Air Quality in Roy, United States

Windy
28.7°C · 11.8% humidity
28.7°
Feels 28.7°
40
Good
Air quality is satisfactory. Enjoy outdoor activities.
3 stations

Nearby Monitoring Stations

AQI Forecast
25 6am
25
25
40 9am
36
35
40 12pm
58
57
56 3pm
55
55
55 6pm
35
34
34 9pm
34
34
27 12am
25
25
25 3am
25
25
AD 728×90

Air Quality Index Trend

45h · 10 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.

11.8%
Humidity
48.4 km/h
Wind WSW
1016.1 hPa
Pressure
4.4
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
40
9.62 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Roy?

Temperature & Precipitation

PM2.5 Trend

45h · 10 stations
PM2.59.62 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX4.4
Moderate
AD 300×250
Station readings (3 stations within 25 km)
9.62
Median
9.7
Average
9.4
Low
10.1
High
PM2.5 µg/m³ · Model: 6.0 · Bias: -3.6

What is the 7-day forecast for Roy?

09-05
28.7° 14.2°
09-06
30.0° 11.4°
0.25 mm
09-07
31.0° 16.3°
09-08
28.9° 11.0°
09-09
28.5° 14.0°
20.31 mm
09-10
28.9° 6.5°
09-11
32.1° 16.7°
1.0 mm
Both models agree Avg diff: 4.5°C

Where are air quality stations near Roy?

40
Harrisville, Weber, Utah
16.0 km PM2.5: 9.6 µg/m³
39
Harrisville, Weber, Utah
16.0 km PM2.5: 9.4 µg/m³
42
Davis, Utah
22.8 km PM2.5: 10.1 µg/m³
41
Davis, Utah
22.8 km PM2.5: 9.8 µg/m³

What cities are near Roy?

41 Clearfield 40 South Ogden 40 Ogden 41 Syracuse 42 Layton 42 Kaysville 40 North Ogden 29 Centerville 28 Bountiful 31 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 2026-09-05T15:49 UTC.