Worst air pollution Lima, today and tomorrow
Today (16 July): Air quality in Lima is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 PM (O3: 37.6/100).
Tomorrow (17 July 2026): Air quality in Lima is fair. AQI improves to medium; NO2 increases to fair; O3 decreases to medium; all other pollutants stay as today. Pollution peaks around 12:00 PM (O3: 40.4/100). Airmine updates local air quality forecasts four times daily.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Lima's air quality in Ohio reflects the Great Miami River valley position in western Ohio, with vehicle emissions from I-75 and the surrounding petroleum refining — Lima hosting a major Husky Energy refinery — and manufacturing industry generating elevated industrial PM2.5 alongside primary vehicle sources. The flat Ohio plain provides generally good wind dispersal, while summer regional ozone from the Ohio Valley industrial airshed and the refinery complex's industrial emissions are the primary air quality concerns.
Today - 16 July | Pollution peaks at 12:00
AQI:
Fair
37.6/100
PM2.5 (fine particles):
Good
15.3/100
PM10 (coarse particles):
Good
15.4/100
NO2 (nitrogen dioxide):
Good
17.2/100
O3 (ozone):
Fair
37.6/100
SO2 (sulfur dioxide):
Good
3.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
6.1/100
PM1 (ultrafine particles):
Good
8.4/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 12:00
AQI:
Medium
40.4/100
PM2.5 (fine particles):
Good
10.3/100
PM10 (coarse particles):
Good
5.1/100
NO2 (nitrogen dioxide):
Fair
27.3/100
O3 (ozone):
Medium
40.4/100
SO2 (sulfur dioxide):
Good
3.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.9/100
PM1 (ultrafine particles):
Good
6.6/100
Pollen forecast in Lima
View pollen forecastAir quality forecasts for neighbourhoods and landmarks in Lima
Frequently Asked Questions
Is air quality bad in Lima right now?
On 16 July 2026, overall air quality in Lima is fair. AQI is the main air quality indicator at 37.6/100. Pollution peaks around 12:00 PM (O3: 37.6/100).
Will air quality be worse tomorrow in Lima?
On 17 July 2026, air quality conditions in Lima will be similar to today, with NO2 forecast at fair at 27.3/100. Pollution peaks around 12:00 PM (O3: 40.4/100).
When is air pollution at its worst in Lima?
Like most US cities, Lima sees air quality shift from season to season. In short, spring and autumn tend to bring the cleanest, most stable air, whereas prolonged summer heat waves are when air quality most often dips into unhealthy territory. Lake-effect winds can help clear the air on many days near the Great Lakes shoreline.
Are air quality levels in Lima 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.
Want to see air quality forecasts for other cities in United States?
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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