Worst air pollution Johnstone, today and tomorrow
Today (16 July): Air quality in Johnstone is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 7:00 PM (O3: 29.4/100).
Tomorrow (17 July 2026): Air quality in Johnstone is fair. All pollutants stay as today. Pollution peaks around 12:00 AM (O3: 24.7/100). Airmine updates local air quality forecasts four times daily.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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The A82 sees the heaviest traffic, and that shows up clearly in local roadside monitoring. The air quality picture in Johnstone reflects a typical Renfrewshire town, with traffic emissions and local commercial activity as key contributors. Thanks to the region's typical south-westerlies, pollution rarely lingers for long, which keeps average readings fairly unremarkable by UK standards.
Today - 16 July | Pollution peaks at 19:00
AQI:
Fair
29.4/100
PM2.5 (fine particles):
Good
15.5/100
PM10 (coarse particles):
Good
5.9/100
NO2 (nitrogen dioxide):
Good
0.9/100
O3 (ozone):
Fair
29.4/100
SO2 (sulfur dioxide):
Good
0.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.9/100
PM1 (ultrafine particles):
Good
11.7/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 00:00
AQI:
Fair
24.7/100
PM2.5 (fine particles):
Good
13.3/100
PM10 (coarse particles):
Good
5.2/100
NO2 (nitrogen dioxide):
Good
1.7/100
O3 (ozone):
Fair
24.7/100
SO2 (sulfur dioxide):
Good
0.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.7/100
PM1 (ultrafine particles):
Good
8.8/100
Pollen forecast in Johnstone
View pollen forecastFrequently Asked Questions
Is air quality bad in Johnstone right now?
On 16 July 2026, overall air quality in Johnstone is fair. AQI is the main air quality indicator at 29.4/100. Pollution peaks around 7:00 PM (O3: 29.4/100).
Will air quality be worse tomorrow in Johnstone?
On 17 July 2026, air quality conditions in Johnstone will be similar to today, with AQI forecast at fair at 24.7/100. Pollution peaks around 12:00 AM (O3: 24.7/100).
When is air pollution at its worst in Johnstone?
Air quality in Johnstone isn't the same all year round — it really shifts with the seasons. By summer, ozone tends to rise on bright days, while better ventilation generally keeps particulate and NO₂ levels lower than winter. In deep winter, a lack of wind lets A82 traffic fumes and woodsmoke settle instead of blowing through. Spring and autumn are typically the easiest months, air-quality-wise, for most residents.
Are air quality levels in Johnstone based on measurements or forecasts?
It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.
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Data provided by Airmine — Last update: 16 July 2026 at 10:33 CEST (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
For long term forecasts and maps, see the Airmine app