Air Quality in Johnston, United States
Partly Cloudy
17.3°C · 52.9% humidity
17.3°
Feels 17.3°
26
Good
Air quality is satisfactory. Enjoy outdoor activities.
Model forecast
Nearby Monitoring Stations
Johnston's air quality — share it
AQI Forecast
25
4pm
25
25
26
7pm
27
27
27
10pm
27
27
25
1am
25
25
25
4am
25
25
25
7am
25
25
25
10am
25
25
25
1pm
25
27
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. Current PM2.5 concentration in Johnston is 1.2× the WHO annual guideline of 5 µg/m³.
52.9%
Humidity
39.7 km/h
Wind ENE
1026.7 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
6.25 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Johnston?
Temperature & Precipitation
PM2.56.25 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
What is the 7-day forecast for Johnston?
05-29
30.8° 5.6°
05-30
22.4° 16.1°
9.75 mm
05-31
28.9° 11.4°
06-01
26.8° 15.6°
7.69 mm
06-02
21.8° 16.9°
2.31 mm
06-03
30.8° 23.3°
06-04
24.5° 16.0°
0.56 mm
Both models agree
Avg diff: 5.4°C
Where are air quality stations near Johnston?
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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-05-29T00:11 UTC.