Air Quality in Katy, United States

Clear
37.2°C · 33.0% humidity
37.2°
Feels 37.2°
30
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station

Nearby Monitoring Stations

AQI Forecast Calibrated
52 10pm
52
52
30 1am
36
41
44 4am
46
48
49 7am
50
50
51 10am
51
51
52 1pm
52
52
52 4pm
52
52
52 7pm
52
52
CAMS model adj +25
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
AD 728×90

Air Quality Index Trend

45h · 33 stn

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.

33.0%
Humidity
31.8 km/h
Wind WSW
1012.3 hPa
Pressure
4.4
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
30
7.3 µg/m³
PM10
25
27.4 µg/m³
050100150200300500

What is the weather forecast for Katy?

Temperature & Precipitation

PM2.5 Trend

45h · 33 stations
PM2.57.3 µg/m³ ✓ WHO
Good
PM1027.4 µg/m³
Good
UV INDEX4.4
Moderate
AD 300×250
Station readings (1 station within 25 km)
7.3
Median
7.3
Average
7.3
Low
7.3
High
PM2.5 µg/m³ · Model: 10.85 · Bias: +3.5

What is the 7-day forecast for Katy?

08-03
37.2° 23.7°
08-04
34.9° 25.1°
0.25 mm
08-05
36.2° 24.3°
0.13 mm
08-06
36.2° 25.0°
0.13 mm
08-07
36.3° 23.5°
0.19 mm
08-08
34.6° 24.1°
0.25 mm
08-09
35.3° 24.7°
0.19 mm
Both models agree Avg diff: 1.4°C

Where are air quality stations near Katy?

28
Fire Station 90
14.9 km PM2.5: 6.8 µg/m³
51
Houston Westhollow
19.5 km PM2.5: 12.2 µg/m³
30
3838 Wilcrest Dr
25.5 km PM2.5: 7.3 µg/m³
30
11212 Westpark Dr
25.6 km PM2.5: 7.1 µg/m³
32
Fire Station 73
27.5 km PM2.5: 7.6 µg/m³

What cities are near Katy?

30 Cinco Ranch 30 Mission Bend 26 Pecan Grove 32 Alief 54 Cypress 22 New Territory 19 Rosenberg 24 Sugar Land 24 Stafford 26 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 2026-08-08T06:28 UTC.