Air Quality in Johnston, United States
Windy
20.3°C · 33.1% humidity
20.3°
Feels 20.3°
18
Good
Air quality is satisfactory. Enjoy outdoor activities.
3 stations
Nearby Monitoring Stations
AQI Forecast
24
1pm
24
24
18
4pm
20
21
23
7pm
23
24
26
10pm
26
27
25
1am
25
25
24
4am
24
24
24
7am
24
24
24
10am
24
24
Air Quality Index Trend
46h · 3 stnJohnston'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 stationsPM2.54.38 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?
38
Near Road, Rhode Island, USA
32
Near Road, Rhode Island, USA
20
Near Road, Rhode Island, USA
42
CCRI Providence, Rhode Island, USA
23
CCRI Providence, Rhode Island, USA
17
SUEZ Waterpump Station
23
E Providence, Rhode Island, USA
36
W Greenwich, Rhode Island, USA
18
W Greenwich, Rhode Island, USA
What cities are near Johnston?
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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.