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

May 05, 2021 16:46 (ET) (All times are in ET)
Agency Ozone PM2.5 PM10
AB1 05/05 15:00 05/05 15:00 02/25 09:00
AF1   05/05 16:00  
AIR      
AKC      
AL2 05/05 15:00 05/05 15:00 05/05 15:00
AL3      
AL4 05/05 15:00 05/05 15:00  
ALG   05/05 15:00  
AR1 05/05 15:00 05/05 15:00  
AZ2 05/05 15:00 05/05 15:00 05/05 15:00
AZ3 02/11 22:00 02/11 22:00 02/11 22:00
AZ4 05/05 15:00 05/05 15:00 05/05 15:00
AZE   03/05 03:00  
BAA   05/03 09:00  
BC1 05/05 15:00 05/05 15:00 04/07 15:00
BC2 05/05 15:00 05/05 15:00 05/05 15:00
BI1   05/05 15:00  
BIH   05/05 16:00  
BK1      
BLW 05/05 15:00 05/05 15:00  
BPT 05/05 15:00 05/05 15:00 05/05 15:00
CA1 05/05 15:00 05/05 15:00 08/27 03:00
CA2 05/05 15:00 05/05 15:00  
CA3 05/05 15:00 05/05 15:00 05/05 15:00
CA4 05/05 15:00 05/05 15:00  
CA5 05/05 15:00 05/05 15:00 05/05 15:00
CA6 05/05 15:00 05/05 15:00 05/05 15:00
CA8 05/05 15:00 05/05 16:00 05/05 15:00
CA9 05/05 15:00 05/05 15:00 05/05 15:00
CAT 05/05 15:00 05/05 15:00  
CHD   05/05 14:00  
CHO 11/29 13:00    
CI1   05/05 15:00  
CMB   05/05 15:00  
CN1 05/05 15:00 05/05 15:00  
CN3 05/05 15:00 05/05 15:00 05/05 15:00
CN4      
CO1 05/05 15:00 05/05 15:00 05/05 15:00
CO4      
CRI   05/05 15:00  
CT1 05/05 15:00 05/05 15:00 05/05 15:00
CUR 04/30 07:00 04/30 07:00  
DC1 05/05 15:00 05/05 16:44 04/23 12:00
DE1 05/05 15:00 05/05 15:00  
DN1      
DRN   05/05 15:00  
DUS   05/05 15:00  
EGY   03/16 14:00  
EP1      
EPA   08/21 12:00  
FL0      
FL1 05/05 15:00 05/05 15:00 05/05 15:00
FL2 05/05 15:00 05/05 15:00 05/05 15:00
FL3 05/05 15:00 05/05 15:00 05/05 15:00
FL4 05/05 15:00 05/05 15:00 05/05 15:00
FS1 05/05 15:00 05/05 16:00 05/05 16:00
GAB   03/27 03:00  
GBU 05/05 15:00 05/05 15:00 05/05 15:00
GH1   05/05 15:00  
GN1   05/05 15:00  
GOL      
GT1   05/05 15:00  
HC1   05/05 15:00  
HI1 05/05 15:00 05/05 15:00 05/05 15:00
IA2 05/05 15:00 05/05 15:00  
IA3 05/05 15:00 05/05 15:00  
ID1 05/05 15:00 05/05 16:00 05/05 15:00
IL1 05/05 15:00 05/05 15:00  
IN4 05/05 15:00 05/05 15:00 05/05 15:00
JDA   05/05 14:00  
JOR   11/01 21:00  
JP1 12/30 02:00 12/30 02:00 12/30 02:00
KAZ   05/05 14:00  
KE1   01/26 09:00  
KM1 05/05 16:00 05/05 16:00  
KS1 05/05 15:00 05/05 15:00 05/05 15:00
KY1 05/05 15:00 05/05 15:00  
KY2 05/05 15:00 05/05 15:00 05/05 15:00
KZ1   05/05 15:00  
LA1 05/05 15:00 05/05 15:00 02/01 00:00
LAO   05/05 15:00  
LC1      
MA1 05/05 15:00 05/05 15:00  
MAD   05/05 15:00  
MD1 05/05 15:00 05/05 15:00 05/05 15:00
ME1 05/05 15:00 05/05 15:00 05/05 15:00
MEN 05/05 15:00 05/05 15:00 05/05 15:00
MEX      
ML1   05/05 13:00  
MLD   10/01 14:00  
MM1 05/05 15:00 05/05 15:00  
MMR   05/05 16:00  
MO1 05/05 15:00 05/05 15:00 05/05 15:00
MOE      
MON 05/05 15:00 05/05 15:00 05/05 15:00
MT1 05/05 15:00 05/05 15:00 05/05 15:00
MY1   03/03 14:00  
NC1 05/05 15:00 05/05 15:00 05/05 15:00
NC2 05/05 15:00 05/05 15:00 05/05 15:00
NCA 05/05 15:00 05/05 14:00 05/05 15:00
NE2 05/05 15:00 05/05 15:00 05/05 15:00
NEA   05/05 16:00  
NH1 05/05 15:00 05/05 15:00 05/05 15:00
NI1   05/05 14:00  
NI2   05/05 14:00  
NJ1 05/05 15:00 05/05 15:00  
NL1 05/05 15:00 05/05 15:00  
NM2 05/05 15:00 05/05 15:00 05/05 15:00
NOS 05/05 14:00 05/05 15:00  
NPS 05/05 15:00 05/05 16:00  
NRB   12/31 18:26 12/31 18:26
NV2 05/05 15:00 05/05 15:00 05/05 15:00
NV3 05/05 15:00 05/05 15:00 05/05 15:00
OAP 05/05 16:00    
OAQ 05/05 15:00 05/05 15:00 05/05 15:00
OAR      
OD1   06/06 12:00  
OH1 05/05 15:00 05/05 15:00 05/05 15:00
OK1 05/05 15:00 05/05 15:00 05/05 15:00
OR1 05/05 15:00 05/05 15:00  
OR2 10/01 08:00 05/05 15:00  
PA3 05/05 15:00 05/05 15:00  
PIN      
PK1   05/05 15:00  
PK2   05/05 15:00  
PK3   05/05 15:00  
PK4   05/05 15:00  
QA1   12/30 11:00  
RI1 05/05 15:00 05/05 15:00  
RIY   06/23 09:00  
SC1 05/05 15:00 05/05 15:00 05/05 15:00
SEN      
SFN 03/05 07:00    
SHA 05/05 15:00 05/05 15:00  
SIC      
SK1 05/05 15:00 05/05 15:00 08/21 16:00
SLO 05/05 15:00 05/05 15:00 05/05 15:00
SMA 02/04 05:00 02/04 05:00 08/07 09:00
SMJ 05/05 15:00   05/05 15:00
SR1 05/05 15:00   05/05 15:00
SU1   05/05 15:00  
SY1   02/23 18:00  
THM 05/05 15:00 05/05 16:00  
TKM      
TN1 05/05 15:00 05/05 15:00  
TN2 05/05 14:00 05/05 15:00 01/01 00:00
TN3 05/05 15:00 05/05 15:00 11/01 00:00
TPCD 09/23 10:00 09/23 10:00 09/23 10:00
TX1 05/05 15:00 05/05 15:00 05/05 15:00
UDA      
UNR      
UTE 05/05 15:00 06/01 01:00  
UZB 05/05 09:00 05/05 09:00  
VA1 05/05 15:00 05/05 15:00  
VG1   01/23 19:24  
VT1 05/05 15:00 05/05 15:00 05/05 15:00
WI1 05/05 15:00 05/05 15:00 05/05 15:00
WT1 05/05 15:00    
WV2 05/05 15:00 05/05 15:00  
YER