

+86°
Wind
10 mph
Humidity
32 %
UV index
2 of 11

07:00 PM
+86°

09:00 PM
+74°

11:00 PM
+66°
Air Quality Alert
Issued by NWS Wilmington OH
Start: 2025 September 18, 01:44 PM
End: 2025 September 19, 01:45 PM
The Mid-Ohio Regional Planning Commission has issued an Air Quality Alert for Delaware, Fairfield, Franklin and Licking counties in Central Ohio, from 7 AM to 8 PM EDT Friday. Levels of ozone within the region may approach or exceed unhealthy standards. On Alert days, help reduce ozone by taking the following actions: * Carpool, if possible, bike, walk or take the bus instead of driving alone. * Refuel your vehicle after 8 pm. * Do not idle your vehicle, exhaust contributes to air pollution. * Mow your lawn in the evening hours and avoid the use of gas-powered lawn equipment. For additional information, please visit the Mid-Ohio Regional Planning Commission's website at morpc.org/airquality
Columbus, 09/18/2025
Weather conditions
Wind
10 mph
Rain
N/A
Temperature
+88°
Feels Like
+86°
Humidity
32 %
Pressure
1015 hPa
Cloudiness
75 %
UV Index
2
Sunrise
7:16 AM
Sunset
7:36 PM
Moonrise
3:47 AM
Moonset
6:17 PM
Precipitation Probability
0 %
Dew Point
+55°
-
CO Carbon Monoxide146.63 ppm
-
NO Nitric Oxide0.15 ppm
-
NO2 Nitrogen Dioxide1.25 ppm
-
O3 Ozone136.91 ppm
-
SO2 Sulfur Dioxide5.6 ppm
-
PM2.5 Fine Particulate Matter19.18 µg/m³
-
PM10 Coarse Particulate Matter20.84 µg/m³
-
NH3 Ammonia0 ppm
Hourly Forecast
Air Quality Forecast
Weather map in Columbus
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Learn more about Weatheradar’s weather parameters, their units of measurement, and what values to pay attention to.
Atmospheric Parameters
Pressure refers to the atmospheric pressure at sea level, measured in hectopascals (hPa). Values higher than 1020 hPa often indicate clear skies, while values below 1000 hPa may signal storms or unsettled weather.
Humidity represents the percentage of water vapor in the air. Higher values (above 70%) indicate sticky or humid conditions, often preceding rain or fog.
Temperature Parameters
"Feels Like" accounts for wind chill or humidity, making it feel colder or warmer than the actual temperature. For example, wind can make a day feel colder, while high humidity makes it feel hotter.
The dew point is the temperature at which the air becomes saturated and water vapor condenses. Higher dew points (>20°) indicate humid conditions, while lower dew points (<10°) mean drier weather.
UV and Precipitation
The UV Index measures ultraviolet radiation from the sun. Values 0–2 are safe, while values 6+ require sun protection (sunscreen, shade).
Precipitation Probability is the chance of rain or snow. Values above 50% indicate a moderate likelihood, while values above 80% suggest you should carry an umbrella.