Air Quality in Johnston, United States

Windy
26.8°C · 30.3% humidity
26.8°
Feels 26.8°
52
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
Model forecast

Nearby Monitoring Stations

AQI Forecast
25 11pm
25
27
52 2am
45
40
36 5am
34
32
37 8am
29
29
28 11am
28
28
27 2pm
27
27
34 5pm
34
34
34 8pm
34
27
AD 728×90

Air Quality Index Trend

40h · 4 stn

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.

30.3%
Humidity
53.3 km/h
Wind WNW
1009.7 hPa
Pressure
2.2
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
52
12.85 µg/m³
PM10
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Johnston?

Temperature & Precipitation

PM2.5 Trend

40h · 4 stations
PM2.512.85 µg/m³ ✓ WHO
Moderate
PM1020.55 µg/m³
Good
UV INDEX2.2
Moderate
AD 300×250

What is the 7-day forecast for Johnston?

08-03
26.8° 17.9°
1.0 mm
08-04
36.7° 16.8°
0.19 mm
08-05
34.8° 21.6°
08-06
29.4° 17.2°
1.81 mm
08-07
31.2° 19.8°
6.06 mm
08-08
27.7° 18.9°
0.44 mm
08-09
40.1° 22.7°
0.31 mm
Both models agree Avg diff: 3.8°C

Where are air quality stations near Johnston?

18
CCRI Providence, Rhode Island, USA
7.9 km PM2.5: 4.3 µg/m³
33
CCRI Providence, Rhode Island, USA
7.9 km PM2.5: 7.9 µg/m³
30
W Greenwich, Rhode Island, USA
29.0 km PM2.5: 7.2 µg/m³
18
W Greenwich, Rhode Island, USA
29.0 km PM2.5: 4.3 µg/m³

What cities are near Johnston?

42 North Providence 45 Cranston 42 Providence 42 East Providence 52 Smithfield 42 Pawtucket 42 Central Falls 34 West Warwick 45 Warwick 42 Cumberland
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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-08-08T06:30 UTC.