The following tables list the frequencies and telephone numbers of on-site weather observation systems located at Illinois airports. The data in these tables change periodically, so check this page frequently. Remember, a good weather briefing before your flight is your best insurance for a safe flight.

CITY - AIRPORT NAME

ID

FREQ.

PHONE #

STATUS

Aurora - Aurora Municipal

ARR

125.850 MHz (ATIS)

(630) 466-4024

Commissioned

Bloomington - Central IL Reg. *(AWSS)

BMI

135.350 MHz (ATIS)

(309) 661-9478

Commissioned

Cahokia -St. Louis Downtown Parks

CPS

127.850 MHz (ATIS)

(618) 332-0001

Commissioned

Carbondale - Southern Illinois

MDH

119.850 MHz (ATIS)

(618) 529-1821

Commissioned

Champaign - University of Illinois/Willard

CMI

124.850 MHZ (ATIS)

(217) 352-9118

Commissioned

Chicago - Midway

MDW

132.750 MHz (ATIS)

(773) 581-9967

Commissioned

Chicago - O'Hare International

ORD

135.400 MHz (ATIS)

(773) 462-0118

Commissioned

Decatur - Decatur

DEC

126.350 MHz (ATIS)

(217) 429-0052

Commissioned

Lawrenceville - Vincennes

LWV

118.000 MHz (VHF)

(618) 943-5252

Commissioned

Mattoon - Coles County Memorial

MTO

109.400 MHZ (VOR)

(217) 234-8442

Commissioned

Moline - Quad City International

MLI

121.200 MHz (ATIS)

(309) 799-7096

Commissioned

Peoria - Greater Peoria Regional

PIA

126.100 MHz (ATIS)

(309) 697-3611

Commissioned

Quincy - Quincy Regional

UIN

118.325 MHz (VHF)

(217) 885-3319

Commissioned

Rockford - Greater Rockford

RFD

126.700 MHz (ATIS)

(815) 399-0627

Commissioned

Springfield - Capital

SPI

127.650 MHz (ATIS)

(217) 789-7389

Commissioned

Waukegan - Waukegan Regional

UGN

132.400 MHz (ATIS)

(847) 782-0876

Commissioned

West Chicago - DuPage

DPA

124.800 MHz (ATIS)

(630) 584-2728

Commissioned

Wheeling - Chicago Executive

PWK

124.200 MHz (ATIS)

(847) 465-0291

Commissioned

Note: ASOS facilities are co-owned by Federal Aviation Administration (FAA) and the National Weather Service (NWS) and maintained by the FAA.

* - Automated Weather Sensor System.

(ATIS) – ATIS Frequency

(VHF) – VHF Discreet Frequency

(VOR) – VOR Frequency

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CITY - AIRPORT NAME

ID

FREQ.

PHONE #

STATUS

Alton - St. Louis Regional

ALN

128.000 MHz (ATIS)

(618) 259-7231

Commissioned

Cairo - Cairo Regional

CIR

118.025 MHz (VHF)

(618) 734-9173

Commissioned

Carmi - Carmi Municipal

CUL

118.425 KHz (VHF)

(618) 382-3760

Commissioned

Centralia - Centralia Municipal

ENL

121.125 MHz (VHF)

(618) 533-4417

Commissioned

Danville - Vermilion County

DNV

119.275 MHz (VHF)

(217) 442-4660

Commissioned

DeKalb - DeKalb/Taylor Municipal

DKB

119.075 MHz (VHF)

(815) 748-2350

Commissioned

Effingham - Effingham County Memorial