Correlation between RAQMS!dG!n and AIRNow 1-hr surface PM2.5 #coincidences 10-30 and Corr > 0.5 0.94 000090601 Fort Saskatchewan AB 0.93 000065701 Morrisburg ON 0.92 000090120 Edmonton South AB 0.92 000065401 Belleville ON 0.86 000040801 CANTERBURY NB 0.84 000090130 Edmonton Central AB 0.84 000061104 Peterborough ON 0.83 000061201 Cornwall ON 0.82 000060303 Kingston ON 0.82 000054401 Saint-Anicet QC 0.82 000051501 Zéphirin QC 0.80 000054501 L'Assomption QC 0.80 000040203 FOREST HILLS NB 0.78 040191032 Rose Elementary AZ 0.77 060832004 Lompoc H Street CA 0.73 060010011 Oakland West CA 0.69 000063301 Dorset ON 0.63 051430005 SPRNGDLE AR 0.63 010970003 CHICK. AL 0.63 000040103 FREDERICTON NB 0.62 010731010 LEEDS AL 0.62 000065201 Parry Sound ON 0.61 000020104 CHARLOTTETOWN PE 0.59 000060104 Ottawa ON 0.57 000060903 London ON 0.57 000040302 MONCTON NB 0.57 000020301 WELLINGTON PE 0.56 060610006 Roseville - N.Sunrise/Douglas CA 0.54 060590007 Anaheim CA 0.53 000090121 Edmonton East AB 0.53 000061302 St. Catharines ON Correlation between RAQMS!dG!n and AIRNow diurn-avg surface PM2.5 Mean daytime bias of RAQMS!dG!n from AIRNow 1-hr surface PM2.5 Mean nighttime bias of RAQMS!dG!n from AIRNow 1-hr surface PM2.5 Mean observed daytime surface PM2.5 (6-hourly) Mean observed cloudiness (MODIS COT) RAQMS!dG!n 18Z yesterday surface PM2.5 #coincidences and Corr > 0.5 24.50 060870007 Unknown CA 24.50 060850002 Gilory - 9th Street CA 22.50 061131003 Woodland CA 22.50 061130004 Davis CA 22.50 060970003 Santa Rosa - 5th Street CA 22.50 060750005 San Francisco - Arkansas Street CA 22.50 060670012 Folsom CA 22.50 060670011 Elk Grove CA 22.50 060670010 Sacramento - T Street CA 22.50 060670006 Sacramento - Del Paso Manor CA 22.50 060610006 Roseville - N.Sunrise/Douglas CA 22.50 060550003 Napa - Jefferson St CA 22.50 060410003 Point Reyes CA 22.50 060010011 Oakland West CA 16.60 060731010 San Diego - Beardsley Street CA 13.30 061113001 El Rio - Rio Mesa School #2 CA 13.30 061111004 Ojai - Ojai Ave. CA 13.30 060832011 GOLETA CA 13.30 060832004 Lompoc H Street CA 13.30 060830011 Santa Barbara CA 13.00 061072002 Visalia - N. Church Street CA 13.00 060798001 Atascadero CA 13.00 060792004 Mesa 2 /Nipomo CA 13.00 060290014 Bakersfield - 5558 California Ave CA 13.00 060190008 Fresno - 1st Street CA 12.60 000063701 Grand Bend ON 12.60 000062501 Tiverton ON 11.90 000065001 Barrie ON 11.90 000061502 Kitchener ON 11.90 000061402 Brantford ON 11.90 000061302 St. Catharines ON 11.90 000060512 Hamilton Downtown ON 11.90 000060424 Toronto Downtown ON 10.40 000065801 Chatham ON 10.40 000065301 Port Stanley ON 10.40 000061004 Sarnia ON 10.40 000060903 London ON 10.10 040191034 Coachline AZ 9.20 000065401 Belleville ON 9.20 000061104 Peterborough ON 9.20 000010401 Mount Pearl NF 8.90 000030310 SYDNEY NS 8.30 061112002 Simi Valley - Cochran Street CA 8.30 061110009 Piru - Pacific CA 8.30 061110007 Thousand Oaks - Moorpark Road CA 8.30 060731008 Camp Pendleton CA 8.30 060731002 Escondido CA 8.30 060711004 Upland CA 8.30 060710005 Lake Gregory - Crestline CA 8.30 060659001 Lake Elsinore - W. Flint Street CA 8.30 060658001 Riverside - Rubidoux CA 8.30 060651003 Riverside - Magnolia CA 8.30 060590007 Anaheim CA 8.30 060376012 Santa Clarita CA 8.30 060374002 North Long Beach CA 8.30 060371201 Reseda CA 8.30 060371002 Burbank - W. Palm Ave CA 7.30 000060709 Sault Ste Marie ON 7.20 000060204 Windsor Downtown ON 6.60 060990006 Turlock - S. Minaret Street CA 6.60 060990005 Modesto - 14th Street CA 6.60 060731006 Alpine CA 6.60 060730003 El Cajon - Redwood Ave CA 6.60 060431001 Yosemite Village - Visitor Center CA 6.60 000065201 Parry Sound ON 6.60 000062001 North Bay ON 6.60 000060609 Sudbury ON 6.40 060890007 Anderson CA 6.40 060210002 Willows - E. Laurel Street CA 6.40 060074001 Gridley CA 6.40 060070002 Chico - Manzanita CA 6.10 051430005 SPRNGDLE AR 6.00 040139998 Vehicle Emissions Laboratory AZ 6.00 040139812 Durango AZ 6.00 040138005 Estrella AZ 6.00 040134010 Dysart AZ 6.00 040134003 South Phoenix AZ 6.00 040132001 Glendale Community College AZ 6.00 040130019 West Phoenix AZ 5.60 060650012 Banning - South Hathaway Street CA 5.20 061070009 Sequoia/Kings Canyon - Ash Mountain CA 5.20 060271018 Lone Pine Paiute/Shoshone Tribe-CA CA 5.20 000065701 Morrisburg ON 5.20 000063301 Dorset ON 5.20 000060303 Kingston ON 4.40 040191113 Geronimo AZ 4.40 040191032 Rose Elementary AZ 3.70 011011002 MONTG AL 3.50 051390006 El Dorado AR 3.50 051191008 ADEQ-DSR AR 3.50 051190007 PARR AR 3.50 000061201 Cornwall ON 3.50 000054501 L'Assomption QC 3.50 000054401 Saint-Anicet QC 3.50 000052301 Saint-Faustin QC 3.10 000060104 Ottawa ON 3.00 000090601 Fort Saskatchewan AB 3.00 000090130 Edmonton Central AB 3.00 000090121 Edmonton East AB 3.00 000090120 Edmonton South AB 2.90 060639901 Quincy BAM CA 2.60 000091901 Caroline AB 2.60 000090302 Red Deer AB 2.60 000090222 Calgary Northwest AB 2.50 000051501 Zéphirin QC 2.40 050350005 MARION AR 2.40 010970003 CHICK. AL 2.30 010735003 CORNER AL 2.30 010735002 PINSON AL 2.30 010732006 HOOVER AL 2.30 010732003 WYLAM AL 2.30 010731010 LEEDS AL 2.30 010730023 NO. BHAM AL 2.10 080770017 Grand Junction - Powell Building CO 2.10 010731009 PROVIDENCE AL 2.10 010731005 MCADORY AL 2.10 010331002 MSHOALS AL 2.10 000091101 Elk Island AB 2.10 000040302 MONCTON NB 2.10 000020301 WELLINGTON PE 2.10 000020104 CHARLOTTETOWN PE 1.90 000090502 Lethbridge AB 1.90 000040901 ST ANDREWS NB 1.90 000040801 CANTERBURY NB 1.70 080131001 Boulder - CU - 2102 Athens St. CO 1.70 080130003 Longmont CO 1.30 080310025 Denver Animal Shelter - 678 S. Jason St. CO 1.30 080310013 Denver - NJH - 14th Ave. & Albion St. CO 1.30 080310002 Denver - CAMP - 2105 Broadway CO 1.30 000040209 CASTLE ST. SAINT JO NB 1.30 000040203 FOREST HILLS NB 1.30 000040103 FREDERICTON NB 1.20 000094301 Cold Lake South AB 1.10 000041302 BATHURST NB 0.60 080410017 Colorado College CO AIRNow 18Z yesterday 1-hr surface PM2.5 AIRNow yesterday maximum 1-hr surface PM2.5 Yesterday observed cloudiness (MODIS COT)