Three River Junction, Yellowstone National Park, 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
Three River Junction, Yellowstone National Park, Wyoming, United States
AQI Trends: Highest and Lowest
Same Day Analysis (17th October ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 22 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 17th Oct - 18th Oct 2025
Three River Junction, Yellowstone National Park, Wyoming, United States
7 AM17th Oct 2025
7 PM
6 AM18th Oct 2025
31AQI
5AQI
22AQI
7AQI
In the last 24 hours,
Three River Junction's AQI reached its highest point of 31 at 11 AM during the Day, while the lowest point, undefined, was recorded at 6 AM during the Night between 17th Oct and 18th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Three River Junction, Yellowstone National Park, Wyoming, United States
11°C5/15°C
13°C6/19°C
14°C9/19°C
11°C7/16°C
7°C4/9°C
8°C3/14°C
11°C4/16°C
11°C5/17°C
11°C6/14°C
11°C4/16°C
12°C6/19°C
12°C8/17°C
10°C6/13°C
8°C5/11°C
10°C4/16°C
10°C8/15°C
4°C0/6°C
1°C-2/4°C
1°C-3/5°C
4°C-2/9°C
6°C2/10°C
9°C3/14°C
10°C6/14°C
7°C-1/10°C
-1°C-3/2°C
3°C-5/10°C
4°C-1/10°C
4°C0/9°C
2°C1/5°C
0°C-1/1°C
--°C/°C
20AQI
16AQI
17AQI
15AQI
2025 Days Vs Air Quality
Three River Junction, Yellowstone National Park, Wyoming, United States
98%
202
2%
4
Total number of days with different AQI categories in last 291 days in 2025 (74 days remaining)
Under WHO’s Safe Air Quality Limits: 98%
Health Risk Level:
Very Low
In 2025, 98% of 291 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
Three River Junction, Yellowstone National Park, Wyoming, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
19AQI
19AQI
42AQI
21AQI
21AQI
21AQI
17AQI
17AQI
16AQI
16AQI
15AQI
17AQI
20AQI
20AQI
27AQI
31AQI
33AQI
24AQI
21AQI
20AQI
20AQI
23AQI
20AQI
17AQI
16AQI
15AQI
16AQI
19AQI
19AQI
17AQI
15AQI
18AQI
18AQI
18AQI
18AQI
15AQI
18AQI
20AQI
22AQI
22AQI
17AQI
15AQI
18AQI
19AQI
20AQI
24AQI
21AQI
28AQI
29AQI
18AQI
15AQI
17AQI
14AQI
14AQI
16AQI
16AQI
14AQI
19AQI
18AQI
20AQI
20AQI
19AQI
24AQI
22AQI
21AQI
21AQI
21AQI
23AQI
20AQI
16AQI
15AQI
18AQI
22AQI
23AQI
23AQI
28AQI
30AQI
27AQI
24AQI
25AQI
27AQI
30AQI
24AQI
21AQI
24AQI
24AQI
28AQI
33AQI
32AQI
21AQI
22AQI
27AQI
25AQI
30AQI
28AQI
23AQI
24AQI
26AQI
29AQI
29AQI
21AQI
25AQI
24AQI
22AQI
25AQI
27AQI
27AQI
29AQI
24AQI
22AQI
19AQI
18AQI
22AQI
23AQI
39AQI
28AQI
20AQI
20AQI
19AQI
17AQI
19AQI
21AQI
21AQI
28AQI
23AQI
22AQI
23AQI
26AQI
30AQI
22AQI
19AQI
27AQI
31AQI
25AQI
24AQI
21AQI
24AQI
30AQI
34AQI
26AQI
29AQI
34AQI
28AQI
17AQI
16AQI
16AQI
21AQI
26AQI
31AQI
27AQI
31AQI
46AQI
46AQI
51AQI
32AQI
21AQI
34AQI
37AQI
28AQI
42AQI
35AQI
44AQI
51AQI
62AQI
64AQI
50AQI
41AQI
31AQI
23AQI
15AQI
14AQI
12AQI
16AQI
17AQI
18AQI
14AQI
15AQI
16AQI
18AQI
18AQI
14AQI
13AQI
12AQI
28AQI
28AQI
21AQI
14AQI
22AQI
22AQI
12AQI
9AQI
12AQI
19AQI
18AQI
17AQI
17AQI
8AQI
15AQI
15AQI
20AQI
18AQI
16AQI
16AQI
16AQI
22AQI
22AQI
24AQI
19AQI
19AQI
25AQI
24AQI
29AQI
26AQI
16AQI
No. of days
202523AQI
Highest AQI recorded in
August29AQI
Lowest AQI recorded in
October16AQI
Most & Least Polluted Years Over the Last 1 Years
Three River Junction's annual 2025 AQI (23) shows an average percentage change of NaN% (improved AQI) compared to previous years: .