AirNow-Tech is a password-protected website for air quality data management analysis, and decision support. AirNow-Tech is primarily used by the federal, State, Tribal, and local air quality organizations that provide data and forecasts to the AirNow system, as well as researchers and other air data users. It allows users to:

  • Access monitoring site data, information, and polling status
  • Analyze current and past air quality events and episodes
  • Submit and analyze air quality forecasts
  • Configure EnviroFlash email services for public dissemination of air quality forecasts
  • View meteorological and air quality data
  • Generate data reports
  • Create GIS-based maps with air quality and meteorological conditions
  • Sign up for the AirNow Notifier listserve
Register for an AirNow-Tech Account

A comprehensive list of EPA air pollution data sources

Register with AirNow API for an automatic feed of AirNow air quality data

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Color Legend
Green Current Yellow 2 to 6 hrs old
Red over 6 hrs old Gray Unknown status

February 20, 2018 16:11 (ET) (All times are in ET)
Agency Ozone PM2.5 PM10
AB1 02/20 14:00 02/20 14:00 02/25 09:00
AIR      
AK1 02/20 13:00 02/20 14:00 02/20 14:00
AL1 02/20 14:00 02/20 14:00 10/28 13:00
AL2 02/20 14:00 02/20 14:00 02/20 14:00
AL3      
AL4 02/20 13:00 02/20 13:00  
AR1 02/20 14:00 02/20 14:00  
AZ1 02/20 14:00 02/20 13:00 02/20 14:00
AZ2 02/20 14:00 02/20 14:00 02/20 14:00
AZ3 02/20 15:00 02/20 15:00 02/20 15:00
AZ4 02/20 15:00 10/01 01:00 02/20 14:00
BC1 02/20 14:00 02/20 14:00 02/20 14:00
BC2 02/20 15:00 02/20 15:00 02/20 15:00
BLW 02/20 14:00 03/17 13:00  
CA0 02/20 15:00 10/04 11:00 02/20 15:00
CA1 02/20 15:00 02/20 15:00 08/27 03:00
CA3 02/20 14:00 02/20 14:00 02/20 14:00
CA4 02/20 14:00 02/20 14:00  
CA5 02/20 15:00 02/20 15:00 02/20 15:00
CA6 02/20 14:00 02/20 14:00 02/20 14:00
CA7 02/20 14:00 02/20 14:00 02/20 14:00
CA8 02/20 14:00 02/20 16:00 02/20 14:00
CA9 02/20 15:00 02/20 15:00 02/20 15:00
CAT 02/20 14:00 06/06 14:00  
CHO 12/13 09:00    
CK1 02/20 14:00 02/20 14:00 02/20 14:00
CMB   02/20 15:00  
CN1 02/20 14:00 02/20 14:00  
CN2 02/20 15:00    
CN3 02/20 13:00 02/20 13:00 02/20 13:00
CN4 02/20 14:00 02/20 14:00  
CO1 02/20 15:00 02/20 15:00 02/20 15:00
CO4      
CT1 02/20 16:09 02/20 16:06 02/20 14:00
DC1 02/20 15:00 02/20 15:00 02/20 15:00
DE1 02/20 14:00 02/20 14:00  
DN1      
EP1      
EPA   08/21 12:00  
FL1 02/20 14:00 02/20 14:00 02/20 14:00
FL2 02/20 15:00 02/20 15:00  
FL3 02/20 14:00 02/20 14:00 02/20 14:00
FL4 02/20 15:00 02/20 14:00 02/20 14:00
FS1   02/20 16:00 08/05 04:00
GBU 02/20 14:00 02/20 14:00 02/20 14:00
GOL      
HC1   02/20 14:00  
HI1 02/20 14:00 02/20 14:00 02/20 14:00
IA1 02/20 15:00 02/20 14:00 02/20 14:00
IA2 02/20 15:00 02/20 15:00  
IA3 11/01 08:00 02/20 15:00  
ID1 02/20 14:00 02/20 15:00 02/20 14:00
IEG 02/20 15:00 02/20 15:00 02/20 15:00
IL1 02/20 14:00 02/20 14:00  
IN4 02/20 15:00 02/20 14:00 02/20 14:00
JP1 12/30 02:00 12/30 02:00 12/30 02:00
KM1 02/20 15:00 02/20 15:00  
KS1 02/20 14:00 02/20 14:00 02/20 14:00
KY1 02/20 14:00 02/20 14:00  
KY2 02/20 15:00 02/20 14:00 02/20 14:00
LA1 02/20 15:00 02/20 15:00 01/03 10:00
LC1      
MA1 02/20 14:00 02/20 14:00  
MD1 02/20 14:00 02/20 14:00  
ME1 02/20 14:00 02/20 14:00 02/20 14:00
MEN 02/20 15:00 02/20 15:00 02/20 15:00
MI1 02/20 15:00 02/20 15:00 02/20 15:00
MM1 02/20 15:00 02/20 15:00  
MO1 02/20 15:00 02/20 15:00 02/20 15:00
MOE      
MON 02/20 14:00 02/20 14:00 02/20 14:00
MS1 02/20 15:00 02/20 15:00  
MT1 02/20 14:00 02/20 14:00 02/20 14:00
NC1 02/20 14:00 02/20 14:00 02/20 14:00
NC2 02/20 15:00 02/20 14:00  
NC3 02/20 15:00 02/20 14:00 11/30 23:00
NCA 02/20 15:00 02/20 14:00 02/20 14:00
NE1   02/20 15:00 02/20 15:00
NE2 02/20 15:00 02/20 15:00 02/20 15:00
NH1 02/20 15:00 02/20 15:00 02/20 15:00
NJ1 02/20 14:00 02/20 14:00  
NL1 02/20 14:00 02/20 14:00  
NM2 02/20 14:00 02/20 14:00 02/20 14:00
NOS 02/20 14:00 02/20 14:00  
NPS 02/20 14:00 02/20 14:00  
NRB   02/20 15:51 02/20 15:51
NV2 02/20 14:00 02/20 14:00 02/20 14:00
NV3 02/20 14:00 02/20 14:00 02/20 14:00
NY1 02/20 14:00 02/20 14:00 02/20 14:00
OAP 02/20 15:00    
OAQ 02/20 15:00 02/20 15:00 02/20 15:00
OAR      
OH1 02/20 15:00 02/20 14:00 02/20 14:00
OK1 02/20 15:00 02/20 15:00 02/20 15:00
OR1 02/20 14:00 02/20 14:00  
OR2 10/02 09:00 02/20 15:00  
PA1 02/20 15:00 02/20 15:00 12/31 18:00
PA3 02/20 15:00 02/20 14:00  
PIN 06/08 23:00    
PR1 02/20 14:00 02/20 14:00 02/20 14:00
QT1 12/04 09:00 02/20 14:00  
RI1 02/20 15:00 02/20 15:00  
SC1 02/16 12:00 02/16 12:00 02/16 12:00
SD1 02/20 15:00 02/20 14:00 02/20 14:00
SFN 03/05 07:00    
SHA 02/20 15:00 02/20 14:00  
SIC      
SK1 02/20 14:00 02/20 14:00 08/21 16:00
SLO 02/20 15:00 02/20 15:00 02/20 15:00
SMJ 08/07 09:00   08/07 09:00
SR1 02/20 15:00   02/20 15:00
SY1   02/20 14:00  
THM 01/09 14:00 01/01 02:00  
TN1 02/20 14:00 02/20 15:00  
TN2 02/20 15:00 02/20 13:00 02/19 15:58
TN3 02/20 14:00 02/20 14:00  
TN4   02/20 14:00  
TPCD 02/20 14:00   02/20 14:00
TRX 02/20 15:00 02/20 14:00 02/20 14:00
TX1 02/20 14:00 02/20 14:00 02/20 14:00
UDA      
UNR      
UT1 02/20 14:00 02/20 14:00 02/20 14:00
UTE 02/20 15:00 06/01 01:00  
UTS 02/20 15:00    
VA1 02/20 14:00 02/20 14:00  
VG1   02/20 16:07  
VT1 02/20 15:00 02/20 15:00  
WI1 02/20 14:00 02/20 13:00 02/20 13:00
WT1 02/20 14:00    
WV1      
WV2 02/20 15:00 02/20 15:00