Air Quality in Roy, United States

Windy
36.3°C · 13.9% humidity
36.3°
Feels 36.3°
78
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
3 stations

Nearby Monitoring Stations

AQI Forecast
27 5pm
27
27
78 8pm
66
57
50 11pm
66
62
60 2am
58
57
36 5am
36
28
28 8am
28
27
27 11am
27
27
27 2pm
27
27
AD 728×90

Air Quality Index Trend

43h · 7 stn

Roy'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 Roy is 1.7× the WHO 24-hour guideline of 15 µg/m³.

13.9%
Humidity
53.9 km/h
Wind SW
1007.7 hPa
Pressure
14.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
78
24.88 µg/m³
PM10
25
27.45 µg/m³
050100150200300500

What is the weather forecast for Roy?

Temperature & Precipitation

PM2.5 Trend

43h · 7 stations
PM2.524.88 µg/m³ ×1.7 WHO
Moderate
PM1027.45 µg/m³
Good
UV INDEX14.9
Extreme
AD 300×250
Station readings (3 stations within 25 km)
24.88
Median
25.57
Average
22.6
Low
29.2
High
PM2.5 µg/m³ · Model: 10.85 · Bias: -14.0

What is the 7-day forecast for Roy?

08-03
38.1° 21.4°
08-04
37.7° 21.9°
08-05
35.7° 22.5°
08-06
36.3° 18.1°
08-07
33.6° 21.3°
08-08
36.7° 17.7°
0.13 mm
08-09
34.0° 20.1°
Both models agree Avg diff: 3.1°C

Where are air quality stations near Roy?

60
Weber, Utah
6.6 km PM2.5: 16.4 µg/m³
58
Weber, Utah
6.6 km PM2.5: 15.4 µg/m³
78
Weber, Utah
6.6 km PM2.5: 24.9 µg/m³
71
Weber, Utah
6.6 km PM2.5: 21.6 µg/m³
56
Harrisville, Weber, Utah
16.0 km PM2.5: 14.5 µg/m³
61
Harrisville, Weber, Utah
16.0 km PM2.5: 16.9 µg/m³
62
Davis, Utah
22.8 km PM2.5: 17.3 µg/m³
62
Davis, Utah
22.8 km PM2.5: 17.3 µg/m³

What cities are near Roy?

79 Clearfield 78 South Ogden 78 Ogden 81 Syracuse 84 Layton 85 Kaysville 73 North Ogden 87 Centerville 87 Bountiful 83 North Salt Lake
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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 2026-08-08T02:58 UTC.