Gillette, Wyoming, 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
Gillette, Wyoming, United States
AQI Trends: Highest and Lowest
Same Day Analysis (3rd October ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 26 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 2nd Oct - 3rd Oct 2025
Gillette, Wyoming, United States
6 AM2nd Oct 2025
7 PM
5 AM3rd Oct 2025
36AQI
7AQI
40AQI
9AQI
In the last 24 hours,
Gillette's AQI reached its highest point of 40 at 2 AM during the Night, while the lowest point, 7, was recorded at 6 PM during the Day between 2nd Oct and 3rd Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Gillette, Wyoming, United States
--°C/°C
17°C12/24°C
13°C7/20°C
15°C4/26°C
19°C8/32°C
21°C13/30°C
21°C13/31°C
22°C13/33°C
23°C14/33°C
20°C12/29°C
18°C12/24°C
19°C11/26°C
18°C11/27°C
14°C10/21°C
13°C8/19°C
15°C8/24°C
15°C8/23°C
17°C8/25°C
20°C11/30°C
15°C10/22°C
15°C8/24°C
18°C10/28°C
19°C9/30°C
19°C13/28°C
18°C9/28°C
22°C13/32°C
21°C12/29°C
22°C14/30°C
20°C13/27°C
19°C9/29°C
22°C14/32°C
37AQI
29AQI
31AQI
29AQI
2025 Days Vs Air Quality
Gillette, Wyoming, United States
98%
188
2%
3
Total number of days with different AQI categories in last 277 days in 2025 (88 days remaining)
Under WHO’s Safe Air Quality Limits: 98%
Health Risk Level:
Very Low
In 2025, 98% of 277 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
Gillette, Wyoming, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
23AQI
42AQI
28AQI
19AQI
23AQI
21AQI
21AQI
20AQI
20AQI
22AQI
23AQI
29AQI
21AQI
30AQI
36AQI
41AQI
32AQI
29AQI
23AQI
29AQI
29AQI
22AQI
18AQI
19AQI
20AQI
18AQI
20AQI
20AQI
21AQI
19AQI
22AQI
26AQI
16AQI
18AQI
14AQI
19AQI
23AQI
27AQI
27AQI
22AQI
19AQI
25AQI
25AQI
24AQI
25AQI
24AQI
29AQI
27AQI
22AQI
21AQI
23AQI
22AQI
19AQI
16AQI
15AQI
17AQI
19AQI
20AQI
25AQI
18AQI
18AQI
22AQI
20AQI
18AQI
17AQI
22AQI
24AQI
19AQI
17AQI
21AQI
20AQI
20AQI
24AQI
50AQI
49AQI
44AQI
35AQI
42AQI
39AQI
27AQI
25AQI
24AQI
25AQI
27AQI
33AQI
37AQI
41AQI
37AQI
26AQI
30AQI
31AQI
26AQI
29AQI
27AQI
23AQI
23AQI
30AQI
39AQI
32AQI
31AQI
36AQI
25AQI
28AQI
26AQI
30AQI
28AQI
31AQI
30AQI
31AQI
28AQI
32AQI
26AQI
33AQI
42AQI
35AQI
32AQI
31AQI
30AQI
29AQI
27AQI
29AQI
30AQI
29AQI
31AQI
31AQI
28AQI
35AQI
39AQI
29AQI
24AQI
28AQI
31AQI
34AQI
34AQI
22AQI
19AQI
24AQI
22AQI
22AQI
26AQI
32AQI
30AQI
26AQI
22AQI
21AQI
32AQI
33AQI
37AQI
32AQI
27AQI
32AQI
33AQI
33AQI
28AQI
24AQI
31AQI
24AQI
28AQI
35AQI
44AQI
58AQI
67AQI
58AQI
48AQI
38AQI
43AQI
50AQI
44AQI
26AQI
27AQI
21AQI
17AQI
19AQI
17AQI
20AQI
24AQI
28AQI
27AQI
20AQI
17AQI
22AQI
27AQI
36AQI
36AQI
43AQI
33AQI
33AQI
24AQI
19AQI
24AQI
26AQI
27AQI
23AQI
22AQI
30AQI
31AQI
28AQI
33AQI
23AQI
No. of days
202528AQI
Highest AQI recorded in
September33AQI
Lowest AQI recorded in
May22AQI
Most & Least Polluted Years Over the Last 1 Years
Gillette's annual 2025 AQI (28) shows an average percentage change of NaN% (improved AQI) compared to previous years: .