Air Quality in Catonsville, United States
Clear
33.4°C · 44.0% humidity
33.4°
Feels 36.9°
30
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station
Nearby Monitoring Stations
Catonsville's air quality — share it
AQI Forecast
27
9am
27
27
30
12pm
27
25
25
3pm
25
25
25
6pm
27
34
27
9pm
27
27
27
12am
25
25
25
3am
25
25
25
6am
25
25
Air Quality Index Trend
45h · 24 stnCatonsville's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.
44.0%
Humidity
28.4 km/h
Wind WNW
1016.2 hPa
Pressure
10.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
7.2 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Catonsville?
Temperature & Precipitation
PM2.5 Trend
45h · 24 stationsPM2.57.2 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX10.9
Extreme
Station readings (1 station within 25 km)
7.2
Median
7.2
Average
7.2
Low
7.2
High
PM2.5 µg/m³ · Model: 6.5 · Bias: -0.7
What is the 7-day forecast for Catonsville?
09-05
33.4° 18.7°
8.0 mm
09-06
25.6° 19.9°
4.0 mm
09-07
24.9° 19.3°
0.06 mm
09-08
27.5° 20.1°
0.19 mm
09-09
27.4° 16.2°
0.06 mm
09-10
28.5° 18.3°
4.06 mm
09-11
35.8° 16.7°
Both models agree
Avg diff: 4.1°C
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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 2026-09-05T16:33 UTC.