Worst air pollution Meriden, today and tomorrow
Today (16 July): Air quality in Meriden is fair. AQI, NO2, and O3 are fair; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 PM (O3: 36.7/100).
Tomorrow (17 July 2026): Air quality in Meriden is fair. All pollutants stay as today. Pollution peaks around 1:00 PM (O3: 37.6/100). 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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Meriden's air quality reflects the central Connecticut Quinnipiac River valley, with vehicle emissions from I-91 and the surrounding manufacturing legacy of the Silver City and healthcare corridor contributing local sources. The Connecticut uplands create modest topographic variation, while the broader New England regional airshed contributes upwind urban and industrial sources from the Hartford-New Haven corridor and the Quinnipiac valley provides natural ventilation on southerly wind days throughout the year.
Today - 16 July | Pollution peaks at 12:00
AQI:
Fair
36.7/100
PM2.5 (fine particles):
Good
12.4/100
PM10 (coarse particles):
Good
12.7/100
NO2 (nitrogen dioxide):
Fair
24.7/100
O3 (ozone):
Fair
36.7/100
SO2 (sulfur dioxide):
Good
3.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.5/100
PM1 (ultrafine particles):
Good
8.3/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 13:00
AQI:
Fair
37.6/100
PM2.5 (fine particles):
Good
8.0/100
PM10 (coarse particles):
Good
3.2/100
NO2 (nitrogen dioxide):
Fair
27.7/100
O3 (ozone):
Fair
37.6/100
SO2 (sulfur dioxide):
Good
1.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.2/100
PM1 (ultrafine particles):
Good
6.6/100
Pollen forecast in Meriden
View pollen forecastFrequently Asked Questions
Is air quality bad in Meriden right now?
On 16 July 2026, overall air quality in Meriden is fair. AQI is the main air quality indicator at 36.7/100. Pollution peaks around 12:00 PM (O3: 36.7/100).
Will air quality be worse tomorrow in Meriden?
On 17 July 2026, air quality conditions in Meriden will be similar to today, with AQI forecast at fair at 37.6/100. Pollution peaks around 1:00 PM (O3: 37.6/100).
When is air pollution at its worst in Meriden?
Meriden's air quality has a clear seasonal rhythm, as the cleanest conditions typically arrive with the more unsettled weather of spring and autumn; by contrast, summer heat waves, often worsened by haze drifting in from other regions, bring the year's worst air. Winter cold fronts tend to clear the air quickly, so extended pollution episodes are relatively uncommon.
Are air quality levels in Meriden 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