Lancaster, Pennsylvania, United States Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
August Air Quality Analysis
Lancaster, Pennsylvania, United States
AQI Trends: Highest and Lowest
Same Day Analysis (7th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 57 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 7th Aug - 8th Aug 2025
Lancaster, Pennsylvania, United States
5 AM7th Aug 2025
8 PM
4 AM8th Aug 2025
59AQI
49AQI
65AQI
50AQI
In the last 24 hours,
Lancaster's AQI reached its highest point of 65 at 3 AM during the Night, while the lowest point, 49, was recorded at 8 AM during the Day between 7th Aug and 8th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Lancaster, Pennsylvania, United States
25°C22/32°C
25°C21/28°C
25°C20/33°C
27°C22/34°C
26°C21/30°C
24°C22/28°C
26°C22/30°C
26°C20/32°C
27°C21/35°C
24°C21/30°C
24°C20/29°C
26°C22/30°C
24°C18/30°C
21°C14/27°C
23°C18/29°C
26°C19/33°C
28°C21/37°C
26°C21/32°C
25°C20/32°C
27°C22/34°C
27°C19/36°C
28°C20/35°C
25°C19/32°C
19°C18/22°C
20°C13/25°C
20°C10/29°C
21°C10/31°C
22°C13/32°C
21°C18/24°C
22°C17/27°C
--°C/°C
40AQI
40AQI
42AQI
42AQI
2025 Days Vs Air Quality
Lancaster, Pennsylvania, United States
83%
182
17%
37
Total number of days with different AQI categories in last 220 days in 2025 (145 days remaining)
Under WHO’s Safe Air Quality Limits: 83%
Health Risk Level:
Low
In 2025, 83% of 220 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
Lancaster, Pennsylvania, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
29AQI
21AQI
32AQI
23AQI
31AQI
39AQI
23AQI
28AQI
29AQI
31AQI
49AQI
53AQI
46AQI
26AQI
26AQI
44AQI
49AQI
43AQI
49AQI
26AQI
36AQI
68AQI
92AQI
89AQI
77AQI
68AQI
52AQI
37AQI
29AQI
31AQI
47AQI
32AQI
25AQI
53AQI
40AQI
32AQI
31AQI
32AQI
33AQI
31AQI
31AQI
45AQI
56AQI
27AQI
30AQI
35AQI
25AQI
30AQI
28AQI
25AQI
26AQI
26AQI
47AQI
48AQI
53AQI
45AQI
61AQI
51AQI
30AQI
29AQI
29AQI
35AQI
44AQI
30AQI
24AQI
32AQI
32AQI
29AQI
39AQI
44AQI
33AQI
35AQI
57AQI
40AQI
30AQI
19AQI
20AQI
40AQI
33AQI
17AQI
20AQI
18AQI
24AQI
20AQI
21AQI
22AQI
41AQI
61AQI
58AQI
28AQI
20AQI
22AQI
27AQI
27AQI
29AQI
25AQI
25AQI
25AQI
23AQI
29AQI
27AQI
16AQI
20AQI
42AQI
28AQI
14AQI
22AQI
45AQI
58AQI
25AQI
29AQI
31AQI
34AQI
56AQI
35AQI
28AQI
12AQI
18AQI
28AQI
30AQI
31AQI
43AQI
38AQI
25AQI
24AQI
22AQI
18AQI
30AQI
17AQI
21AQI
34AQI
37AQI
21AQI
21AQI
30AQI
38AQI
31AQI
17AQI
19AQI
20AQI
19AQI
14AQI
17AQI
12AQI
14AQI
21AQI
36AQI
19AQI
27AQI
34AQI
32AQI
18AQI
23AQI
32AQI
50AQI
57AQI
55AQI
47AQI
39AQI
29AQI
40AQI
57AQI
63AQI
75AQI
77AQI
30AQI
31AQI
29AQI
22AQI
23AQI
25AQI
50AQI
52AQI
53AQI
55AQI
55AQI
40AQI
43AQI
29AQI
37AQI
48AQI
30AQI
31AQI
44AQI
52AQI
82AQI
59AQI
33AQI
38AQI
37AQI
37AQI
42AQI
36AQI
26AQI
25AQI
24AQI
36AQI
25AQI
23AQI
29AQI
30AQI
35AQI
53AQI
50AQI
37AQI
49AQI
33AQI
75AQI
42AQI
50AQI
54AQI
49AQI
29AQI
35AQI
50AQI
62AQI
82AQI
79AQI
57AQI
43AQI
37AQI
32AQI
28AQI
25AQI
43AQI
41AQI
56AQI
No. of days
202536AQI
Highest AQI recorded in
August56AQI
Lowest AQI recorded in
May25AQI
202438AQI
Highest AQI recorded in
February45AQI
Lowest AQI recorded in
November32AQI
202345AQI
Highest AQI recorded in
June76AQI
Lowest AQI recorded in
September33AQI
202240AQI
Highest AQI recorded in
December49AQI
Lowest AQI recorded in
August27AQI
202142AQI
Highest AQI recorded in
July51AQI
Lowest AQI recorded in
June36AQI
202039AQI
Highest AQI recorded in
November49AQI
Lowest AQI recorded in
May29AQI
Most & Least Polluted Years Over the Last 6 Years
Lancaster's annual 2025 AQI (36) shows an average percentage change of -10.6% (improved AQI) compared to previous years: 2020 (39), 2021 (42), 2022 (40), 2023 (45), 2024 (38).