Monthly System Maintenance 7:30 p.m. EST Wednesday, November 20, to 2:30 a.m. EST Thursday, November 21

The AirNow Data Management Center will be performing routine system maintenance from 7:30 p.m. EST Wednesday, November 20, to 2:30 a.m. EST Thursday, November 21. During this time, AirNow-Tech will not be accessible. Data feeds and products will not update or be delayed until maintenance is completed.

Thank you,

AirNow Data Management Center

Posted November 15, 2019, 11:14 (PT)

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

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

November 18, 2019 09:31 (ET) (All times are in ET)
Agency Ozone PM2.5 PM10
AB1 11/18 07:00 11/18 07:00 02/25 09:00
AF1   11/18 08:00  
AIR      
AKC      
AL2 11/18 08:00 11/18 08:00 11/18 08:00
AL3      
AL4 11/18 07:00 11/18 07:00  
ALG   11/18 07:00  
AR1 11/18 08:00 11/18 08:00  
AZ2 11/18 08:00 11/18 08:00 11/18 08:00
AZ3 11/18 08:00 11/18 08:00 11/18 08:00
AZ4 11/18 08:00 11/18 08:00 11/18 08:00
BAA   10/19 16:00  
BC1 11/18 08:00 11/18 08:00 11/18 08:00
BC2 11/18 08:00 11/18 08:00 11/18 08:00
BI1   11/18 08:00  
BIH   11/18 09:00  
BK1      
BLW 11/18 08:00 04/01 01:00  
BPT 09/11 14:00 11/18 07:00 04/14 18:00
CA1 11/18 08:00 11/18 08:00 08/27 03:00
CA2 11/18 08:00 11/18 08:00  
CA3 11/18 08:00 11/18 08:00 11/18 08:00
CA4 11/18 08:00 11/18 08:00  
CA5 11/18 08:00 11/18 08:00 11/18 08:00
CA6 11/18 07:00 11/18 07:00 11/18 07:00
CA7 11/18 08:00 11/18 08:00 11/18 08:00
CA8 11/18 08:00 11/18 08:00 11/18 08:00
CA9 11/18 08:00 11/18 08:00 11/18 08:00
CAT 11/01 14:00 11/18 08:00  
CHD      
CHO 11/14 00:00    
CI1      
CMB   11/18 08:00  
CN1 11/18 08:00 11/18 08:00  
CN3 11/15 17:00 11/18 07:00 11/18 07:00
CN4 11/18 08:00 11/18 08:00  
CO1 11/18 08:00 11/18 08:00 11/18 08:00
CO4      
CRI   11/18 08:00  
CT1 11/18 08:00 11/18 08:00 11/18 08:00
CUR 06/24 16:00 06/24 16:00  
DC1 11/18 08:00 11/18 08:00 11/18 08:00
DE1 11/18 08:00 11/18 08:00  
DN1      
DRN   11/18 08:00  
DUS   11/18 08:00  
EP1      
EPA   08/21 12:00  
FL1 11/18 08:00 11/18 08:00 11/18 08:00
FL2 11/18 08:00 11/18 08:00 09/29 15:00
FL3 11/18 08:00 11/18 08:00 11/18 08:00
FL4 11/18 08:00 11/18 08:00 11/18 08:00
FS1 11/18 08:00 11/18 09:00 08/05 04:00
GAB   11/18 08:00  
GBU 11/18 08:00 11/18 08:00 11/18 08:00
GN1   08/07 06:00  
GOL      
GT1   11/18 08:00  
HC1   11/18 08:00  
HI1 11/18 08:00 11/18 08:00 11/18 08:00
IA1 11/18 08:00 11/18 08:00 11/18 08:00
IA2 11/18 08:00 11/18 08:00  
IA3 11/04 09:00 11/18 08:00  
ID1 11/18 08:00 11/18 09:00 11/18 08:00
IL1 11/18 08:00 11/18 08:00  
IN4 11/18 08:00 11/18 08:00 11/18 08:00
JDA   11/18 00:00  
JOR   11/14 00:00  
JP1 12/30 02:00 12/30 02:00 12/30 02:00
KAZ   11/18 07:00  
KM1 11/18 09:00 11/18 09:00  
KS1 11/18 08:00 11/18 08:00 11/18 08:00
KY2 11/18 08:00 11/18 08:00 11/18 08:00
LA1 11/18 08:00 11/18 08:00 02/01 00:00
LAO   11/18 08:00  
LC1      
MA1 11/18 08:00 11/18 08:00  
MAD   11/18 08:00  
MD1 11/18 08:00 11/18 08:00  
ME1 11/18 08:00 11/18 08:00 11/18 02:00
MEN 11/18 08:00 11/18 08:00 11/18 08:00
ML1   11/16 02:00  
MLD   10/01 14:00  
MM1 11/18 08:00 11/18 08:00  
MMR 11/18 08:00 11/18 08:00  
MO1 11/18 08:00 11/18 08:00 11/18 08:00
MOE      
MON 11/18 07:00 11/18 08:00 11/18 07:00
MT1 11/18 08:00 11/18 08:00 11/18 08:00
NC2 11/18 08:00 11/18 08:00  
NCA 11/18 08:00 11/18 08:00 11/18 08:00
NE1      
NE2 11/18 08:00 11/18 08:00 11/18 08:00
NEA      
NH1 11/18 08:00 11/18 08:00 11/18 08:00
NJ1 11/18 08:00 11/18 08:00  
NL1 11/18 08:00 11/18 08:00  
NM2 11/18 08:00 11/18 08:00 11/18 08:00
NOS 11/18 07:00 11/18 08:00  
NPS 11/18 08:00 11/18 08:00  
NRB   11/18 08:48 11/18 08:48
NV2 11/18 08:00 11/18 08:00 11/18 08:00
NV3 11/18 08:00 11/18 08:00 11/18 08:00
OAP 11/18 08:00    
OAQ 11/18 08:00 11/18 08:00 11/18 08:00
OAR      
OD1   06/06 12:00  
OH1 11/18 08:00 11/18 08:00 11/18 08:00
OK1 11/18 08:00 11/18 08:00 11/18 08:00
OR1 11/18 08:00 11/18 08:00  
OR2 10/01 15:00 11/18 08:00  
PA3 11/18 08:00 11/18 08:00  
PIN      
PK1   11/18 08:00  
PK2   11/14 00:00  
PK3   11/18 08:00  
PK4   11/18 08:00  
RI1 11/18 07:00 11/18 07:00  
RIY   07/08 06:00  
SC1 11/18 08:00 11/18 08:00 11/18 08:00
SD1 11/18 08:00 11/18 08:00 11/18 08:00
SFN 03/05 07:00    
SHA 11/18 08:00    
SIC      
SIS 11/18 08:00 11/18 08:00  
SK1 11/18 08:00 11/18 08:00 08/21 16:00
SLO 11/18 08:00 11/18 08:00 11/18 08:00
SMJ 08/07 09:00   08/07 09:00
SR1 11/18 08:00   11/18 08:00
SU1   11/18 08:00  
SY1   11/18 08:00  
THM 11/18 08:00 11/18 09:00  
TKM      
TN1 11/01 12:00 11/18 08:00  
TN2 11/18 08:00 11/08 12:00 01/01 00:00
TN3 11/18 08:00 11/18 08:00 11/01 00:00
TPCD 11/18 07:00 11/18 07:00 11/18 07:00
TRX 11/18 08:00 11/18 08:00 11/18 08:00
TX1 11/18 08:00 11/18 08:00 11/18 08:00
UDA      
UNR      
UT1 11/18 08:00 11/18 08:00 11/18 08:00
UTE 11/18 08:00 06/01 01:00  
UZB 11/18 08:00 11/18 08:00  
VA1 11/18 08:00 11/18 08:00  
VG1   01/23 19:24  
VT1 11/18 08:00 11/18 08:00 11/18 08:00
WI1 11/18 08:00 11/18 08:00 11/18 08:00
WT1 11/18 08:00    
WV1      
WV2 11/18 08:00 11/13 11:00