Grass Valley Street, Colfax, California, United States 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
Grass Valley Street, Colfax, California, United States
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
4th Aug 2025
39AQILowest AQI recorded on
1st Aug 2025
27AQISame Day Analysis (7th August ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 29 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 10th Aug - 11th Aug 2025
Grass Valley Street, Colfax, California, United States
AQI
Day
Night
.
6 AM10th Aug 2025
8 PM
5 AM11th Aug 2025
Day time
Avg. Highest Time
7AM10th Aug
38AQI
Avg. Lowest Time
6PM10th Aug
30AQI
Night time
Avg. Highest Time
1AM11th Aug
29AQI
Avg. Lowest Time
11PM10th Aug
26AQI
In the last 24 hours,
Grass Valley Street's AQI reached its highest point of 38 at 7 AM during the Day, while the lowest point, undefined, was recorded at 5 AM during the Night between 10th Aug and 11th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Grass Valley Street, Colfax, California, United States
JulAug
12th - 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 - 09th09th - 10th10th - 11th11th
Day
Night
12th Jul 2025606 AMAQI
12th Jul 2025617 AMAQI
12th Jul 2025668 AMAQI
12th Jul 2025639 AMAQI
12th Jul 20256010 AMAQI
12th Jul 20256111 AMAQI
12th Jul 20256012 PMAQI
12th Jul 2025611 PMAQI
12th Jul 2025602 PMAQI
12th Jul 2025613 PMAQI
12th Jul 2025624 PMAQI
12th Jul 2025605 PMAQI
12th Jul 2025586 PMAQI
12th Jul 2025607 PMAQI
12th Jul 2025598 PMAQI
12th Jul 2025579 PMAQI
12th Jul 20255810 PMAQI
12th Jul 20255811 PMAQI
13th Jul 20255712 AMAQI
13th Jul 2025591 AMAQI
13th Jul 2025592 AMAQI
13th Jul 2025603 AMAQI
13th Jul 2025624 AMAQI
13th Jul 2025605 AMAQI
30°C24/38°C
13th Jul 2025606 AMAQI
13th Jul 2025587 AMAQI
13th Jul 2025608 AMAQI
13th Jul 2025629 AMAQI
13th Jul 20256410 AMAQI
13th Jul 20256011 AMAQI
13th Jul 20256012 PMAQI
13th Jul 2025621 PMAQI
13th Jul 2025612 PMAQI
13th Jul 2025603 PMAQI
13th Jul 2025604 PMAQI
13th Jul 2025605 PMAQI
13th Jul 2025586 PMAQI
13th Jul 2025587 PMAQI
13th Jul 2025588 PMAQI
13th Jul 2025559 PMAQI
13th Jul 20255610 PMAQI
13th Jul 20255411 PMAQI
14th Jul 20255412 AMAQI
14th Jul 2025521 AMAQI
14th Jul 2025522 AMAQI
14th Jul 2025523 AMAQI
14th Jul 2025514 AMAQI
14th Jul 2025485 AMAQI
30°C23/38°C
14th Jul 2025506 AMAQI
14th Jul 2025557 AMAQI
14th Jul 2025548 AMAQI
14th Jul 2025559 AMAQI
14th Jul 20255610 AMAQI
14th Jul 20255811 AMAQI
14th Jul 20255912 PMAQI
14th Jul 2025581 PMAQI
14th Jul 2025582 PMAQI
14th Jul 2025563 PMAQI
14th Jul 2025564 PMAQI
14th Jul 2025545 PMAQI
14th Jul 2025536 PMAQI
14th Jul 2025547 PMAQI
14th Jul 2025538 PMAQI
14th Jul 2025499 PMAQI
14th Jul 20255110 PMAQI
14th Jul 20254711 PMAQI
15th Jul 20254612 AMAQI
15th Jul 2025461 AMAQI
15th Jul 2025502 AMAQI
15th Jul 2025503 AMAQI
15th Jul 2025484 AMAQI
15th Jul 2025525 AMAQI
31°C24/38°C
15th Jul 2025506 AMAQI
15th Jul 2025487 AMAQI
15th Jul 2025458 AMAQI
15th Jul 2025429 AMAQI
15th Jul 20254010 AMAQI
15th Jul 20254211 AMAQI
15th Jul 20254312 PMAQI
15th Jul 2025421 PMAQI
15th Jul 2025462 PMAQI
15th Jul 2025453 PMAQI
15th Jul 2025464 PMAQI
15th Jul 2025485 PMAQI
15th Jul 2025516 PMAQI
15th Jul 2025467 PMAQI
15th Jul 2025468 PMAQI
15th Jul 2025469 PMAQI
15th Jul 20254410 PMAQI
15th Jul 20254411 PMAQI
16th Jul 20254712 AMAQI
16th Jul 2025461 AMAQI
16th Jul 2025442 AMAQI
16th Jul 2025403 AMAQI
16th Jul 2025294 AMAQI
16th Jul 2025285 AMAQI
28°C21/36°C
16th Jul 2025316 AMAQI
16th Jul 2025417 AMAQI
16th Jul 2025478 AMAQI
16th Jul 2025489 AMAQI
16th Jul 20254310 AMAQI
16th Jul 20254411 AMAQI
16th Jul 20254312 PMAQI
16th Jul 2025431 PMAQI
16th Jul 2025462 PMAQI
16th Jul 2025483 PMAQI
16th Jul 2025464 PMAQI
16th Jul 2025455 PMAQI
16th Jul 2025466 PMAQI
16th Jul 2025447 PMAQI
16th Jul 2025428 PMAQI
16th Jul 2025349 PMAQI
16th Jul 20253010 PMAQI
16th Jul 20252811 PMAQI
17th Jul 20252812 AMAQI
17th Jul 2025291 AMAQI
17th Jul 2025372 AMAQI
17th Jul 2025363 AMAQI
17th Jul 2025304 AMAQI
17th Jul 2025325 AMAQI
25°C19/33°C
17th Jul 2025366 AMAQI
17th Jul 2025427 AMAQI
17th Jul 2025408 AMAQI
17th Jul 2025319 AMAQI
17th Jul 20253210 AMAQI
17th Jul 20253911 AMAQI
17th Jul 20254112 PMAQI
17th Jul 2025361 PMAQI
17th Jul 2025382 PMAQI
17th Jul 2025353 PMAQI
17th Jul 2025344 PMAQI
17th Jul 2025345 PMAQI
17th Jul 2025376 PMAQI
17th Jul 2025357 PMAQI
17th Jul 2025328 PMAQI
17th Jul 2025329 PMAQI
17th Jul 20253410 PMAQI
17th Jul 20253711 PMAQI
18th Jul 20253912 AMAQI
18th Jul 2025381 AMAQI
18th Jul 2025382 AMAQI
18th Jul 2025383 AMAQI
18th Jul 2025354 AMAQI
18th Jul 2025315 AMAQI
25°C18/33°C
18th Jul 2025336 AMAQI
18th Jul 2025367 AMAQI
18th Jul 2025358 AMAQI
18th Jul 2025359 AMAQI
18th Jul 20253910 AMAQI
18th Jul 20254311 AMAQI
18th Jul 20254412 PMAQI
18th Jul 2025461 PMAQI
18th Jul 2025452 PMAQI
18th Jul 2025413 PMAQI
18th Jul 2025424 PMAQI
18th Jul 2025415 PMAQI
18th Jul 2025446 PMAQI
18th Jul 2025387 PMAQI
18th Jul 2025388 PMAQI
18th Jul 2025369 PMAQI
18th Jul 20253310 PMAQI
18th Jul 20253611 PMAQI
19th Jul 20254012 AMAQI
19th Jul 2025421 AMAQI
19th Jul 2025402 AMAQI
19th Jul 2025413 AMAQI
19th Jul 2025424 AMAQI
19th Jul 2025415 AMAQI
27°C19/35°C
19th Jul 2025366 AMAQI
19th Jul 2025347 AMAQI
19th Jul 2025338 AMAQI
19th Jul 2025339 AMAQI
19th Jul 20253210 AMAQI
19th Jul 20253311 AMAQI
19th Jul 20253512 PMAQI
19th Jul 2025321 PMAQI
19th Jul 2025292 PMAQI
19th Jul 2025283 PMAQI
19th Jul 2025284 PMAQI
19th Jul 2025305 PMAQI
19th Jul 2025306 PMAQI
19th Jul 2025347 PMAQI
19th Jul 2025378 PMAQI
19th Jul 2025399 PMAQI
19th Jul 20253810 PMAQI
19th Jul 20253311 PMAQI
20th Jul 20253112 AMAQI
20th Jul 2025371 AMAQI
20th Jul 2025382 AMAQI
20th Jul 2025403 AMAQI
20th Jul 2025444 AMAQI
20th Jul 2025385 AMAQI
27°C20/36°C
20th Jul 2025286 AMAQI
20th Jul 2025267 AMAQI
20th Jul 2025278 AMAQI
20th Jul 2025309 AMAQI
20th Jul 20252810 AMAQI
20th Jul 20252911 AMAQI
20th Jul 20253012 PMAQI
20th Jul 2025301 PMAQI
20th Jul 2025322 PMAQI
20th Jul 2025363 PMAQI
20th Jul 2025364 PMAQI
20th Jul 2025375 PMAQI
20th Jul 2025366 PMAQI
20th Jul 2025347 PMAQI
20th Jul 2025338 PMAQI
20th Jul 2025329 PMAQI
20th Jul 20252610 PMAQI
20th Jul 20252611 PMAQI
21st Jul 20252912 AMAQI
21st Jul 2025321 AMAQI
21st Jul 2025372 AMAQI
21st Jul 2025363 AMAQI
21st Jul 2025344 AMAQI
21st Jul 2025325 AMAQI
27°C20/34°C
21st Jul 2025286 AMAQI
21st Jul 2025267 AMAQI
21st Jul 2025258 AMAQI
21st Jul 2025329 AMAQI
21st Jul 20254110 AMAQI
21st Jul 20254911 AMAQI
21st Jul 20254512 PMAQI
21st Jul 2025401 PMAQI
21st Jul 2025322 PMAQI
21st Jul 2025323 PMAQI
21st Jul 2025314 PMAQI
21st Jul 2025275 PMAQI
21st Jul 2025236 PMAQI
21st Jul 2025297 PMAQI
21st Jul 2025298 PMAQI
21st Jul 2025209 PMAQI
21st Jul 20252210 PMAQI
21st Jul 20252211 PMAQI
22nd Jul 20252412 AMAQI
22nd Jul 2025271 AMAQI
22nd Jul 2025332 AMAQI
22nd Jul 2025333 AMAQI
22nd Jul 2025264 AMAQI
22nd Jul 2025205 AMAQI
22°C17/29°C
22nd Jul 2025206 AMAQI
22nd Jul 2025217 AMAQI
22nd Jul 2025238 AMAQI
22nd Jul 2025249 AMAQI
22nd Jul 20252410 AMAQI
22nd Jul 20252511 AMAQI
22nd Jul 20252612 PMAQI
22nd Jul 2025321 PMAQI
22nd Jul 2025322 PMAQI
22nd Jul 2025303 PMAQI
22nd Jul 2025264 PMAQI
22nd Jul 2025195 PMAQI
22nd Jul 2025196 PMAQI
22nd Jul 2025217 PMAQI
22nd Jul 2025218 PMAQI
22nd Jul 2025189 PMAQI
22nd Jul 20251810 PMAQI
22nd Jul 20251711 PMAQI
23rd Jul 20251712 AMAQI
23rd Jul 2025191 AMAQI
23rd Jul 2025182 AMAQI
23rd Jul 2025193 AMAQI
23rd Jul 2025184 AMAQI
23rd Jul 2025175 AMAQI
21°C15/28°C
23rd Jul 2025196 AMAQI
23rd Jul 2025237 AMAQI
23rd Jul 2025208 AMAQI
23rd Jul 2025209 AMAQI
23rd Jul 20252110 AMAQI
23rd Jul 20252211 AMAQI
23rd Jul 20252312 PMAQI
23rd Jul 2025241 PMAQI
23rd Jul 2025272 PMAQI
23rd Jul 2025263 PMAQI
23rd Jul 2025224 PMAQI
23rd Jul 2025195 PMAQI
23rd Jul 2025196 PMAQI
23rd Jul 2025187 PMAQI
23rd Jul 2025188 PMAQI
23rd Jul 2025179 PMAQI
23rd Jul 20251610 PMAQI
23rd Jul 20252011 PMAQI
24th Jul 20252412 AMAQI
24th Jul 2025231 AMAQI
24th Jul 2025232 AMAQI
24th Jul 2025233 AMAQI
24th Jul 2025214 AMAQI
24th Jul 2025185 AMAQI
22°C16/30°C
24th Jul 2025146 AMAQI
24th Jul 2025167 AMAQI
24th Jul 2025188 AMAQI
24th Jul 2025249 AMAQI
24th Jul 20252110 AMAQI
24th Jul 20252011 AMAQI
24th Jul 20252512 PMAQI
24th Jul 2025301 PMAQI
24th Jul 2025302 PMAQI
24th Jul 2025303 PMAQI
24th Jul 2025254 PMAQI
24th Jul 2025205 PMAQI
24th Jul 2025226 PMAQI
24th Jul 2025227 PMAQI
24th Jul 2025228 PMAQI
24th Jul 2025219 PMAQI
24th Jul 20252310 PMAQI
24th Jul 20252011 PMAQI
25th Jul 20251812 AMAQI
25th Jul 2025161 AMAQI
25th Jul 2025172 AMAQI
25th Jul 2025183 AMAQI
25th Jul 2025244 AMAQI
25th Jul 2025285 AMAQI
23°C16/31°C
25th Jul 2025226 AMAQI
25th Jul 2025217 AMAQI
25th Jul 2025298 AMAQI
25th Jul 2025319 AMAQI
25th Jul 20253010 AMAQI
25th Jul 20253411 AMAQI
25th Jul 20253012 PMAQI
25th Jul 2025231 PMAQI
25th Jul 2025212 PMAQI
25th Jul 2025213 PMAQI
25th Jul 2025224 PMAQI
25th Jul 2025245 PMAQI
25th Jul 2025216 PMAQI
25th Jul 2025217 PMAQI
25th Jul 2025238 PMAQI
25th Jul 2025249 PMAQI
25th Jul 20252410 PMAQI
25th Jul 20252411 PMAQI
26th Jul 20252612 AMAQI
26th Jul 2025221 AMAQI
26th Jul 2025182 AMAQI
26th Jul 2025203 AMAQI
26th Jul 2025254 AMAQI
26th Jul 2025295 AMAQI
23°C17/31°C
26th Jul 2025306 AMAQI
26th Jul 2025267 AMAQI
26th Jul 2025248 AMAQI
26th Jul 2025229 AMAQI
26th Jul 20251910 AMAQI
26th Jul 20252011 AMAQI
26th Jul 20253012 PMAQI
26th Jul 2025301 PMAQI
26th Jul 2025332 PMAQI
26th Jul 2025293 PMAQI
26th Jul 2025254 PMAQI
26th Jul 2025205 PMAQI
26th Jul 2025176 PMAQI
26th Jul 2025207 PMAQI
26th Jul 2025248 PMAQI
26th Jul 2025189 PMAQI
26th Jul 20251710 PMAQI
26th Jul 20251911 PMAQI
27th Jul 20252112 AMAQI
27th Jul 2025231 AMAQI
27th Jul 2025242 AMAQI
27th Jul 2025243 AMAQI
27th Jul 2025284 AMAQI
27th Jul 2025285 AMAQI
23°C16/29°C
27th Jul 2025296 AMAQI
27th Jul 2025347 AMAQI
27th Jul 2025318 AMAQI
27th Jul 2025249 AMAQI
27th Jul 20252210 AMAQI
27th Jul 20252311 AMAQI
27th Jul 20252612 PMAQI
27th Jul 2025221 PMAQI
27th Jul 2025182 PMAQI
27th Jul 2025213 PMAQI
27th Jul 2025234 PMAQI
27th Jul 2025215 PMAQI
27th Jul 2025206 PMAQI
27th Jul 2025227 PMAQI
27th Jul 2025228 PMAQI
27th Jul 2025209 PMAQI
27th Jul 20251910 PMAQI
27th Jul 20251911 PMAQI
28th Jul 20252012 AMAQI
28th Jul 2025231 AMAQI
28th Jul 2025232 AMAQI
28th Jul 2025243 AMAQI
28th Jul 2025304 AMAQI
28th Jul 2025315 AMAQI
24°C17/31°C
28th Jul 2025276 AMAQI
28th Jul 2025307 AMAQI
28th Jul 2025358 AMAQI
28th Jul 2025349 AMAQI
28th Jul 20253010 AMAQI
28th Jul 20252811 AMAQI
28th Jul 20252412 PMAQI
28th Jul 2025221 PMAQI
28th Jul 2025222 PMAQI
28th Jul 2025383 PMAQI
28th Jul 2025314 PMAQI
28th Jul 2025265 PMAQI
28th Jul 2025236 PMAQI
28th Jul 2025247 PMAQI
28th Jul 2025238 PMAQI
28th Jul 2025189 PMAQI
28th Jul 20251810 PMAQI
28th Jul 20251811 PMAQI
29th Jul 20251812 AMAQI
29th Jul 2025231 AMAQI
29th Jul 2025262 AMAQI
29th Jul 2025293 AMAQI
29th Jul 2025284 AMAQI
29th Jul 2025245 AMAQI
26°C19/34°C
29th Jul 2025306 AMAQI
29th Jul 2025297 AMAQI
29th Jul 2025278 AMAQI
29th Jul 2025289 AMAQI
29th Jul 20252510 AMAQI
29th Jul 20252211 AMAQI
29th Jul 20252412 PMAQI
29th Jul 2025311 PMAQI
29th Jul 2025312 PMAQI
29th Jul 2025243 PMAQI
29th Jul 2025214 PMAQI
29th Jul 2025225 PMAQI
29th Jul 2025186 PMAQI
29th Jul 2025237 PMAQI
29th Jul 2025238 PMAQI
29th Jul 2025249 PMAQI
29th Jul 20252810 PMAQI
29th Jul 20252911 PMAQI
30th Jul 20252812 AMAQI
30th Jul 2025241 AMAQI
30th Jul 2025222 AMAQI
30th Jul 2025223 AMAQI
30th Jul 2025254 AMAQI
30th Jul 2025265 AMAQI
27°C20/35°C
30th Jul 2025246 AMAQI
30th Jul 2025227 AMAQI
30th Jul 2025258 AMAQI
30th Jul 2025319 AMAQI
30th Jul 20253410 AMAQI
30th Jul 20253711 AMAQI
30th Jul 20253412 PMAQI
30th Jul 2025241 PMAQI
30th Jul 2025242 PMAQI
30th Jul 2025243 PMAQI
30th Jul 2025244 PMAQI
30th Jul 2025245 PMAQI
30th Jul 2025246 PMAQI
30th Jul 2025247 PMAQI
30th Jul 2025248 PMAQI
30th Jul 2025239 PMAQI
30th Jul 20252310 PMAQI
30th Jul 20252211 PMAQI
31st Jul 20252312 AMAQI
31st Jul 2025231 AMAQI
31st Jul 2025232 AMAQI
31st Jul 2025253 AMAQI
31st Jul 2025224 AMAQI
31st Jul 2025195 AMAQI
26°C20/34°C
31st Jul 2025256 AMAQI
31st Jul 2025257 AMAQI
31st Jul 2025238 AMAQI
31st Jul 2025269 AMAQI
31st Jul 20253210 AMAQI
31st Jul 20253311 AMAQI
31st Jul 20253412 PMAQI
31st Jul 2025361 PMAQI
31st Jul 2025362 PMAQI
31st Jul 2025323 PMAQI
31st Jul 2025274 PMAQI
31st Jul 2025275 PMAQI
31st Jul 2025276 PMAQI
31st Jul 2025227 PMAQI
31st Jul 2025218 PMAQI
31st Jul 2025209 PMAQI
31st Jul 20251810 PMAQI
31st Jul 20252011 PMAQI
1st Aug 20252112 AMAQI
1st Aug 2025261 AMAQI
1st Aug 2025292 AMAQI
1st Aug 2025333 AMAQI
1st Aug 2025324 AMAQI
1st Aug 2025305 AMAQI
27°C19/35°C
1st Aug 2025286 AMAQI
1st Aug 2025267 AMAQI
1st Aug 2025308 AMAQI
1st Aug 2025299 AMAQI
1st Aug 20253210 AMAQI
1st Aug 20253211 AMAQI
1st Aug 20253012 PMAQI
1st Aug 2025291 PMAQI
1st Aug 2025302 PMAQI
1st Aug 2025263 PMAQI
1st Aug 2025244 PMAQI
1st Aug 2025235 PMAQI
1st Aug 2025256 PMAQI
1st Aug 2025267 PMAQI
1st Aug 2025258 PMAQI
1st Aug 2025259 PMAQI
1st Aug 20252410 PMAQI
1st Aug 20252611 PMAQI
2nd Aug 20252212 AMAQI
2nd Aug 2025221 AMAQI
2nd Aug 2025282 AMAQI
2nd Aug 2025303 AMAQI
2nd Aug 2025354 AMAQI
2nd Aug 2025395 AMAQI
27°C20/36°C
2nd Aug 2025416 AMAQI
2nd Aug 2025407 AMAQI
2nd Aug 2025378 AMAQI
2nd Aug 2025339 AMAQI
2nd Aug 20252810 AMAQI
2nd Aug 20252611 AMAQI
2nd Aug 20252912 PMAQI
2nd Aug 2025311 PMAQI
2nd Aug 2025292 PMAQI
2nd Aug 2025293 PMAQI
2nd Aug 2025284 PMAQI
2nd Aug 2025345 PMAQI
2nd Aug 2025386 PMAQI
2nd Aug 2025297 PMAQI
2nd Aug 2025258 PMAQI
2nd Aug 2025279 PMAQI
2nd Aug 20252610 PMAQI
2nd Aug 20252611 PMAQI
3rd Aug 20252612 AMAQI
3rd Aug 2025251 AMAQI
3rd Aug 2025282 AMAQI
3rd Aug 2025283 AMAQI
3rd Aug 2025274 AMAQI
3rd Aug 2025275 AMAQI
27°C19/35°C
3rd Aug 2025316 AMAQI
3rd Aug 2025327 AMAQI
3rd Aug 2025328 AMAQI
3rd Aug 2025319 AMAQI
3rd Aug 20253410 AMAQI
3rd Aug 20253411 AMAQI
3rd Aug 20253612 PMAQI
3rd Aug 2025371 PMAQI
3rd Aug 2025342 PMAQI
3rd Aug 2025313 PMAQI
3rd Aug 2025314 PMAQI
3rd Aug 2025305 PMAQI
3rd Aug 2025306 PMAQI
3rd Aug 2025347 PMAQI
3rd Aug 2025348 PMAQI
3rd Aug 2025349 PMAQI
3rd Aug 20254210 PMAQI
3rd Aug 20253411 PMAQI
4th Aug 20253212 AMAQI
4th Aug 2025331 AMAQI
4th Aug 2025362 AMAQI
4th Aug 2025423 AMAQI
4th Aug 2025414 AMAQI
4th Aug 2025425 AMAQI
27°C19/34°C
4th Aug 2025366 AMAQI
4th Aug 2025307 AMAQI
4th Aug 2025298 AMAQI
4th Aug 2025299 AMAQI
4th Aug 20252810 AMAQI
4th Aug 20253711 AMAQI
4th Aug 20254812 PMAQI
4th Aug 2025721 PMAQI
4th Aug 2025652 PMAQI
4th Aug 2025803 PMAQI
4th Aug 2025604 PMAQI
4th Aug 2025465 PMAQI
4th Aug 2025346 PMAQI
4th Aug 2025347 PMAQI
4th Aug 2025318 PMAQI
4th Aug 2025309 PMAQI
4th Aug 20253110 PMAQI
4th Aug 20253111 PMAQI
5th Aug 20253312 AMAQI
5th Aug 2025401 AMAQI
5th Aug 2025492 AMAQI
5th Aug 2025423 AMAQI
5th Aug 2025404 AMAQI
5th Aug 2025375 AMAQI
25°C18/31°C
5th Aug 2025336 AMAQI
5th Aug 2025327 AMAQI
5th Aug 2025308 AMAQI
5th Aug 2025329 AMAQI
5th Aug 20253210 AMAQI
5th Aug 20253411 AMAQI
5th Aug 20253412 PMAQI
5th Aug 2025291 PMAQI
5th Aug 2025302 PMAQI
5th Aug 2025283 PMAQI
5th Aug 2025304 PMAQI
5th Aug 2025345 PMAQI
5th Aug 2025316 PMAQI
5th Aug 2025347 PMAQI
5th Aug 2025328 PMAQI
5th Aug 2025269 PMAQI
5th Aug 20252810 PMAQI
5th Aug 20252911 PMAQI
6th Aug 20252812 AMAQI
6th Aug 2025261 AMAQI
6th Aug 2025272 AMAQI
6th Aug 2025283 AMAQI
6th Aug 2025314 AMAQI
6th Aug 2025295 AMAQI
25°C18/32°C
6th Aug 2025306 AMAQI
6th Aug 2025267 AMAQI
6th Aug 2025328 AMAQI
6th Aug 2025329 AMAQI
6th Aug 20253510 AMAQI
6th Aug 20253611 AMAQI
6th Aug 20253612 PMAQI
6th Aug 2025341 PMAQI
6th Aug 2025342 PMAQI
6th Aug 2025303 PMAQI
6th Aug 2025264 PMAQI
6th Aug 2025225 PMAQI
6th Aug 2025186 PMAQI
6th Aug 2025277 PMAQI
6th Aug 2025238 PMAQI
6th Aug 2025189 PMAQI
6th Aug 20251910 PMAQI
6th Aug 20252011 PMAQI
7th Aug 20252312 AMAQI
7th Aug 2025261 AMAQI
7th Aug 2025302 AMAQI
7th Aug 2025323 AMAQI
7th Aug 2025324 AMAQI
7th Aug 2025325 AMAQI
27°C20/35°C
7th Aug 2025286 AMAQI
7th Aug 2025267 AMAQI
7th Aug 2025248 AMAQI
7th Aug 2025259 AMAQI
7th Aug 20252810 AMAQI
7th Aug 20253411 AMAQI
7th Aug 20253812 PMAQI
7th Aug 2025311 PMAQI
7th Aug 2025312 PMAQI
7th Aug 2025313 PMAQI
7th Aug 2025284 PMAQI
7th Aug 2025265 PMAQI
7th Aug 2025246 PMAQI
7th Aug 2025287 PMAQI
7th Aug 2025268 PMAQI
7th Aug 2025239 PMAQI
7th Aug 20252210 PMAQI
7th Aug 20252111 PMAQI
8th Aug 20252312 AMAQI
8th Aug 2025261 AMAQI
8th Aug 2025322 AMAQI
8th Aug 2025363 AMAQI
8th Aug 2025324 AMAQI
8th Aug 2025265 AMAQI
29°C22/36°C
8th Aug 2025306 AMAQI
8th Aug 2025327 AMAQI
8th Aug 2025328 AMAQI
8th Aug 2025359 AMAQI
8th Aug 20254010 AMAQI
8th Aug 20253811 AMAQI
8th Aug 20253412 PMAQI
8th Aug 2025341 PMAQI
8th Aug 2025342 PMAQI
8th Aug 2025313 PMAQI
8th Aug 2025284 PMAQI
8th Aug 2025255 PMAQI
8th Aug 2025266 PMAQI
8th Aug 2025267 PMAQI
8th Aug 2025268 PMAQI
8th Aug 2025259 PMAQI
8th Aug 20252510 PMAQI
8th Aug 20252711 PMAQI
9th Aug 20252712 AMAQI
9th Aug 2025261 AMAQI
9th Aug 2025272 AMAQI
9th Aug 2025303 AMAQI
9th Aug 2025324 AMAQI
9th Aug 2025305 AMAQI
30°C22/38°C
9th Aug 2025326 AMAQI
9th Aug 2025377 AMAQI
9th Aug 2025368 AMAQI
9th Aug 2025359 AMAQI
9th Aug 20253410 AMAQI
9th Aug 20253511 AMAQI
9th Aug 20253112 PMAQI
9th Aug 2025321 PMAQI
9th Aug 2025312 PMAQI
9th Aug 2025283 PMAQI
9th Aug 2025264 PMAQI
9th Aug 2025295 PMAQI
9th Aug 2025316 PMAQI
9th Aug 2025307 PMAQI
9th Aug 2025288 PMAQI
9th Aug 2025269 PMAQI
9th Aug 20252510 PMAQI
9th Aug 20252511 PMAQI
10th Aug 20253012 AMAQI
10th Aug 2025321 AMAQI
10th Aug 2025382 AMAQI
10th Aug 2025383 AMAQI
10th Aug 2025364 AMAQI
10th Aug 2025385 AMAQI
32°C24/39°C
10th Aug 2025376 AMAQI
10th Aug 2025387 AMAQI
10th Aug 2025388 AMAQI
10th Aug 2025359 AMAQI
10th Aug 20253310 AMAQI
10th Aug 20253411 AMAQI
10th Aug 20253512 PMAQI
10th Aug 2025321 PMAQI
10th Aug 2025362 PMAQI
10th Aug 2025363 PMAQI
10th Aug 2025364 PMAQI
10th Aug 2025325 PMAQI
10th Aug 2025306 PMAQI
10th Aug 2025347 PMAQI
10th Aug 2025348 PMAQI
10th Aug 2025279 PMAQI
10th Aug 20252810 PMAQI
10th Aug 20252611 PMAQI
11th Aug 20252812 AMAQI
11th Aug 2025291 AMAQI
32°C24/40°C
6 AM
1 PM
8 PM
1 AM
5 AM
--°C/°C
Day time
Avg. Highest Time
6 AM - 3 PM
35AQI
10 hours / Day
300 hours / Month
Avg. Lowest Time
4 PM - 8 PM
32AQI
5 hours / Day
150 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 6 AM to 3 PM (Avg. 35), while the lowest AQI was between 4 PM to 8 PM (Avg. 32).
Night time
Avg. Highest Time
2 AM - 5 AM
34AQI
4 hours / Day
120 hours / Month
Avg. Lowest Time
9 PM - 11 PM
29AQI
3 hours / Day
90 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 2 AM to 5 AM (Avg. 34), while the lowest AQI was between 9 PM to 11 PM (Avg. 29).
2025 Days Vs Air Quality
Grass Valley Street, Colfax, California, United States
2025
97%
131
3%
4
Total number of days with different AQI categories in last 223 days in 2025 (142 days remaining)
Good
131 DaysModerate
4 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 97%
Health Risk Level:
Very Low
In 2025, 97% of 223 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
Grass Valley Street, Colfax, California, United States
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 March 2025
25AQI
25AQI
2nd March 2025
23AQI
23AQI
3rd March 2025
24AQI
24AQI
4th March 2025
23AQI
23AQI
5th March 2025
23AQI
23AQI
6th March 2025
25AQI
25AQI
1st April 2025
21AQI
21AQI
2nd April 2025
18AQI
18AQI
3rd April 2025
17AQI
17AQI
4th April 2025
21AQI
21AQI
5th April 2025
17AQI
17AQI
6th April 2025
24AQI
24AQI
7th April 2025
24AQI
24AQI
8th April 2025
21AQI
21AQI
9th April 2025
20AQI
20AQI
10th April 2025
24AQI
24AQI
11th April 2025
30AQI
30AQI
12th April 2025
25AQI
25AQI
13th April 2025
30AQI
30AQI
14th April 2025
23AQI
23AQI
15th April 2025
30AQI
30AQI
16th April 2025
26AQI
26AQI
17th April 2025
29AQI
29AQI
18th April 2025
34AQI
34AQI
19th April 2025
19AQI
19AQI
20th April 2025
23AQI
23AQI
21st April 2025
26AQI
26AQI
22nd April 2025
30AQI
30AQI
23rd April 2025
29AQI
29AQI
24th April 2025
34AQI
34AQI
25th April 2025
27AQI
27AQI
26th April 2025
35AQI
35AQI
27th April 2025
16AQI
16AQI
28th April 2025
17AQI
17AQI
29th April 2025
23AQI
23AQI
30th April 2025
38AQI
38AQI
1st May 2025
23AQI
23AQI
2nd May 2025
29AQI
29AQI
3rd May 2025
27AQI
27AQI
4th May 2025
23AQI
23AQI
5th May 2025
15AQI
15AQI
6th May 2025
16AQI
16AQI
7th May 2025
25AQI
25AQI
8th May 2025
33AQI
33AQI
9th May 2025
28AQI
28AQI
10th May 2025
24AQI
24AQI
11th May 2025
27AQI
27AQI
12th May 2025
23AQI
23AQI
13th May 2025
27AQI
27AQI
14th May 2025
18AQI
18AQI
15th May 2025
17AQI
17AQI
16th May 2025
18AQI
18AQI
17th May 2025
27AQI
27AQI
18th May 2025
25AQI
25AQI
19th May 2025
21AQI
21AQI
20th May 2025
16AQI
16AQI
21st May 2025
23AQI
23AQI
22nd May 2025
25AQI
25AQI
23rd May 2025
21AQI
21AQI
24th May 2025
27AQI
27AQI
25th May 2025
33AQI
33AQI
26th May 2025
20AQI
20AQI
27th May 2025
19AQI
19AQI
28th May 2025
26AQI
26AQI
29th May 2025
31AQI
31AQI
30th May 2025
32AQI
32AQI
31st May 2025
33AQI
33AQI
1st June 2025
34AQI
34AQI
2nd June 2025
30AQI
30AQI
3rd June 2025
40AQI
40AQI
4th June 2025
41AQI
41AQI
5th June 2025
35AQI
35AQI
6th June 2025
40AQI
40AQI
7th June 2025
38AQI
38AQI
8th June 2025
41AQI
41AQI
9th June 2025
35AQI
35AQI
10th June 2025
43AQI
43AQI
11th June 2025
43AQI
43AQI
12th June 2025
42AQI
42AQI
13th June 2025
37AQI
37AQI
14th June 2025
29AQI
29AQI
15th June 2025
29AQI
29AQI
16th June 2025
33AQI
33AQI
17th June 2025
37AQI
37AQI
18th June 2025
38AQI
38AQI
19th June 2025
32AQI
32AQI
20th June 2025
37AQI
37AQI
21st June 2025
34AQI
34AQI
22nd June 2025
30AQI
30AQI
23rd June 2025
30AQI
30AQI
24th June 2025
31AQI
31AQI
25th June 2025
34AQI
34AQI
26th June 2025
35AQI
35AQI
27th June 2025
43AQI
43AQI
28th June 2025
36AQI
36AQI
29th June 2025
42AQI
42AQI
30th June 2025
37AQI
37AQI
1st July 2025
34AQI
34AQI
2nd July 2025
34AQI
34AQI
3rd July 2025
38AQI
38AQI
4th July 2025
32AQI
32AQI
5th July 2025
28AQI
28AQI
6th July 2025
28AQI
28AQI
7th July 2025
24AQI
24AQI
8th July 2025
34AQI
34AQI
9th July 2025
29AQI
29AQI
10th July 2025
33AQI
33AQI
11th July 2025
51AQI
51AQI
12th July 2025
60AQI
60AQI
13th July 2025
59AQI
59AQI
14th July 2025
53AQI
53AQI
15th July 2025
46AQI
46AQI
16th July 2025
40AQI
40AQI
17th July 2025
35AQI
35AQI
18th July 2025
38AQI
38AQI
19th July 2025
36AQI
36AQI
20th July 2025
33AQI
33AQI
21st July 2025
31AQI
31AQI
22nd July 2025
24AQI
24AQI
23rd July 2025
20AQI
20AQI
24th July 2025
22AQI
22AQI
25th July 2025
23AQI
23AQI
26th July 2025
23AQI
23AQI
27th July 2025
23AQI
23AQI
28th July 2025
25AQI
25AQI
29th July 2025
25AQI
25AQI
30th July 2025
25AQI
25AQI
31st July 2025
25AQI
25AQI
1st August 2025
27AQI
27AQI
2nd August 2025
30AQI
30AQI
3rd August 2025
32AQI
32AQI
4th August 2025
39AQI
39AQI
5th August 2025
34AQI
34AQI
6th August 2025
27AQI
27AQI
7th August 2025
29AQI
29AQI
24AQI
25AQI
24AQI
36AQI
33AQI
31AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202529AQI
6
30
31
30
27
4
7
131
4
Highest AQI recorded in
June36AQI
Lowest AQI recorded in
March24AQI
Most & Least Polluted Years Over the Last 1 Years
Most Polluted Year Recorded
2025(Avg.)
29AQILeast Polluted Year Recorded
2025(Avg.)
29AQIGrass Valley Street's annual 2025 AQI (29) shows an average percentage change of NaN% (improved AQI) compared to previous years: .
