Northwest Hills, Austin, Texas, 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
Northwest Hills, Austin, Texas, United States
AQI Trends: Highest and Lowest
Same Day Analysis (3rd October ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 64 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 3rd Oct - 4th Oct 2025
Northwest Hills, Austin, Texas, United States
7 AM3rd Oct 2025
7 PM
6 AM4th Oct 2025
75AQI
47AQI
70AQI
53AQI
In the last 24 hours,
Northwest Hills's AQI reached its highest point of 75 at 12 PM during the Day, while the lowest point, 47, was recorded at 7 PM during the Day between 3rd Oct and 4th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Northwest Hills, Austin, Texas, United States
32°C21/42°C
32°C26/40°C
27°C23/32°C
25°C23/28°C
28°C23/35°C
27°C19/36°C
29°C20/38°C
29°C21/37°C
30°C23/36°C
29°C23/35°C
30°C23/36°C
30°C24/38°C
30°C24/37°C
30°C24/37°C
30°C24/37°C
31°C25/37°C
30°C23/36°C
30°C25/38°C
31°C25/39°C
31°C26/39°C
29°C27/34°C
28°C22/34°C
27°C18/36°C
27°C18/37°C
27°C19/36°C
27°C19/36°C
29°C21/37°C
28°C20/38°C
29°C20/38°C
29°C22/37°C
--°C/°C
51AQI
45AQI
45AQI
45AQI
2025 Days Vs Air Quality
Northwest Hills, Austin, Texas, United States
63%
121
37%
71
Total number of days with different AQI categories in last 277 days in 2025 (88 days remaining)
Under WHO’s Safe Air Quality Limits: 63%
Health Risk Level:
Moderate
In 2025, 63% of 277 days were within WHO’s safe air quality limits, and 37% exceeded them. The risk of health issues is Moderate, particularly for individuals with respiratory or heart conditions.
Annual Air Quality Insights
Northwest Hills, Austin, Texas, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
49AQI
32AQI
31AQI
43AQI
71AQI
52AQI
55AQI
65AQI
74AQI
61AQI
28AQI
24AQI
25AQI
36AQI
37AQI
44AQI
46AQI
52AQI
44AQI
43AQI
46AQI
52AQI
43AQI
55AQI
62AQI
46AQI
26AQI
45AQI
42AQI
59AQI
54AQI
60AQI
53AQI
55AQI
49AQI
56AQI
56AQI
42AQI
27AQI
28AQI
35AQI
45AQI
36AQI
39AQI
26AQI
32AQI
36AQI
37AQI
46AQI
53AQI
65AQI
68AQI
73AQI
58AQI
65AQI
61AQI
38AQI
62AQI
51AQI
56AQI
60AQI
60AQI
36AQI
34AQI
39AQI
40AQI
41AQI
48AQI
50AQI
60AQI
57AQI
52AQI
57AQI
56AQI
58AQI
49AQI
50AQI
37AQI
33AQI
38AQI
54AQI
55AQI
37AQI
39AQI
57AQI
54AQI
52AQI
38AQI
43AQI
48AQI
34AQI
24AQI
26AQI
28AQI
28AQI
29AQI
44AQI
48AQI
53AQI
45AQI
43AQI
57AQI
60AQI
55AQI
50AQI
37AQI
41AQI
50AQI
42AQI
37AQI
34AQI
49AQI
59AQI
63AQI
49AQI
46AQI
44AQI
49AQI
45AQI
41AQI
34AQI
31AQI
31AQI
33AQI
50AQI
59AQI
53AQI
52AQI
44AQI
42AQI
42AQI
33AQI
42AQI
44AQI
39AQI
39AQI
43AQI
40AQI
40AQI
40AQI
41AQI
59AQI
43AQI
41AQI
52AQI
33AQI
35AQI
50AQI
48AQI
61AQI
49AQI
53AQI
58AQI
54AQI
51AQI
52AQI
50AQI
49AQI
43AQI
34AQI
40AQI
43AQI
40AQI
46AQI
40AQI
48AQI
52AQI
52AQI
57AQI
52AQI
48AQI
56AQI
56AQI
57AQI
51AQI
55AQI
51AQI
51AQI
43AQI
36AQI
27AQI
28AQI
28AQI
33AQI
43AQI
42AQI
38AQI
37AQI
38AQI
55AQI
59AQI
64AQI
46AQI
48AQI
47AQI
45AQI
46AQI
45AQI
44AQI
59AQI
No. of days
202546AQI
Highest AQI recorded in
October59AQI
Lowest AQI recorded in
September44AQI
Most & Least Polluted Years Over the Last 1 Years
Northwest Hills's annual 2025 AQI (46) shows an average percentage change of NaN% (improved AQI) compared to previous years: .