What is the air quality in Roy today?

The current Air Quality Index (AQI) in Roy is 21 (Good). PM2.5 concentration is 5.14 µg/m³.

What is the temperature in Roy right now?

The current temperature in Roy is 22.1°C (feels like 22.1°C). Humidity is 11.5% and wind speed is 36.2 km/h.

Is it safe to go outside in Roy?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.0 (Low).

Air Quality in Roy, United States

Clear

22.1°C · 11.5% humidity

22.1°

Feels 22.1°

Good

Air quality is satisfactory. Enjoy outdoor activities.

3 stations

Nearby Monitoring Stations

AQI Forecast

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Air Quality Index Trend

44h · 7 stn

View full history →

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.

11.5%

Humidity

36.2 km/h

Wind SW

1021.4 hPa

Pressure

0.0

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

5.14 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Roy?

Temperature & Precipitation

PM2.5 Trend

44h · 7 stations

PM2.55.14 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX0.0

Low

Station readings (3 stations within 25 km)

5.14

Median

5.6

Average

3.8

Low

7.2

High

PM2.5 µg/m³ · Model: 6.0 · Bias: +0.9

What is the 7-day forecast for Roy?

10-20

22.1° 8.3°

10-21

20.1° 7.9°

10-22

19.7° 3.4°

10-23

13.8° 3.1°

10-24

18.8° 3.2°

2.38 mm

10-25

13.1° 9.0°

10-26

17.1° 10.5°

Both models agree Avg diff: 3.5°C

Where are air quality stations near Roy?

Harrisville, Weber, Utah

16.0 km PM2.5: 3.8 µg/m³

Davis, Utah

22.8 km PM2.5: 7.2 µg/m³

Davis, Utah

22.8 km PM2.5: 3.8 µg/m³

What cities are near Roy?

24 Clearfield 16 South Ogden 16 Ogden 25 Syracuse 27 Layton 27 Kaysville 16 North Ogden 24 Centerville 23 Bountiful 25 North Salt Lake

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ModerateAQI > 50 Unhealthy for Sensitive GroupsAQI > 100 UnhealthyAQI > 150 Very UnhealthyAQI > 200

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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 2026-10-20T20:55 UTC.