Thompson Falls, Montana, United States Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
February Air Quality Analysis
Thompson Falls, Montana, United States
AQI Trends: Highest and Lowest
Same Day Analysis (15th February):
On this day, AQI across the 1 years varied significantly: 2026 ranks 1st highest AQI at 20 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 14th Feb - 15th Feb 2026
Thompson Falls, Montana, United States
8 AM14th Feb 2026
5 PM
7 AM15th Feb 2026
60AQI
16AQI
32AQI
12AQI
In the last 24 hours,
Thompson Falls's AQI reached its highest point of 60 at 11 AM during the Day, while the lowest point, 12, was recorded at 10 PM during the Night between 14th Feb and 15th Feb 2026.
Day & Night AQI Trend : Jan - Feb 2026
Thompson Falls, Montana, United States
-6°C-11/3°C
-4°C-13/4°C
-3°C-6/2°C
-4°C-6/2°C
-5°C-8/-1°C
-4°C-7/0°C
-5°C-8/0°C
-6°C-9/-1°C
-5°C-10/1°C
-2°C-6/3°C
1°C-3/6°C
3°C1/4°C
4°C2/9°C
7°C3/13°C
7°C4/13°C
7°C5/14°C
6°C3/10°C
6°C3/12°C
7°C3/14°C
9°C5/14°C
8°C4/14°C
7°C2/14°C
7°C5/11°C
4°C1/5°C
4°C1/9°C
3°C-1/9°C
3°C-1/9°C
5°C2/10°C
3°C0/7°C
4°C2/6°C
42AQI
23AQI
43AQI
23AQI
2026 Days Vs Air Quality
Thompson Falls, Montana, United States
91%
42
9%
4
Total number of days with different AQI categories in last 47 days in 2026 (318 days remaining)
Under WHO’s Safe Air Quality Limits: 91%
Health Risk Level:
Very Low
In 2026, 91% of 47 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
Thompson Falls, Montana, United States
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
61AQI (US)
67AQI (US)
52AQI (US)
49AQI (US)
31AQI (US)
36AQI (US)
40AQI (US)
31AQI (US)
39AQI (US)
33AQI (US)
40AQI (US)
37AQI (US)
35AQI (US)
34AQI (US)
39AQI (US)
27AQI (US)
33AQI (US)
29AQI (US)
33AQI (US)
35AQI (US)
38AQI (US)
35AQI (US)
40AQI (US)
37AQI (US)
29AQI (US)
37AQI (US)
51AQI (US)
43AQI (US)
26AQI (US)
33AQI (US)
25AQI (US)
36AQI (US)
31AQI (US)
30AQI (US)
28AQI (US)
34AQI (US)
26AQI (US)
28AQI (US)
26AQI (US)
32AQI (US)
26AQI (US)
24AQI (US)
29AQI (US)
33AQI (US)
31AQI (US)
20AQI (US)
38AQI (US)
29AQI (US)
No. of days
202635AQI (US)
Highest AQI (US) recorded in
January38AQI (US)
Lowest AQI (US) recorded in
February29AQI (US)
202539AQI (US)
Highest AQI (US) recorded in
October61AQI (US)
Lowest AQI (US) recorded in
May19AQI (US)
Most & Least Polluted Years Over the Last 2 Years
Thompson Falls's annual 2026 AQI (US) (35) shows an average percentage change of -9.4% (improved AQI (US)) compared to previous years: 2025 (39).