Steelton, Pennsylvania, 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
Steelton, Pennsylvania, United States
AQI Trends: Highest and Lowest
Same Day Analysis (22nd October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 31 of Good air quality, showing improvement over 2024 and 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 22nd Oct - 23rd Oct 2025
Steelton, Pennsylvania, United States
7 AM22nd Oct 2025
6 PM
6 AM23rd Oct 2025
39AQI
17AQI
40AQI
22AQI
In the last 24 hours,
Steelton's AQI reached its highest point of 40 at 11 PM during the Night, while the lowest point, 17, was recorded at 12 PM during the Day between 22nd Oct and 23rd Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Steelton, Pennsylvania, United States
22°C17/30°C
22°C17/30°C
22°C20/26°C
21°C17/29°C
20°C15/28°C
22°C15/32°C
21°C15/29°C
21°C15/29°C
18°C12/26°C
16°C8/24°C
17°C9/27°C
19°C9/31°C
20°C10/32°C
20°C11/31°C
22°C15/28°C
17°C10/20°C
12°C7/18°C
10°C3/20°C
13°C6/19°C
17°C14/23°C
14°C13/14°C
15°C11/20°C
14°C9/23°C
11°C6/19°C
11°C4/21°C
15°C8/26°C
17°C10/28°C
13°C8/17°C
13°C5/23°C
11°C7/15°C
--°C/°C
37AQI
31AQI
37AQI
30AQI
2025 Days Vs Air Quality
Steelton, Pennsylvania, United States
82%
243
18%
52
Total number of days with different AQI categories in last 296 days in 2025 (69 days remaining)
Under WHO’s Safe Air Quality Limits: 82%
Health Risk Level:
Low
In 2025, 82% of 296 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
Steelton, Pennsylvania, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
30AQI
21AQI
32AQI
23AQI
30AQI
36AQI
23AQI
28AQI
29AQI
31AQI
48AQI
53AQI
45AQI
26AQI
25AQI
44AQI
45AQI
51AQI
42AQI
26AQI
40AQI
57AQI
84AQI
70AQI
65AQI
60AQI
42AQI
35AQI
38AQI
32AQI
63AQI
30AQI
26AQI
67AQI
45AQI
30AQI
36AQI
30AQI
34AQI
31AQI
29AQI
48AQI
64AQI
29AQI
29AQI
38AQI
27AQI
31AQI
27AQI
25AQI
24AQI
27AQI
48AQI
45AQI
54AQI
49AQI
51AQI
53AQI
28AQI
29AQI
29AQI
33AQI
48AQI
28AQI
25AQI
32AQI
32AQI
30AQI
35AQI
40AQI
30AQI
39AQI
57AQI
54AQI
35AQI
19AQI
18AQI
33AQI
30AQI
16AQI
21AQI
19AQI
25AQI
21AQI
21AQI
20AQI
43AQI
65AQI
62AQI
45AQI
19AQI
25AQI
33AQI
25AQI
34AQI
28AQI
24AQI
21AQI
20AQI
29AQI
36AQI
18AQI
18AQI
34AQI
29AQI
13AQI
18AQI
36AQI
59AQI
24AQI
27AQI
28AQI
24AQI
51AQI
41AQI
29AQI
12AQI
18AQI
29AQI
26AQI
33AQI
41AQI
29AQI
27AQI
26AQI
23AQI
18AQI
27AQI
18AQI
21AQI
32AQI
36AQI
24AQI
21AQI
37AQI
45AQI
36AQI
17AQI
19AQI
16AQI
21AQI
13AQI
18AQI
12AQI
15AQI
21AQI
30AQI
18AQI
29AQI
29AQI
33AQI
17AQI
22AQI
34AQI
52AQI
66AQI
60AQI
55AQI
52AQI
34AQI
44AQI
58AQI
66AQI
74AQI
74AQI
31AQI
26AQI
29AQI
28AQI
25AQI
28AQI
43AQI
46AQI
54AQI
56AQI
56AQI
40AQI
44AQI
33AQI
36AQI
47AQI
29AQI
30AQI
44AQI
55AQI
69AQI
59AQI
35AQI
42AQI
38AQI
39AQI
48AQI
41AQI
30AQI
30AQI
27AQI
39AQI
27AQI
23AQI
28AQI
42AQI
38AQI
51AQI
56AQI
45AQI
52AQI
35AQI
60AQI
43AQI
53AQI
54AQI
56AQI
34AQI
33AQI
48AQI
62AQI
83AQI
80AQI
72AQI
67AQI
41AQI
42AQI
45AQI
44AQI
35AQI
36AQI
51AQI
52AQI
49AQI
29AQI
29AQI
19AQI
16AQI
23AQI
30AQI
30AQI
26AQI
18AQI
20AQI
29AQI
27AQI
21AQI
29AQI
26AQI
31AQI
37AQI
30AQI
39AQI
54AQI
34AQI
23AQI
25AQI
25AQI
28AQI
36AQI
48AQI
48AQI
52AQI
50AQI
28AQI
28AQI
42AQI
24AQI
28AQI
25AQI
37AQI
45AQI
40AQI
32AQI
35AQI
40AQI
42AQI
29AQI
30AQI
36AQI
36AQI
46AQI
60AQI
50AQI
38AQI
24AQI
22AQI
30AQI
39AQI
29AQI
27AQI
24AQI
44AQI
21AQI
25AQI
44AQI
51AQI
24AQI
22AQI
31AQI
41AQI
38AQI
33AQI
28AQI
25AQI
44AQI
43AQI
39AQI
35AQI
34AQI
No. of days
202536AQI
Highest AQI recorded in
June44AQI
Lowest AQI recorded in
May25AQI
202437AQI
Highest AQI recorded in
February42AQI
Lowest AQI recorded in
November30AQI
202345AQI
Highest AQI recorded in
June78AQI
Lowest AQI recorded in
October29AQI
202241AQI
Highest AQI recorded in
December49AQI
Lowest AQI recorded in
August32AQI
202143AQI
Highest AQI recorded in
July56AQI
Lowest AQI recorded in
September36AQI
202039AQI
Highest AQI recorded in
December48AQI
Lowest AQI recorded in
May34AQI
Most & Least Polluted Years Over the Last 6 Years
Steelton's annual 2025 AQI (36) shows an average percentage change of -11.6% (improved AQI) compared to previous years: 2020 (39), 2021 (43), 2022 (41), 2023 (45), 2024 (37).