Compare the Climate and Weather in Fairbury; Pontiac, Pontiac Municipal Airport; Central Illinois Regional Airport at Bloomington-Normal; Rantoul, Rantoul National Aviation Center Airport-Frank Elliott Field; and Greater Kankakee Airport

This page lets you compare and contrast the weather and climate in Fairbury; Pontiac, Pontiac Municipal Airport; Central Illinois Regional Airport at Bloomington-Normal; Rantoul, Rantoul National Aviation Center Airport-Frank Elliott Field; and Greater Kankakee Airport year round.

You can drill down to a specific season, month, and even day by clicking the graphs or using the navigation panel.

You can compare up to 6 locations. Add more locations using the search box below or by clicking the map.

Average High and Low Temperature

Compare the Average High and Low Temperature in Fairbury; Pontiac, Pontiac Municipal Airport; Central Illinois Regional Airport at Bloomington-Normal; Rantoul, Rantoul National Aviation Center Airport-Frank Elliott Field; and Greater Kankakee AirportJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F6619853379026NowNowGreater Kankakee AirportGreater Kankakee AirportRantoul, Rantoul National Aviation Center Airport-Frank Elliott FieldRantoul, Rantoul National Aviation Center Airport-Frank Elliott FieldCentral Illinois Regional Airport at Bloomington-NormalCentral Illinois Regional Airport at Bloomington-NormalPontiac, Pontiac Municipal AirportPontiac, Pontiac Municipal Airport
The daily average high and low air temperature at 2 meters above the ground. The thin dotted lines are the corresponding perceived temperatures.
HighJanFebMarAprMayJunJulAugSepOctNovDec
Fairbury 34°F38°F51°F64°F74°F82°F85°F83°F77°F65°F51°F38°F
Pontiac, Pontiac Municipal Airport 34°F38°F51°F64°F75°F83°F85°F83°F77°F65°F51°F38°F
Central Illinois Regional Airport at Bloomington-Normal 33°F37°F50°F63°F73°F82°F84°F82°F76°F64°F50°F37°F
Rantoul, Rantoul National Aviation Center Airport-Frank Elliott Field 35°F39°F51°F65°F75°F83°F86°F84°F78°F66°F52°F39°F
Greater Kankakee Airport 34°F38°F50°F63°F73°F82°F85°F83°F77°F64°F50°F38°F
LowJanFebMarAprMayJunJulAugSepOctNovDec
Fairbury 20°F23°F32°F43°F53°F62°F65°F63°F55°F44°F34°F24°F
Pontiac, Pontiac Municipal Airport 19°F22°F32°F42°F53°F62°F64°F62°F54°F43°F34°F24°F
Central Illinois Regional Airport at Bloomington-Normal 19°F22°F32°F42°F53°F62°F66°F64°F56°F45°F34°F23°F
Rantoul, Rantoul National Aviation Center Airport-Frank Elliott Field 20°F23°F33°F43°F54°F63°F66°F65°F57°F45°F35°F25°F
Greater Kankakee Airport 18°F22°F31°F41°F51°F61°F65°F63°F55°F43°F33°F23°F

Fairbury

Average Hourly Temperature in FairburyJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowfreezingvery coldcoldcoolcoolcomfortablewarmvery cold

Pontiac, Pontiac Municipal Airport

Average Hourly Temperature in Pontiac, Pontiac Municipal AirportJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowfreezingvery coldcoldcoolcoolcomfortablewarmvery cold

Central Illinois Regional Airport at Bloomington-Normal

Average Hourly Temperature in Central Illinois Regional Airport at Bloomington-NormalJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowfreezingcoldcoolcoolcomfortablewarmfreezingvery cold

Rantoul, Rantoul National Aviation Center Airport-Frank Elliott Field

Average Hourly Temperature in Rantoul, Rantoul National Aviation Center Airport-Frank Elliott FieldJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowfreezingcoldcoolcoolcomfortablewarmvery coldvery cold

Greater Kankakee Airport

Average Hourly Temperature in Greater Kankakee AirportJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowfreezingvery coldcoldcoolcoolcomfortablewarmvery cold
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Chance of Clearer Skies

Compare the Chance of Clearer Skies in Fairbury; Pontiac, Pontiac Municipal Airport; Central Illinois Regional Airport at Bloomington-Normal; Rantoul, Rantoul National Aviation Center Airport-Frank Elliott Field; and Greater Kankakee AirportJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%7043NowNowGreater Kankakee AirportGreater Kankakee AirportFairburyFairburyRantoul, Rantoul National Aviation Center Airport-Frank Elliott FieldRantoul, Rantoul National Aviation Center Airport-Frank Elliott FieldCentral Illinois Regional Airport at Bloomington-NormalCentral Illinois Regional Airport at Bloomington-NormalPontiac, Pontiac Municipal AirportPontiac, Pontiac Municipal Airport
The percentage of time the sky is clear, mostly clear, or partly cloudy (i.e., less than 60% of the sky is covered by clouds).
Clearer SkiesJanFebMarAprMayJunJulAugSepOctNovDec
Fairbury 44%45%48%51%51%57%65%68%67%60%50%44%
Pontiac, Pontiac Municipal Airport 44%45%48%50%51%57%64%68%67%60%50%43%
Central Illinois Regional Airport at Bloomington-Normal 43%44%47%51%51%57%64%68%67%60%50%43%
Rantoul, Rantoul National Aviation Center Airport-Frank Elliott Field 44%44%48%51%51%57%64%68%67%60%50%44%
Greater Kankakee Airport 43%44%47%50%51%57%64%68%67%59%49%43%

Daily Chance of Precipitation

Compare the Daily Chance of Precipitation in Fairbury; Pontiac, Pontiac Municipal Airport; Central Illinois Regional Airport at Bloomington-Normal; Rantoul, Rantoul National Aviation Center Airport-Frank Elliott Field; and Greater Kankakee AirportJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%401440NowNowGreater Kankakee AirportGreater Kankakee AirportFairburyFairburyRantoul, Rantoul National Aviation Center Airport-Frank Elliott FieldRantoul, Rantoul National Aviation Center Airport-Frank Elliott FieldCentral Illinois Regional Airport at Bloomington-NormalCentral Illinois Regional Airport at Bloomington-NormalPontiac, Pontiac Municipal AirportPontiac, Pontiac Municipal Airport
The percentage of days in which precipitation is observed, excluding trace quantities.
Days of Precip.JanFebMarAprMayJunJulAugSepOctNovDec
Fairbury 4.9d5.0d7.4d9.7d11.7d11.5d11.2d10.1d8.3d7.6d7.2d6.5d
Pontiac, Pontiac Municipal Airport 4.7d5.1d7.4d9.5d11.5d11.2d10.9d10.1d8.3d7.6d7.2d6.3d
Central Illinois Regional Airport at Bloomington-Normal 5.1d5.2d7.6d9.7d11.4d11.2d10.7d9.8d8.3d7.8d7.3d6.6d
Rantoul, Rantoul National Aviation Center Airport-Frank Elliott Field 5.3d5.4d7.8d10.1d12.1d12.0d11.1d9.8d8.1d8.1d7.3d6.7d
Greater Kankakee Airport 5.2d5.1d7.3d9.4d11.7d11.4d11.3d10.4d8.2d7.8d7.1d6.4d

Average Monthly Rainfall

Compare the Average Monthly Rainfall in Fairbury; Pontiac, Pontiac Municipal Airport; Central Illinois Regional Airport at Bloomington-Normal; Rantoul, Rantoul National Aviation Center Airport-Frank Elliott Field; and Greater Kankakee AirportJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in1 in1 in2 in2 in3 in3 in4 in4 in3.80.9NowNowGreater Kankakee AirportGreater Kankakee AirportFairburyFairburyCentral Illinois Regional Airport at Bloomington-NormalCentral Illinois Regional Airport at Bloomington-NormalPontiac, Pontiac Municipal AirportPontiac, Pontiac Municipal Airport
The average rainfall accumulated over the course of a sliding 31-day period centered on the day in question.
RainfallJanFebMarAprMayJunJulAugSepOctNovDec
Fairbury 1.0″1.2″2.1″3.1″3.7″3.7″3.3″3.3″2.9″2.6″2.5″1.7″
Pontiac, Pontiac Municipal Airport 1.0″1.2″2.0″3.1″3.7″3.7″3.3″3.3″2.9″2.6″2.4″1.7″
Central Illinois Regional Airport at Bloomington-Normal 1.0″1.2″2.1″3.2″3.8″3.7″3.3″3.2″2.9″2.7″2.5″1.6″
Rantoul, Rantoul National Aviation Center Airport-Frank Elliott Field 1.2″1.4″2.2″3.3″3.8″3.8″3.4″3.2″2.8″2.8″2.7″1.9″
Greater Kankakee Airport 1.1″1.1″2.0″3.0″3.6″3.8″3.4″3.3″2.9″2.6″2.5″1.7″

Average Monthly Snowfall

Compare the Average Monthly Snowfall in Fairbury; Pontiac, Pontiac Municipal Airport; Central Illinois Regional Airport at Bloomington-Normal; Rantoul, Rantoul National Aviation Center Airport-Frank Elliott Field; and Greater Kankakee AirportJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in1 in1 in2 in2 in3 in3 in4 in4 in5 in5 in3.74.84.0NowNowGreater Kankakee AirportGreater Kankakee AirportFairburyFairburyRantoul, Rantoul National Aviation Center Airport-Frank Elliott FieldRantoul, Rantoul National Aviation Center Airport-Frank Elliott FieldCentral Illinois Regional Airport at Bloomington-NormalCentral Illinois Regional Airport at Bloomington-NormalPontiac, Pontiac Municipal AirportPontiac, Pontiac Municipal Airport
The average snowfall accumulated over the course of a sliding 31-day period centered on the day in question.
SnowfallJanFebMarAprMayJunJulAugSepOctNovDec
Fairbury 3.5″3.3″1.2″0.2″0.0″0.0″0.0″0.0″0.0″0.0″0.5″2.8″
Pontiac, Pontiac Municipal Airport 3.4″3.3″1.2″0.2″0.0″0.0″0.0″0.0″0.0″0.0″0.6″2.6″
Central Illinois Regional Airport at Bloomington-Normal 4.5″4.2″2.0″0.5″0.0″0.0″0.0″0.0″0.0″0.0″1.2″4.6″
Rantoul, Rantoul National Aviation Center Airport-Frank Elliott Field 3.6″3.2″1.3″0.2″0.0″0.0″0.0″0.0″0.0″0.0″0.7″3.6″
Greater Kankakee Airport 3.5″3.6″1.5″0.2″0.0″0.0″0.0″0.0″0.0″0.0″0.5″2.9″

Hours of Daylight

Compare the Hours of Daylight in Fairbury; Pontiac, Pontiac Municipal Airport; Central Illinois Regional Airport at Bloomington-Normal; Rantoul, Rantoul National Aviation Center Airport-Frank Elliott Field; and Greater Kankakee AirportJanFebMarAprMayJunJulAugSepOctNovDec4 hr4 hr6 hr6 hr8 hr8 hr10 hr10 hr12 hr12 hr14 hr14 hr16 hr16 hr18 hr18 hr20 hr20 hr15.19.3NowNowGreater Kankakee AirportGreater Kankakee AirportFairburyFairburyRantoul, Rantoul National Aviation Center Airport-Frank Elliott FieldRantoul, Rantoul National Aviation Center Airport-Frank Elliott FieldCentral Illinois Regional Airport at Bloomington-NormalCentral Illinois Regional Airport at Bloomington-NormalPontiac, Pontiac Municipal AirportPontiac, Pontiac Municipal Airport
The number of hours during which the Sun is at least partly above the horizon.
DaylightJanFebMarAprMayJunJulAugSepOctNovDec
Fairbury 9.6h10.7h12.0h13.3h14.5h15.1h14.7h13.7h12.4h11.1h9.9h9.3h
Pontiac, Pontiac Municipal Airport 9.6h10.7h12.0h13.4h14.5h15.1h14.8h13.7h12.4h11.1h9.9h9.3h
Central Illinois Regional Airport at Bloomington-Normal 9.7h10.7h12.0h13.3h14.5h15.0h14.7h13.7h12.4h11.1h9.9h9.3h
Rantoul, Rantoul National Aviation Center Airport-Frank Elliott Field 9.7h10.7h12.0h13.3h14.4h15.0h14.7h13.7h12.4h11.1h9.9h9.4h
Greater Kankakee Airport 9.6h10.7h12.0h13.4h14.5h15.1h14.8h13.7h12.4h11.1h9.9h9.3h

Chance of Muggy Conditions

Compare the Chance of Muggy Conditions in Fairbury; Pontiac, Pontiac Municipal Airport; Central Illinois Regional Airport at Bloomington-Normal; Rantoul, Rantoul National Aviation Center Airport-Frank Elliott Field; and Greater Kankakee AirportJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%6056NowNowGreater Kankakee AirportGreater Kankakee AirportFairburyFairburyRantoul, Rantoul National Aviation Center Airport-Frank Elliott FieldRantoul, Rantoul National Aviation Center Airport-Frank Elliott FieldCentral Illinois Regional Airport at Bloomington-NormalCentral Illinois Regional Airport at Bloomington-NormalPontiac, Pontiac Municipal AirportPontiac, Pontiac Municipal Airport
The percentage of time that is muggy, oppressive, or miserable (i.e., a dew point greater than 65°F).
Muggy daysJanFebMarAprMayJunJulAugSepOctNovDec
Fairbury 0.0d0.0d0.0d0.3d3.0d10.7d17.8d15.3d5.9d0.7d0.0d0.0d
Pontiac, Pontiac Municipal Airport 0.0d0.0d0.0d0.3d2.9d10.4d17.7d15.3d5.7d0.7d0.0d0.0d
Central Illinois Regional Airport at Bloomington-Normal 0.0d0.0d0.0d0.2d3.0d10.2d16.8d14.6d5.8d0.7d0.0d0.0d
Rantoul, Rantoul National Aviation Center Airport-Frank Elliott Field 0.0d0.0d0.0d0.4d3.8d12.6d18.6d15.3d6.3d0.7d0.1d0.0d
Greater Kankakee Airport 0.0d0.0d0.0d0.2d2.6d9.0d16.3d14.1d5.7d0.7d0.0d0.0d

Average Wind Speed

Compare the Average Wind Speed in Fairbury; Pontiac, Pontiac Municipal Airport; Central Illinois Regional Airport at Bloomington-Normal; Rantoul, Rantoul National Aviation Center Airport-Frank Elliott Field; and Greater Kankakee AirportJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mph12.87.3NowNowGreater Kankakee AirportGreater Kankakee AirportFairburyFairburyRantoul, Rantoul National Aviation Center Airport-Frank Elliott FieldRantoul, Rantoul National Aviation Center Airport-Frank Elliott FieldPontiac, Pontiac Municipal AirportPontiac, Pontiac Municipal Airport
The average of mean hourly wind speeds at 10 meters above the ground.
Wind Speed (mph)JanFebMarAprMayJunJulAugSepOctNovDec
Fairbury 12.112.012.512.410.79.07.77.58.810.511.711.8
Pontiac, Pontiac Municipal Airport 12.112.012.512.310.79.07.87.68.910.511.711.7
Central Illinois Regional Airport at Bloomington-Normal 12.112.112.612.510.79.07.87.68.910.611.811.8
Rantoul, Rantoul National Aviation Center Airport-Frank Elliott Field 12.112.012.512.310.68.97.67.58.710.411.711.7
Greater Kankakee Airport 12.112.012.412.210.69.07.87.68.910.511.611.7

Average Water Temperature

Compare the Average Water Temperature in Fairbury; Pontiac, Pontiac Municipal Airport; Central Illinois Regional Airport at Bloomington-Normal; Rantoul, Rantoul National Aviation Center Airport-Frank Elliott Field; and Greater Kankakee AirportJanFebMarAprMayJunJulAugSepOctNovDec30°F30°F35°F35°F40°F40°F45°F45°F50°F50°F55°F55°F60°F60°F65°F65°F70°F70°F75°F75°FNaNNaNNaNNaN7335NowNowGreater Kankakee AirportGreater Kankakee Airport
The daily average wide-area surface water temperature.
Water Temp.JanFebMarAprMayJunJulAugSepOctNovDec
Greater Kankakee Airport 38°F35°F36°F39°F45°F57°F69°F72°F67°F58°F49°F42°F

Tourism Score

Compare the Tourism Score in Fairbury; Pontiac, Pontiac Municipal Airport; Central Illinois Regional Airport at Bloomington-Normal; Rantoul, Rantoul National Aviation Center Airport-Frank Elliott Field; and Greater Kankakee AirportJanFebMarAprMayJunJulAugSepOctNovDec002244668810106.50.1NowNowGreater Kankakee AirportGreater Kankakee AirportFairburyFairburyRantoul, Rantoul National Aviation Center Airport-Frank Elliott FieldRantoul, Rantoul National Aviation Center Airport-Frank Elliott FieldPontiac, Pontiac Municipal AirportPontiac, Pontiac Municipal Airport
The tourism score, which favors clear, rainless days with perceived temperatures between 65°F and 80°F.

Beach/Pool Score

Compare the Beach/Pool Score in Fairbury; Pontiac, Pontiac Municipal Airport; Central Illinois Regional Airport at Bloomington-Normal; Rantoul, Rantoul National Aviation Center Airport-Frank Elliott Field; and Greater Kankakee AirportJanFebMarAprMayJunJulAugSepOctNovDec002244668810105.6NowNowGreater Kankakee AirportGreater Kankakee AirportFairburyFairburyPontiac, Pontiac Municipal AirportPontiac, Pontiac Municipal Airport
The beach/pool score, which favors clear, rainless days with perceived temperatures between 75°F and 90°F.

Growing Season

Compare the Growing Season in Fairbury; Pontiac, Pontiac Municipal Airport; Central Illinois Regional Airport at Bloomington-Normal; Rantoul, Rantoul National Aviation Center Airport-Frank Elliott Field; and Greater Kankakee AirportJanFebMarAprMayJunJulAugSepOctNovDec0%0%20%20%40%40%60%60%80%80%100%100%NowNowGreater Kankakee AirportGreater Kankakee AirportFairburyFairburyRantoul, Rantoul National Aviation Center Airport-Frank Elliott FieldRantoul, Rantoul National Aviation Center Airport-Frank Elliott FieldPontiac, Pontiac Municipal AirportPontiac, Pontiac Municipal Airport
The percentage chance that a given day is within the growing season, defined as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

Growing Degree Days

Compare the Growing Degree Days in Fairbury; Pontiac, Pontiac Municipal Airport; Central Illinois Regional Airport at Bloomington-Normal; Rantoul, Rantoul National Aviation Center Airport-Frank Elliott Field; and Greater Kankakee AirportJanFebMarAprMayJunJulAugSepOctNovDec500°F500°F1,000°F1,000°F1,500°F1,500°F2,000°F2,000°F2,500°F2,500°F3,000°F3,000°F3,500°F3,500°F4,000°F4,000°FNowNowGreater Kankakee AirportGreater Kankakee AirportFairburyFairburyRantoul, Rantoul National Aviation Center Airport-Frank Elliott FieldRantoul, Rantoul National Aviation Center Airport-Frank Elliott FieldCentral Illinois Regional Airport at Bloomington-NormalCentral Illinois Regional Airport at Bloomington-NormalPontiac, Pontiac Municipal AirportPontiac, Pontiac Municipal Airport
The average growing degree days accumulated over the course of the year, where growing degree days are defined as the integral of warmth above a base temperature (50°F in this case).

Average Daily Incident Shortwave Solar Energy

Compare the Average Daily Incident Shortwave Solar Energy in Fairbury; Pontiac, Pontiac Municipal Airport; Central Illinois Regional Airport at Bloomington-Normal; Rantoul, Rantoul National Aviation Center Airport-Frank Elliott Field; and Greater Kankakee AirportJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh6.91.8NowNowGreater Kankakee AirportGreater Kankakee AirportFairburyFairburyRantoul, Rantoul National Aviation Center Airport-Frank Elliott FieldRantoul, Rantoul National Aviation Center Airport-Frank Elliott FieldCentral Illinois Regional Airport at Bloomington-NormalCentral Illinois Regional Airport at Bloomington-NormalPontiac, Pontiac Municipal AirportPontiac, Pontiac Municipal Airport
The average daily shortwave solar energy reaching the ground per square meter.
Solar Energy (kWh)JanFebMarAprMayJunJulAugSepOctNovDec
Fairbury 2.13.04.25.46.26.76.76.15.13.62.41.8
Pontiac, Pontiac Municipal Airport 2.13.04.25.46.26.76.76.15.03.62.31.8
Central Illinois Regional Airport at Bloomington-Normal 2.23.14.35.46.26.76.76.15.13.72.41.9
Rantoul, Rantoul National Aviation Center Airport-Frank Elliott Field 2.23.14.35.46.26.76.76.25.13.72.41.9
Greater Kankakee Airport 2.13.04.25.36.26.76.76.15.03.62.31.8

This report illustrates the typical weather for Fairbury; Pontiac, Pontiac Municipal Airport; Central Illinois Regional Airport at Bloomington-Normal; Rantoul, Rantoul National Aviation Center Airport-Frank Elliott Field; and Greater Kankakee Airport year round, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

The details of the data sources used on this page vary between places and are discussed in detail on each place's dedicated page:

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.

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