Houston, Texas, 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
Houston, Texas, United States
AQI Trends: Highest and Lowest
Same Day Analysis (2nd August ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 45 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 2nd Aug - 3rd Aug 2025
Houston, Texas, United States
6 AM2nd Aug 2025
8 PM
5 AM3rd Aug 2025
48AQI
32AQI
49AQI
42AQI
In the last 24 hours,
Houston's AQI reached its highest point of 49 at 4 AM during the Night, while the lowest point, 32, was recorded at 6 PM during the Day between 2nd Aug and 3rd Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Houston, Texas, United States
29°C26/34°C
29°C25/32°C
28°C23/33°C
29°C25/34°C
29°C25/34°C
28°C23/34°C
28°C23/35°C
28°C24/33°C
29°C25/34°C
28°C24/33°C
29°C25/35°C
29°C24/35°C
29°C23/36°C
30°C22/38°C
29°C24/34°C
30°C25/35°C
30°C26/35°C
30°C25/36°C
30°C24/38°C
30°C25/39°C
31°C24/39°C
28°C25/33°C
27°C24/33°C
28°C25/33°C
31°C25/39°C
30°C23/39°C
31°C23/40°C
30°C25/37°C
31°C25/39°C
31°C25/39°C
--°C/°C
49AQI
49AQI
47AQI
47AQI
2025 Days Vs Air Quality
Houston, Texas, United States
50%
64
50%
65
Total number of days with different AQI categories in last 215 days in 2025 (150 days remaining)
Under WHO’s Safe Air Quality Limits: 50%
Health Risk Level:
Considerable
In 2025, 50% of 215 days were within WHO’s safe air quality limits, and 50% exceeded them. The risk of health issues is Considerable, with potential for conditions in sensitive individuals.
Annual Air Quality Insights
Houston, Texas, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
46AQI
43AQI
49AQI
60AQI
59AQI
63AQI
57AQI
59AQI
58AQI
55AQI
31AQI
32AQI
53AQI
45AQI
37AQI
43AQI
54AQI
38AQI
39AQI
46AQI
54AQI
41AQI
49AQI
58AQI
58AQI
46AQI
53AQI
53AQI
59AQI
54AQI
56AQI
47AQI
46AQI
42AQI
52AQI
54AQI
48AQI
34AQI
31AQI
40AQI
48AQI
44AQI
49AQI
33AQI
37AQI
37AQI
38AQI
48AQI
49AQI
57AQI
56AQI
59AQI
53AQI
56AQI
62AQI
48AQI
53AQI
51AQI
51AQI
58AQI
53AQI
40AQI
43AQI
43AQI
50AQI
48AQI
54AQI
52AQI
50AQI
50AQI
57AQI
56AQI
60AQI
52AQI
52AQI
56AQI
48AQI
37AQI
49AQI
55AQI
54AQI
39AQI
49AQI
59AQI
57AQI
57AQI
56AQI
56AQI
43AQI
40AQI
40AQI
39AQI
41AQI
42AQI
41AQI
59AQI
58AQI
67AQI
60AQI
54AQI
70AQI
64AQI
61AQI
54AQI
48AQI
54AQI
54AQI
45AQI
40AQI
42AQI
51AQI
58AQI
58AQI
54AQI
47AQI
47AQI
45AQI
42AQI
41AQI
39AQI
39AQI
40AQI
43AQI
55AQI
59AQI
62AQI
57AQI
52AQI
45AQI
51AQI
49AQI
47AQI
50AQI
52AQI
49AQI
No. of days
202550AQI
Highest AQI recorded in
July52AQI
Lowest AQI recorded in
May47AQI
Most & Least Polluted Years Over the Last 1 Years
Houston's annual 2025 AQI (50) shows an average percentage change of NaN% (improved AQI) compared to previous years: .