Estes Park, Colorado, United States Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
October Air Quality Analysis
Estes Park, Colorado, United States
AQI Trends: Highest and Lowest
Same Day Analysis (24th October ):
On this day, AQI across the 2 years varied significantly: 2025 ranks 1st highest AQI at 33 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 24th Oct - 25th Oct 2025
Estes Park, Colorado, United States
7 AM24th Oct 2025
6 PM
6 AM25th Oct 2025
42AQI
22AQI
52AQI
30AQI
In the last 24 hours,
Estes Park's AQI reached its highest point of 52 at 11 PM during the Night, while the lowest point, 22, was recorded at 4 PM during the Day between 24th Oct and 25th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Estes Park, Colorado, United States
13°C7/19°C
14°C9/20°C
13°C9/17°C
13°C10/18°C
11°C8/15°C
12°C7/18°C
13°C8/17°C
14°C10/20°C
16°C10/21°C
11°C5/15°C
5°C2/10°C
3°C2/4°C
6°C2/10°C
11°C5/18°C
14°C9/19°C
11°C10/14°C
11°C9/14°C
7°C3/8°C
3°C1/7°C
9°C4/15°C
11°C9/16°C
7°C3/11°C
4°C1/9°C
4°C3/8°C
9°C2/15°C
3°C-1/5°C
6°C-1/13°C
8°C3/14°C
6°C4/10°C
7°C4/11°C
--°C/°C
31AQI
23AQI
35AQI
24AQI
2025 Days Vs Air Quality
Estes Park, Colorado, United States
97%
289
3%
8
Total number of days with different AQI categories in last 298 days in 2025 (67 days remaining)
Under WHO’s Safe Air Quality Limits: 97%
Health Risk Level:
Very Low
In 2025, 97% of 298 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
Estes Park, Colorado, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
28AQI
29AQI
25AQI
23AQI
21AQI
20AQI
25AQI
25AQI
21AQI
26AQI
26AQI
22AQI
30AQI
28AQI
24AQI
23AQI
23AQI
21AQI
21AQI
23AQI
23AQI
22AQI
22AQI
22AQI
20AQI
22AQI
25AQI
26AQI
27AQI
27AQI
26AQI
24AQI
21AQI
28AQI
30AQI
27AQI
25AQI
24AQI
23AQI
23AQI
22AQI
25AQI
24AQI
21AQI
20AQI
18AQI
17AQI
16AQI
19AQI
19AQI
21AQI
19AQI
19AQI
16AQI
15AQI
18AQI
17AQI
18AQI
19AQI
20AQI
21AQI
19AQI
21AQI
16AQI
14AQI
17AQI
16AQI
15AQI
20AQI
19AQI
15AQI
19AQI
27AQI
19AQI
17AQI
26AQI
17AQI
17AQI
17AQI
16AQI
16AQI
14AQI
16AQI
22AQI
25AQI
27AQI
37AQI
29AQI
25AQI
27AQI
19AQI
18AQI
17AQI
17AQI
14AQI
14AQI
20AQI
20AQI
30AQI
31AQI
33AQI
22AQI
23AQI
20AQI
20AQI
21AQI
21AQI
16AQI
16AQI
15AQI
16AQI
18AQI
18AQI
16AQI
15AQI
16AQI
18AQI
16AQI
15AQI
15AQI
15AQI
17AQI
17AQI
19AQI
16AQI
19AQI
16AQI
18AQI
18AQI
19AQI
19AQI
22AQI
25AQI
20AQI
15AQI
15AQI
14AQI
15AQI
15AQI
15AQI
14AQI
17AQI
17AQI
18AQI
16AQI
18AQI
19AQI
19AQI
17AQI
22AQI
19AQI
20AQI
18AQI
16AQI
18AQI
18AQI
18AQI
20AQI
24AQI
27AQI
27AQI
23AQI
21AQI
23AQI
28AQI
24AQI
22AQI
20AQI
21AQI
23AQI
27AQI
36AQI
35AQI
21AQI
22AQI
22AQI
21AQI
28AQI
29AQI
24AQI
22AQI
24AQI
23AQI
23AQI
22AQI
26AQI
22AQI
20AQI
20AQI
22AQI
26AQI
45AQI
34AQI
26AQI
23AQI
30AQI
40AQI
38AQI
41AQI
30AQI
25AQI
25AQI
23AQI
22AQI
32AQI
31AQI
31AQI
37AQI
33AQI
31AQI
36AQI
38AQI
33AQI
24AQI
24AQI
41AQI
52AQI
46AQI
36AQI
30AQI
31AQI
39AQI
56AQI
47AQI
55AQI
53AQI
44AQI
30AQI
23AQI
22AQI
19AQI
29AQI
36AQI
31AQI
31AQI
35AQI
40AQI
37AQI
23AQI
21AQI
28AQI
28AQI
30AQI
34AQI
30AQI
36AQI
54AQI
54AQI
59AQI
44AQI
39AQI
27AQI
21AQI
15AQI
14AQI
14AQI
16AQI
18AQI
18AQI
15AQI
17AQI
18AQI
19AQI
18AQI
16AQI
17AQI
16AQI
23AQI
18AQI
22AQI
23AQI
12AQI
13AQI
20AQI
25AQI
31AQI
26AQI
15AQI
16AQI
46AQI
54AQI
40AQI
27AQI
47AQI
34AQI
14AQI
24AQI
37AQI
28AQI
17AQI
29AQI
27AQI
25AQI
27AQI
36AQI
41AQI
33AQI
24AQI
21AQI
20AQI
19AQI
18AQI
23AQI
29AQI
35AQI
25AQI
30AQI
No. of days
202524AQI
Highest AQI recorded in
August35AQI
Lowest AQI recorded in
May18AQI
202427AQI
Highest AQI recorded in
September41AQI
Lowest AQI recorded in
April11AQI
20239AQI
Highest AQI recorded in
November11AQI
Lowest AQI recorded in
December8AQI
202057AQI
Highest AQI recorded in
October140AQI
Lowest AQI recorded in
September51AQI
Most & Least Polluted Years Over the Last 4 Years
Estes Park's annual 2025 AQI (24) shows an average percentage change of 36.8% (worsened AQI) compared to previous years: 2020 (57), 2023 (9), 2024 (27).