Blackwater NWR, Cambridge, Maryland, 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
Blackwater NWR, Cambridge, Maryland, United States
AQI Trends: Highest and Lowest
Same Day Analysis (25th October ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 26 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 25th Oct - 26th Oct 2025
Blackwater NWR, Cambridge, Maryland, United States
7 AM25th Oct 2025
6 PM
6 AM26th Oct 2025
31AQI
17AQI
42AQI
19AQI
In the last 24 hours,
Blackwater NWR's AQI reached its highest point of 42 at 3 AM during the Night, while the lowest point, 17, was recorded at 5 PM during the Day between 25th Oct and 26th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Blackwater NWR, Cambridge, Maryland, United States
25°C22/30°C
22°C20/26°C
22°C19/28°C
22°C18/28°C
23°C19/28°C
20°C15/25°C
16°C12/21°C
16°C10/24°C
17°C10/26°C
18°C11/27°C
20°C14/29°C
22°C16/29°C
21°C15/22°C
15°C11/20°C
15°C10/19°C
17°C12/22°C
17°C14/19°C
15°C14/15°C
16°C13/19°C
18°C13/25°C
14°C10/20°C
14°C9/20°C
15°C8/24°C
19°C14/25°C
16°C12/21°C
15°C8/23°C
17°C13/22°C
14°C8/21°C
12°C7/17°C
12°C9/17°C
--°C/°C
35AQI
27AQI
37AQI
30AQI
2025 Days Vs Air Quality
Blackwater NWR, Cambridge, Maryland, United States
94%
200
6%
13
Total number of days with different AQI categories in last 299 days in 2025 (66 days remaining)
Under WHO’s Safe Air Quality Limits: 94%
Health Risk Level:
Very Low
In 2025, 94% of 299 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
Blackwater NWR, Cambridge, Maryland, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
18AQI
28AQI
50AQI
30AQI
26AQI
19AQI
22AQI
30AQI
30AQI
34AQI
32AQI
17AQI
24AQI
15AQI
22AQI
20AQI
13AQI
18AQI
29AQI
37AQI
13AQI
18AQI
29AQI
42AQI
43AQI
22AQI
37AQI
32AQI
28AQI
23AQI
33AQI
14AQI
17AQI
24AQI
38AQI
43AQI
45AQI
41AQI
25AQI
23AQI
22AQI
21AQI
25AQI
22AQI
18AQI
26AQI
28AQI
22AQI
30AQI
24AQI
45AQI
28AQI
18AQI
20AQI
18AQI
16AQI
14AQI
16AQI
14AQI
16AQI
18AQI
23AQI
15AQI
18AQI
26AQI
29AQI
18AQI
22AQI
24AQI
33AQI
35AQI
31AQI
25AQI
31AQI
26AQI
34AQI
48AQI
58AQI
57AQI
50AQI
47AQI
37AQI
23AQI
26AQI
27AQI
26AQI
39AQI
43AQI
54AQI
59AQI
60AQI
54AQI
46AQI
32AQI
48AQI
44AQI
42AQI
24AQI
34AQI
51AQI
60AQI
47AQI
33AQI
38AQI
31AQI
25AQI
30AQI
31AQI
27AQI
24AQI
20AQI
28AQI
28AQI
30AQI
28AQI
21AQI
29AQI
50AQI
49AQI
32AQI
37AQI
44AQI
51AQI
27AQI
42AQI
45AQI
40AQI
29AQI
37AQI
34AQI
45AQI
61AQI
68AQI
56AQI
37AQI
28AQI
29AQI
29AQI
24AQI
28AQI
27AQI
36AQI
45AQI
51AQI
35AQI
17AQI
24AQI
20AQI
25AQI
30AQI
26AQI
26AQI
23AQI
21AQI
28AQI
27AQI
22AQI
24AQI
24AQI
19AQI
23AQI
26AQI
37AQI
47AQI
39AQI
26AQI
26AQI
20AQI
24AQI
28AQI
39AQI
40AQI
36AQI
31AQI
19AQI
20AQI
29AQI
40AQI
27AQI
20AQI
26AQI
28AQI
31AQI
37AQI
24AQI
20AQI
39AQI
35AQI
45AQI
41AQI
40AQI
50AQI
48AQI
49AQI
34AQI
26AQI
42AQI
40AQI
43AQI
36AQI
27AQI
21AQI
31AQI
21AQI
25AQI
40AQI
33AQI
22AQI
27AQI
30AQI
26AQI
24AQI
26AQI
30AQI
26AQI
24AQI
39AQI
35AQI
33AQI
29AQI
34AQI
No. of days
202531AQI
Highest AQI recorded in
June39AQI
Lowest AQI recorded in
May24AQI
Most & Least Polluted Years Over the Last 1 Years
Blackwater NWR's annual 2025 AQI (31) shows an average percentage change of NaN% (improved AQI) compared to previous years: .