Cass Lake, Minnesota, 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
Cass Lake, Minnesota, United States
AQI Trends: Highest and Lowest
Same Day Analysis (9th February):
On this day, AQI across the 1 years varied significantly: 2026 ranks 1st highest AQI at 42 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 8th Feb - 9th Feb 2026
Cass Lake, Minnesota, United States
7 AM8th Feb 2026
5 PM
6 AM9th Feb 2026
52AQI
32AQI
52AQI
36AQI
In the last 24 hours,
Cass Lake's AQI reached its highest point of 52 at 4 PM during the Day, while the lowest point, 32, was recorded at 12 PM during the Day between 8th Feb and 9th Feb 2026.
Day & Night AQI Trend : Jan - Feb 2026
Cass Lake, Minnesota, United States
-7°C-12/-3°C
-1°C-6/5°C
0°C-11/3°C
-13°C-16/-10°C
-8°C-16/-4°C
-10°C-17/-3°C
-20°C-23/-19°C
-18°C-23/-13°C
-22°C-26/-18°C
-19°C-25/-14°C
-14°C-19/-9°C
-25°C-31/-22°C
-29°C-33/-24°C
-28°C-34/-21°C
-25°C-30/-20°C
-22°C-28/-12°C
-19°C-22/-15°C
-21°C-25/-15°C
-22°C-26/-16°C
-21°C-26/-13°C
-17°C-25/-6°C
-9°C-14/-7°C
-15°C-19/-11°C
-17°C-25/-9°C
-9°C-14/-5°C
-1°C-8/6°C
-6°C-12/-3°C
-11°C-16/-4°C
-5°C-7/0°C
1°C-4/6°C
44AQI
31AQI
40AQI
29AQI
2026 Days Vs Air Quality
Cass Lake, Minnesota, United States
88%
35
13%
5
Total number of days with different AQI categories in last 41 days in 2026 (324 days remaining)
Under WHO’s Safe Air Quality Limits: 88%
Health Risk Level:
Low
In 2026, 88% of 41 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
Cass Lake, Minnesota, United States
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
15AQI (US)
16AQI (US)
24AQI (US)
39AQI (US)
54AQI (US)
40AQI (US)
37AQI (US)
47AQI (US)
34AQI (US)
25AQI (US)
18AQI (US)
18AQI (US)
11AQI (US)
10AQI (US)
19AQI (US)
13AQI (US)
11AQI (US)
14AQI (US)
10AQI (US)
14AQI (US)
28AQI (US)
54AQI (US)
56AQI (US)
48AQI (US)
49AQI (US)
45AQI (US)
35AQI (US)
42AQI (US)
47AQI (US)
49AQI (US)
41AQI (US)
52AQI (US)
52AQI (US)
47AQI (US)
45AQI (US)
50AQI (US)
39AQI (US)
34AQI (US)
40AQI (US)
42AQI (US)
31AQI (US)
45AQI (US)
No. of days
202634AQI (US)
Highest AQI (US) recorded in
February45AQI (US)
Lowest AQI (US) recorded in
January31AQI (US)
202535AQI (US)
Highest AQI (US) recorded in
July62AQI (US)
Lowest AQI (US) recorded in
March17AQI (US)
Most & Least Polluted Years Over the Last 2 Years
Cass Lake's annual 2026 AQI (US) (34) shows an average percentage change of -3.5% (improved AQI (US)) compared to previous years: 2025 (35).