What is the air quality in Johnston today?

The current Air Quality Index (AQI) in Johnston is 18 (Good). PM2.5 concentration is 4.38 µg/m³.

What is the temperature in Johnston right now?

The current temperature in Johnston is 20.3°C (feels like 20.3°C). Humidity is 33.1% and wind speed is 50.2 km/h.

Is it safe to go outside in Johnston?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 5.9 (High).

Air Quality in Johnston, United States

Windy

20.3°C · 33.1% humidity

20.3°

Feels 20.3°

Good

Air quality is satisfactory. Enjoy outdoor activities.

3 stations

Nearby Monitoring Stations

AQI Forecast

24 1pm

18 4pm

23 7pm

26 10pm

25 1am

24 4am

24 7am

24 10am

Air Quality Index Trend

46h · 3 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.

33.1%

Humidity

50.2 km/h

Wind SSE

1020.7 hPa

Pressure

5.9

UV High

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

4.38 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Johnston?

Temperature & Precipitation

PM2.5 Trend

46h · 3 stations

PM2.54.38 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX5.9

High

Station readings (3 stations within 25 km)

4.38

Median

5.87

Average

1.2

Low

8.2

High

PM2.5 µg/m³ · Model: 5.8 · Bias: +1.4

What is the 7-day forecast for Johnston?

05-29

20.3° 11.2°

0.19 mm

05-30

20.8° 9.3°

3.94 mm

05-31

25.9° 10.9°

0.38 mm

06-01

23.4° 6.5°

06-02

20.5° 10.2°

0.06 mm

06-03

26.9° 13.0°

06-04

23.2° 17.4°

Both models agree Avg diff: 4.6°C

Where are air quality stations near Johnston?

Near Road, Rhode Island, USA

7.4 km PM2.5: 9.1 µg/m³

Near Road, Rhode Island, USA

7.4 km PM2.5: 7.7 µg/m³

Near Road, Rhode Island, USA

7.4 km PM2.5: 4.8 µg/m³

CCRI Providence, Rhode Island, USA

7.9 km PM2.5: 10.1 µg/m³

CCRI Providence, Rhode Island, USA

7.9 km PM2.5: 5.5 µg/m³

SUEZ Waterpump Station

10.9 km PM2.5: 4.0 µg/m³

E Providence, Rhode Island, USA

12.2 km PM2.5: 5.5 µg/m³

W Greenwich, Rhode Island, USA

29.0 km PM2.5: 8.6 µg/m³

W Greenwich, Rhode Island, USA

29.0 km PM2.5: 4.3 µg/m³

What cities are near Johnston?

20 North Providence 12 Cranston 12 Providence 27 East Providence 24 Smithfield 30 Pawtucket 29 Central Falls 22 West Warwick 23 Warwick 26 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 2026-05-29T20:41 UTC.