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

October 17, 2021 20:10 (ET) (All times are in ET)
Agency Ozone PM2.5 PM10
AB1 10/17 18:00 10/17 18:00 02/25 09:00
AF1   08/15 08:00  
AIR      
AKC      
AL2 10/17 19:00 10/17 19:00 10/17 19:00
AL3      
AL4 10/17 19:00 10/17 19:00  
ALG   10/17 19:00  
AR1 10/17 18:00 10/17 18:00  
AZ2 10/17 18:00 10/17 18:00 10/17 18:00
AZ3 10/17 18:00 10/17 18:00 10/17 18:00
AZ4 10/17 18:00 10/17 18:00 10/17 18:00
AZE   09/08 09:00  
BAA   10/12 09:00  
BC1 10/17 19:00 10/17 18:00 10/17 18:00
BC2 10/17 19:00 10/17 19:00 10/17 19:00
BFA   07/06 07:00  
BH2   10/17 19:00  
BI1   10/17 18:00  
BIH   10/17 20:00  
BK1      
BLW 10/17 19:00 10/17 18:00  
BPT 10/17 19:00 10/17 19:00 10/17 19:00
BR1      
CA1 10/17 19:00 10/17 19:00 08/27 03:00
CA2 10/17 18:00 10/17 18:00  
CA3 10/17 19:00 10/17 19:00 10/17 19:00
CA4 10/17 19:00 10/17 19:00  
CA6 10/17 18:00 10/17 18:00 10/17 18:00
CA8 10/17 18:00 10/17 18:00 10/17 18:00
CA9 10/17 19:00 10/17 19:00 10/17 19:00
CAT 10/17 18:00 10/17 18:00  
CHD   10/17 17:00  
CHO 11/29 13:00    
CI1   10/17 18:00  
CMB   10/17 18:00  
CN1 10/17 18:00 10/17 18:00  
CN3 10/17 18:00 10/17 18:00 10/17 18:00
CN4      
CO1 10/17 18:00 10/17 18:00 10/17 18:00
CO4      
COG      
CRI   10/17 18:00  
CT1 10/17 18:00 10/17 18:00 10/17 18:00
CUR 09/22 02:00 09/22 15:00  
DC1 10/17 19:00 10/17 19:00 04/23 12:00
DE1 10/17 18:00 10/17 18:00  
DN1      
DRN   07/14 09:00  
DUS   10/17 18:00  
EGY   03/16 14:00  
EMU      
EP1      
EPA   08/21 12:00  
FL0      
FL1 10/17 18:00 10/17 18:00 10/17 18:00
FL2 10/17 19:00 10/17 19:00 10/17 19:00
FL3 10/17 18:00 10/17 18:00 10/17 18:00
FL4 10/17 19:00 10/17 19:00 10/17 19:00
FS1 10/17 19:00 10/17 19:00 10/17 19:00
GAB   10/17 18:00  
GBU 10/17 18:00 10/17 18:00 10/17 18:00
GH1   10/17 19:00  
GN1   06/14 08:00  
GOL      
GT1   10/15 11:00  
HC1   10/12 22:00  
HI1 10/17 18:00 10/17 18:00 10/17 18:00
IA2 10/17 19:00 10/17 19:00  
IA3 10/17 19:00 10/17 19:00  
ID1 10/17 18:00 10/17 18:00 10/17 18:00
IL1 10/17 18:00 10/17 18:00  
JDA   10/17 17:00  
JOR   11/01 21:00  
JP1 12/30 02:00 12/30 02:00 12/30 02:00
KAZ   10/17 17:00  
KE1   10/17 17:00  
KM1 10/16 09:00 10/17 19:00  
KS1 10/17 19:00 10/17 19:00 10/17 19:00
KY1 10/17 19:00 10/17 19:00  
KY2 10/17 19:00 10/17 19:00 10/17 19:00
KYI   09/17 08:00  
KZ1   10/09 20:00  
LA1 10/17 19:00 10/17 19:00 02/01 00:00
LAO   10/17 18:00  
LC1      
MA1 10/17 10:00 10/17 15:00  
MAD   10/17 18:00  
MD1 10/17 19:00 10/17 19:00 10/17 19:00
ME1 10/17 18:00 10/17 18:00 10/16 23:00
MEN 10/17 19:00 10/17 19:00 10/17 19:00
MEX   10/17 19:00  
MGN      
ML1   05/30 13:00  
MLD   10/17 19:00  
MM1 10/17 19:00 10/17 19:00  
MMR   08/26 21:00  
MO1 10/17 19:00 10/17 19:00 10/17 19:00
MOE      
MON 10/17 19:00 10/17 19:00 10/17 19:00
MT1 10/17 18:00 10/17 18:00 10/17 18:00
MY1   03/03 14:00  
NC1 10/17 19:00 10/17 19:00 10/17 19:00
NC2 10/17 19:00 10/17 19:00 10/17 19:00
NCA 10/17 18:00 10/17 16:00 10/17 18:00
NE2 10/17 19:00 10/17 19:00 10/17 19:00
NEA   10/17 19:00  
NH1 10/17 18:00 10/17 18:00 10/17 18:00
NI1   10/17 18:00  
NI2   10/17 17:00  
NJ1 10/17 18:00 10/17 18:00  
NL1 10/17 18:00 10/17 18:00 07/07 05:57
NM2 10/17 18:00 10/17 18:00 10/17 18:00
NOS 10/17 18:00 10/17 18:00  
NPS 10/17 18:00 10/17 18:00  
NRB   12/31 18:26 12/31 18:26
NV2 10/17 18:00 10/17 18:00 10/17 18:00
NV3 10/17 18:00 10/17 18:00 10/17 18:00
OAP 10/17 18:00    
OAQ 10/17 19:00 10/17 19:00 10/17 19:00
OAR      
OD1   06/06 12:00  
OH1 10/17 18:00 10/17 18:00 10/17 18:00
OK1 10/17 19:00 10/17 19:00 10/17 19:00
OR1 10/17 19:00 10/17 19:00  
OR2 10/01 11:00 10/17 19:00  
PA3 10/17 18:00 10/17 18:00  
PIN      
PK1   10/17 18:00  
PK2   10/17 10:00  
PK3   10/17 18:00  
PK4   10/16 07:00  
QA1   12/30 11:00  
RI1 10/17 18:00 10/17 18:00  
RIY   10/14 13:00  
RWA      
SC1 10/17 19:00 10/17 19:00 10/17 19:00
SEN      
SFN 03/05 07:00    
SHA 10/17 19:00 10/17 19:00  
SIC      
SK1 10/17 18:00 10/17 18:00 08/21 16:00
SLO 10/17 06:00 10/17 06:00 10/17 06:00
SMA 02/04 05:00 02/04 05:00 08/07 09:00
SMJ 10/10 19:00   10/10 19:00
SR1 10/17 18:00   10/17 18:00
SU1   10/17 19:00  
SY1   02/23 18:00  
THM 10/17 08:00 10/17 09:00  
TKM      
TN2 10/17 18:00 10/17 19:00 01/01 00:00
TN3 10/17 17:00 10/17 17:00 11/01 00:00
TPCD 06/01 06:00 06/01 06:00 06/01 06:00
TX1 10/17 18:00 10/17 18:00 10/17 18:00
UDA      
UNR      
UTE 10/17 19:00 06/01 01:00  
UZB 06/27 16:00 10/17 18:00  
VA1 10/17 18:00 10/17 18:00  
VG1   01/23 19:24  
VT1 10/17 19:00 10/17 19:00 10/17 19:00
WA1 10/17 18:00 10/17 18:00 10/17 18:00
WI1 10/17 19:00 10/17 18:00 10/17 18:00
WT1 10/17 18:00    
WV2 10/17 19:00 10/17 19:00  
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