What is the air quality in Katy today?

The current Air Quality Index (AQI) in Katy is 36 (Good). PM2.5 concentration is 8.55 µg/m³.

What is the temperature in Katy right now?

The current temperature in Katy is 23.9°C (feels like 23.9°C). Humidity is 36.6% and wind speed is 41.6 km/h.

Is it safe to go outside in Katy?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.0 (Low).

Air Quality in Katy, United States

Windy

23.9°C · 36.6% humidity

23.9°

Feels 23.9°

Good

Air quality is satisfactory. Enjoy outdoor activities.

2 stations

Nearby Monitoring Stations

AQI Forecast

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Air Quality Index Trend

46h · 43 stn

View full history →

Katy's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

36.6%

Humidity

41.6 km/h

Wind N

1021.3 hPa

Pressure

0.0

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

8.55 µg/m³

PM10

27.4 µg/m³

050100150200300500

What is the weather forecast for Katy?

Temperature & Precipitation

PM2.5 Trend

46h · 43 stations

PM2.58.55 µg/m³ ✓ WHO

Good

PM1027.4 µg/m³

Good

UV INDEX0.0

Low

Station readings (2 stations within 25 km)

8.55

Median

8.36

Average

7.6

Low

9.11

High

PM2.5 µg/m³ · Model: 8.2 · Bias: -0.3

What is the 7-day forecast for Katy?

10-20

25.0° 9.0°

10-21

25.5° 15.1°

0.31 mm

10-22

27.2° 15.4°

10-23

29.7° 13.9°

2.94 mm

10-24

27.2° 19.0°

0.31 mm

10-25

22.9° 15.2°

10-26

29.0° 10.5°

Both models agree Avg diff: 3.5°C

Where are air quality stations near Katy?

Fire Station 90

14.9 km PM2.5: 8.4 µg/m³

Houston Westhollow

19.5 km PM2.5: 6.9 µg/m³

NE Corner Westpark & Wilcrest Dr

25.5 km PM2.5: 7.7 µg/m³

3838 Wilcrest Dr

25.5 km PM2.5: 8.1 µg/m³

11212 Westpark Dr

25.6 km PM2.5: 7.4 µg/m³

Fire Station 73

27.5 km PM2.5: 8.5 µg/m³

What cities are near Katy?

35 Cinco Ranch 34 Mission Bend 35 Pecan Grove 35 Alief 34 Cypress 35 New Territory 32 Rosenberg 36 Sugar Land 35 Stafford 34 Missouri City

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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-10-20T20:55 UTC.