17AQI
26th July 2025
19AQI
19AQI
27th July 2025
21AQI
21AQI
28th July 2025
17AQI
17AQI
29th July 2025
21AQI
21AQI
30th July 2025
25AQI
25AQI
31st July 2025
25AQI
25AQI
1st August 2025
32AQI
32AQI
47AQI
56AQI
37AQI
27AQI
25AQI
46AQI
27AQI
32AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202537AQI
20
11
12
16
27
4
30
31
18
12
30
1
1
169
44
Highest AQI recorded in
February56AQI
Lowest AQI recorded in
May25AQI
202427AQI
31
29
31
29
1
31
30
31
31
30
31
26
4
18
13
348
18
Highest AQI recorded in
December46AQI
Lowest AQI recorded in
October19AQI
202325AQI
28
28
31
30
31
30
31
31
30
31
29
30
360
Highest AQI recorded in
June34AQI
Lowest AQI recorded in
November18AQI
202224AQI
31
21
30
1
30
31
30
23
4
29
29
30
31
319
1
Highest AQI recorded in
July33AQI
Lowest AQI recorded in
October17AQI
202122AQI
30
25
3
31
28
31
30
31
31
30
31
30
31
359
3
Highest AQI recorded in
April29AQI
Lowest AQI recorded in
October15AQI
202023AQI
13
21
18
30
30
31
30
31
30
31
265
Highest AQI recorded in
April31AQI
Lowest AQI recorded in
October14AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2025(Avg.)
37AQILeast Polluted Year Recorded
2021(Avg.)
22AQISion Airport A9's annual 2025 AQI (37) shows an average percentage change of 56.01% (worsened AQI) compared to previous years: 2020 (23), 2021 (22), 2022 (24), 2023 (25), 2024 (27).
