Horta, Azores, Portugal 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+
September Air Quality Analysis
Horta, Azores, Portugal
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
27th Sep 2023
65AQILowest AQI recorded on
20th Sep 2022
16AQISame Day Analysis (22nd September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 19 of Good air quality, showing improvement over 2023 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 23rd Sep - 24th Sep 2025
Horta, Azores, Portugal
AQI
Day
Night
.
7 AM23rd Sep 2025
8 PM
6 AM24th Sep 2025
Day time
Avg. Highest Time
12AMNaNth undefined
AQI
Avg. Lowest Time
12AMNaNth undefined
AQI
Night time
Avg. Highest Time
6PM23rd Sep
21AQI
Avg. Lowest Time
11AM23rd Sep
17AQI
In the last 24 hours,
Horta's AQI reached its highest point of 21 at 6 PM during the Night, while the lowest point, undefined, was recorded at 6 AM during the Night between 23rd Sep and 24th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Horta, Azores, Portugal
AugSep
25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th
Day
Night
25th Aug 2025247 AMAQI
25th Aug 2025228 AMAQI
25th Aug 2025239 AMAQI
25th Aug 20251910 AMAQI
25th Aug 20252011 AMAQI
25th Aug 20252412 PMAQI
25th Aug 2025251 PMAQI
25th Aug 2025222 PMAQI
25th Aug 2025223 PMAQI
25th Aug 2025224 PMAQI
25th Aug 2025275 PMAQI
25th Aug 2025246 PMAQI
25th Aug 2025247 PMAQI
25th Aug 2025258 PMAQI
25th Aug 2025249 PMAQI
25th Aug 20252410 PMAQI
25th Aug 20252411 PMAQI
26th Aug 20252612 AMAQI
26th Aug 2025281 AMAQI
26th Aug 2025232 AMAQI
26th Aug 2025203 AMAQI
26th Aug 2025214 AMAQI
26th Aug 2025205 AMAQI
26th Aug 2025196 AMAQI
22°C21/22°C
26th Aug 2025217 AMAQI
26th Aug 2025218 AMAQI
26th Aug 2025229 AMAQI
26th Aug 20252010 AMAQI
26th Aug 20252911 AMAQI
26th Aug 20252012 PMAQI
26th Aug 2025221 PMAQI
26th Aug 2025222 PMAQI
26th Aug 2025233 PMAQI
26th Aug 2025234 PMAQI
26th Aug 2025205 PMAQI
26th Aug 2025226 PMAQI
26th Aug 2025217 PMAQI
26th Aug 2025298 PMAQI
26th Aug 2025239 PMAQI
26th Aug 20252310 PMAQI
26th Aug 20252411 PMAQI
27th Aug 20252412 AMAQI
27th Aug 2025281 AMAQI
27th Aug 2025242 AMAQI
27th Aug 2025243 AMAQI
27th Aug 2025204 AMAQI
27th Aug 2025205 AMAQI
27th Aug 2025196 AMAQI
21°C21/22°C
27th Aug 2025207 AMAQI
27th Aug 2025238 AMAQI
27th Aug 2025209 AMAQI
27th Aug 20252010 AMAQI
27th Aug 20252211 AMAQI
27th Aug 20252312 PMAQI
27th Aug 2025231 PMAQI
27th Aug 2025222 PMAQI
27th Aug 2025223 PMAQI
27th Aug 2025244 PMAQI
27th Aug 2025235 PMAQI
27th Aug 2025216 PMAQI
27th Aug 2025207 PMAQI
27th Aug 2025228 PMAQI
27th Aug 2025229 PMAQI
27th Aug 20252410 PMAQI
27th Aug 20252211 PMAQI
28th Aug 20252412 AMAQI
28th Aug 2025241 AMAQI
28th Aug 2025252 AMAQI
28th Aug 2025203 AMAQI
28th Aug 2025224 AMAQI
28th Aug 2025205 AMAQI
28th Aug 2025226 AMAQI
22°C21/23°C
28th Aug 2025217 AMAQI
28th Aug 2025198 AMAQI
28th Aug 2025219 AMAQI
28th Aug 20252610 AMAQI
28th Aug 20252011 AMAQI
28th Aug 20252012 PMAQI
28th Aug 2025201 PMAQI
28th Aug 2025222 PMAQI
28th Aug 2025233 PMAQI
28th Aug 2025234 PMAQI
28th Aug 2025245 PMAQI
28th Aug 2025226 PMAQI
28th Aug 2025237 PMAQI
28th Aug 2025208 PMAQI
28th Aug 2025219 PMAQI
28th Aug 20252210 PMAQI
28th Aug 20252311 PMAQI
29th Aug 20252312 AMAQI
29th Aug 2025241 AMAQI
29th Aug 2025242 AMAQI
29th Aug 2025223 AMAQI
29th Aug 2025214 AMAQI
29th Aug 2025225 AMAQI
29th Aug 2025236 AMAQI
22°C21/22°C
29th Aug 2025217 AMAQI
29th Aug 2025268 AMAQI
29th Aug 2025209 AMAQI
29th Aug 20252010 AMAQI
29th Aug 20252011 AMAQI
29th Aug 20252512 PMAQI
29th Aug 2025261 PMAQI
29th Aug 2025232 PMAQI
29th Aug 2025283 PMAQI
29th Aug 2025264 PMAQI
29th Aug 2025335 PMAQI
29th Aug 2025256 PMAQI
29th Aug 2025287 PMAQI
29th Aug 2025308 PMAQI
29th Aug 2025269 PMAQI
29th Aug 20252610 PMAQI
29th Aug 20252911 PMAQI
30th Aug 20252612 AMAQI
30th Aug 2025271 AMAQI
30th Aug 2025242 AMAQI
30th Aug 2025243 AMAQI
30th Aug 2025284 AMAQI
30th Aug 2025225 AMAQI
30th Aug 2025246 AMAQI
22°C21/23°C
30th Aug 2025257 AMAQI
30th Aug 2025248 AMAQI
30th Aug 2025269 AMAQI
30th Aug 20252710 AMAQI
30th Aug 20252511 AMAQI
30th Aug 20252612 PMAQI
30th Aug 2025271 PMAQI
30th Aug 2025272 PMAQI
30th Aug 2025243 PMAQI
30th Aug 2025244 PMAQI
30th Aug 2025225 PMAQI
30th Aug 2025206 PMAQI
30th Aug 2025227 PMAQI
30th Aug 2025258 PMAQI
30th Aug 2025269 PMAQI
30th Aug 20252810 PMAQI
30th Aug 20252411 PMAQI
31st Aug 20252212 AMAQI
31st Aug 2025261 AMAQI
31st Aug 2025232 AMAQI
31st Aug 2025223 AMAQI
31st Aug 2025224 AMAQI
31st Aug 2025215 AMAQI
31st Aug 2025226 AMAQI
22°C21/22°C
31st Aug 2025207 AMAQI
31st Aug 2025188 AMAQI
31st Aug 2025229 AMAQI
31st Aug 20252010 AMAQI
31st Aug 20251811 AMAQI
31st Aug 20252012 PMAQI
31st Aug 2025251 PMAQI
31st Aug 2025232 PMAQI
31st Aug 2025273 PMAQI
31st Aug 2025204 PMAQI
31st Aug 2025205 PMAQI
31st Aug 2025196 PMAQI
31st Aug 2025197 PMAQI
31st Aug 2025248 PMAQI
31st Aug 2025249 PMAQI
31st Aug 20252610 PMAQI
31st Aug 20252711 PMAQI
1st Sep 20252412 AMAQI
1st Sep 2025221 AMAQI
1st Sep 2025222 AMAQI
1st Sep 2025183 AMAQI
1st Sep 2025174 AMAQI
1st Sep 2025185 AMAQI
1st Sep 2025176 AMAQI
21°C20/21°C
1st Sep 2025207 AMAQI
1st Sep 2025188 AMAQI
1st Sep 2025199 AMAQI
1st Sep 20252010 AMAQI
1st Sep 20252111 AMAQI
1st Sep 20252612 PMAQI
1st Sep 2025231 PMAQI
1st Sep 2025242 PMAQI
1st Sep 2025193 PMAQI
1st Sep 2025204 PMAQI
1st Sep 2025225 PMAQI
1st Sep 2025236 PMAQI
1st Sep 2025207 PMAQI
1st Sep 2025218 PMAQI
1st Sep 2025209 PMAQI
1st Sep 20252210 PMAQI
1st Sep 20251911 PMAQI
2nd Sep 20252012 AMAQI
2nd Sep 2025241 AMAQI
2nd Sep 2025242 AMAQI
2nd Sep 2025243 AMAQI
2nd Sep 2025224 AMAQI
2nd Sep 2025165 AMAQI
2nd Sep 2025206 AMAQI
21°C20/21°C
2nd Sep 2025227 AMAQI
2nd Sep 2025218 AMAQI
2nd Sep 2025189 AMAQI
2nd Sep 20252410 AMAQI
2nd Sep 20252011 AMAQI
2nd Sep 20252212 PMAQI
2nd Sep 2025221 PMAQI
2nd Sep 2025222 PMAQI
2nd Sep 2025243 PMAQI
2nd Sep 2025224 PMAQI
2nd Sep 2025215 PMAQI
2nd Sep 2025266 PMAQI
2nd Sep 2025227 PMAQI
2nd Sep 2025228 PMAQI
2nd Sep 2025249 PMAQI
2nd Sep 20252410 PMAQI
2nd Sep 20252811 PMAQI
3rd Sep 20252812 AMAQI
3rd Sep 2025241 AMAQI
3rd Sep 2025212 AMAQI
3rd Sep 2025213 AMAQI
3rd Sep 2025214 AMAQI
3rd Sep 2025215 AMAQI
3rd Sep 2025206 AMAQI
22°C21/23°C
3rd Sep 2025207 AMAQI
3rd Sep 2025208 AMAQI
3rd Sep 2025229 AMAQI
3rd Sep 20252010 AMAQI
3rd Sep 20252411 AMAQI
3rd Sep 20252212 PMAQI
3rd Sep 2025221 PMAQI
3rd Sep 2025222 PMAQI
3rd Sep 2025263 PMAQI
3rd Sep 2025254 PMAQI
3rd Sep 2025245 PMAQI
3rd Sep 2025246 PMAQI
3rd Sep 2025247 PMAQI
3rd Sep 2025228 PMAQI
3rd Sep 2025259 PMAQI
3rd Sep 20252710 PMAQI
3rd Sep 20252611 PMAQI
4th Sep 20252712 AMAQI
4th Sep 2025251 AMAQI
4th Sep 2025212 AMAQI
4th Sep 2025213 AMAQI
4th Sep 2025244 AMAQI
4th Sep 2025225 AMAQI
4th Sep 2025216 AMAQI
22°C21/22°C
4th Sep 2025207 AMAQI
4th Sep 2025198 AMAQI
4th Sep 2025289 AMAQI
4th Sep 20253610 AMAQI
4th Sep 20253411 AMAQI
4th Sep 20253312 PMAQI
4th Sep 2025281 PMAQI
4th Sep 2025282 PMAQI
4th Sep 2025323 PMAQI
4th Sep 2025194 PMAQI
4th Sep 2025235 PMAQI
4th Sep 2025256 PMAQI
4th Sep 2025257 PMAQI
4th Sep 2025238 PMAQI
4th Sep 2025259 PMAQI
4th Sep 20252410 PMAQI
4th Sep 20252211 PMAQI
5th Sep 20252312 AMAQI
5th Sep 2025261 AMAQI
5th Sep 2025262 AMAQI
5th Sep 2025213 AMAQI
5th Sep 2025244 AMAQI
5th Sep 2025225 AMAQI
5th Sep 2025196 AMAQI
21°C20/22°C
5th Sep 2025257 AMAQI
5th Sep 2025268 AMAQI
5th Sep 2025219 AMAQI
5th Sep 20252210 AMAQI
5th Sep 20252411 AMAQI
5th Sep 20252312 PMAQI
5th Sep 2025261 PMAQI
5th Sep 2025222 PMAQI
5th Sep 2025233 PMAQI
5th Sep 2025244 PMAQI
5th Sep 2025225 PMAQI
5th Sep 2025326 PMAQI
5th Sep 2025227 PMAQI
5th Sep 2025248 PMAQI
5th Sep 2025239 PMAQI
5th Sep 20252510 PMAQI
5th Sep 20252511 PMAQI
6th Sep 20252612 AMAQI
6th Sep 2025261 AMAQI
6th Sep 2025232 AMAQI
6th Sep 2025243 AMAQI
6th Sep 2025284 AMAQI
6th Sep 2025245 AMAQI
6th Sep 2025256 AMAQI
23°C23/24°C
6th Sep 2025227 AMAQI
6th Sep 2025328 AMAQI
6th Sep 2025249 AMAQI
6th Sep 20252810 AMAQI
6th Sep 20253011 AMAQI
6th Sep 20252612 PMAQI
6th Sep 2025261 PMAQI
6th Sep 2025252 PMAQI
6th Sep 2025263 PMAQI
6th Sep 2025324 PMAQI
6th Sep 2025275 PMAQI
6th Sep 2025316 PMAQI
6th Sep 2025267 PMAQI
6th Sep 2025308 PMAQI
6th Sep 2025289 PMAQI
6th Sep 20252810 PMAQI
6th Sep 20253011 PMAQI
7th Sep 20252812 AMAQI
7th Sep 2025301 AMAQI
7th Sep 2025322 AMAQI
7th Sep 2025303 AMAQI
7th Sep 2025374 AMAQI
7th Sep 2025285 AMAQI
7th Sep 2025286 AMAQI
22°C21/22°C
7th Sep 2025287 AMAQI
7th Sep 2025268 AMAQI
7th Sep 2025279 AMAQI
7th Sep 20253510 AMAQI
7th Sep 20252511 AMAQI
7th Sep 20253012 PMAQI
7th Sep 2025301 PMAQI
7th Sep 2025332 PMAQI
7th Sep 2025263 PMAQI
7th Sep 2025294 PMAQI
7th Sep 2025275 PMAQI
7th Sep 2025286 PMAQI
7th Sep 2025287 PMAQI
7th Sep 2025298 PMAQI
7th Sep 2025329 PMAQI
7th Sep 20253410 PMAQI
7th Sep 20253411 PMAQI
8th Sep 20253112 AMAQI
8th Sep 2025371 AMAQI
8th Sep 2025252 AMAQI
8th Sep 2025203 AMAQI
8th Sep 2025244 AMAQI
8th Sep 2025215 AMAQI
8th Sep 2025256 AMAQI
20°C20/21°C
8th Sep 2025317 AMAQI
8th Sep 2025288 AMAQI
8th Sep 2025229 AMAQI
8th Sep 20252610 AMAQI
8th Sep 20252011 AMAQI
8th Sep 20252412 PMAQI
8th Sep 2025241 PMAQI
8th Sep 2025202 PMAQI
8th Sep 2025223 PMAQI
8th Sep 2025264 PMAQI
8th Sep 2025225 PMAQI
8th Sep 2025216 PMAQI
8th Sep 2025187 PMAQI
8th Sep 2025228 PMAQI
8th Sep 2025249 PMAQI
8th Sep 20252310 PMAQI
8th Sep 20252411 PMAQI
9th Sep 20252312 AMAQI
9th Sep 2025251 AMAQI
9th Sep 2025232 AMAQI
9th Sep 2025203 AMAQI
9th Sep 2025184 AMAQI
9th Sep 2025215 AMAQI
9th Sep 2025206 AMAQI
20°C19/20°C
9th Sep 2025187 AMAQI
9th Sep 2025198 AMAQI
9th Sep 2025239 AMAQI
9th Sep 20251810 AMAQI
9th Sep 20252311 AMAQI
9th Sep 20252012 PMAQI
9th Sep 2025191 PMAQI
9th Sep 2025182 PMAQI
9th Sep 2025203 PMAQI
9th Sep 2025234 PMAQI
9th Sep 2025205 PMAQI
9th Sep 2025256 PMAQI
9th Sep 2025217 PMAQI
9th Sep 2025218 PMAQI
9th Sep 2025229 PMAQI
9th Sep 20252010 PMAQI
9th Sep 20252111 PMAQI
10th Sep 20252112 AMAQI
10th Sep 2025211 AMAQI
10th Sep 2025242 AMAQI
10th Sep 2025243 AMAQI
10th Sep 2025244 AMAQI
10th Sep 2025205 AMAQI
10th Sep 2025236 AMAQI
20°C19/21°C
10th Sep 2025247 AMAQI
10th Sep 2025268 AMAQI
10th Sep 2025249 AMAQI
10th Sep 20252710 AMAQI
10th Sep 20252111 AMAQI
10th Sep 20252412 PMAQI
10th Sep 2025241 PMAQI
10th Sep 2025182 PMAQI
10th Sep 2025203 PMAQI
10th Sep 2025354 PMAQI
10th Sep 2025425 PMAQI
10th Sep 2025396 PMAQI
10th Sep 2025277 PMAQI
10th Sep 2025238 PMAQI
10th Sep 2025229 PMAQI
10th Sep 20252210 PMAQI
10th Sep 20252211 PMAQI
11th Sep 20252412 AMAQI
11th Sep 2025221 AMAQI
11th Sep 2025242 AMAQI
11th Sep 2025173 AMAQI
11th Sep 2025184 AMAQI
11th Sep 2025185 AMAQI
11th Sep 2025206 AMAQI
22°C21/22°C
11th Sep 2025227 AMAQI
11th Sep 2025228 AMAQI
11th Sep 2025229 AMAQI
11th Sep 20251910 AMAQI
11th Sep 20252111 AMAQI
11th Sep 20252012 PMAQI
11th Sep 2025201 PMAQI
11th Sep 2025222 PMAQI
11th Sep 2025223 PMAQI
11th Sep 2025244 PMAQI
11th Sep 2025245 PMAQI
11th Sep 2025216 PMAQI
11th Sep 2025237 PMAQI
11th Sep 2025208 PMAQI
11th Sep 2025259 PMAQI
11th Sep 20252410 PMAQI
11th Sep 20252511 PMAQI
12th Sep 20252412 AMAQI
12th Sep 2025281 AMAQI
12th Sep 2025232 AMAQI
12th Sep 2025183 AMAQI
12th Sep 2025194 AMAQI
12th Sep 2025185 AMAQI
12th Sep 2025186 AMAQI
22°C22/22°C
12th Sep 2025197 AMAQI
12th Sep 2025178 AMAQI
12th Sep 2025189 AMAQI
12th Sep 20251810 AMAQI
12th Sep 20252211 AMAQI
12th Sep 20252012 PMAQI
12th Sep 2025221 PMAQI
12th Sep 2025202 PMAQI
12th Sep 2025263 PMAQI
12th Sep 2025214 PMAQI
12th Sep 2025225 PMAQI
12th Sep 2025206 PMAQI
12th Sep 2025227 PMAQI
12th Sep 2025208 PMAQI
12th Sep 2025229 PMAQI
12th Sep 20252310 PMAQI
12th Sep 20252211 PMAQI
13th Sep 20252212 AMAQI
13th Sep 2025241 AMAQI
13th Sep 2025232 AMAQI
13th Sep 2025233 AMAQI
13th Sep 2025184 AMAQI
13th Sep 2025225 AMAQI
13th Sep 2025186 AMAQI
22°C21/22°C
13th Sep 2025207 AMAQI
13th Sep 2025308 AMAQI
13th Sep 2025209 AMAQI
13th Sep 20251910 AMAQI
13th Sep 20252111 AMAQI
13th Sep 20252112 PMAQI
13th Sep 2025221 PMAQI
13th Sep 2025212 PMAQI
13th Sep 2025203 PMAQI
13th Sep 2025324 PMAQI
13th Sep 2025255 PMAQI
13th Sep 2025236 PMAQI
13th Sep 2025217 PMAQI
13th Sep 2025208 PMAQI
13th Sep 2025249 PMAQI
13th Sep 20252410 PMAQI
13th Sep 20252611 PMAQI
14th Sep 20252212 AMAQI
14th Sep 2025231 AMAQI
14th Sep 2025182 AMAQI
14th Sep 2025213 AMAQI
14th Sep 2025194 AMAQI
14th Sep 2025235 AMAQI
14th Sep 2025186 AMAQI
22°C21/22°C
14th Sep 2025217 AMAQI
14th Sep 2025278 AMAQI
14th Sep 2025219 AMAQI
14th Sep 20251810 AMAQI
14th Sep 20251811 AMAQI
14th Sep 20251912 PMAQI
14th Sep 2025231 PMAQI
14th Sep 2025262 PMAQI
14th Sep 2025243 PMAQI
14th Sep 2025264 PMAQI
14th Sep 2025235 PMAQI
14th Sep 2025226 PMAQI
14th Sep 2025307 PMAQI
14th Sep 2025278 PMAQI
14th Sep 2025249 PMAQI
14th Sep 20252310 PMAQI
14th Sep 20252411 PMAQI
15th Sep 20252512 AMAQI
15th Sep 2025331 AMAQI
15th Sep 2025332 AMAQI
15th Sep 2025203 AMAQI
15th Sep 2025234 AMAQI
15th Sep 2025265 AMAQI
15th Sep 2025226 AMAQI
23°C22/23°C
15th Sep 2025187 AMAQI
15th Sep 2025278 AMAQI
15th Sep 2025289 AMAQI
15th Sep 20254110 AMAQI
15th Sep 20252211 AMAQI
15th Sep 20252912 PMAQI
15th Sep 2025261 PMAQI
15th Sep 2025232 PMAQI
15th Sep 2025283 PMAQI
15th Sep 2025304 PMAQI
15th Sep 2025245 PMAQI
15th Sep 2025306 PMAQI
15th Sep 2025277 PMAQI
15th Sep 2025348 PMAQI
15th Sep 2025339 PMAQI
15th Sep 20253010 PMAQI
15th Sep 20253711 PMAQI
16th Sep 20253212 AMAQI
16th Sep 2025321 AMAQI
16th Sep 2025312 AMAQI
16th Sep 2025293 AMAQI
16th Sep 2025284 AMAQI
16th Sep 2025235 AMAQI
16th Sep 2025296 AMAQI
22°C22/23°C
16th Sep 2025227 AMAQI
16th Sep 2025258 AMAQI
16th Sep 2025229 AMAQI
16th Sep 20252710 AMAQI
16th Sep 20252711 AMAQI
16th Sep 20252812 PMAQI
16th Sep 2025341 PMAQI
16th Sep 2025322 PMAQI
16th Sep 2025443 PMAQI
16th Sep 2025344 PMAQI
16th Sep 2025285 PMAQI
16th Sep 2025286 PMAQI
16th Sep 2025267 PMAQI
16th Sep 2025308 PMAQI
16th Sep 2025329 PMAQI
16th Sep 20253210 PMAQI
16th Sep 20253211 PMAQI
17th Sep 20253012 AMAQI
17th Sep 2025471 AMAQI
17th Sep 2025422 AMAQI
17th Sep 2025383 AMAQI
17th Sep 2025584 AMAQI
17th Sep 2025275 AMAQI
17th Sep 2025346 AMAQI
22°C22/23°C
17th Sep 2025347 AMAQI
17th Sep 2025428 AMAQI
17th Sep 2025329 AMAQI
17th Sep 20253810 AMAQI
17th Sep 20253811 AMAQI
17th Sep 20253012 PMAQI
17th Sep 2025301 PMAQI
17th Sep 2025322 PMAQI
17th Sep 2025293 PMAQI
17th Sep 2025304 PMAQI
17th Sep 2025365 PMAQI
17th Sep 2025316 PMAQI
17th Sep 2025337 PMAQI
17th Sep 2025348 PMAQI
17th Sep 2025349 PMAQI
17th Sep 20253310 PMAQI
17th Sep 20253311 PMAQI
18th Sep 20253512 AMAQI
18th Sep 2025361 AMAQI
18th Sep 2025312 AMAQI
18th Sep 2025243 AMAQI
18th Sep 2025244 AMAQI
18th Sep 2025245 AMAQI
18th Sep 2025266 AMAQI
23°C23/23°C
18th Sep 2025307 AMAQI
18th Sep 2025298 AMAQI
18th Sep 2025299 AMAQI
18th Sep 20253010 AMAQI
18th Sep 20253011 AMAQI
18th Sep 20253412 PMAQI
18th Sep 2025301 PMAQI
18th Sep 2025272 PMAQI
18th Sep 2025273 PMAQI
18th Sep 2025244 PMAQI
18th Sep 2025255 PMAQI
18th Sep 2025246 PMAQI
18th Sep 2025247 PMAQI
18th Sep 2025238 PMAQI
18th Sep 2025289 PMAQI
18th Sep 20252910 PMAQI
18th Sep 20252911 PMAQI
19th Sep 20252912 AMAQI
19th Sep 2025331 AMAQI
19th Sep 2025412 AMAQI
19th Sep 2025343 AMAQI
19th Sep 2025284 AMAQI
19th Sep 2025205 AMAQI
19th Sep 2025226 AMAQI
21°C20/21°C
19th Sep 2025277 AMAQI
19th Sep 2025368 AMAQI
19th Sep 2025369 AMAQI
19th Sep 20253310 AMAQI
19th Sep 20252211 AMAQI
19th Sep 20252412 PMAQI
19th Sep 2025281 PMAQI
19th Sep 2025292 PMAQI
19th Sep 2025253 PMAQI
19th Sep 2025294 PMAQI
19th Sep 2025275 PMAQI
19th Sep 2025286 PMAQI
19th Sep 2025287 PMAQI
19th Sep 2025258 PMAQI
19th Sep 2025299 PMAQI
19th Sep 20253010 PMAQI
19th Sep 20253011 PMAQI
20th Sep 20252912 AMAQI
20th Sep 2025301 AMAQI
20th Sep 2025312 AMAQI
20th Sep 2025213 AMAQI
20th Sep 2025304 AMAQI
20th Sep 2025275 AMAQI
20th Sep 2025266 AMAQI
20°C19/20°C
20th Sep 2025247 AMAQI
20th Sep 2025218 AMAQI
20th Sep 2025229 AMAQI
20th Sep 20252110 AMAQI
20th Sep 20252011 AMAQI
20th Sep 20252312 PMAQI
20th Sep 2025261 PMAQI
20th Sep 2025302 PMAQI
20th Sep 2025263 PMAQI
20th Sep 2025254 PMAQI
20th Sep 2025265 PMAQI
20th Sep 2025276 PMAQI
20th Sep 2025257 PMAQI
20th Sep 2025268 PMAQI
20th Sep 2025289 PMAQI
20th Sep 20253010 PMAQI
20th Sep 20252611 PMAQI
21st Sep 20252612 AMAQI
21st Sep 2025291 AMAQI
21st Sep 2025312 AMAQI
21st Sep 2025203 AMAQI
21st Sep 2025274 AMAQI
21st Sep 2025295 AMAQI
21st Sep 2025206 AMAQI
20°C19/20°C
21st Sep 2025207 AMAQI
21st Sep 2025198 AMAQI
21st Sep 2025199 AMAQI
21st Sep 20251710 AMAQI
21st Sep 20251711 AMAQI
21st Sep 20251812 PMAQI
21st Sep 2025221 PMAQI
21st Sep 2025202 PMAQI
21st Sep 2025223 PMAQI
21st Sep 2025194 PMAQI
21st Sep 2025205 PMAQI
21st Sep 2025226 PMAQI
21st Sep 2025227 PMAQI
21st Sep 2025228 PMAQI
21st Sep 2025239 PMAQI
21st Sep 20252310 PMAQI
21st Sep 20252211 PMAQI
22nd Sep 20252312 AMAQI
22nd Sep 2025301 AMAQI
22nd Sep 2025262 AMAQI
22nd Sep 2025163 AMAQI
22nd Sep 2025144 AMAQI
22nd Sep 2025155 AMAQI
22nd Sep 2025166 AMAQI
20°C19/21°C
22nd Sep 2025187 AMAQI
22nd Sep 2025248 AMAQI
22nd Sep 2025189 AMAQI
22nd Sep 20251310 AMAQI
22nd Sep 20251311 AMAQI
22nd Sep 20251512 PMAQI
22nd Sep 2025181 PMAQI
22nd Sep 2025192 PMAQI
22nd Sep 2025193 PMAQI
22nd Sep 2025194 PMAQI
22nd Sep 2025185 PMAQI
22nd Sep 2025186 PMAQI
22nd Sep 2025207 PMAQI
22nd Sep 2025208 PMAQI
22nd Sep 2025209 PMAQI
22nd Sep 20251910 PMAQI
22nd Sep 20252011 PMAQI
23rd Sep 20252012 AMAQI
23rd Sep 2025201 AMAQI
23rd Sep 2025192 AMAQI
23rd Sep 2025173 AMAQI
23rd Sep 2025184 AMAQI
23rd Sep 2025185 AMAQI
23rd Sep 2025186 AMAQI
21°C20/22°C
23rd Sep 2025177 AMAQI
23rd Sep 2025188 AMAQI
23rd Sep 2025189 AMAQI
23rd Sep 20251810 AMAQI
23rd Sep 20251711 AMAQI
23rd Sep 20251812 PMAQI
23rd Sep 2025191 PMAQI
23rd Sep 2025182 PMAQI
23rd Sep 2025183 PMAQI
23rd Sep 2025184 PMAQI
23rd Sep 2025205 PMAQI
23rd Sep 2025216 PMAQI
23rd Sep 2025197 PMAQI
23rd Sep 2025208 PMAQI
23rd Sep 2025209 PMAQI
23rd Sep 20252110 PMAQI
23rd Sep 20252111 PMAQI
24th Sep 20251912 AMAQI
--°C/°C
7 AM
1 PM
8 PM
1 AM
6 AM
--°C/°C
Day time
Avg. Highest Time
3 PM - 6 PM
25AQI
4 hours / Day
120 hours / Month
Avg. Lowest Time
7 AM
22AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 3 PM to 6 PM (Avg. 25), while the lowest AQI was between 7 AM to 7 AM (Avg. 22).
Night time
Avg. Highest Time
1 AM
28AQI
1 hours / Day
30 hours / Month
Avg. Lowest Time
5 AM - 6 AM
22AQI
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. 28), while the lowest AQI was between 5 AM to 6 AM (Avg. 22).
2025 Days Vs Air Quality
Horta, Azores, Portugal
2025
99%
263
0.7%
2
Total number of days with different AQI categories in last 266 days in 2025 (99 days remaining)
Good
263 DaysModerate
2 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 99%
Health Risk Level:
Very Low
In 2025, 99% of 266 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
Horta, Azores, Portugal
AQI levels in 2025
AQI
PM2.5
PM10
CO
SO2
NO2
O3
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
-1th undefined 2025
-1th undefined 2025
-1th undefined 2025
1st January 2025
34AQI
34AQI
2nd January 2025
31AQI
31AQI
3rd January 2025
28AQI
28AQI
4th January 2025
28AQI
28AQI
5th January 2025
27AQI
27AQI
6th January 2025
24AQI
24AQI
7th January 2025
28AQI
28AQI
8th January 2025
28AQI
28AQI
9th January 2025
28AQI
28AQI
10th January 2025
25AQI
25AQI
11th January 2025
29AQI
29AQI
12th January 2025
34AQI
34AQI
13th January 2025
36AQI
36AQI
14th January 2025
31AQI
31AQI
15th January 2025
36AQI
36AQI
16th January 2025
58AQI
58AQI
17th January 2025
40AQI
40AQI
18th January 2025
33AQI
33AQI
19th January 2025
36AQI
36AQI
20th January 2025
35AQI
35AQI
21st January 2025
32AQI
32AQI
22nd January 2025
30AQI
30AQI
23rd January 2025
28AQI
28AQI
24th January 2025
28AQI
28AQI
25th January 2025
27AQI
27AQI
26th January 2025
28AQI
28AQI
27th January 2025
27AQI
27AQI
28th January 2025
28AQI
28AQI
29th January 2025
29AQI
29AQI
30th January 2025
28AQI
28AQI
31st January 2025
26AQI
26AQI
1st February 2025
27AQI
27AQI
2nd February 2025
28AQI
28AQI
3rd February 2025
26AQI
26AQI
4th February 2025
28AQI
28AQI
5th February 2025
27AQI
27AQI
6th February 2025
27AQI
27AQI
7th February 2025
29AQI
29AQI
8th February 2025
30AQI
30AQI
9th February 2025
28AQI
28AQI
10th February 2025
28AQI
28AQI
11th February 2025
28AQI
28AQI
12th February 2025
31AQI
31AQI
13th February 2025
29AQI
29AQI
14th February 2025
29AQI
29AQI
15th February 2025
33AQI
33AQI
16th February 2025
30AQI
30AQI
17th February 2025
29AQI
29AQI
18th February 2025
30AQI
30AQI
19th February 2025
28AQI
28AQI
20th February 2025
29AQI
29AQI
21st February 2025
28AQI
28AQI
22nd February 2025
29AQI
29AQI
23rd February 2025
28AQI
28AQI
24th February 2025
28AQI
28AQI
25th February 2025
34AQI
34AQI
26th February 2025
34AQI
34AQI
27th February 2025
38AQI
38AQI
28th February 2025
30AQI
30AQI
1st March 2025
36AQI
36AQI
2nd March 2025
31AQI
31AQI
3rd March 2025
29AQI
29AQI
4th March 2025
36AQI
36AQI
5th March 2025
27AQI
27AQI
6th March 2025
29AQI
29AQI
7th March 2025
30AQI
30AQI
8th March 2025
30AQI
30AQI
9th March 2025
32AQI
32AQI
10th March 2025
28AQI
28AQI
11th March 2025
30AQI
30AQI
12th March 2025
29AQI
29AQI
13th March 2025
26AQI
26AQI
14th March 2025
22AQI
22AQI
15th March 2025
19AQI
19AQI
16th March 2025
25AQI
25AQI
17th March 2025
21AQI
21AQI
18th March 2025
18AQI
18AQI
19th March 2025
26AQI
26AQI
20th March 2025
22AQI
22AQI
21st March 2025
17AQI
17AQI
22nd March 2025
20AQI
20AQI
23rd March 2025
23AQI
23AQI
24th March 2025
20AQI
20AQI
25th March 2025
28AQI
28AQI
26th March 2025
25AQI
25AQI
27th March 2025
20AQI
20AQI
28th March 2025
21AQI
21AQI
29th March 2025
26AQI
26AQI
30th March 2025
26AQI
26AQI
31st March 2025
32AQI
32AQI
1st April 2025
21AQI
21AQI
2nd April 2025
26AQI
26AQI
3rd April 2025
17AQI
17AQI
4th April 2025
19AQI
19AQI
5th April 2025
17AQI
17AQI
6th April 2025
14AQI
14AQI
7th April 2025
17AQI
17AQI
8th April 2025
20AQI
20AQI
9th April 2025
16AQI
16AQI
10th April 2025
19AQI
19AQI
11th April 2025
19AQI
19AQI
12th April 2025
21AQI
21AQI
13th April 2025
18AQI
18AQI
14th April 2025
19AQI
19AQI
15th April 2025
17AQI
17AQI
16th April 2025
15AQI
15AQI
17th April 2025
18AQI
18AQI
18th April 2025
22AQI
22AQI
19th April 2025
20AQI
20AQI
20th April 2025
19AQI
19AQI
21st April 2025
16AQI
16AQI
22nd April 2025
16AQI
16AQI
23rd April 2025
25AQI
25AQI
24th April 2025
20AQI
20AQI
25th April 2025
23AQI
23AQI
26th April 2025
19AQI
19AQI
27th April 2025
14AQI
14AQI
28th April 2025
15AQI
15AQI
29th April 2025
17AQI
17AQI
30th April 2025
19AQI
19AQI
1st May 2025
20AQI
20AQI
2nd May 2025
21AQI
21AQI
3rd May 2025
34AQI
34AQI
4th May 2025
24AQI
24AQI
5th May 2025
27AQI
27AQI
6th May 2025
19AQI
19AQI
7th May 2025
16AQI
16AQI
8th May 2025
17AQI
17AQI
9th May 2025
17AQI
17AQI
10th May 2025
16AQI
16AQI
11th May 2025
16AQI
16AQI
12th May 2025
17AQI
17AQI
13th May 2025
19AQI
19AQI
14th May 2025
19AQI
19AQI
15th May 2025
20AQI
20AQI
16th May 2025
25AQI
25AQI
17th May 2025
26AQI
26AQI
18th May 2025
22AQI
22AQI
19th May 2025
29AQI
29AQI
20th May 2025
22AQI
22AQI
21st May 2025
23AQI
23AQI
22nd May 2025
15AQI
15AQI
23rd May 2025
15AQI
15AQI
24th May 2025
17AQI
17AQI
25th May 2025
17AQI
17AQI
26th May 2025
18AQI
18AQI
27th May 2025
18AQI
18AQI
28th May 2025
18AQI
18AQI
29th May 2025
23AQI
23AQI
30th May 2025
22AQI
22AQI
31st May 2025
26AQI
26AQI
1st June 2025
29AQI
29AQI
2nd June 2025
28AQI
28AQI
3rd June 2025
27AQI
27AQI
4th June 2025
27AQI
27AQI
5th June 2025
27AQI
27AQI
6th June 2025
24AQI
24AQI
7th June 2025
22AQI
22AQI
8th June 2025
28AQI
28AQI
9th June 2025
32AQI
32AQI
10th June 2025
40AQI
40AQI
11th June 2025
44AQI
44AQI
12th June 2025
43AQI
43AQI
13th June 2025
36AQI
36AQI
14th June 2025
31AQI
31AQI
15th June 2025
27AQI
27AQI
16th June 2025
25AQI
25AQI
17th June 2025
30AQI
30AQI
18th June 2025
40AQI
40AQI
19th June 2025
44AQI
44AQI
20th June 2025
44AQI
44AQI
21st June 2025
42AQI
42AQI
22nd June 2025
43AQI
43AQI
23rd June 2025
42AQI
42AQI
24th June 2025
39AQI
39AQI
25th June 2025
36AQI
36AQI
26th June 2025
33AQI
33AQI
27th June 2025
30AQI
30AQI
28th June 2025
35AQI
35AQI
29th June 2025
39AQI
39AQI
30th June 2025
40AQI
40AQI
1st July 2025
45AQI
45AQI
2nd July 2025
38AQI
38AQI
3rd July 2025
34AQI
34AQI
4th July 2025
36AQI
36AQI
5th July 2025
41AQI
41AQI
6th July 2025
41AQI
41AQI
7th July 2025
38AQI
38AQI
8th July 2025
35AQI
35AQI
9th July 2025
31AQI
31AQI
10th July 2025
30AQI
30AQI
11th July 2025
30AQI
30AQI
12th July 2025
32AQI
32AQI
13th July 2025
36AQI
36AQI
14th July 2025
35AQI
35AQI
15th July 2025
30AQI
30AQI
16th July 2025
29AQI
29AQI
17th July 2025
31AQI
31AQI
18th July 2025
30AQI
30AQI
19th July 2025
25AQI
25AQI
20th July 2025
27AQI
27AQI
21st July 2025
30AQI
30AQI
22nd July 2025
29AQI
29AQI
23rd July 2025
27AQI
27AQI
24th July 2025
27AQI
27AQI
25th July 2025
27AQI
27AQI
26th July 2025
26AQI
26AQI
27th July 2025
27AQI
27AQI
28th July 2025
26AQI
26AQI
29th July 2025
25AQI
25AQI
30th July 2025
26AQI
26AQI
31st July 2025
34AQI
34AQI
1st August 2025
41AQI
41AQI
2nd August 2025
36AQI
36AQI
3rd August 2025
37AQI
37AQI
4th August 2025
35AQI
35AQI
5th August 2025
37AQI
37AQI
6th August 2025
37AQI
37AQI
7th August 2025
42AQI
42AQI
8th August 2025
34AQI
34AQI
9th August 2025
34AQI
34AQI
10th August 2025
35AQI
35AQI
11th August 2025
44AQI
44AQI
12th August 2025
45AQI
45AQI
13th August 2025
52AQI
52AQI
14th August 2025
47AQI
47AQI
15th August 2025
50AQI
50AQI
16th August 2025
42AQI
42AQI
17th August 2025
42AQI
42AQI
18th August 2025
43AQI
43AQI
19th August 2025
34AQI
34AQI
20th August 2025
31AQI
31AQI
21st August 2025
32AQI
32AQI
22nd August 2025
31AQI
31AQI
23rd August 2025
33AQI
33AQI
24th August 2025
30AQI
30AQI
25th August 2025
25AQI
25AQI
26th August 2025
23AQI
23AQI
27th August 2025
22AQI
22AQI
28th August 2025
22AQI
22AQI
29th August 2025
25AQI
25AQI
30th August 2025
25AQI
25AQI
31st August 2025
22AQI
22AQI
1st September 2025
21AQI
21AQI
2nd September 2025
22AQI
22AQI
3rd September 2025
23AQI
23AQI
4th September 2025
26AQI
26AQI
5th September 2025
24AQI
24AQI
6th September 2025
27AQI
27AQI
7th September 2025
30AQI
30AQI
8th September 2025
24AQI
24AQI
9th September 2025
21AQI
21AQI
10th September 2025
25AQI
25AQI
11th September 2025
22AQI
22AQI
12th September 2025
21AQI
21AQI
13th September 2025
22AQI
22AQI
14th September 2025
22AQI
22AQI
15th September 2025
28AQI
28AQI
16th September 2025
29AQI
29AQI
17th September 2025
35AQI
35AQI
18th September 2025
28AQI
28AQI
19th September 2025
29AQI
29AQI
20th September 2025
26AQI
26AQI
21st September 2025
22AQI
22AQI
22nd September 2025
19AQI
19AQI
23rd September 2025
24th September 2025
25th September 2025
26th September 2025
27th September 2025
28th September 2025
29th September 2025
30th September 2025
1st October 2025
2nd October 2025
3rd October 2025
4th October 2025
5th October 2025
6th October 2025
7th October 2025
8th October 2025
9th October 2025
10th October 2025
11th October 2025
12th October 2025
13th October 2025
14th October 2025
15th October 2025
16th October 2025
17th October 2025
18th October 2025
19th October 2025
20th October 2025
21st October 2025
22nd October 2025
23rd October 2025
24th October 2025
25th October 2025
26th October 2025
27th October 2025
28th October 2025
29th October 2025
30th October 2025
31st October 2025
1st November 2025
2nd November 2025
3rd November 2025
4th November 2025
5th November 2025
6th November 2025
7th November 2025
8th November 2025
9th November 2025
10th November 2025
11th November 2025
12th November 2025
13th November 2025
14th November 2025
15th November 2025
16th November 2025
17th November 2025
18th November 2025
19th November 2025
20th November 2025
21st November 2025
22nd November 2025
23rd November 2025
24th November 2025
25th November 2025
26th November 2025
27th November 2025
28th November 2025
29th November 2025
30th November 2025
1st December 2025
2nd December 2025
3rd December 2025
4th December 2025
5th December 2025
6th December 2025
7th December 2025
8th December 2025
9th December 2025
10th December 2025
11th December 2025
12th December 2025
13th December 2025
14th December 2025
15th December 2025
16th December 2025
17th December 2025
18th December 2025
19th December 2025
20th December 2025
21st December 2025
22nd December 2025
23rd December 2025
24th December 2025
25th December 2025
26th December 2025
27th December 2025
28th December 2025
29th December 2025
30th December 2025
31st December 2025
31AQI
29AQI
26AQI
19AQI
21AQI
34AQI
32AQI
35AQI
25AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202528AQI
30
1
28
31
30
31
30
31
30
1
22
263
2
Highest AQI recorded in
August35AQI
Lowest AQI recorded in
April19AQI
202432AQI
23
8
16
6
1
23
16
12
30
31
31
7
30
1
29
1
29
2
277
18
1
Highest AQI recorded in
February45AQI
Lowest AQI recorded in
November25AQI
202338AQI
1
18
2
4
7
2
7
12
17
9
31
28
2
31
29
29
1
20
11
24
1
31
252
61
4
Highest AQI recorded in
January77AQI
Lowest AQI recorded in
July20AQI
202241AQI
29
4
14
30
22
2
27
9
1
14
16
1
6
4
8
1
152
23
4
8
1
Highest AQI recorded in
December127AQI
Lowest AQI recorded in
July18AQI
202129AQI
30
28
31
30
30
25
27
2
2
14
6
1
1
6
30
22
28
2
31
326
10
3
1
6
Highest AQI recorded in
August118AQI
Lowest AQI recorded in
June9AQI
202027AQI
13
12
1
5
2
1
18
30
30
27
23
31
30
28
242
1
5
2
1
Highest AQI recorded in
April88AQI
Lowest AQI recorded in
December10AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2022(Avg.)
41AQILeast Polluted Year Recorded
2020(Avg.)
27AQIHorta's annual 2025 AQI (28) shows an average percentage change of -14.04% (improved AQI) compared to previous years: 2020 (27), 2021 (29), 2022 (41), 2023 (38), 2024 (32).
