Brownsville, 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
Brownsville, Texas, United States
AQI Trends: Highest and Lowest
Same Day Analysis (20th October ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 71 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 20th Oct - 21st Oct 2025
Brownsville, Texas, United States
7 AM20th Oct 2025
7 PM
6 AM21st Oct 2025
77AQI
59AQI
72AQI
62AQI
In the last 24 hours,
Brownsville's AQI reached its highest point of 77 at 6 PM during the Day, while the lowest point, 59, was recorded at 8 AM during the Day between 20th Oct and 21st Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Brownsville, Texas, United States
28°C25/33°C
30°C26/37°C
31°C27/36°C
31°C27/36°C
29°C26/34°C
29°C24/36°C
29°C24/37°C
27°C21/36°C
27°C22/33°C
27°C22/33°C
27°C21/35°C
28°C21/36°C
27°C22/35°C
27°C24/34°C
28°C22/35°C
29°C23/37°C
27°C24/30°C
27°C25/32°C
29°C26/32°C
28°C25/35°C
27°C22/35°C
26°C20/35°C
27°C23/36°C
27°C24/33°C
27°C23/33°C
26°C20/33°C
27°C21/36°C
28°C22/36°C
29°C24/38°C
29°C24/37°C
--°C/°C
62AQI
60AQI
63AQI
59AQI
2025 Days Vs Air Quality
Brownsville, Texas, United States
48%
100
52%
109
Total number of days with different AQI categories in last 294 days in 2025 (71 days remaining)
Under WHO’s Safe Air Quality Limits: 48%
Health Risk Level:
Significant
In 2025, 48% of 294 days were within WHO’s safe air quality limits, and 52% exceeded them. The risk of health issues is Significant, especially for those with existing respiratory or heart conditions.
Annual Air Quality Insights
Brownsville, Texas, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
52AQI
50AQI
49AQI
64AQI
76AQI
75AQI
68AQI
68AQI
71AQI
67AQI
60AQI
30AQI
35AQI
47AQI
41AQI
46AQI
44AQI
45AQI
43AQI
46AQI
49AQI
51AQI
48AQI
64AQI
67AQI
63AQI
59AQI
58AQI
59AQI
61AQI
63AQI
61AQI
59AQI
61AQI
56AQI
59AQI
59AQI
56AQI
54AQI
44AQI
51AQI
64AQI
65AQI
59AQI
42AQI
44AQI
51AQI
51AQI
49AQI
56AQI
60AQI
68AQI
72AQI
62AQI
69AQI
74AQI
63AQI
58AQI
57AQI
57AQI
65AQI
66AQI
63AQI
52AQI
51AQI
53AQI
50AQI
55AQI
66AQI
56AQI
52AQI
51AQI
53AQI
58AQI
56AQI
63AQI
58AQI
52AQI
55AQI
62AQI
65AQI
60AQI
54AQI
50AQI
54AQI
59AQI
49AQI
40AQI
46AQI
56AQI
48AQI
39AQI
41AQI
29AQI
30AQI
39AQI
47AQI
44AQI
38AQI
47AQI
61AQI
65AQI
62AQI
56AQI
54AQI
50AQI
54AQI
46AQI
43AQI
45AQI
45AQI
55AQI
61AQI
55AQI
50AQI
54AQI
49AQI
49AQI
42AQI
34AQI
31AQI
35AQI
41AQI
45AQI
57AQI
57AQI
56AQI
42AQI
29AQI
34AQI
36AQI
39AQI
38AQI
34AQI
36AQI
37AQI
41AQI
33AQI
28AQI
26AQI
45AQI
52AQI
32AQI
53AQI
47AQI
28AQI
33AQI
38AQI
42AQI
39AQI
29AQI
29AQI
34AQI
52AQI
52AQI
40AQI
54AQI
47AQI
47AQI
45AQI
44AQI
35AQI
33AQI
41AQI
56AQI
46AQI
30AQI
34AQI
32AQI
25AQI
28AQI
30AQI
46AQI
47AQI
36AQI
29AQI
27AQI
27AQI
23AQI
21AQI
22AQI
26AQI
28AQI
45AQI
41AQI
46AQI
53AQI
50AQI
52AQI
59AQI
60AQI
71AQI
79AQI
74AQI
72AQI
71AQI
67AQI
85AQI
99AQI
92AQI
83AQI
71AQI
64AQI
67AQI
68AQI
68AQI
63AQI
73AQI
71AQI
61AQI
55AQI
58AQI
51AQI
49AQI
39AQI
37AQI
73AQI
No. of days
202551AQI
Highest AQI recorded in
October73AQI
Lowest AQI recorded in
September37AQI
Most & Least Polluted Years Over the Last 1 Years
Brownsville's annual 2025 AQI (51) shows an average percentage change of NaN% (improved AQI) compared to previous years: .