Country Background
HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

Cortez, Colorado, 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

Cortez, Colorado, United States

2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
11th Aug 2025
56AQI
Lowest AQI recorded on
2nd Aug 2026
20AQI

Same Day Analysis (7th August):
On this day, AQI across the 2 years varied significantly: 2026 ranks 2nd highest AQI at 32 of Good air quality, showing improvement over 2025 on the same day.

Day & Night AQI Trend: 7th Aug - 8th Aug 2026

Cortez, Colorado, United States

AQI
Day
Night
.

6 AM7th Aug 2026

8 PM

5 AM8th Aug 2026

Day time
Avg. Highest Time
6AM7th Aug

42AQI

Avg. Lowest Time
8PM7th Aug

25AQI

Night time
Avg. Highest Time
11PM7th Aug

27AQI

Avg. Lowest Time
5AM8th Aug

25AQI

In the last 24 hours,

Cortez's AQI reached its highest point of 42 at 6 AM during the Day, while the lowest point, 25, was recorded at 5 AM during the Night between 7th Aug and 8th Aug 2026.

Day & Night AQI Trend : Jul - Aug 2026

Cortez, Colorado, United States

JulAug
10th - 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
10th Jul 2026236 AMAQI
10th Jul 2026247 AMAQI
10th Jul 2026288 AMAQI
10th Jul 2026309 AMAQI
10th Jul 20263410 AMAQI
10th Jul 20263111 AMAQI
10th Jul 20262712 PMAQI
10th Jul 2026281 PMAQI
10th Jul 2026202 PMAQI
10th Jul 2026183 PMAQI
10th Jul 2026144 PMAQI
10th Jul 2026165 PMAQI
10th Jul 2026156 PMAQI
10th Jul 2026167 PMAQI
10th Jul 2026158 PMAQI
10th Jul 2026209 PMAQI
10th Jul 20261910 PMAQI
10th Jul 20262411 PMAQI
11th Jul 20262412 AMAQI
11th Jul 2026251 AMAQI
11th Jul 2026242 AMAQI
11th Jul 2026243 AMAQI
11th Jul 2026194 AMAQI
11th Jul 2026185 AMAQI

26°C18/33°C

11th Jul 2026196 AMAQI
11th Jul 2026197 AMAQI
11th Jul 2026198 AMAQI
11th Jul 2026189 AMAQI
11th Jul 20262810 AMAQI
11th Jul 20262211 AMAQI
11th Jul 20262012 PMAQI
11th Jul 2026161 PMAQI
11th Jul 2026182 PMAQI
11th Jul 2026183 PMAQI
11th Jul 2026204 PMAQI
11th Jul 2026195 PMAQI
11th Jul 2026286 PMAQI
11th Jul 2026267 PMAQI
11th Jul 2026268 PMAQI
11th Jul 2026219 PMAQI
11th Jul 20261910 PMAQI
11th Jul 20262111 PMAQI
12th Jul 20262212 AMAQI
12th Jul 2026241 AMAQI
12th Jul 2026282 AMAQI
12th Jul 2026303 AMAQI
12th Jul 2026324 AMAQI
12th Jul 2026315 AMAQI

27°C17/35°C

12th Jul 2026286 AMAQI
12th Jul 2026297 AMAQI
12th Jul 2026258 AMAQI
12th Jul 2026269 AMAQI
12th Jul 20262710 AMAQI
12th Jul 20262311 AMAQI
12th Jul 20263012 PMAQI
12th Jul 2026181 PMAQI
12th Jul 2026182 PMAQI
12th Jul 2026173 PMAQI
12th Jul 2026164 PMAQI
12th Jul 2026205 PMAQI
12th Jul 2026216 PMAQI
12th Jul 2026197 PMAQI
12th Jul 2026228 PMAQI
12th Jul 2026279 PMAQI
12th Jul 20262410 PMAQI
12th Jul 20262311 PMAQI
13th Jul 20262212 AMAQI
13th Jul 2026181 AMAQI
13th Jul 2026212 AMAQI
13th Jul 2026203 AMAQI
13th Jul 2026214 AMAQI
13th Jul 2026155 AMAQI

26°C19/33°C

13th Jul 2026126 AMAQI
13th Jul 202697 AMAQI
13th Jul 2026108 AMAQI
13th Jul 2026109 AMAQI
13th Jul 20261210 AMAQI
13th Jul 20261211 AMAQI
13th Jul 20261212 PMAQI
13th Jul 2026121 PMAQI
13th Jul 2026122 PMAQI
13th Jul 2026123 PMAQI
13th Jul 2026144 PMAQI
13th Jul 2026195 PMAQI
13th Jul 2026256 PMAQI
13th Jul 2026317 PMAQI
13th Jul 2026298 PMAQI
13th Jul 2026269 PMAQI
13th Jul 20262410 PMAQI
13th Jul 20261911 PMAQI
14th Jul 20261812 AMAQI
14th Jul 2026191 AMAQI
14th Jul 2026182 AMAQI
14th Jul 2026183 AMAQI
14th Jul 2026194 AMAQI
14th Jul 2026185 AMAQI

24°C19/32°C

14th Jul 2026186 AMAQI
14th Jul 2026187 AMAQI
14th Jul 2026188 AMAQI
14th Jul 2026229 AMAQI
14th Jul 20262210 AMAQI
14th Jul 20261811 AMAQI
14th Jul 20261812 PMAQI
14th Jul 2026171 PMAQI
14th Jul 2026172 PMAQI
14th Jul 2026173 PMAQI
14th Jul 2026304 PMAQI
14th Jul 2026295 PMAQI
14th Jul 2026306 PMAQI
14th Jul 2026337 PMAQI
14th Jul 2026388 PMAQI
14th Jul 2026369 PMAQI
14th Jul 20263510 PMAQI
14th Jul 20262811 PMAQI
15th Jul 20262612 AMAQI
15th Jul 2026241 AMAQI
15th Jul 2026232 AMAQI
15th Jul 2026243 AMAQI
15th Jul 2026224 AMAQI
15th Jul 2026285 AMAQI

25°C18/32°C

15th Jul 2026186 AMAQI
15th Jul 2026187 AMAQI
15th Jul 2026198 AMAQI
15th Jul 2026209 AMAQI
15th Jul 20262210 AMAQI
15th Jul 20262011 AMAQI
15th Jul 20261812 PMAQI
15th Jul 2026181 PMAQI
15th Jul 2026162 PMAQI
15th Jul 2026143 PMAQI
15th Jul 2026144 PMAQI
15th Jul 2026165 PMAQI
15th Jul 2026196 PMAQI
15th Jul 2026187 PMAQI
15th Jul 2026218 PMAQI
15th Jul 2026249 PMAQI
15th Jul 20262610 PMAQI
15th Jul 20263011 PMAQI
16th Jul 20262812 AMAQI
16th Jul 2026241 AMAQI
16th Jul 2026202 AMAQI
16th Jul 2026193 AMAQI
16th Jul 2026184 AMAQI
16th Jul 2026255 AMAQI

23°C17/31°C

16th Jul 2026236 AMAQI
16th Jul 2026237 AMAQI
16th Jul 2026188 AMAQI
16th Jul 2026189 AMAQI
16th Jul 20261810 AMAQI
16th Jul 20261811 AMAQI
16th Jul 20261712 PMAQI
16th Jul 2026151 PMAQI
16th Jul 2026142 PMAQI
16th Jul 2026143 PMAQI
16th Jul 2026164 PMAQI
16th Jul 2026185 PMAQI
16th Jul 2026176 PMAQI
16th Jul 2026157 PMAQI
16th Jul 2026138 PMAQI
16th Jul 2026159 PMAQI
16th Jul 20261410 PMAQI
16th Jul 20261711 PMAQI
17th Jul 20261412 AMAQI
17th Jul 2026161 AMAQI
17th Jul 2026192 AMAQI
17th Jul 2026173 AMAQI
17th Jul 2026164 AMAQI
17th Jul 2026175 AMAQI

21°C15/29°C

17th Jul 2026216 AMAQI
17th Jul 2026217 AMAQI
17th Jul 2026218 AMAQI
17th Jul 2026169 AMAQI
17th Jul 20262110 AMAQI
17th Jul 20261711 AMAQI
17th Jul 20261712 PMAQI
17th Jul 2026171 PMAQI
17th Jul 2026172 PMAQI
17th Jul 2026253 PMAQI
17th Jul 2026214 PMAQI
17th Jul 2026255 PMAQI
17th Jul 2026216 PMAQI
17th Jul 2026107 PMAQI
17th Jul 2026178 PMAQI
17th Jul 2026179 PMAQI
17th Jul 20261910 PMAQI
17th Jul 20261711 PMAQI
18th Jul 20262112 AMAQI
18th Jul 2026171 AMAQI
18th Jul 2026172 AMAQI
18th Jul 2026173 AMAQI
18th Jul 2026144 AMAQI
18th Jul 2026125 AMAQI

23°C17/30°C

18th Jul 2026116 AMAQI
18th Jul 2026177 AMAQI
18th Jul 2026178 AMAQI
18th Jul 2026179 AMAQI
18th Jul 20261710 AMAQI
18th Jul 20261711 AMAQI
18th Jul 20261712 PMAQI
18th Jul 2026171 PMAQI
18th Jul 2026232 PMAQI
18th Jul 2026173 PMAQI
18th Jul 2026194 PMAQI
18th Jul 2026165 PMAQI
18th Jul 2026146 PMAQI
18th Jul 2026127 PMAQI
18th Jul 2026128 PMAQI
18th Jul 2026129 PMAQI
18th Jul 20261210 PMAQI
18th Jul 20261411 PMAQI
19th Jul 20261512 AMAQI
19th Jul 2026121 AMAQI
19th Jul 2026122 AMAQI
19th Jul 2026173 AMAQI
19th Jul 2026144 AMAQI
19th Jul 2026145 AMAQI

21°C16/30°C

19th Jul 2026216 AMAQI
19th Jul 2026167 AMAQI
19th Jul 2026178 AMAQI
19th Jul 2026169 AMAQI
19th Jul 20261810 AMAQI
19th Jul 20262111 AMAQI
19th Jul 20261712 PMAQI
19th Jul 2026171 PMAQI
19th Jul 2026142 PMAQI
19th Jul 2026123 PMAQI
19th Jul 2026174 PMAQI
19th Jul 2026195 PMAQI
19th Jul 2026176 PMAQI
19th Jul 2026167 PMAQI
19th Jul 2026218 PMAQI
19th Jul 2026179 PMAQI
19th Jul 20261710 PMAQI
19th Jul 20261711 PMAQI
20th Jul 20261712 AMAQI
20th Jul 2026171 AMAQI
20th Jul 2026172 AMAQI
20th Jul 2026103 AMAQI
20th Jul 2026124 AMAQI
20th Jul 2026175 AMAQI

23°C17/31°C

20th Jul 2026176 AMAQI
20th Jul 2026287 AMAQI
20th Jul 2026198 AMAQI
20th Jul 2026259 AMAQI
20th Jul 20262110 AMAQI
20th Jul 20261711 AMAQI
20th Jul 20261712 PMAQI
20th Jul 2026161 PMAQI
20th Jul 2026152 PMAQI
20th Jul 2026173 PMAQI
20th Jul 2026174 PMAQI
20th Jul 2026175 PMAQI
20th Jul 2026176 PMAQI
20th Jul 2026177 PMAQI
20th Jul 2026188 PMAQI
20th Jul 20261810 PMAQI
20th Jul 20261811 PMAQI
21st Jul 20261612 AMAQI
21st Jul 2026211 AMAQI
21st Jul 2026202 AMAQI
21st Jul 2026173 AMAQI
21st Jul 2026174 AMAQI
21st Jul 2026215 AMAQI

25°C17/32°C

21st Jul 2026236 AMAQI
21st Jul 2026217 AMAQI
21st Jul 2026238 AMAQI
21st Jul 2026259 AMAQI
21st Jul 20262510 AMAQI
21st Jul 20262711 AMAQI
21st Jul 20261612 PMAQI
21st Jul 2026231 PMAQI
21st Jul 2026232 PMAQI
21st Jul 2026233 PMAQI
21st Jul 2026254 PMAQI
21st Jul 2026215 PMAQI
21st Jul 2026216 PMAQI
21st Jul 2026327 PMAQI
21st Jul 2026248 PMAQI
21st Jul 2026229 PMAQI
21st Jul 20262310 PMAQI
21st Jul 20261711 PMAQI
22nd Jul 20262312 AMAQI
22nd Jul 2026181 AMAQI
22nd Jul 2026162 AMAQI
22nd Jul 2026163 AMAQI
22nd Jul 2026214 AMAQI
22nd Jul 2026215 AMAQI

23°C17/33°C

22nd Jul 2026186 AMAQI
22nd Jul 2026387 AMAQI
22nd Jul 2026388 AMAQI
22nd Jul 2026199 AMAQI
22nd Jul 20262110 AMAQI
22nd Jul 20262111 AMAQI
22nd Jul 20262412 PMAQI
22nd Jul 2026211 PMAQI
22nd Jul 2026192 PMAQI
22nd Jul 2026143 PMAQI
22nd Jul 2026184 PMAQI
22nd Jul 2026205 PMAQI
22nd Jul 2026126 PMAQI
22nd Jul 2026147 PMAQI
22nd Jul 2026178 PMAQI
22nd Jul 2026179 PMAQI
22nd Jul 20261410 PMAQI
22nd Jul 20261011 PMAQI
23rd Jul 20261112 AMAQI
23rd Jul 2026341 AMAQI
23rd Jul 2026342 AMAQI
23rd Jul 2026173 AMAQI
23rd Jul 2026174 AMAQI
23rd Jul 2026215 AMAQI

22°C17/29°C

23rd Jul 2026216 AMAQI
23rd Jul 2026257 AMAQI
23rd Jul 2026198 AMAQI
23rd Jul 2026179 AMAQI
23rd Jul 20263010 AMAQI
23rd Jul 20261711 AMAQI
23rd Jul 20261712 PMAQI
23rd Jul 2026211 PMAQI
23rd Jul 2026192 PMAQI
23rd Jul 2026213 PMAQI
23rd Jul 2026124 PMAQI
23rd Jul 2026175 PMAQI
23rd Jul 2026126 PMAQI
23rd Jul 2026147 PMAQI
23rd Jul 2026168 PMAQI
23rd Jul 2026179 PMAQI
23rd Jul 20261410 PMAQI
23rd Jul 20261711 PMAQI
24th Jul 20261712 AMAQI
24th Jul 2026161 AMAQI
24th Jul 2026192 AMAQI
24th Jul 2026213 AMAQI
24th Jul 2026174 AMAQI
24th Jul 2026175 AMAQI

24°C17/30°C

24th Jul 2026216 AMAQI
24th Jul 2026197 AMAQI
24th Jul 2026288 AMAQI
24th Jul 2026309 AMAQI
24th Jul 20262110 AMAQI
24th Jul 20261711 AMAQI
24th Jul 20261712 PMAQI
24th Jul 2026281 PMAQI
24th Jul 2026212 PMAQI
24th Jul 2026143 PMAQI
24th Jul 2026124 PMAQI
24th Jul 2026135 PMAQI
24th Jul 2026126 PMAQI
24th Jul 2026197 PMAQI
24th Jul 2026338 PMAQI
24th Jul 2026179 PMAQI
24th Jul 20261710 PMAQI
24th Jul 20262111 PMAQI
25th Jul 20262112 AMAQI
25th Jul 2026171 AMAQI
25th Jul 2026172 AMAQI
25th Jul 2026283 AMAQI
25th Jul 2026284 AMAQI
25th Jul 2026285 AMAQI

26°C19/34°C

25th Jul 2026176 AMAQI
25th Jul 2026367 AMAQI
25th Jul 202698 AMAQI
25th Jul 2026129 AMAQI
25th Jul 20261010 AMAQI
25th Jul 20261211 AMAQI
25th Jul 20261112 PMAQI
25th Jul 2026101 PMAQI
25th Jul 2026102 PMAQI
25th Jul 2026143 PMAQI
25th Jul 2026114 PMAQI
25th Jul 2026145 PMAQI
25th Jul 2026166 PMAQI
25th Jul 2026167 PMAQI
25th Jul 2026128 PMAQI
25th Jul 2026149 PMAQI
25th Jul 20261210 PMAQI
25th Jul 20261211 PMAQI
26th Jul 20261012 AMAQI
26th Jul 2026251 AMAQI
26th Jul 2026252 AMAQI
26th Jul 2026213 AMAQI
26th Jul 2026244 AMAQI
26th Jul 2026215 AMAQI

25°C19/34°C

26th Jul 2026256 AMAQI
26th Jul 2026257 AMAQI
26th Jul 2026228 AMAQI
26th Jul 2026219 AMAQI
26th Jul 20261710 AMAQI
26th Jul 20261511 AMAQI
26th Jul 20261412 PMAQI
26th Jul 2026121 PMAQI
26th Jul 2026142 PMAQI
26th Jul 2026163 PMAQI
26th Jul 2026104 PMAQI
26th Jul 2026155 PMAQI
26th Jul 2026146 PMAQI
26th Jul 2026197 PMAQI
26th Jul 2026148 PMAQI
26th Jul 2026149 PMAQI
26th Jul 20261010 PMAQI
26th Jul 20261311 PMAQI
27th Jul 20261012 AMAQI
27th Jul 2026121 AMAQI
27th Jul 2026142 AMAQI
27th Jul 2026123 AMAQI
27th Jul 2026254 AMAQI
27th Jul 2026345 AMAQI

25°C20/33°C

27th Jul 2026336 AMAQI
27th Jul 202687 AMAQI
27th Jul 202698 AMAQI
27th Jul 2026179 AMAQI
27th Jul 20261710 AMAQI
27th Jul 20261011 AMAQI
27th Jul 20261412 PMAQI
27th Jul 2026121 PMAQI
27th Jul 2026112 PMAQI
27th Jul 2026123 PMAQI
27th Jul 2026194 PMAQI
27th Jul 2026175 PMAQI
27th Jul 2026146 PMAQI
27th Jul 2026107 PMAQI
27th Jul 2026178 PMAQI
27th Jul 2026129 PMAQI
27th Jul 20261610 PMAQI
27th Jul 20262311 PMAQI
28th Jul 20261412 AMAQI
28th Jul 2026161 AMAQI
28th Jul 2026192 AMAQI
28th Jul 2026213 AMAQI
28th Jul 2026234 AMAQI
28th Jul 2026125 AMAQI

26°C19/33°C

28th Jul 2026196 AMAQI
28th Jul 2026187 AMAQI
28th Jul 2026218 AMAQI
28th Jul 2026209 AMAQI
28th Jul 20262510 AMAQI
28th Jul 20262311 AMAQI
28th Jul 20262112 PMAQI
28th Jul 2026191 PMAQI
28th Jul 2026172 PMAQI
28th Jul 2026193 PMAQI
28th Jul 2026214 PMAQI
28th Jul 2026175 PMAQI
28th Jul 2026216 PMAQI
28th Jul 2026147 PMAQI
28th Jul 2026228 PMAQI
28th Jul 2026219 PMAQI
28th Jul 20261910 PMAQI
28th Jul 20261711 PMAQI
29th Jul 20261712 AMAQI
29th Jul 2026251 AMAQI
29th Jul 2026232 AMAQI
29th Jul 2026273 AMAQI
29th Jul 2026214 AMAQI
29th Jul 2026215 AMAQI

27°C20/34°C

29th Jul 2026506 AMAQI
29th Jul 2026177 AMAQI
29th Jul 2026178 AMAQI
29th Jul 2026199 AMAQI
29th Jul 20261710 AMAQI
29th Jul 20261611 AMAQI
29th Jul 20261412 PMAQI
29th Jul 2026191 PMAQI
29th Jul 2026302 PMAQI
29th Jul 2026173 PMAQI
29th Jul 2026164 PMAQI
29th Jul 2026125 PMAQI
29th Jul 2026146 PMAQI
29th Jul 2026137 PMAQI
29th Jul 2026258 PMAQI
29th Jul 2026149 PMAQI
29th Jul 20262810 PMAQI
29th Jul 20264611 PMAQI
30th Jul 20262512 AMAQI
30th Jul 2026211 AMAQI
30th Jul 2026162 AMAQI
30th Jul 2026213 AMAQI
30th Jul 2026294 AMAQI
30th Jul 2026165 AMAQI

26°C19/33°C

30th Jul 2026146 AMAQI
30th Jul 2026147 AMAQI
30th Jul 2026148 AMAQI
30th Jul 2026149 AMAQI
30th Jul 20262910 AMAQI
30th Jul 20261711 AMAQI
30th Jul 20261712 PMAQI
30th Jul 2026171 PMAQI
30th Jul 2026212 PMAQI
30th Jul 2026173 PMAQI
30th Jul 2026174 PMAQI
30th Jul 2026175 PMAQI
30th Jul 2026176 PMAQI
30th Jul 2026217 PMAQI
30th Jul 2026218 PMAQI
30th Jul 2026219 PMAQI
30th Jul 20262110 PMAQI
30th Jul 20262111 PMAQI
31st Jul 20261712 AMAQI
31st Jul 2026211 AMAQI
31st Jul 2026212 AMAQI
31st Jul 2026213 AMAQI
31st Jul 2026214 AMAQI
31st Jul 2026175 AMAQI

26°C18/33°C

31st Jul 2026196 AMAQI
31st Jul 2026197 AMAQI
31st Jul 2026178 AMAQI
31st Jul 2026219 AMAQI
31st Jul 20261710 AMAQI
31st Jul 20261711 AMAQI
31st Jul 20261712 PMAQI
31st Jul 2026211 PMAQI
31st Jul 2026102 PMAQI
31st Jul 2026173 PMAQI
31st Jul 2026174 PMAQI
31st Jul 2026175 PMAQI
31st Jul 2026216 PMAQI
31st Jul 2026197 PMAQI
31st Jul 2026218 PMAQI
31st Jul 2026239 PMAQI
31st Jul 20262110 PMAQI
31st Jul 20263111 PMAQI
1st Aug 20264412 AMAQI
1st Aug 2026181 AMAQI
1st Aug 2026172 AMAQI
1st Aug 2026213 AMAQI
1st Aug 2026214 AMAQI
1st Aug 2026215 AMAQI

27°C19/36°C

1st Aug 2026176 AMAQI
1st Aug 2026217 AMAQI
1st Aug 2026218 AMAQI
1st Aug 2026239 AMAQI
1st Aug 20262110 AMAQI
1st Aug 20261711 AMAQI
1st Aug 20261712 PMAQI
1st Aug 2026251 PMAQI
1st Aug 2026172 PMAQI
1st Aug 2026173 PMAQI
1st Aug 2026174 PMAQI
1st Aug 2026175 PMAQI
1st Aug 2026196 PMAQI
1st Aug 2026197 PMAQI
1st Aug 2026308 PMAQI
1st Aug 2026219 PMAQI
1st Aug 20261910 PMAQI
1st Aug 20261711 PMAQI
2nd Aug 20261712 AMAQI
2nd Aug 2026211 AMAQI
2nd Aug 2026172 AMAQI
2nd Aug 2026173 AMAQI
2nd Aug 2026174 AMAQI
2nd Aug 2026195 AMAQI

27°C19/35°C

2nd Aug 2026176 AMAQI
2nd Aug 2026177 AMAQI
2nd Aug 2026178 AMAQI
2nd Aug 2026179 AMAQI
2nd Aug 20262110 AMAQI
2nd Aug 20262111 AMAQI
2nd Aug 20262312 PMAQI
2nd Aug 2026211 PMAQI
2nd Aug 2026212 PMAQI
2nd Aug 2026233 PMAQI
2nd Aug 2026214 PMAQI
2nd Aug 2026195 PMAQI
2nd Aug 2026196 PMAQI
2nd Aug 2026177 PMAQI
2nd Aug 2026238 PMAQI
2nd Aug 2026189 PMAQI
2nd Aug 20262710 PMAQI
2nd Aug 20263111 PMAQI
3rd Aug 20263112 AMAQI
3rd Aug 2026311 AMAQI
3rd Aug 2026232 AMAQI
3rd Aug 2026253 AMAQI
3rd Aug 2026364 AMAQI
3rd Aug 2026215 AMAQI

27°C20/35°C

3rd Aug 2026216 AMAQI
3rd Aug 2026197 AMAQI
3rd Aug 2026238 AMAQI
3rd Aug 2026259 AMAQI
3rd Aug 20263110 AMAQI
3rd Aug 20262511 AMAQI
3rd Aug 20262912 PMAQI
3rd Aug 2026311 PMAQI
3rd Aug 2026212 PMAQI
3rd Aug 2026253 PMAQI
3rd Aug 2026254 PMAQI
3rd Aug 2026255 PMAQI
3rd Aug 2026146 PMAQI
3rd Aug 2026147 PMAQI
3rd Aug 2026198 PMAQI
3rd Aug 2026239 PMAQI
3rd Aug 20262110 PMAQI
3rd Aug 20262511 PMAQI
4th Aug 20262712 AMAQI
4th Aug 2026231 AMAQI
4th Aug 2026212 AMAQI
4th Aug 2026213 AMAQI
4th Aug 2026144 AMAQI
4th Aug 2026195 AMAQI

28°C20/35°C

4th Aug 2026196 AMAQI
4th Aug 2026217 AMAQI
4th Aug 2026258 AMAQI
4th Aug 2026369 AMAQI
4th Aug 20263310 AMAQI
4th Aug 20262911 AMAQI
4th Aug 20262512 PMAQI
4th Aug 2026271 PMAQI
4th Aug 2026312 PMAQI
4th Aug 2026403 PMAQI
4th Aug 2026404 PMAQI
4th Aug 2026425 PMAQI
4th Aug 2026446 PMAQI
4th Aug 2026337 PMAQI
4th Aug 2026338 PMAQI
4th Aug 2026259 PMAQI
4th Aug 20262310 PMAQI
4th Aug 20262711 PMAQI
5th Aug 20262912 AMAQI
5th Aug 2026271 AMAQI
5th Aug 2026212 AMAQI
5th Aug 2026233 AMAQI
5th Aug 2026254 AMAQI
5th Aug 2026175 AMAQI

27°C19/35°C

5th Aug 2026196 AMAQI
5th Aug 2026217 AMAQI
5th Aug 2026258 AMAQI
5th Aug 2026279 AMAQI
5th Aug 20263110 AMAQI
5th Aug 20263611 AMAQI
5th Aug 20263612 PMAQI
5th Aug 2026271 PMAQI
5th Aug 2026232 PMAQI
5th Aug 2026233 PMAQI
5th Aug 2026314 PMAQI
5th Aug 2026275 PMAQI
5th Aug 2026276 PMAQI
5th Aug 2026297 PMAQI
5th Aug 2026318 PMAQI
5th Aug 2026319 PMAQI
5th Aug 20263310 PMAQI
5th Aug 20263311 PMAQI
6th Aug 20263312 AMAQI
6th Aug 2026311 AMAQI
6th Aug 2026272 AMAQI
6th Aug 2026253 AMAQI
6th Aug 2026274 AMAQI
6th Aug 2026255 AMAQI

27°C18/35°C

6th Aug 2026256 AMAQI
6th Aug 2026297 AMAQI
6th Aug 2026318 AMAQI
6th Aug 2026299 AMAQI
6th Aug 20263310 AMAQI
6th Aug 20263611 AMAQI
6th Aug 20263312 PMAQI
6th Aug 2026291 PMAQI
6th Aug 2026312 PMAQI
6th Aug 2026253 PMAQI
6th Aug 2026274 PMAQI
6th Aug 2026295 PMAQI
6th Aug 2026296 PMAQI
6th Aug 2026257 PMAQI
6th Aug 2026258 PMAQI
6th Aug 2026239 PMAQI
6th Aug 20262510 PMAQI
6th Aug 20262511 PMAQI
7th Aug 20262512 AMAQI
7th Aug 2026311 AMAQI
7th Aug 2026312 AMAQI
7th Aug 2026363 AMAQI
7th Aug 2026334 AMAQI
7th Aug 2026385 AMAQI

27°C19/36°C

7th Aug 2026426 AMAQI
7th Aug 2026407 AMAQI
7th Aug 2026408 AMAQI
7th Aug 2026429 AMAQI
7th Aug 20264210 AMAQI
7th Aug 20264011 AMAQI
7th Aug 20263312 PMAQI
7th Aug 2026291 PMAQI
7th Aug 2026252 PMAQI
7th Aug 2026293 PMAQI
7th Aug 2026254 PMAQI
7th Aug 2026275 PMAQI
7th Aug 2026256 PMAQI
7th Aug 2026257 PMAQI
7th Aug 2026258 PMAQI
7th Aug 2026259 PMAQI
7th Aug 20262510 PMAQI
7th Aug 20262711 PMAQI
8th Aug 20262512 AMAQI
8th Aug 2026251 AMAQI
8th Aug 2026252 AMAQI
8th Aug 2026253 AMAQI
8th Aug 2026254 AMAQI
8th Aug 2026255 AMAQI

27°C18/36°C

8th Aug 2026256 AMAQI
6 AM
8th Aug 2026237 AMAQI
8th Aug 2026218 AMAQI
8th Aug 2026239 AMAQI
8th Aug 20262110 AMAQI
8th Aug 20262111 AMAQI
8th Aug 20261712 PMAQI
8th Aug 2026211 PMAQI
1 PM
8th Aug 2026232 PMAQI
8th Aug 2026193 PMAQI
8th Aug 2026194 PMAQI
8th Aug 2026195 PMAQI
8th Aug 2026216 PMAQI
8th Aug 2026217 PMAQI
8th Aug 2026218 PMAQI
8 PM
8th Aug 2026239 PMAQI
8th Aug 20262110 PMAQI
8th Aug 20262311 PMAQI
1 AM
5 AM

27°C18/35°C

Day time
Avg. Highest Time
10 AM

23AQI

1 hours / Day
30 hours / Month
Avg. Lowest Time
2 PM - 4 PM

19AQI

3 hours / Day
90 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 10 AM to 10 AM (Avg. 23), while the lowest AQI was between 2 PM to 4 PM (Avg. 19).
Night time
Avg. Highest Time
11 PM

22AQI

1 hours / Day
30 hours / Month
Avg. Lowest Time
12 AM - 10 PM

21AQI

8 hours / Day
240 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 11 PM to 11 PM (Avg. 22), while the lowest AQI was between 12 AM to 10 PM (Avg. 21).

2026 Days Vs Air Quality

Cortez, Colorado, United States

2026

100%

216

Total number of days with different AQI categories in last 220 days in 2026 (145 days remaining)

Good
216 Days
Moderate
0 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 100%

Health Risk Level:

Very Low

In 2026, 100% of 220 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

Cortez, Colorado, United States

AQI levels in 2026

AQI (US)
PM₂.₅
PM₁₀
CO
SO₂
NO₂
O₃
Sun.Mon.Tue.Wed.Thu.Fri.Sat.

Jan.

Feb.

Mar.

Apr.

May

Jun.

Jul.

Aug.

Sep.

Oct.

Nov.

Dec.

-1th undefined 2026
-1th undefined 2026
-1th undefined 2026
-1th undefined 2026
1st January 2026
24AQI (US)
2nd January 2026
22AQI (US)
3rd January 2026
21AQI (US)
4th January 2026
23AQI (US)
5th January 2026
23AQI (US)
6th January 2026
22AQI (US)
7th January 2026
23AQI (US)
8th January 2026
21AQI (US)
9th January 2026
18AQI (US)
10th January 2026
20AQI (US)
11th January 2026
24AQI (US)
12th January 2026
25AQI (US)
13th January 2026
16AQI (US)
14th January 2026
16AQI (US)
15th January 2026
17AQI (US)
16th January 2026
14AQI (US)
17th January 2026
17AQI (US)
18th January 2026
17AQI (US)
19th January 2026
18AQI (US)
20th January 2026
21AQI (US)
21st January 2026
16AQI (US)
22nd January 2026
18AQI (US)
23rd January 2026
23AQI (US)
24th January 2026
35AQI (US)
25th January 2026
33AQI (US)
26th January 2026
16AQI (US)
27th January 2026
19AQI (US)
28th January 2026
18AQI (US)
29th January 2026
28AQI (US)
30th January 2026
21AQI (US)
31st January 2026
15AQI (US)
1st February 2026
19AQI (US)
2nd February 2026
19AQI (US)
3rd February 2026
15AQI (US)
4th February 2026
23AQI (US)
5th February 2026
17AQI (US)
6th February 2026
16AQI (US)
7th February 2026
15AQI (US)
8th February 2026
17AQI (US)
9th February 2026
18AQI (US)
10th February 2026
23AQI (US)
11th February 2026
14AQI (US)
12th February 2026
23AQI (US)
13th February 2026
39AQI (US)
14th February 2026
41AQI (US)
15th February 2026
27AQI (US)
16th February 2026
23AQI (US)
17th February 2026
29AQI (US)
18th February 2026
32AQI (US)
19th February 2026
34AQI (US)
20th February 2026
34AQI (US)
21st February 2026
28AQI (US)
22nd February 2026
19AQI (US)
23rd February 2026
16AQI (US)
24th February 2026
21AQI (US)
25th February 2026
16AQI (US)
26th February 2026
24AQI (US)
27th February 2026
34AQI (US)
28th February 2026
33AQI (US)
1st March 2026
24AQI (US)
2nd March 2026
24AQI (US)
3rd March 2026
20AQI (US)
4th March 2026
26AQI (US)
5th March 2026
25AQI (US)
6th March 2026
29AQI (US)
7th March 2026
26AQI (US)
8th March 2026
22AQI (US)
9th March 2026
22AQI (US)
10th March 2026
18AQI (US)
11th March 2026
15AQI (US)
12th March 2026
16AQI (US)
13th March 2026
21AQI (US)
14th March 2026
18AQI (US)
15th March 2026
22AQI (US)
16th March 2026
16AQI (US)
17th March 2026
20AQI (US)
18th March 2026
21AQI (US)
19th March 2026
19AQI (US)
20th March 2026
16AQI (US)
21st March 2026
17AQI (US)
22nd March 2026
13AQI (US)
23rd March 2026
19AQI (US)
24th March 2026
16AQI (US)
25th March 2026
18AQI (US)
26th March 2026
19AQI (US)
27th March 2026
26AQI (US)
28th March 2026
30AQI (US)
29th March 2026
23AQI (US)
30th March 2026
21AQI (US)
31st March 2026
22AQI (US)
1st April 2026
24AQI (US)
2nd April 2026
23AQI (US)
3rd April 2026
19AQI (US)
4th April 2026
20AQI (US)
5th April 2026
17AQI (US)
6th April 2026
17AQI (US)
7th April 2026
15AQI (US)
8th April 2026
18AQI (US)
9th April 2026
18AQI (US)
10th April 2026
14AQI (US)
11th April 2026
18AQI (US)
12th April 2026
20AQI (US)
13th April 2026
15AQI (US)
14th April 2026
27AQI (US)
15th April 2026
21AQI (US)
16th April 2026
21AQI (US)
17th April 2026
18th April 2026
25AQI (US)
19th April 2026
17AQI (US)
20th April 2026
18AQI (US)
21st April 2026
15AQI (US)
22nd April 2026
23rd April 2026
14AQI (US)
24th April 2026
14AQI (US)
25th April 2026
13AQI (US)
26th April 2026
28AQI (US)
27th April 2026
15AQI (US)
28th April 2026
14AQI (US)
29th April 2026
14AQI (US)
30th April 2026
16AQI (US)
1st May 2026
19AQI (US)
2nd May 2026
24AQI (US)
3rd May 2026
17AQI (US)
4th May 2026
18AQI (US)
5th May 2026
16AQI (US)
6th May 2026
17AQI (US)
7th May 2026
19AQI (US)
8th May 2026
15AQI (US)
9th May 2026
10th May 2026
13AQI (US)
11th May 2026
15AQI (US)
12th May 2026
15AQI (US)
13th May 2026
20AQI (US)
14th May 2026
15AQI (US)
15th May 2026
14AQI (US)
16th May 2026
17AQI (US)
17th May 2026
17AQI (US)
18th May 2026
27AQI (US)
19th May 2026
20AQI (US)
20th May 2026
16AQI (US)
21st May 2026
15AQI (US)
22nd May 2026
12AQI (US)
23rd May 2026
18AQI (US)
24th May 2026
13AQI (US)
25th May 2026
25AQI (US)
26th May 2026
14AQI (US)
27th May 2026
13AQI (US)
28th May 2026
14AQI (US)
29th May 2026
21AQI (US)
30th May 2026
17AQI (US)
31st May 2026
10AQI (US)
1st June 2026
14AQI (US)
2nd June 2026
17AQI (US)
3rd June 2026
18AQI (US)
4th June 2026
16AQI (US)
5th June 2026
15AQI (US)
6th June 2026
17AQI (US)
7th June 2026
19AQI (US)
8th June 2026
17AQI (US)
9th June 2026
24AQI (US)
10th June 2026
18AQI (US)
11th June 2026
15AQI (US)
12th June 2026
17AQI (US)
13th June 2026
16AQI (US)
14th June 2026
14AQI (US)
15th June 2026
12AQI (US)
16th June 2026
12AQI (US)
17th June 2026
15AQI (US)
18th June 2026
16AQI (US)
19th June 2026
21AQI (US)
20th June 2026
17AQI (US)
21st June 2026
18AQI (US)
22nd June 2026
22AQI (US)
23rd June 2026
15AQI (US)
24th June 2026
32AQI (US)
25th June 2026
14AQI (US)
26th June 2026
11AQI (US)
27th June 2026
22AQI (US)
28th June 2026
26AQI (US)
29th June 2026
18AQI (US)
30th June 2026
18AQI (US)
1st July 2026
14AQI (US)
2nd July 2026
14AQI (US)
3rd July 2026
14AQI (US)
4th July 2026
25AQI (US)
5th July 2026
36AQI (US)
6th July 2026
32AQI (US)
7th July 2026
25AQI (US)
8th July 2026
20AQI (US)
9th July 2026
17AQI (US)
10th July 2026
20AQI (US)
11th July 2026
21AQI (US)
12th July 2026
24AQI (US)
13th July 2026
17AQI (US)
14th July 2026
23AQI (US)
15th July 2026
21AQI (US)
16th July 2026
18AQI (US)
17th July 2026
18AQI (US)
18th July 2026
16AQI (US)
19th July 2026
16AQI (US)
20th July 2026
18AQI (US)
21st July 2026
22AQI (US)
22nd July 2026
20AQI (US)
23rd July 2026
19AQI (US)
24th July 2026
19AQI (US)
25th July 2026
16AQI (US)
26th July 2026
17AQI (US)
27th July 2026
16AQI (US)
28th July 2026
19AQI (US)
29th July 2026
22AQI (US)
30th July 2026
19AQI (US)
31st July 2026
19AQI (US)
1st August 2026
21AQI (US)
2nd August 2026
20AQI (US)
3rd August 2026
24AQI (US)
4th August 2026
28AQI (US)
5th August 2026
27AQI (US)
6th August 2026
28AQI (US)
7th August 2026
32AQI (US)
8th August 2026
9th August 2026
10th August 2026
11th August 2026
12th August 2026
13th August 2026
14th August 2026
15th August 2026
16th August 2026
17th August 2026
18th August 2026
19th August 2026
20th August 2026
21st August 2026
22nd August 2026
23rd August 2026
24th August 2026
25th August 2026
26th August 2026
27th August 2026
28th August 2026
29th August 2026
30th August 2026
31st August 2026
1st September 2026
2nd September 2026
3rd September 2026
4th September 2026
5th September 2026
6th September 2026
7th September 2026
8th September 2026
9th September 2026
10th September 2026
11th September 2026
12th September 2026
13th September 2026
14th September 2026
15th September 2026
16th September 2026
17th September 2026
18th September 2026
19th September 2026
20th September 2026
21st September 2026
22nd September 2026
23rd September 2026
24th September 2026
25th September 2026
26th September 2026
27th September 2026
28th September 2026
29th September 2026
30th September 2026
1st October 2026
2nd October 2026
3rd October 2026
4th October 2026
5th October 2026
6th October 2026
7th October 2026
8th October 2026
9th October 2026
10th October 2026
11th October 2026
12th October 2026
13th October 2026
14th October 2026
15th October 2026
16th October 2026
17th October 2026
18th October 2026
19th October 2026
20th October 2026
21st October 2026
22nd October 2026
23rd October 2026
24th October 2026
25th October 2026
26th October 2026
27th October 2026
28th October 2026
29th October 2026
30th October 2026
31st October 2026
1st November 2026
2nd November 2026
3rd November 2026
4th November 2026
5th November 2026
6th November 2026
7th November 2026
8th November 2026
9th November 2026
10th November 2026
11th November 2026
12th November 2026
13th November 2026
14th November 2026
15th November 2026
16th November 2026
17th November 2026
18th November 2026
19th November 2026
20th November 2026
21st November 2026
22nd November 2026
23rd November 2026
24th November 2026
25th November 2026
26th November 2026
27th November 2026
28th November 2026
29th November 2026
30th November 2026
1st December 2026
2nd December 2026
3rd December 2026
4th December 2026
5th December 2026
6th December 2026
7th December 2026
8th December 2026
9th December 2026
10th December 2026
11th December 2026
12th December 2026
13th December 2026
14th December 2026
15th December 2026
16th December 2026
17th December 2026
18th December 2026
19th December 2026
20th December 2026
21st December 2026
22nd December 2026
23rd December 2026
24th December 2026
25th December 2026
26th December 2026
27th December 2026
28th December 2026
29th December 2026
30th December 2026
31st December 2026

21AQI (US)

24AQI (US)

21AQI (US)

18AQI (US)

17AQI (US)

18AQI (US)

20AQI (US)

26AQI (US)

No. of days

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

202620AQI (US)

31
28
31
28
30
30
31
7
216

Highest AQI (US) recorded in

August

26AQI (US)

Lowest AQI (US) recorded in

May

17AQI (US)

202527AQI (US)

6
30
31
30
29
2
27
4
30
31
30
31
275
6

Highest AQI (US) recorded in

August

35AQI (US)

Lowest AQI (US) recorded in

October

16AQI (US)

Most & Least Polluted Years Over the Last 2 Years

Most Polluted Year Recorded
2025(Avg.)
27AQI (US)
Least Polluted Year Recorded
2026(Avg.)
20AQI (US)

Cortez's annual 2026 AQI (US) (20) shows an average percentage change of -25.9% (improved AQI (US)) compared to previous years: 2025 (27).