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)
60
Moderate
Katy, Texas
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
13.61 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
57.35 μg/m³
0
55
155
255
425
605+
11.86 ppb
0
55
71
86
201
201+
0.61 ppb
0
36
76
186
605
1005+
3.54 ppb
0
54
101
361
1250
2050+
0.32 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Katy, Texas
Katy, Texas
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AQI 54
Moderate
11.26μg/m³
PM2.5
47.99μg/m³
PM10
13.90ppb
O3
0.55ppb
SO2
3.49ppb
NO2
0.32ppm
CO
AQI 56
Moderate
12.11μg/m³
PM2.5
60.56μg/m³
PM10
10.82ppb
O3
0.55ppb
SO2
3.60ppb
NO2
0.32ppm
CO
AQI 54
Moderate
10.71μg/m³
PM2.5
46.52μg/m³
PM10
13.99ppb
O3
0.55ppb
SO2
3.50ppb
NO2
0.32ppm
CO
AQI 54
Moderate
10.71μg/m³
PM2.5
46.52μg/m³
PM10
13.99ppb
O3
0.55ppb
SO2
3.50ppb
NO2
0.32ppm
CO
AQI 54
Moderate
11.38μg/m³
PM2.5
48.67μg/m³
PM10
13.97ppb
O3
0.55ppb
SO2
3.49ppb
NO2
0.32ppm
CO
AQI 58
Moderate
12.64μg/m³
PM2.5
58.81μg/m³
PM10
10.48ppb
O3
0.55ppb
SO2
3.62ppb
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 06:00:00 on 2026-06-08.
In the last 24 hours, the best air quality in Katy, Texas was observed at 03:00:00 on 2026-06-08.
As of now, the AQI in Katy, Texas is 58, indicating Moderate 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 12.86 μg/m3.
The PM10 concentration in Katy, Texas is 59.682 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Katy, Texas is 0.324 ppm.
Currently, Katy, Texas has a sulfur dioxide (SO2) concentration of 0.571 ppb.
The current ozone (O3) level in Katy, Texas at the moment is 11.793 ppm.
Nitrogen dioxide (NO2) level in Katy, Texas at the moment is 3.948 ppb.
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