Stay updated with real-time air quality in Katy, Texas featuring accurate data on AQI, PM2.5, PM10, O3, NO2, SO2, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.
Live AQI (Air Quality Index)
33
Good
Katy, Texas
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
6.10 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
18.16 μg/m³
0
55
155
255
425
605+
29.01 ppb
0
55
71
86
201
201+
0.87 ppb
0
36
76
186
605
1005+
2.51 ppb
0
54
101
361
1250
2050+
0.22 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Katy, Texas
Katy, Texas
Scroll To Air Quality MapLoading...
AQI 51
Moderate
7.55μg/m³
PM2.5
31.69μg/m³
PM10
54.66ppb
O3
0.92ppb
SO2
7.09ppb
NO2
0.32ppm
CO
AQI 74
Moderate
9.27μg/m³
PM2.5
42.94μg/m³
PM10
62.06ppb
O3
0.93ppb
SO2
7.03ppb
NO2
0.32ppm
CO
AQI 49
Good
6.86μg/m³
PM2.5
30.53μg/m³
PM10
52.89ppb
O3
0.92ppb
SO2
7.09ppb
NO2
0.32ppm
CO
AQI 49
Good
6.86μg/m³
PM2.5
30.53μg/m³
PM10
52.89ppb
O3
0.92ppb
SO2
7.09ppb
NO2
0.32ppm
CO
AQI 51
Moderate
7.56μg/m³
PM2.5
32.10μg/m³
PM10
55.40ppb
O3
0.92ppb
SO2
7.08ppb
NO2
0.32ppm
CO
AQI 51
Moderate
8.73μg/m³
PM2.5
32.86μg/m³
PM10
55.23ppb
O3
0.93ppb
SO2
7.09ppb
NO2
0.32ppm
CO
Air quality and pollutant data for Texas, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.
Source: Ambee Data Sources
The air quality information for Katy, Texas is updated every hour for accuracy.
In the past 24 hours, the air quality in Katy, Texas was at its worst at 01:00:00 on 2025-09-04.
In the last 24 hours, the best air quality in Katy, Texas was observed at 05:00:00 on 2025-09-04.
As of now, the AQI in Katy, Texas is 74, indicating Moderate conditions.
Katy, Texas air has the highest levels of O3.
Poor air quality in Katy, Texas means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Katy, Texas are currently 9.131 μg/m3.
The PM10 concentration in Katy, Texas is 43.06 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Katy, Texas is 0.323 ppm.
Currently, Katy, Texas has a sulfur dioxide (SO2) concentration of 0.924 ppb.
The current ozone (O3) level in Katy, Texas at the moment is 62.056 ppm.
Nitrogen dioxide (NO2) level in Katy, Texas at the moment is 7.077 ppb.
All Rights Reserved © Ambee Inc. 2025