What is the air quality in Johnston today?

The current Air Quality Index (AQI) in Johnston is 15 (Good). PM2.5 concentration is 3.71 µg/m³.

What is the temperature in Johnston right now?

The current temperature in Johnston is 17.8°C (feels like 17.8°C). Humidity is 60.3% and wind speed is 19.3 km/h.

Is it safe to go outside in Johnston?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.7 (Low).

Air Quality in Johnston, United States

Drizzle

17.8°C · 60.3% humidity

17.8°

Feels 17.8°

Good

Air quality is satisfactory. Enjoy outdoor activities.

4 stations

Nearby Monitoring Stations

AQI Forecast

25 5pm

15 8pm

21 11pm

24 2am

25 5am

25 8am

24 11am

24 2pm

Air Quality Index Trend

47h · 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.

60.3%

Humidity

19.3 km/h

Wind WNW

1019.4 hPa

Pressure

0.7

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

3.71 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Johnston?

Temperature & Precipitation

PM2.5 Trend

47h · 3 stations

PM2.53.71 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX0.7

Low

Station readings (4 stations within 25 km)

3.71

Median

4.2

Average

1.4

Low

7.2

High

PM2.5 µg/m³ · Model: 5.9 · Bias: +2.2

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: 4.1°C

Where are air quality stations near Johnston?

Near Road, Rhode Island, USA

7.4 km PM2.5: 7.4 µg/m³

Near Road, Rhode Island, USA

7.4 km PM2.5: 6.7 µg/m³

Near Road, Rhode Island, USA

7.4 km PM2.5: 10.3 µg/m³

CCRI Providence, Rhode Island, USA

7.9 km PM2.5: 8.6 µg/m³

CCRI Providence, Rhode Island, USA

7.9 km PM2.5: 5.0 µg/m³

SUEZ Waterpump Station

10.9 km PM2.5: 4.0 µg/m³

E Providence, Rhode Island, USA

12.2 km PM2.5: 8.4 µg/m³

W Greenwich, Rhode Island, USA

29.0 km PM2.5: 5.5 µg/m³

W Greenwich, Rhode Island, USA

29.0 km PM2.5: 2.2 µg/m³

What cities are near Johnston?

16 North Providence 12 Cranston 16 Providence 19 East Providence 17 Smithfield 21 Pawtucket 20 Central Falls 20 West Warwick 18 Warwick 18 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 2026-05-29T00:12 UTC.