Aspen Hill, Maryland, 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
Aspen Hill, Maryland, United States
AQI Trends: Highest and Lowest
Same Day Analysis (10th February):
On this day, AQI across the 5 years varied significantly: 2026 ranks 2nd highest AQI at 45 of Good air quality, showing improvement over 2024 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 9th Feb - 10th Feb 2026
Aspen Hill, Maryland, United States
7 AM9th Feb 2026
5 PM
6 AM10th Feb 2026
83AQI
37AQI
58AQI
28AQI
In the last 24 hours,
Aspen Hill's AQI reached its highest point of 83 at 3 PM during the Day, while the lowest point, 28, was recorded at 5 AM during the Night between 9th Feb and 10th Feb 2026.
Day & Night AQI Trend : Jan - Feb 2026
Aspen Hill, Maryland, United States
3°C-2/11°C
5°C-3/14°C
10°C6/16°C
-1°C-5/-1°C
-3°C-6/1°C
1°C-1/4°C
-3°C-5/-2°C
-1°C-8/7°C
-5°C-10/1°C
-3°C-11/7°C
6°C0/14°C
2°C-8/9°C
-9°C-13/-5°C
-7°C-10/-4°C
-8°C-12/-4°C
-9°C-16/0°C
-10°C-16/-6°C
-11°C-17/-6°C
-12°C-18/-7°C
-12°C-18/-6°C
-9°C-14/-3°C
-6°C-12/0°C
-3°C-8/3°C
-2°C-8/2°C
-7°C-12/0°C
-5°C-11/1°C
-8°C-11/-8°C
-9°C-13/-6°C
-6°C-12/0°C
1°C-6/9°C
50AQI
36AQI
44AQI
35AQI
2026 Days Vs Air Quality
Aspen Hill, Maryland, United States
88%
36
12%
5
Total number of days with different AQI categories in last 42 days in 2026 (323 days remaining)
Under WHO’s Safe Air Quality Limits: 88%
Health Risk Level:
Low
In 2026, 88% of 42 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
Aspen Hill, Maryland, United States
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
21AQI (US)
32AQI (US)
37AQI (US)
43AQI (US)
46AQI (US)
55AQI (US)
51AQI (US)
21AQI (US)
31AQI (US)
28AQI (US)
11AQI (US)
14AQI (US)
29AQI (US)
24AQI (US)
24AQI (US)
17AQI (US)
32AQI (US)
47AQI (US)
23AQI (US)
15AQI (US)
31AQI (US)
48AQI (US)
55AQI (US)
48AQI (US)
48AQI (US)
48AQI (US)
38AQI (US)
46AQI (US)
51AQI (US)
56AQI (US)
44AQI (US)
46AQI (US)
50AQI (US)
48AQI (US)
49AQI (US)
47AQI (US)
44AQI (US)
39AQI (US)
44AQI (US)
47AQI (US)
45AQI (US)
36AQI (US)
46AQI (US)
No. of days
202638AQI (US)
Highest AQI (US) recorded in
February46AQI (US)
Lowest AQI (US) recorded in
January36AQI (US)
202531AQI (US)
Highest AQI (US) recorded in
December38AQI (US)
Lowest AQI (US) recorded in
May21AQI (US)
202430AQI (US)
Highest AQI (US) recorded in
July38AQI (US)
Lowest AQI (US) recorded in
November23AQI (US)
202332AQI (US)
Highest AQI (US) recorded in
June55AQI (US)
Lowest AQI (US) recorded in
January23AQI (US)
202233AQI (US)
Highest AQI (US) recorded in
January47AQI (US)
Lowest AQI (US) recorded in
November23AQI (US)
202134AQI (US)
Highest AQI (US) recorded in
July41AQI (US)
Lowest AQI (US) recorded in
October26AQI (US)
202030AQI (US)
Highest AQI (US) recorded in
July34AQI (US)
Lowest AQI (US) recorded in
September22AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Aspen Hill's annual 2026 AQI (US) (38) shows an average percentage change of 20.9% (worsened AQI (US)) compared to previous years: 2020 (30), 2021 (34), 2022 (33), 2023 (32), 2024 (30), 2025 (31).