Air Quality in Roy, United States

Clear
21.8°C · 30.5% humidity
21.8°
Feels 21.8°
51
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
3 stations

Nearby Monitoring Stations

AQI Forecast
25 1pm
25
25
51 4pm
44
38
64 7pm
61
39
38 10pm
28
27
25 1am
25
25
24 4am
24
24
34 7am
34
27
27 10am
25
25
AD 728×90

Air Quality Index Trend

46h · 4 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.

30.5%
Humidity
32.9 km/h
Wind WSW
1006.6 hPa
Pressure
9.4
UV Very High
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
51
12.11 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Roy?

Temperature & Precipitation

PM2.5 Trend

46h · 4 stations
PM2.512.11 µg/m³ ✓ WHO
Moderate
PM1013.7 µg/m³
Good
UV INDEX9.4
Very High
AD 300×250
Station readings (3 stations within 25 km)
12.11
Median
10.87
Average
5.0
Low
14.5
High
PM2.5 µg/m³ · Model: 6.0 · Bias: -6.1

What is the 7-day forecast for Roy?

05-29
33.0° 8.5°
05-30
26.1° 11.2°
05-31
27.7° 14.7°
06-01
28.6° 10.7°
0.38 mm
06-02
26.3° 13.1°
06-03
25.7° 8.1°
06-04
27.9° 15.0°
Both models agree Avg diff: 2.6°C

Where are air quality stations near Roy?

42
Harrisville, Weber, Utah
16.0 km PM2.5: 10.1 µg/m³
25
Davis, Utah
22.8 km PM2.5: 6.0 µg/m³

What cities are near Roy?

51 Clearfield 53 South Ogden 52 Ogden 52 Syracuse 55 Layton 55 Kaysville 23 North Ogden 56 Centerville 56 Bountiful 56 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 2026-05-29T22:17 UTC.