Saint Leo, Chiesanuova, Chiesanuova, San Marino 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 Leo, Chiesanuova, Chiesanuova, San Marino
2021
2022
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
11th Aug 2021
71AQILowest AQI recorded on
29th Aug 2021
28AQISame Day Analysis (7th August ):
On this day, AQI across the 4 years varied significantly: 2025 ranks 3rd highest AQI at 34 of Good air quality, showing improvement over 2024 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 7th Aug - 8th Aug 2025
Saint Leo, Chiesanuova, Chiesanuova, San Marino
AQI
Day
Night
.
5 AM7th Aug 2025
8 PM
4 AM8th Aug 2025
Day time
Avg. Highest Time
6AM7th Aug
34AQI
Avg. Lowest Time
2PM7th Aug
28AQI
Night time
Avg. Highest Time
5AM7th Aug
40AQI
Avg. Lowest Time
2AM8th Aug
32AQI
In the last 24 hours,
Saint Leo's AQI reached its highest point of 40 at 5 AM during the Night, while the lowest point, 28, was recorded at 2 PM during the Day between 7th Aug and 8th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Saint Leo, Chiesanuova, Chiesanuova, San Marino
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 - 08th08th
Day
Night
9th Jul 2025255 AMAQI
9th Jul 2025186 AMAQI
9th Jul 2025197 AMAQI
9th Jul 2025188 AMAQI
9th Jul 2025199 AMAQI
9th Jul 20251810 AMAQI
9th Jul 20252311 AMAQI
9th Jul 20251812 PMAQI
9th Jul 2025181 PMAQI
9th Jul 2025182 PMAQI
9th Jul 2025173 PMAQI
9th Jul 2025184 PMAQI
9th Jul 2025165 PMAQI
9th Jul 2025206 PMAQI
9th Jul 2025207 PMAQI
9th Jul 2025208 PMAQI
9th Jul 2025209 PMAQI
9th Jul 20251810 PMAQI
9th Jul 20252311 PMAQI
10th Jul 20252312 AMAQI
10th Jul 2025281 AMAQI
10th Jul 2025222 AMAQI
10th Jul 2025223 AMAQI
10th Jul 2025214 AMAQI
20°C15/23°C
10th Jul 2025225 AMAQI
10th Jul 2025186 AMAQI
10th Jul 2025207 AMAQI
10th Jul 2025218 AMAQI
10th Jul 2025209 AMAQI
10th Jul 20252210 AMAQI
10th Jul 20252611 AMAQI
10th Jul 20252512 PMAQI
10th Jul 2025251 PMAQI
10th Jul 2025192 PMAQI
10th Jul 2025203 PMAQI
10th Jul 2025214 PMAQI
10th Jul 2025245 PMAQI
10th Jul 2025246 PMAQI
10th Jul 2025237 PMAQI
10th Jul 2025228 PMAQI
10th Jul 2025269 PMAQI
10th Jul 20253210 PMAQI
10th Jul 20252411 PMAQI
11th Jul 20252912 AMAQI
11th Jul 2025321 AMAQI
11th Jul 2025252 AMAQI
11th Jul 2025233 AMAQI
11th Jul 2025284 AMAQI
22°C18/25°C
11th Jul 2025295 AMAQI
11th Jul 2025226 AMAQI
11th Jul 2025257 AMAQI
11th Jul 2025228 AMAQI
11th Jul 2025269 AMAQI
11th Jul 20252610 AMAQI
11th Jul 20252411 AMAQI
11th Jul 20252512 PMAQI
11th Jul 2025251 PMAQI
11th Jul 2025242 PMAQI
11th Jul 2025233 PMAQI
11th Jul 2025264 PMAQI
11th Jul 2025235 PMAQI
11th Jul 2025236 PMAQI
11th Jul 2025227 PMAQI
11th Jul 2025288 PMAQI
11th Jul 2025289 PMAQI
11th Jul 20252810 PMAQI
11th Jul 20252811 PMAQI
12th Jul 20253112 AMAQI
12th Jul 2025351 AMAQI
12th Jul 2025282 AMAQI
12th Jul 2025263 AMAQI
12th Jul 2025254 AMAQI
23°C19/27°C
12th Jul 2025265 AMAQI
12th Jul 2025286 AMAQI
12th Jul 2025307 AMAQI
12th Jul 2025288 AMAQI
12th Jul 2025289 AMAQI
12th Jul 20252910 AMAQI
12th Jul 20252911 AMAQI
12th Jul 20252812 PMAQI
12th Jul 2025281 PMAQI
12th Jul 2025282 PMAQI
12th Jul 2025243 PMAQI
12th Jul 2025234 PMAQI
12th Jul 2025235 PMAQI
12th Jul 2025256 PMAQI
12th Jul 2025267 PMAQI
12th Jul 2025288 PMAQI
12th Jul 2025289 PMAQI
12th Jul 20252610 PMAQI
12th Jul 20252611 PMAQI
13th Jul 20252912 AMAQI
13th Jul 2025361 AMAQI
13th Jul 2025312 AMAQI
13th Jul 2025243 AMAQI
13th Jul 2025254 AMAQI
24°C19/28°C
13th Jul 2025265 AMAQI
13th Jul 2025306 AMAQI
13th Jul 2025297 AMAQI
13th Jul 2025288 AMAQI
13th Jul 2025299 AMAQI
13th Jul 20252610 AMAQI
13th Jul 20252911 AMAQI
13th Jul 20253012 PMAQI
13th Jul 2025291 PMAQI
13th Jul 2025272 PMAQI
13th Jul 2025253 PMAQI
13th Jul 2025264 PMAQI
13th Jul 2025265 PMAQI
13th Jul 2025276 PMAQI
13th Jul 2025287 PMAQI
13th Jul 2025288 PMAQI
13th Jul 2025269 PMAQI
13th Jul 20252510 PMAQI
13th Jul 20252711 PMAQI
14th Jul 20253212 AMAQI
14th Jul 2025301 AMAQI
14th Jul 2025292 AMAQI
14th Jul 2025303 AMAQI
14th Jul 2025324 AMAQI
24°C20/30°C
14th Jul 2025325 AMAQI
14th Jul 2025286 AMAQI
14th Jul 2025277 AMAQI
14th Jul 2025298 AMAQI
14th Jul 2025309 AMAQI
14th Jul 20252710 AMAQI
14th Jul 20252911 AMAQI
14th Jul 20252812 PMAQI
14th Jul 2025301 PMAQI
14th Jul 2025302 PMAQI
14th Jul 2025293 PMAQI
14th Jul 2025294 PMAQI
14th Jul 2025285 PMAQI
14th Jul 2025306 PMAQI
14th Jul 2025327 PMAQI
14th Jul 2025328 PMAQI
14th Jul 2025299 PMAQI
14th Jul 20253010 PMAQI
14th Jul 20252911 PMAQI
15th Jul 20253012 AMAQI
15th Jul 2025291 AMAQI
15th Jul 2025272 AMAQI
15th Jul 2025283 AMAQI
15th Jul 2025314 AMAQI
24°C20/27°C
15th Jul 2025335 AMAQI
15th Jul 2025326 AMAQI
15th Jul 2025367 AMAQI
15th Jul 2025368 AMAQI
15th Jul 2025379 AMAQI
15th Jul 20253610 AMAQI
15th Jul 20253811 AMAQI
15th Jul 20254212 PMAQI
15th Jul 2025371 PMAQI
15th Jul 2025402 PMAQI
15th Jul 2025403 PMAQI
15th Jul 2025384 PMAQI
15th Jul 2025395 PMAQI
15th Jul 2025386 PMAQI
15th Jul 2025347 PMAQI
15th Jul 2025328 PMAQI
15th Jul 2025349 PMAQI
15th Jul 20253510 PMAQI
15th Jul 20253411 PMAQI
16th Jul 20253312 AMAQI
16th Jul 2025341 AMAQI
16th Jul 2025322 AMAQI
16th Jul 2025313 AMAQI
16th Jul 2025344 AMAQI
26°C23/28°C
16th Jul 2025345 AMAQI
16th Jul 2025366 AMAQI
16th Jul 2025337 AMAQI
16th Jul 2025368 AMAQI
16th Jul 2025389 AMAQI
16th Jul 20253410 AMAQI
16th Jul 20253511 AMAQI
16th Jul 20253512 PMAQI
16th Jul 2025321 PMAQI
16th Jul 2025342 PMAQI
16th Jul 2025333 PMAQI
16th Jul 2025364 PMAQI
16th Jul 2025355 PMAQI
16th Jul 2025356 PMAQI
16th Jul 2025347 PMAQI
16th Jul 2025328 PMAQI
16th Jul 2025369 PMAQI
16th Jul 20253510 PMAQI
16th Jul 20253211 PMAQI
17th Jul 20253512 AMAQI
17th Jul 2025341 AMAQI
17th Jul 2025382 AMAQI
17th Jul 2025393 AMAQI
17th Jul 2025424 AMAQI
26°C22/29°C
17th Jul 2025445 AMAQI
17th Jul 2025446 AMAQI
17th Jul 2025407 AMAQI
17th Jul 2025408 AMAQI
17th Jul 2025429 AMAQI
17th Jul 20253110 AMAQI
17th Jul 20253411 AMAQI
17th Jul 20253112 PMAQI
17th Jul 2025331 PMAQI
17th Jul 2025322 PMAQI
17th Jul 2025243 PMAQI
17th Jul 2025234 PMAQI
17th Jul 2025225 PMAQI
17th Jul 2025226 PMAQI
17th Jul 2025207 PMAQI
17th Jul 2025208 PMAQI
17th Jul 2025249 PMAQI
17th Jul 20252410 PMAQI
17th Jul 20252811 PMAQI
18th Jul 20253212 AMAQI
18th Jul 2025371 AMAQI
18th Jul 2025262 AMAQI
18th Jul 2025203 AMAQI
18th Jul 2025204 AMAQI
23°C21/26°C
18th Jul 2025225 AMAQI
18th Jul 2025246 AMAQI
18th Jul 2025247 AMAQI
18th Jul 2025258 AMAQI
18th Jul 2025289 AMAQI
18th Jul 20252410 AMAQI
18th Jul 20252211 AMAQI
18th Jul 20252612 PMAQI
18th Jul 2025241 PMAQI
18th Jul 2025222 PMAQI
18th Jul 2025213 PMAQI
18th Jul 2025214 PMAQI
18th Jul 2025225 PMAQI
18th Jul 2025246 PMAQI
18th Jul 2025277 PMAQI
18th Jul 2025308 PMAQI
18th Jul 2025309 PMAQI
18th Jul 20252810 PMAQI
18th Jul 20252711 PMAQI
19th Jul 20252512 AMAQI
19th Jul 2025281 AMAQI
19th Jul 2025262 AMAQI
19th Jul 2025253 AMAQI
19th Jul 2025254 AMAQI
25°C20/28°C
19th Jul 2025265 AMAQI
19th Jul 2025266 AMAQI
19th Jul 2025317 AMAQI
19th Jul 2025328 AMAQI
19th Jul 2025269 AMAQI
19th Jul 20252710 AMAQI
19th Jul 20252611 AMAQI
19th Jul 20252612 PMAQI
19th Jul 2025281 PMAQI
19th Jul 2025242 PMAQI
19th Jul 2025243 PMAQI
19th Jul 2025244 PMAQI
19th Jul 2025255 PMAQI
19th Jul 2025266 PMAQI
19th Jul 2025277 PMAQI
19th Jul 2025288 PMAQI
19th Jul 2025299 PMAQI
19th Jul 20252910 PMAQI
19th Jul 20252911 PMAQI
20th Jul 20252912 AMAQI
20th Jul 2025291 AMAQI
20th Jul 2025302 AMAQI
20th Jul 2025313 AMAQI
20th Jul 2025284 AMAQI
26°C22/29°C
20th Jul 2025305 AMAQI
20th Jul 2025316 AMAQI
20th Jul 2025337 AMAQI
20th Jul 2025338 AMAQI
20th Jul 2025379 AMAQI
20th Jul 20253810 AMAQI
20th Jul 20253911 AMAQI
20th Jul 20254112 PMAQI
20th Jul 2025401 PMAQI
20th Jul 2025352 PMAQI
20th Jul 2025363 PMAQI
20th Jul 2025334 PMAQI
20th Jul 2025335 PMAQI
20th Jul 2025366 PMAQI
20th Jul 2025347 PMAQI
20th Jul 2025378 PMAQI
20th Jul 2025379 PMAQI
20th Jul 20253710 PMAQI
20th Jul 20253811 PMAQI
21st Jul 20253612 AMAQI
21st Jul 2025341 AMAQI
21st Jul 2025422 AMAQI
21st Jul 2025433 AMAQI
21st Jul 2025404 AMAQI
27°C22/31°C
21st Jul 2025445 AMAQI
21st Jul 2025406 AMAQI
21st Jul 2025447 AMAQI
21st Jul 2025408 AMAQI
21st Jul 2025419 AMAQI
21st Jul 20253810 AMAQI
21st Jul 20253611 AMAQI
21st Jul 20253712 PMAQI
21st Jul 2025341 PMAQI
21st Jul 2025352 PMAQI
21st Jul 2025293 PMAQI
21st Jul 2025284 PMAQI
21st Jul 2025285 PMAQI
21st Jul 2025276 PMAQI
21st Jul 2025297 PMAQI
21st Jul 2025278 PMAQI
21st Jul 2025289 PMAQI
21st Jul 20252710 PMAQI
21st Jul 20253011 PMAQI
22nd Jul 20253012 AMAQI
22nd Jul 2025361 AMAQI
22nd Jul 2025252 AMAQI
22nd Jul 2025243 AMAQI
22nd Jul 2025284 AMAQI
28°C23/34°C
22nd Jul 2025315 AMAQI
22nd Jul 2025396 AMAQI
22nd Jul 2025427 AMAQI
22nd Jul 2025368 AMAQI
22nd Jul 2025279 AMAQI
22nd Jul 20252810 AMAQI
22nd Jul 20253611 AMAQI
22nd Jul 20253812 PMAQI
22nd Jul 2025361 PMAQI
22nd Jul 2025322 PMAQI
22nd Jul 2025353 PMAQI
22nd Jul 2025314 PMAQI
22nd Jul 2025345 PMAQI
22nd Jul 2025306 PMAQI
22nd Jul 2025287 PMAQI
22nd Jul 2025318 PMAQI
22nd Jul 2025309 PMAQI
22nd Jul 20253510 PMAQI
22nd Jul 20253611 PMAQI
23rd Jul 20253512 AMAQI
23rd Jul 2025361 AMAQI
23rd Jul 2025322 AMAQI
23rd Jul 2025263 AMAQI
23rd Jul 2025244 AMAQI
26°C22/29°C
23rd Jul 2025245 AMAQI
23rd Jul 2025266 AMAQI
23rd Jul 2025277 AMAQI
23rd Jul 2025278 AMAQI
23rd Jul 2025269 AMAQI
23rd Jul 20252910 AMAQI
23rd Jul 20252711 AMAQI
23rd Jul 20252512 PMAQI
23rd Jul 2025241 PMAQI
23rd Jul 2025212 PMAQI
23rd Jul 2025243 PMAQI
23rd Jul 2025274 PMAQI
23rd Jul 2025305 PMAQI
23rd Jul 2025306 PMAQI
23rd Jul 2025327 PMAQI
23rd Jul 2025268 PMAQI
23rd Jul 2025249 PMAQI
23rd Jul 20252610 PMAQI
23rd Jul 20252011 PMAQI
24th Jul 20252712 AMAQI
24th Jul 2025281 AMAQI
24th Jul 2025272 AMAQI
24th Jul 2025263 AMAQI
24th Jul 2025274 AMAQI
25°C21/29°C
24th Jul 2025285 AMAQI
24th Jul 2025286 AMAQI
24th Jul 2025357 AMAQI
24th Jul 2025328 AMAQI
24th Jul 2025309 AMAQI
24th Jul 20253210 AMAQI
24th Jul 20252711 AMAQI
24th Jul 20252612 PMAQI
24th Jul 2025271 PMAQI
24th Jul 2025232 PMAQI
24th Jul 2025193 PMAQI
24th Jul 2025204 PMAQI
24th Jul 2025205 PMAQI
24th Jul 2025216 PMAQI
24th Jul 2025227 PMAQI
24th Jul 2025248 PMAQI
24th Jul 2025239 PMAQI
24th Jul 20252410 PMAQI
24th Jul 20252011 PMAQI
25th Jul 20252512 AMAQI
25th Jul 2025301 AMAQI
25th Jul 2025232 AMAQI
25th Jul 2025203 AMAQI
25th Jul 2025204 AMAQI
27°C23/31°C
25th Jul 2025205 AMAQI
25th Jul 2025246 AMAQI
25th Jul 2025277 AMAQI
25th Jul 2025298 AMAQI
25th Jul 2025299 AMAQI
25th Jul 20253010 AMAQI
25th Jul 20253011 AMAQI
25th Jul 20253212 PMAQI
25th Jul 2025301 PMAQI
25th Jul 2025302 PMAQI
25th Jul 2025333 PMAQI
25th Jul 2025284 PMAQI
25th Jul 2025285 PMAQI
25th Jul 2025266 PMAQI
25th Jul 2025267 PMAQI
25th Jul 2025308 PMAQI
25th Jul 2025269 PMAQI
25th Jul 20252410 PMAQI
25th Jul 20252411 PMAQI
26th Jul 20252512 AMAQI
26th Jul 2025311 AMAQI
26th Jul 2025252 AMAQI
26th Jul 2025223 AMAQI
26th Jul 2025244 AMAQI
24°C21/27°C
26th Jul 2025365 AMAQI
26th Jul 2025296 AMAQI
26th Jul 2025287 AMAQI
26th Jul 2025308 AMAQI
26th Jul 2025269 AMAQI
26th Jul 20252110 AMAQI
26th Jul 20252211 AMAQI
26th Jul 20251912 PMAQI
26th Jul 2025241 PMAQI
26th Jul 2025502 PMAQI
26th Jul 2025203 PMAQI
26th Jul 2025184 PMAQI
26th Jul 2025245 PMAQI
26th Jul 2025226 PMAQI
26th Jul 2025217 PMAQI
26th Jul 2025218 PMAQI
26th Jul 2025229 PMAQI
26th Jul 20252110 PMAQI
26th Jul 20252111 PMAQI
27th Jul 20252412 AMAQI
27th Jul 2025261 AMAQI
27th Jul 2025222 AMAQI
27th Jul 2025213 AMAQI
27th Jul 2025244 AMAQI
21°C17/24°C
27th Jul 2025255 AMAQI
27th Jul 2025216 AMAQI
27th Jul 2025247 AMAQI
27th Jul 2025208 AMAQI
27th Jul 2025209 AMAQI
27th Jul 20252010 AMAQI
27th Jul 20251911 AMAQI
27th Jul 20252212 PMAQI
27th Jul 2025241 PMAQI
27th Jul 2025232 PMAQI
27th Jul 2025233 PMAQI
27th Jul 2025224 PMAQI
27th Jul 2025245 PMAQI
27th Jul 2025216 PMAQI
27th Jul 2025217 PMAQI
27th Jul 2025208 PMAQI
27th Jul 2025229 PMAQI
27th Jul 20252310 PMAQI
27th Jul 20252011 PMAQI
28th Jul 20252212 AMAQI
28th Jul 2025231 AMAQI
28th Jul 2025242 AMAQI
28th Jul 2025243 AMAQI
28th Jul 2025274 AMAQI
23°C18/27°C
28th Jul 2025195 AMAQI
28th Jul 2025236 AMAQI
28th Jul 2025287 AMAQI
28th Jul 2025278 AMAQI
28th Jul 2025249 AMAQI
28th Jul 20252310 AMAQI
28th Jul 20252211 AMAQI
28th Jul 20252212 PMAQI
28th Jul 2025201 PMAQI
28th Jul 2025192 PMAQI
28th Jul 2025243 PMAQI
28th Jul 2025224 PMAQI
28th Jul 2025215 PMAQI
28th Jul 2025216 PMAQI
28th Jul 2025217 PMAQI
28th Jul 2025228 PMAQI
28th Jul 2025229 PMAQI
28th Jul 20252310 PMAQI
28th Jul 20252211 PMAQI
29th Jul 20252212 AMAQI
29th Jul 2025251 AMAQI
29th Jul 2025212 AMAQI
29th Jul 2025203 AMAQI
29th Jul 2025194 AMAQI
20°C19/22°C
29th Jul 2025205 AMAQI
29th Jul 2025206 AMAQI
29th Jul 2025227 AMAQI
29th Jul 2025228 AMAQI
29th Jul 2025219 AMAQI
29th Jul 20252010 AMAQI
29th Jul 20252211 AMAQI
29th Jul 20252012 PMAQI
29th Jul 2025201 PMAQI
29th Jul 2025182 PMAQI
29th Jul 2025183 PMAQI
29th Jul 2025184 PMAQI
29th Jul 2025185 PMAQI
29th Jul 2025196 PMAQI
29th Jul 2025197 PMAQI
29th Jul 2025218 PMAQI
29th Jul 2025189 PMAQI
29th Jul 20251810 PMAQI
29th Jul 20251811 PMAQI
30th Jul 20252012 AMAQI
30th Jul 2025211 AMAQI
30th Jul 2025202 AMAQI
30th Jul 2025203 AMAQI
30th Jul 2025204 AMAQI
21°C19/24°C
30th Jul 2025205 AMAQI
30th Jul 2025246 AMAQI
30th Jul 2025227 AMAQI
30th Jul 2025238 AMAQI
30th Jul 2025249 AMAQI
30th Jul 20252310 AMAQI
30th Jul 20252411 AMAQI
30th Jul 20252312 PMAQI
30th Jul 2025211 PMAQI
30th Jul 2025202 PMAQI
30th Jul 2025203 PMAQI
30th Jul 2025204 PMAQI
30th Jul 2025205 PMAQI
30th Jul 2025216 PMAQI
30th Jul 2025207 PMAQI
30th Jul 2025208 PMAQI
30th Jul 2025239 PMAQI
30th Jul 20252310 PMAQI
30th Jul 20252311 PMAQI
31st Jul 20252312 AMAQI
31st Jul 2025231 AMAQI
31st Jul 2025232 AMAQI
31st Jul 2025233 AMAQI
31st Jul 2025224 AMAQI
22°C20/24°C
31st Jul 2025215 AMAQI
31st Jul 2025206 AMAQI
31st Jul 2025217 AMAQI
31st Jul 2025248 AMAQI
31st Jul 2025209 AMAQI
31st Jul 20252210 AMAQI
31st Jul 20251811 AMAQI
31st Jul 20251712 PMAQI
31st Jul 2025221 PMAQI
31st Jul 2025292 PMAQI
31st Jul 2025283 PMAQI
31st Jul 2025274 PMAQI
31st Jul 2025245 PMAQI
31st Jul 2025266 PMAQI
31st Jul 2025287 PMAQI
31st Jul 2025268 PMAQI
31st Jul 2025279 PMAQI
31st Jul 20252510 PMAQI
31st Jul 20252611 PMAQI
1st Aug 20252712 AMAQI
1st Aug 2025261 AMAQI
1st Aug 2025262 AMAQI
1st Aug 2025293 AMAQI
1st Aug 2025274 AMAQI
23°C20/25°C
1st Aug 2025335 AMAQI
1st Aug 2025296 AMAQI
1st Aug 2025327 AMAQI
1st Aug 2025388 AMAQI
1st Aug 2025369 AMAQI
1st Aug 20253810 AMAQI
1st Aug 20253511 AMAQI
1st Aug 20253412 PMAQI
1st Aug 2025311 PMAQI
1st Aug 2025332 PMAQI
1st Aug 2025323 PMAQI
1st Aug 2025324 PMAQI
1st Aug 2025345 PMAQI
1st Aug 2025366 PMAQI
1st Aug 2025337 PMAQI
1st Aug 2025368 PMAQI
1st Aug 2025359 PMAQI
1st Aug 20253210 PMAQI
1st Aug 20253311 PMAQI
2nd Aug 20253312 AMAQI
2nd Aug 2025341 AMAQI
2nd Aug 2025302 AMAQI
2nd Aug 2025343 AMAQI
2nd Aug 2025284 AMAQI
24°C21/28°C
2nd Aug 2025295 AMAQI
2nd Aug 2025346 AMAQI
2nd Aug 2025307 AMAQI
2nd Aug 2025368 AMAQI
2nd Aug 2025309 AMAQI
2nd Aug 20252810 AMAQI
2nd Aug 20253611 AMAQI
2nd Aug 20253412 PMAQI
2nd Aug 2025361 PMAQI
2nd Aug 2025342 PMAQI
2nd Aug 2025313 PMAQI
2nd Aug 2025354 PMAQI
2nd Aug 2025325 PMAQI
2nd Aug 2025346 PMAQI
2nd Aug 2025367 PMAQI
2nd Aug 2025348 PMAQI
2nd Aug 2025389 PMAQI
2nd Aug 20254110 PMAQI
2nd Aug 20254611 PMAQI
3rd Aug 20254212 AMAQI
3rd Aug 2025361 AMAQI
3rd Aug 2025402 AMAQI
3rd Aug 2025353 AMAQI
3rd Aug 2025414 AMAQI
24°C20/29°C
3rd Aug 2025395 AMAQI
3rd Aug 2025366 AMAQI
3rd Aug 2025347 AMAQI
3rd Aug 2025288 AMAQI
3rd Aug 2025359 AMAQI
3rd Aug 20253410 AMAQI
3rd Aug 20253311 AMAQI
3rd Aug 20254212 PMAQI
3rd Aug 2025371 PMAQI
3rd Aug 2025332 PMAQI
3rd Aug 2025383 PMAQI
3rd Aug 2025384 PMAQI
3rd Aug 2025445 PMAQI
3rd Aug 2025396 PMAQI
3rd Aug 2025537 PMAQI
3rd Aug 2025488 PMAQI
3rd Aug 2025489 PMAQI
3rd Aug 20253810 PMAQI
3rd Aug 20253711 PMAQI
4th Aug 20253812 AMAQI
4th Aug 2025421 AMAQI
4th Aug 2025262 AMAQI
4th Aug 2025233 AMAQI
4th Aug 2025264 AMAQI
20°C19/22°C
4th Aug 2025325 AMAQI
4th Aug 2025246 AMAQI
4th Aug 2025307 AMAQI
4th Aug 2025278 AMAQI
4th Aug 2025339 AMAQI
4th Aug 20252810 AMAQI
4th Aug 20252611 AMAQI
4th Aug 20252912 PMAQI
4th Aug 2025301 PMAQI
4th Aug 2025312 PMAQI
4th Aug 2025323 PMAQI
4th Aug 2025364 PMAQI
4th Aug 2025345 PMAQI
4th Aug 2025366 PMAQI
4th Aug 2025387 PMAQI
4th Aug 2025368 PMAQI
4th Aug 2025349 PMAQI
4th Aug 20254410 PMAQI
4th Aug 20253911 PMAQI
5th Aug 20254012 AMAQI
5th Aug 2025401 AMAQI
5th Aug 2025482 AMAQI
5th Aug 2025393 AMAQI
5th Aug 2025404 AMAQI
22°C19/25°C
5th Aug 2025295 AMAQI
5th Aug 2025466 AMAQI
5th Aug 2025507 AMAQI
5th Aug 2025438 AMAQI
5th Aug 2025429 AMAQI
5th Aug 20253510 AMAQI
5th Aug 20253411 AMAQI
5th Aug 20253612 PMAQI
5th Aug 2025341 PMAQI
5th Aug 2025392 PMAQI
5th Aug 2025353 PMAQI
5th Aug 2025414 PMAQI
5th Aug 2025375 PMAQI
5th Aug 2025386 PMAQI
5th Aug 2025347 PMAQI
5th Aug 2025348 PMAQI
5th Aug 2025389 PMAQI
5th Aug 20254010 PMAQI
5th Aug 20254011 PMAQI
6th Aug 20253612 AMAQI
6th Aug 2025411 AMAQI
6th Aug 2025482 AMAQI
6th Aug 2025373 AMAQI
6th Aug 2025404 AMAQI
23°C21/25°C
6th Aug 2025385 AMAQI
6th Aug 2025376 AMAQI
6th Aug 2025427 AMAQI
6th Aug 2025408 AMAQI
6th Aug 2025429 AMAQI
6th Aug 20254910 AMAQI
6th Aug 20254111 AMAQI
6th Aug 20254012 PMAQI
6th Aug 2025501 PMAQI
6th Aug 2025532 PMAQI
6th Aug 2025493 PMAQI
6th Aug 2025494 PMAQI
6th Aug 2025475 PMAQI
6th Aug 2025446 PMAQI
6th Aug 2025467 PMAQI
6th Aug 2025478 PMAQI
6th Aug 2025459 PMAQI
6th Aug 20254510 PMAQI
6th Aug 20254811 PMAQI
7th Aug 20254412 AMAQI
7th Aug 2025481 AMAQI
7th Aug 2025322 AMAQI
7th Aug 2025323 AMAQI
7th Aug 2025354 AMAQI
24°C21/26°C
7th Aug 2025405 AMAQI
7th Aug 2025346 AMAQI
7th Aug 2025307 AMAQI
7th Aug 2025308 AMAQI
7th Aug 2025329 AMAQI
7th Aug 20253110 AMAQI
7th Aug 20253011 AMAQI
7th Aug 20252812 PMAQI
7th Aug 2025281 PMAQI
7th Aug 2025282 PMAQI
7th Aug 2025303 PMAQI
7th Aug 2025304 PMAQI
7th Aug 2025315 PMAQI
7th Aug 2025306 PMAQI
7th Aug 2025317 PMAQI
7th Aug 2025338 PMAQI
7th Aug 2025349 PMAQI
7th Aug 20253410 PMAQI
7th Aug 20253511 PMAQI
8th Aug 20253612 AMAQI
8th Aug 2025351 AMAQI
8th Aug 2025322 AMAQI
8th Aug 2025333 AMAQI
8th Aug 2025354 AMAQI
24°C21/26°C
8th Aug 2025345 AMAQI
5 AM8th Aug 2025346 AMAQI
8th Aug 2025377 AMAQI
8th Aug 2025388 AMAQI
8th Aug 2025419 AMAQI
8th Aug 20254410 AMAQI
8th Aug 20254411 AMAQI
12 PM
8 PM
12 AM
4 AM
--°C/°C
Day time
Avg. Highest Time
7 AM - 8 PM
29AQI
14 hours / Day
420 hours / Month
Avg. Lowest Time
5 AM - 8 PM
29AQI
16 hours / Day
480 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 7 AM to 8 PM (Avg. 29), while the lowest AQI was between 5 AM to 8 PM (Avg. 29).
Night time
Avg. Highest Time
1 AM
32AQI
1 hours / Day
30 hours / Month
Avg. Lowest Time
3 AM - 11 PM
29AQI
5 hours / Day
150 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 1 AM to 1 AM (Avg. 32), while the lowest AQI was between 3 AM to 11 PM (Avg. 29).
2025 Days Vs Air Quality
Saint Leo, Chiesanuova, Chiesanuova, San Marino
2025
74%
162
25%
54
1%
3
Total number of days with different AQI categories in last 220 days in 2025 (145 days remaining)
Good
162 DaysModerate
54 DaysPoor
3 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 74%
Health Risk Level:
Low
In 2025, 74% of 220 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 Leo, Chiesanuova, Chiesanuova, San Marino
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
89AQI
89AQI
2nd January 2025
62AQI
62AQI
3rd January 2025
83AQI
83AQI
4th January 2025
88AQI
88AQI
5th January 2025
85AQI
85AQI
6th January 2025
75AQI
75AQI
7th January 2025
69AQI
69AQI
8th January 2025
66AQI
66AQI
9th January 2025
52AQI
52AQI
10th January 2025
40AQI
40AQI
11th January 2025
45AQI
45AQI
12th January 2025
44AQI
44AQI
13th January 2025
39AQI
39AQI
14th January 2025
41AQI
41AQI
15th January 2025
48AQI
48AQI
16th January 2025
41AQI
41AQI
17th January 2025
50AQI
50AQI
18th January 2025
62AQI
62AQI
19th January 2025
79AQI
79AQI
20th January 2025
97AQI
97AQI
21st January 2025
60AQI
60AQI
22nd January 2025
54AQI
54AQI
23rd January 2025
52AQI
52AQI
24th January 2025
56AQI
56AQI
25th January 2025
55AQI
55AQI
26th January 2025
51AQI
51AQI
27th January 2025
50AQI
50AQI
28th January 2025
47AQI
47AQI
29th January 2025
43AQI
43AQI
30th January 2025
48AQI
48AQI
31st January 2025
44AQI
44AQI
1st February 2025
36AQI
36AQI
2nd February 2025
44AQI
44AQI
3rd February 2025
49AQI
49AQI
4th February 2025
51AQI
51AQI
5th February 2025
53AQI
53AQI
6th February 2025
51AQI
51AQI
7th February 2025
56AQI
56AQI
8th February 2025
72AQI
72AQI
9th February 2025
66AQI
66AQI
10th February 2025
73AQI
73AQI
11th February 2025
61AQI
61AQI
12th February 2025
78AQI
78AQI
13th February 2025
58AQI
58AQI
14th February 2025
49AQI
49AQI
15th February 2025
50AQI
50AQI
16th February 2025
53AQI
53AQI
17th February 2025
56AQI
56AQI
18th February 2025
57AQI
57AQI
19th February 2025
56AQI
56AQI
20th February 2025
58AQI
58AQI
21st February 2025
68AQI
68AQI
22nd February 2025
71AQI
71AQI
23rd February 2025
87AQI
87AQI
24th February 2025
113AQI
113AQI
25th February 2025
132AQI
132AQI
26th February 2025
118AQI
118AQI
27th February 2025
94AQI
94AQI
28th February 2025
51AQI
51AQI
1st March 2025
42AQI
42AQI
2nd March 2025
43AQI
43AQI
3rd March 2025
44AQI
44AQI
4th March 2025
44AQI
44AQI
5th March 2025
48AQI
48AQI
6th March 2025
52AQI
52AQI
7th March 2025
51AQI
51AQI
8th March 2025
53AQI
53AQI
9th March 2025
55AQI
55AQI
10th March 2025
52AQI
52AQI
11th March 2025
45AQI
45AQI
12th March 2025
47AQI
47AQI
13th March 2025
38AQI
38AQI
14th March 2025
38AQI
38AQI
15th March 2025
61AQI
61AQI
16th March 2025
41AQI
41AQI
17th March 2025
38AQI
38AQI
18th March 2025
37AQI
37AQI
19th March 2025
40AQI
40AQI
20th March 2025
44AQI
44AQI
21st March 2025
47AQI
47AQI
22nd March 2025
38AQI
38AQI
23rd March 2025
35AQI
35AQI
24th March 2025
37AQI
37AQI
25th March 2025
40AQI
40AQI
26th March 2025
38AQI
38AQI
27th March 2025
42AQI
42AQI
28th March 2025
40AQI
40AQI
29th March 2025
41AQI
41AQI
30th March 2025
30AQI
30AQI
31st March 2025
31AQI
31AQI
1st April 2025
34AQI
34AQI
2nd April 2025
38AQI
38AQI
3rd April 2025
37AQI
37AQI
4th April 2025
40AQI
40AQI
5th April 2025
41AQI
41AQI
6th April 2025
32AQI
32AQI
7th April 2025
31AQI
31AQI
8th April 2025
33AQI
33AQI
9th April 2025
35AQI
35AQI
10th April 2025
42AQI
42AQI
11th April 2025
48AQI
48AQI
12th April 2025
42AQI
42AQI
13th April 2025
47AQI
47AQI
14th April 2025
41AQI
41AQI
15th April 2025
41AQI
41AQI
16th April 2025
43AQI
43AQI
17th April 2025
36AQI
36AQI
18th April 2025
22AQI
22AQI
19th April 2025
22AQI
22AQI
20th April 2025
22AQI
22AQI
21st April 2025
22AQI
22AQI
22nd April 2025
23AQI
23AQI
23rd April 2025
26AQI
26AQI
24th April 2025
23AQI
23AQI
25th April 2025
20AQI
20AQI
26th April 2025
20AQI
20AQI
27th April 2025
26AQI
26AQI
28th April 2025
33AQI
33AQI
29th April 2025
32AQI
32AQI
30th April 2025
29AQI
29AQI
1st May 2025
35AQI
35AQI
2nd May 2025
40AQI
40AQI
3rd May 2025
37AQI
37AQI
4th May 2025
37AQI
37AQI
5th May 2025
29AQI
29AQI
6th May 2025
22AQI
22AQI
7th May 2025
26AQI
26AQI
8th May 2025
23AQI
23AQI
9th May 2025
28AQI
28AQI
10th May 2025
28AQI
28AQI
11th May 2025
31AQI
31AQI
12th May 2025
27AQI
27AQI
13th May 2025
31AQI
31AQI
14th May 2025
27AQI
27AQI
15th May 2025
28AQI
28AQI
16th May 2025
20AQI
20AQI
17th May 2025
23AQI
23AQI
18th May 2025
27AQI
27AQI
19th May 2025
27AQI
27AQI
20th May 2025
31AQI
31AQI
21st May 2025
28AQI
28AQI
22nd May 2025
22AQI
22AQI
23rd May 2025
19AQI
19AQI
24th May 2025
20AQI
20AQI
25th May 2025
25AQI
25AQI
26th May 2025
27AQI
27AQI
27th May 2025
29AQI
29AQI
28th May 2025
27AQI
27AQI
29th May 2025
24AQI
24AQI
30th May 2025
26AQI
26AQI
31st May 2025
28AQI
28AQI
1st June 2025
29AQI
29AQI
2nd June 2025
29AQI
29AQI
3rd June 2025
28AQI
28AQI
4th June 2025
30AQI
30AQI
5th June 2025
32AQI
32AQI
6th June 2025
34AQI
34AQI
7th June 2025
38AQI
38AQI
8th June 2025
43AQI
43AQI
9th June 2025
50AQI
50AQI
10th June 2025
56AQI
56AQI
11th June 2025
59AQI
59AQI
12th June 2025
61AQI
61AQI
13th June 2025
57AQI
57AQI
14th June 2025
55AQI
55AQI
15th June 2025
55AQI
55AQI
16th June 2025
52AQI
52AQI
17th June 2025
46AQI
46AQI
18th June 2025
49AQI
49AQI
19th June 2025
50AQI
50AQI
20th June 2025
51AQI
51AQI
21st June 2025
43AQI
43AQI
22nd June 2025
43AQI
43AQI
23rd June 2025
44AQI
44AQI
24th June 2025
47AQI
47AQI
25th June 2025
52AQI
52AQI
26th June 2025
53AQI
53AQI
27th June 2025
49AQI
49AQI
28th June 2025
38AQI
38AQI
29th June 2025
34AQI
34AQI
30th June 2025
36AQI
36AQI
1st July 2025
37AQI
37AQI
2nd July 2025
35AQI
35AQI
3rd July 2025
33AQI
33AQI
4th July 2025
44AQI
44AQI
5th July 2025
45AQI
45AQI
6th July 2025
48AQI
48AQI
7th July 2025
35AQI
35AQI
8th July 2025
25AQI
25AQI
9th July 2025
20AQI
20AQI
10th July 2025
23AQI
23AQI
11th July 2025
26AQI
26AQI
12th July 2025
27AQI
27AQI
13th July 2025
28AQI
28AQI
14th July 2025
30AQI
30AQI
15th July 2025
34AQI
34AQI
16th July 2025
34AQI
34AQI
17th July 2025
32AQI
32AQI
18th July 2025
25AQI
25AQI
19th July 2025
27AQI
27AQI
20th July 2025
34AQI
34AQI
21st July 2025
35AQI
35AQI
22nd July 2025
32AQI
32AQI
23rd July 2025
27AQI
27AQI
24th July 2025
26AQI
26AQI
25th July 2025
26AQI
26AQI
26th July 2025
25AQI
25AQI
27th July 2025
22AQI
22AQI
28th July 2025
23AQI
23AQI
29th July 2025
20AQI
20AQI
30th July 2025
21AQI
21AQI
31st July 2025
24AQI
24AQI
1st August 2025
32AQI
32AQI
2nd August 2025
34AQI
34AQI
3rd August 2025
39AQI
39AQI
4th August 2025
33AQI
33AQI
5th August 2025
39AQI
39AQI
6th August 2025
44AQI
44AQI
7th August 2025
34AQI
34AQI
59AQI
66AQI
43AQI
33AQI
27AQI
45AQI
30AQI
36AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202543AQI
13
18
5
20
3
25
6
30
31
20
10
31
7
162
54
3
Highest AQI recorded in
February66AQI
Lowest AQI recorded in
May27AQI
202440AQI
1
1
5
2
2
12
29
1
31
27
17
9
31
13
17
15
16
183
46
Highest AQI recorded in
November52AQI
Lowest AQI recorded in
May25AQI
202338AQI
1
1
Highest AQI recorded in
March38AQI
Lowest AQI recorded in
March38AQI
202259AQI
4
18
7
4
16
2
1
1
26
3
26
4
23
8
20
10
11
14
2
1
91
97
12
1
Highest AQI recorded in
January87AQI
Lowest AQI recorded in
April39AQI
202148AQI
25
4
2
23
2
3
22
8
30
31
19
11
17
12
23
8
19
9
18
7
4
1
8
21
1
1
21
8
236
103
15
4
Highest AQI recorded in
December89AQI
Lowest AQI recorded in
April34AQI
202043AQI
8
5
1
11
8
20
28
1
21
10
24
7
22
8
25
5
17
6
5
2
24
5
2
200
55
8
2
Highest AQI recorded in
November57AQI
Lowest AQI recorded in
May32AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2022(Avg.)
59AQILeast Polluted Year Recorded
2023(Avg.)
38AQISaint Leo's annual 2025 AQI (43) shows an average percentage change of -4.2% (improved AQI) compared to previous years: 2020 (43), 2021 (48), 2022 (59), 2023 (38), 2024 (40).
