What is the air quality in Johnston today?

The current Air Quality Index (AQI) in Johnston is 18 (Good). PM2.5 concentration is 4.2 µg/m³.

What is the temperature in Johnston right now?

The current temperature in Johnston is 6.6°C (feels like 3.2°C). Humidity is 65.1% and wind speed is 18.6 km/h.

Is it safe to go outside in Johnston?

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

Air Quality in Johnston, United States

Partly Cloudy

6.6°C · 65.1% humidity

6.6°

Feels 3.2°

Good

Air quality is satisfactory. Enjoy outdoor activities.

5 stations

Nearby Monitoring Stations

AQI Forecast

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Air Quality Index Trend

46h · 5 stn

View full history →

Johnston's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

65.1%

Humidity

18.6 km/h

Wind SSE

1029.8 hPa

Pressure

0.0

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

4.2 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Johnston?

Temperature & Precipitation

PM2.5 Trend

46h · 5 stations

PM2.54.2 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX0.0

Low

Station readings (5 stations within 25 km)

4.2

Median

4.56

Average

1.4

Low

7.7

High

PM2.5 µg/m³ · Model: 5.8 · Bias: +1.6

What is the 7-day forecast for Johnston?

10-20

15.4° 5.9°

12.37 mm

10-21

20.1° 5.0°

10-22

18.3° 6.0°

0.88 mm

10-23

14.1° 3.7°

10-24

10.7° 7.9°

10-25

20.3° 8.1°

27.31 mm

10-26

11.5° 5.2°

1.19 mm

Both models agree Avg diff: 4.3°C

Where are air quality stations near Johnston?

Near Road, Rhode Island, USA

7.4 km PM2.5: 3.1 µg/m³

CCRI Providence, Rhode Island, USA

7.9 km PM2.5: 2.9 µg/m³

CCRI Providence, Rhode Island, USA

7.9 km PM2.5: 1.4 µg/m³

CCRI Providence, Rhode Island, USA

7.9 km PM2.5: 4.6 µg/m³

CCRI Providence, Rhode Island, USA

7.9 km PM2.5: 7.2 µg/m³

E Providence, Rhode Island, USA

12.2 km PM2.5: 6.7 µg/m³

W Greenwich, Rhode Island, USA

29.0 km PM2.5: 7.0 µg/m³

W Greenwich, Rhode Island, USA

29.0 km PM2.5: 6.2 µg/m³

What cities are near Johnston?

19 North Providence 15 Cranston 22 Providence 20 East Providence 19 Smithfield 23 Pawtucket 22 Central Falls 21 West Warwick 19 Warwick 20 Cumberland

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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 2026-10-20T22:41 UTC.