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

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

December 03, 2021 22:53 (ET) (All times are in ET)
Agency Ozone PM2.5 PM10
AB1 12/03 21:00 12/03 21:00 02/25 09:00
AF1   08/15 08:00  
AIR      
AKC      
AL2 12/03 21:00 12/03 21:00 12/03 21:00
AL3      
AL4 11/01 11:00 12/03 21:00  
ALG   11/03 20:00  
AR1 12/03 21:00 12/03 21:00  
AZ2 12/03 21:00 12/03 21:00 12/03 21:00
AZ3 12/03 21:00 12/03 21:00 12/03 21:00
AZ4 12/03 21:00 12/03 21:00 12/03 21:00
AZE   11/19 18:00  
BAA   11/19 18:00  
BC1 12/03 21:00 12/03 21:00 12/03 21:00
BC2 12/03 21:00 12/03 21:00 12/03 21:00
BFA   07/06 07:00  
BH2   12/03 20:00  
BI1   12/03 21:00  
BIH   12/03 22:00  
BK1      
BLW 12/03 21:00 12/03 21:00  
BPT 12/03 21:00 12/03 21:00 12/03 21:00
BR1      
CA1 12/03 21:00 12/03 21:00 08/27 03:00
CA2 12/03 21:00 12/03 21:00  
CA3 12/03 21:00 12/03 21:00 12/03 21:00
CA4 12/03 21:00 12/03 21:00  
CA6 12/03 21:00 12/03 21:00 12/03 21:00
CA8 12/03 21:00 12/03 21:00 12/03 21:00
CA9 12/03 21:00 12/03 21:00 12/03 21:00
CAT 11/23 08:00 12/03 21:00  
CHD   12/03 20:00  
CHO 11/29 13:00    
CI1   12/03 21:00  
CMB   11/27 15:00  
CN1 12/03 21:00 12/03 21:00  
CN3 12/03 20:00 12/03 20:00 12/03 20:00
CN4      
CO1 12/03 21:00 12/03 21:00 12/03 21:00
CO4      
COG      
CRI   12/03 21:00  
CT1 12/03 04:00 12/03 04:00 12/03 04:00
CUR 09/22 02:00 09/22 15:00  
DC1 12/03 22:52 12/03 21:00 12/03 21:00
DE1 12/03 21:00 12/03 21:00  
DN1      
DRN   07/14 09:00  
DUS   12/03 21:00  
EGY   03/16 14:00  
EMU      
EP1      
EPA   08/21 12:00  
FL0      
FL1 12/03 21:00 12/03 21:00 12/03 21:00
FL2 12/03 21:00 12/03 21:00 12/03 21:00
FL3 12/03 21:00 12/03 21:00 12/03 21:00
FL4 12/03 21:00 12/03 21:00 12/03 21:00
FS1 12/03 21:00 12/03 22:00 12/03 22:00
GAB   12/03 21:00  
GBU 12/03 21:00 12/03 21:00 12/03 21:00
GH1   12/03 21:00  
GN1   06/14 08:00  
GOL      
GT1 12/03 21:00 12/03 21:00 12/03 21:00
HC1   12/03 21:00  
HI1 12/03 21:00 12/03 21:00 12/03 21:00
IA2 11/23 12:00 12/03 21:00  
IA3 11/01 05:00 12/03 21:00  
ID1 12/03 21:00 12/03 22:00 12/03 21:00
IL1 12/03 21:00 12/03 21:00  
JDA   12/03 20:00  
JOR   11/01 21:00  
JP1 12/30 02:00 12/30 02:00 12/30 02:00
KAZ   12/03 20:00  
KE1   12/03 20:00  
KM1 12/03 22:00 12/03 22:00  
KS1 12/03 21:00 12/03 21:00 12/03 21:00
KY1 12/03 21:00 12/03 21:00  
KY2 12/03 21:00 12/03 21:00 12/03 21:00
KYI   09/17 08:00  
KZ1   12/03 21:00  
LA1 12/03 21:00 12/03 21:00 02/01 00:00
LAO   12/03 21:00  
LC1      
MA1 12/03 21:00 12/03 21:00  
MAD   12/03 21:00  
MD1 12/03 21:00 12/03 21:00 12/03 21:00
ME1 12/03 21:00 12/03 21:00 12/03 21:00
MEN 12/03 21:00 12/03 21:00 12/03 21:00
MEX   12/03 21:00  
MGN      
ML1   12/03 20:00  
MLD   12/03 22:00  
MM1 12/03 21:00 12/03 21:00  
MMR   12/03 22:00  
MO1 12/03 21:00 12/03 21:00 12/03 21:00
MOE      
MON 12/03 21:00 12/03 21:00 12/03 21:00
MY1   03/03 14:00  
NC1 12/03 21:00 12/03 21:00 12/03 21:00
NC2 12/03 21:00 12/03 21:00 12/03 21:00
NCA 11/18 19:00 12/03 21:00 11/18 19:00
NE2 12/03 21:00 12/03 21:00 12/03 21:00
NEA   12/03 22:00  
NH1 12/03 21:00 12/03 21:00 12/03 21:00
NI1   12/03 20:00  
NI2   12/03 05:00  
NJ1 12/03 21:00 12/03 21:00  
NL1 12/03 21:00 12/03 21:00 07/07 05:57
NM2 12/03 21:00 12/03 21:00 12/03 21:00
NOS 12/03 21:00 12/03 21:00  
NPS 12/03 21:00 12/03 21:00  
NRB   12/31 18:26 12/31 18:26
NV3 12/03 21:00 12/03 21:00 12/03 21:00
OAP 12/03 21:00    
OAQ 12/03 21:00 12/03 21:00 12/03 21:00
OAR      
OCN      
OD1   06/06 12:00  
OH1 12/03 21:00 12/03 21:00 12/03 21:00
OK1 12/03 21:00 12/03 21:00 12/03 21:00
OR1 12/03 21:00 12/03 21:00  
OR2 10/01 11:00 12/03 21:00  
PA3 12/03 21:00 12/03 21:00  
PIN      
PK1   12/03 20:00  
PK2   11/11 10:00  
PK3   10/21 05:00  
PK4   12/02 09:00  
QA1   12/30 11:00  
RI1 12/03 21:00 12/03 21:00  
RIY   12/03 20:00  
RWA   10/29 12:00  
SC1 12/03 21:00 12/03 21:00 12/03 21:00
SEN      
SFN 03/05 07:00    
SHA 12/03 21:00 12/03 21:00  
SIC      
SK1 12/03 21:00 12/03 21:00 08/21 16:00
SLO 12/03 21:00 12/03 21:00 12/03 21:00
SMA 02/04 05:00 02/04 05:00 08/07 09:00
SMJ 11/18 22:00   11/18 22:00
SR1 12/03 21:00   12/03 21:00
SU1   12/03 21:00  
SY1   12/03 21:00  
THM 12/03 20:00 12/03 21:00  
TKM      
TN2 12/03 21:00 12/03 20:00 01/01 00:00
TN3 12/03 21:00 12/03 21:00 11/01 00:00
TPCD 06/01 06:00 06/01 06:00 06/01 06:00
TX1 12/03 21:00 12/03 21:00 12/03 21:00
UDA      
UNR      
UTE 12/03 21:00 06/01 01:00  
UZB 06/27 16:00 12/03 21:00  
VA1 12/03 21:00 12/03 21:00  
VG1   01/23 19:24  
VT1 12/03 21:00 12/03 21:00 12/03 21:00
WA1 12/03 21:00 12/03 21:00 12/03 21:00
WI1 12/03 21:00 12/03 21:00 12/03 21:00
WT1 12/03 21:00    
WV2 12/03 20:00 12/03 20:00  
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