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)
38
Good
Katy, Texas
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
7.05 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
27.45 μg/m³
0
55
155
255
425
605+
23.61 ppb
0
55
71
86
201
201+
2.71 ppb
0
36
76
186
605
1005+
3.69 ppb
0
54
101
361
1250
2050+
0.29 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Katy, Texas
Katy, Texas
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AQI 44
Good
7.77μg/m³
PM2.5
33.58μg/m³
PM10
25.65ppb
O3
4.29ppb
SO2
3.33ppb
NO2
0.25ppm
CO
AQI 38
Good
6.55μg/m³
PM2.5
23.02μg/m³
PM10
11.62ppb
O3
4.36ppb
SO2
3.12ppb
NO2
0.25ppm
CO
AQI 44
Good
7.97μg/m³
PM2.5
35.47μg/m³
PM10
27.39ppb
O3
4.30ppb
SO2
3.33ppb
NO2
0.25ppm
CO
AQI 44
Good
7.97μg/m³
PM2.5
35.47μg/m³
PM10
27.39ppb
O3
4.30ppb
SO2
3.33ppb
NO2
0.25ppm
CO
AQI 44
Good
8.12μg/m³
PM2.5
34.87μg/m³
PM10
25.73ppb
O3
4.28ppb
SO2
3.33ppb
NO2
0.25ppm
CO
AQI 38
Good
6.61μg/m³
PM2.5
21.66μg/m³
PM10
14.32ppb
O3
4.33ppb
SO2
3.34ppb
NO2
0.25ppm
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 08:00:00 on 2026-01-23.
In the last 24 hours, the best air quality in Katy, Texas was observed at 07:00:00 on 2026-01-22.
As of now, the AQI in Katy, Texas is 38, indicating Good conditions.
Katy, Texas air has the highest levels of PM2.5.
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 7.046 μg/m3.
The PM10 concentration in Katy, Texas is 27.445 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Katy, Texas is 0.293 ppm.
Currently, Katy, Texas has a sulfur dioxide (SO2) concentration of 2.709 ppb.
The current ozone (O3) level in Katy, Texas at the moment is 23.615 ppm.
Nitrogen dioxide (NO2) level in Katy, Texas at the moment is 3.688 ppb.
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