Air Quality in Stephenville, United States
Windy
38.6°C · 30.6% humidity
38.6°
Feels 38.6°
68
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
Calibrated model
Nearby Monitoring Stations
Stephenville's air quality — share it
AQI Forecast
54
12pm
54
54
68
3pm
64
61
39
6pm
38
57
56
9pm
55
55
55
12am
54
54
54
3am
54
54
54
6am
54
34
34
9am
34
34
Stephenville's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration. Current PM2.5 concentration in Stephenville is 1.4× the WHO 24-hour guideline of 15 µg/m³.
30.6%
Humidity
76.7 km/h
Wind N
1004.6 hPa
Pressure
24.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
20.25 µg/m³
PM10
27.4 µg/m³
050100150200300500
What is the weather forecast for Stephenville?
Temperature & Precipitation
PM2.520.25 µg/m³
×1.4 WHO
Moderate
PM1027.4 µg/m³
Good
UV INDEX24.9
Extreme
What is the 7-day forecast for Stephenville?
07-21
38.6° 25.4°
0.13 mm
07-22
36.2° 24.1°
2.38 mm
07-23
38.4° 19.2°
0.94 mm
07-24
30.7° 23.9°
0.56 mm
07-25
35.5° 26.1°
07-26
39.2° 22.2°
10.69 mm
07-27
38.7° 26.8°
Both models agree
Avg diff: 3.0°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 2026-07-21T20:10 UTC.