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Larwill Data by Site by Date (all parameters)

Use this form to retrieve hourly data collected at Larwill. Although this is the most current data, it is not considered official until it has been certified by the technical staff. This information is updated hourly.

This web page provides the most current hourly averaged data available. Our convention for time-tagging data is the beginning of each hour. For example, values shown for the noon hour are based on measurements taken from noon to 1:00 p.m. The noon average will not be calculated until after 1:00 p.m. The noon average will then be available on our external server from 1:15 p.m. to 1:30 p.m. This results in an apparent one-hour time lag in the data. We also present our data in Local Standard Time for each measuring site. For most of Indiana this is Eastern Standard Time. During Daylight Savings, this introduces another apparent one-hour time lag in the data.

Use the controls below to select a different date or time format and to control cell highlighting based on measured PM-2.5 levels. Click on the Generate Report button once you have made your selections.

Click on the Plot Data button once the tabular report has been generated to open a separate window containing data plots.

Select a different site
Month:Day:Year:Time Format:
PM-2.5 Highlights:  Moderate   Unhealthy for Sensitives   Unhealthy   Very Unhealthy   Hazardous  
Green underline for validated data

The table below contains hourly averages for all the parameters and meteorological conditions measured at Larwill for Sunday, August 9, 2020. All times shown are in EST.

Parameter MeasuredMorningAfternoon Parameter Measured POC
Mid 1:00 2:00 3:00 4:00 5:00 6:00 7:00 8:00 9:0010:0011:00Noon
Carbon Dioxide 423.0433.2436.6445.2449.7460.7466.2445.5421.3403.6 LOST NA NA Carbon Dioxide 1 R
Wind Speed 2.83.23.63.83.73.71.71.94.06.1 LOST NA NA Wind Speed 1
Resultant Wind Speed 2.73.23.53.73.63.61.71.83.75.8 LOST NA NA Resultant Wind Speed 1
Resultant Wind Direction 173183183194188175167212227245 LOST NA NA Resultant Wind Direction 1
Maximum Wind Gust 5.35.05.36.77.26.76.77.69.69.9 LOST NA NA Maximum Wind Gust 1
Std. Dev. Wind Direction 1310817141117182116 LOST NA NA Std. Dev. Wind Direction 1
Outdoor Temperature 66.563.763.664.664.563.264.069.174.178.7 LOST NA NA Outdoor Temperature 1
Relative Humidity 84959793949999857669 LOST NA NA Relative Humidity 1
PM-2.5 (Local Conditions) 15.3425.4720.1521.5625.2516.7114.8523.3629.56 LOST LOST NA NA PM-2.5 (Local Conditions) 3
Parameter MeasuredMid 1:00 2:00 3:00 4:00 5:00 6:00 7:00 8:00 9:0010:0011:00NoonParameter Measured POC
MorningAfternoon
Maximum values for each parameter are bold within the table. Minimum values are bold italic.
 R - Data from this instrument meets EPA quality assurance criteria for regulatory purposes.

Key to PM-2.5 (Local Conditions) Acceptable Highlight Colors:

The color-coding of the hourly PM-2.5 data is based on a 1-hour to 24-hour projection. This projection is based on statistics compiled over several years comparing the daily maximum 1-hour average to the midnight-to-midnight 24-hour average.
The table below shows the levels, color-coding, and suggested actions for both the 1-hour projection and the actual 24-hour standard.

Color Air Quality Rating 1-Hour
Average
(µg/m³)
24-Hour
Average
(µg/m³)
Actions to take
Moderate 15.5 - 35.4 12.1 - 35.4
  • No health impacts are expected when levels are within this range.
  • No special actions are required when levels are within this range.

PLEASE NOTE: This data has not been verified by the IDEM and may change. This is the most current data, but it is not official until it has been certified by our technical staff. Data is collected from IDEM ambient monitoring sites and may include data collected by other outside agencies. This data is updated hourly. All times shown are in local standard time unless otherwise indicated.