Greeley Hospital, Greeley, 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
Greeley Hospital, Greeley, Colorado, United States
AQI Trends: Highest and Lowest
Same Day Analysis (28th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 4th highest AQI at 23 of Good air quality, showing improvement over 2024, 2023 and 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 28th Oct - 29th Oct 2025
Greeley Hospital, Greeley, Colorado, United States
7 AM28th Oct 2025
6 PM
6 AM29th Oct 2025
50AQI
11AQI
21AQI
14AQI
In the last 24 hours,
Greeley Hospital's AQI reached its highest point of 50 at 11 AM during the Day, while the lowest point, 11, was recorded at 7 AM during the Day between 28th Oct and 29th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Greeley Hospital, Greeley, Colorado, United States
18°C11/27°C
18°C9/28°C
19°C10/28°C
18°C8/29°C
19°C8/31°C
19°C11/31°C
12°C6/19°C
9°C7/13°C
11°C5/17°C
13°C4/26°C
17°C6/30°C
16°C9/26°C
15°C11/23°C
13°C4/22°C
9°C3/17°C
14°C6/24°C
16°C10/26°C
16°C10/24°C
12°C3/21°C
9°C3/18°C
10°C-3/26°C
13°C8/17°C
9°C0/21°C
10°C-2/23°C
10°C1/22°C
12°C4/21°C
10°C-2/23°C
11°C1/23°C
10°C3/19°C
5°C-1/12°C
--°C/°C
46AQI
35AQI
44AQI
34AQI
2025 Days Vs Air Quality
Greeley Hospital, Greeley, Colorado, United States
90%
270
10%
31
Total number of days with different AQI categories in last 302 days in 2025 (63 days remaining)
Under WHO’s Safe Air Quality Limits: 90%
Health Risk Level:
Very Low
In 2025, 90% of 302 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
Greeley Hospital, Greeley, Colorado, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
38AQI
32AQI
49AQI
30AQI
24AQI
37AQI
37AQI
53AQI
29AQI
30AQI
29AQI
26AQI
26AQI
24AQI
33AQI
47AQI
48AQI
20AQI
29AQI
25AQI
47AQI
22AQI
26AQI
31AQI
19AQI
37AQI
58AQI
49AQI
44AQI
32AQI
27AQI
21AQI
21AQI
24AQI
41AQI
37AQI
25AQI
33AQI
23AQI
22AQI
23AQI
35AQI
27AQI
32AQI
34AQI
31AQI
31AQI
22AQI
20AQI
16AQI
21AQI
20AQI
25AQI
27AQI
15AQI
12AQI
13AQI
13AQI
18AQI
19AQI
23AQI
26AQI
15AQI
13AQI
14AQI
11AQI
16AQI
13AQI
18AQI
17AQI
18AQI
33AQI
32AQI
18AQI
16AQI
19AQI
20AQI
19AQI
26AQI
18AQI
18AQI
17AQI
21AQI
20AQI
23AQI
38AQI
37AQI
20AQI
20AQI
33AQI
18AQI
17AQI
17AQI
18AQI
25AQI
29AQI
27AQI
30AQI
34AQI
38AQI
41AQI
36AQI
21AQI
21AQI
30AQI
33AQI
26AQI
13AQI
16AQI
20AQI
15AQI
24AQI
33AQI
42AQI
17AQI
21AQI
39AQI
15AQI
14AQI
15AQI
15AQI
16AQI
19AQI
21AQI
20AQI
22AQI
22AQI
37AQI
31AQI
33AQI
24AQI
22AQI
33AQI
31AQI
15AQI
14AQI
18AQI
27AQI
12AQI
13AQI
13AQI
18AQI
29AQI
34AQI
16AQI
16AQI
30AQI
27AQI
18AQI
27AQI
21AQI
29AQI
22AQI
17AQI
32AQI
38AQI
22AQI
23AQI
45AQI
52AQI
48AQI
36AQI
31AQI
34AQI
31AQI
28AQI
24AQI
27AQI
26AQI
31AQI
32AQI
44AQI
45AQI
45AQI
46AQI
37AQI
30AQI
35AQI
35AQI
34AQI
28AQI
32AQI
37AQI
33AQI
29AQI
37AQI
31AQI
30AQI
32AQI
32AQI
32AQI
45AQI
55AQI
44AQI
41AQI
35AQI
43AQI
51AQI
52AQI
51AQI
38AQI
34AQI
37AQI
29AQI
30AQI
36AQI
42AQI
42AQI
41AQI
52AQI
45AQI
53AQI
50AQI
40AQI
26AQI
42AQI
55AQI
81AQI
63AQI
57AQI
52AQI
44AQI
40AQI
38AQI
41AQI
46AQI
50AQI
51AQI
33AQI
39AQI
25AQI
40AQI
44AQI
43AQI
45AQI
49AQI
47AQI
45AQI
36AQI
26AQI
41AQI
41AQI
36AQI
43AQI
46AQI
56AQI
76AQI
75AQI
69AQI
52AQI
40AQI
38AQI
38AQI
33AQI
23AQI
17AQI
16AQI
26AQI
25AQI
18AQI
20AQI
32AQI
36AQI
27AQI
20AQI
19AQI
30AQI
34AQI
26AQI
34AQI
31AQI
19AQI
23AQI
31AQI
46AQI
59AQI
47AQI
23AQI
8AQI
56AQI
64AQI
54AQI
51AQI
63AQI
42AQI
21AQI
39AQI
53AQI
36AQI
29AQI
40AQI
34AQI
20AQI
34AQI
51AQI
56AQI
49AQI
51AQI
57AQI
37AQI
23AQI
34AQI
24AQI
21AQI
25AQI
22AQI
34AQI
39AQI
44AQI
35AQI
42AQI
No. of days
202532AQI
Highest AQI recorded in
August44AQI
Lowest AQI recorded in
March21AQI
202428AQI
Highest AQI recorded in
October42AQI
Lowest AQI recorded in
May14AQI
202330AQI
Highest AQI recorded in
January43AQI
Lowest AQI recorded in
December21AQI
202229AQI
Highest AQI recorded in
January47AQI
Lowest AQI recorded in
July20AQI
202138AQI
Highest AQI recorded in
August62AQI
Lowest AQI recorded in
May26AQI
202041AQI
Highest AQI recorded in
September62AQI
Lowest AQI recorded in
May22AQI
Most & Least Polluted Years Over the Last 6 Years
Greeley Hospital's annual 2025 AQI (32) shows an average percentage change of -0.9% (improved AQI) compared to previous years: 2020 (41), 2021 (38), 2022 (29), 2023 (30), 2024 (28).