Frenchtown, Montana, 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
Frenchtown, Montana, United States
AQI Trends: Highest and Lowest
Same Day Analysis (25th October ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 54 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 25th Oct - 26th Oct 2025
Frenchtown, Montana, United States
7 AM25th Oct 2025
6 PM
6 AM26th Oct 2025
58AQI
45AQI
56AQI
22AQI
In the last 24 hours,
Frenchtown's AQI reached its highest point of 58 at 11 AM during the Day, while the lowest point, 22, was recorded at 8 PM during the Night between 25th Oct and 26th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Frenchtown, Montana, United States
17°C11/24°C
15°C6/25°C
17°C6/29°C
18°C9/31°C
15°C12/23°C
15°C10/23°C
14°C9/23°C
12°C10/16°C
10°C6/17°C
8°C6/14°C
7°C0/17°C
9°C1/20°C
14°C5/24°C
14°C3/27°C
15°C4/28°C
12°C7/15°C
7°C5/11°C
5°C1/11°C
4°C0/12°C
4°C0/12°C
7°C2/14°C
8°C4/15°C
6°C1/11°C
7°C4/9°C
7°C4/13°C
7°C2/14°C
8°C0/15°C
8°C1/13°C
8°C0/18°C
10°C7/14°C
--°C/°C
42AQI
34AQI
41AQI
31AQI
2025 Days Vs Air Quality
Frenchtown, Montana, United States
87%
187
13%
27
Total number of days with different AQI categories in last 299 days in 2025 (66 days remaining)
Under WHO’s Safe Air Quality Limits: 87%
Health Risk Level:
Low
In 2025, 87% of 299 days were within WHO’s safe air quality limits. The risk of health issues is Low, but the long-term effects, especially on vulnerable individuals, remain uncertain.
Annual Air Quality Insights
Frenchtown, Montana, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
33AQI
25AQI
18AQI
15AQI
16AQI
17AQI
16AQI
18AQI
17AQI
22AQI
20AQI
26AQI
33AQI
13AQI
14AQI
28AQI
28AQI
16AQI
18AQI
25AQI
26AQI
25AQI
18AQI
20AQI
23AQI
16AQI
13AQI
14AQI
18AQI
24AQI
20AQI
29AQI
34AQI
21AQI
18AQI
17AQI
23AQI
31AQI
39AQI
20AQI
18AQI
19AQI
17AQI
21AQI
27AQI
37AQI
23AQI
18AQI
15AQI
16AQI
16AQI
17AQI
17AQI
14AQI
17AQI
15AQI
15AQI
19AQI
16AQI
19AQI
22AQI
24AQI
26AQI
27AQI
31AQI
23AQI
28AQI
27AQI
19AQI
24AQI
24AQI
25AQI
33AQI
32AQI
51AQI
47AQI
38AQI
41AQI
47AQI
28AQI
24AQI
24AQI
30AQI
28AQI
36AQI
29AQI
26AQI
22AQI
21AQI
21AQI
37AQI
35AQI
31AQI
25AQI
20AQI
21AQI
26AQI
34AQI
36AQI
31AQI
27AQI
33AQI
23AQI
27AQI
29AQI
33AQI
28AQI
25AQI
32AQI
28AQI
29AQI
28AQI
40AQI
37AQI
37AQI
33AQI
28AQI
32AQI
23AQI
27AQI
33AQI
31AQI
27AQI
29AQI
25AQI
24AQI
33AQI
29AQI
31AQI
32AQI
37AQI
45AQI
33AQI
38AQI
26AQI
17AQI
22AQI
27AQI
27AQI
27AQI
38AQI
51AQI
31AQI
24AQI
17AQI
26AQI
41AQI
38AQI
40AQI
52AQI
52AQI
54AQI
57AQI
58AQI
51AQI
41AQI
46AQI
46AQI
62AQI
56AQI
59AQI
69AQI
76AQI
81AQI
89AQI
85AQI
47AQI
52AQI
56AQI
32AQI
27AQI
35AQI
50AQI
29AQI
27AQI
40AQI
39AQI
40AQI
39AQI
48AQI
26AQI
36AQI
34AQI
47AQI
63AQI
63AQI
55AQI
38AQI
26AQI
21AQI
21AQI
27AQI
27AQI
25AQI
36AQI
35AQI
38AQI
30AQI
35AQI
30AQI
19AQI
16AQI
18AQI
45AQI
56AQI
51AQI
37AQI
27AQI
37AQI
41AQI
53AQI
54AQI
60AQI
54AQI
21AQI
21AQI
22AQI
30AQI
30AQI
38AQI
49AQI
36AQI
No. of days
202532AQI
Highest AQI recorded in
September49AQI
Lowest AQI recorded in
March21AQI
Most & Least Polluted Years Over the Last 1 Years
Frenchtown's annual 2025 AQI (32) shows an average percentage change of NaN% (improved AQI) compared to previous years: .