AQSQID: 060798002

Site Name: Atascadero2

Location: Atascadero, CA

Reporting: True, Located: True

Current AQI: 14.0

Atascadero CA, US: 35.494556, -120.666203

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 23, 2019, 2 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 18.0 ppb (14) N/A 3.0 μg/m3 (3) 0.0 μg/m3 (0) 14.0
 
March 23, 2019, 1 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 18.0 ppb (14) N/A 4.0 μg/m3 (4) 3.0 μg/m3 (12) 14.0
 
March 23, 2019, noon 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 20.0 ppb (15) N/A 1.0 μg/m3 (1) 0.0 μg/m3 (0) 15.0
 
March 23, 2019, 11 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 18.0 ppb (14) N/A 2.0 μg/m3 (2) -3.0 μg/m3 (0) 14.0
 
March 23, 2019, 10 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 15.0 ppb (12) N/A 6.0 μg/m3 (5) -2.0 μg/m3 (0) 12.0
 
March 23, 2019, 9 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 16.0 ppb (12) N/A 5.0 μg/m3 (5) 0.0 μg/m3 (0) 12.0
 
March 23, 2019, 8 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 14.0 ppb (11) N/A 5.0 μg/m3 (5) 4.0 μg/m3 (17) 17.0
 
March 23, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) 4.0 μg/m3 (17) 17.0
 
March 23, 2019, 6 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 31.0 ppb (24) N/A 5.0 μg/m3 (5) 3.0 μg/m3 (12) 24.0
 
March 23, 2019, 5 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (24) N/A 14.0 μg/m3 (13) 3.0 μg/m3 (12) 24.0
 
March 23, 2019, 4 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 34.0 ppb (26) N/A 7.0 μg/m3 (6) 2.0 μg/m3 (8) 26.0
 
March 23, 2019, 3 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 35.0 ppb (27) N/A 7.0 μg/m3 (6) 1.0 μg/m3 (4) 27.0
 
March 23, 2019, 2 a.m. 0.0 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (29) N/A 11.0 μg/m3 (10) 4.0 μg/m3 (17) 29.0
 
March 23, 2019, 1 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (30) N/A 8.0 μg/m3 (7) 6.0 μg/m3 (25) 30.0
 
March 23, 2019, midnight 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 40.0 ppb (31) N/A 5.0 μg/m3 (5) 0.0 μg/m3 (0) 31.0
 
March 22, 2019, 11 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) N/A 5.0 μg/m3 (5) 0.0 μg/m3 (0) 32.0
 
March 22, 2019, 10 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) N/A 4.0 μg/m3 (4) 4.0 μg/m3 (17) 32.0
 
March 22, 2019, 9 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 44.0 ppb (34) N/A 3.0 μg/m3 (3) 5.0 μg/m3 (21) 34.0
 
March 22, 2019, 8 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (34) N/A 5.0 μg/m3 (5) 16.0 μg/m3 (59) 59.0
 
March 22, 2019, 7 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 37.0 ppb (28) N/A 6.0 μg/m3 (5) 6.0 μg/m3 (25) 28.0
 
March 22, 2019, 6 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (27) N/A 5.0 μg/m3 (5) 5.0 μg/m3 (21) 27.0
 
March 22, 2019, 5 p.m. 5.0 ppb (5) 2.0 ppb (2) N/A 3.0 ppb (3) N/A N/A 24.0 ppb (18) N/A 8.0 μg/m3 (7) 4.0 μg/m3 (17) 18.0
 
March 22, 2019, 4 p.m. 16.0 ppb (15) 10.0 ppb (9) N/A 6.0 ppb (6) N/A N/A 8.0 ppb (6) N/A 9.0 μg/m3 (8) 5.0 μg/m3 (21) 21.0
 
March 22, 2019, 3 p.m. 20.0 ppb (19) 15.0 ppb (14) N/A 5.0 ppb (5) N/A N/A 3.0 ppb (2) N/A 7.0 μg/m3 (6) 3.0 μg/m3 (12) 19.0
 
March 22, 2019, 2 p.m. 32.0 ppb (30) 27.0 ppb (25) N/A 5.0 ppb (5) N/A N/A 1.0 ppb (1) N/A 8.0 μg/m3 (7) 1.0 μg/m3 (4) 30.0
 
March 22, 2019, 1 p.m. 18.0 ppb (17) 14.0 ppb (13) N/A 4.0 ppb (4) N/A N/A 0.0 ppb (0) N/A 6.0 μg/m3 (5) 0.0 μg/m3 (0) 17.0
 
March 22, 2019, noon 9.0 ppb (8) 4.0 ppb (4) N/A 4.0 ppb (4) N/A N/A 1.0 ppb (1) N/A 3.0 μg/m3 (3) -4.0 μg/m3 (0) 8.0
 
March 22, 2019, 11 a.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 2.0 ppb (2) N/A 1.0 μg/m3 (1) -4.0 μg/m3 (0) 5.0
 
March 22, 2019, 10 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 3.0 ppb (2) N/A 0.0 μg/m3 (0) -4.0 μg/m3 (0) 3.0
 
March 22, 2019, 9 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 2.0 ppb (2) N/A 4.0 μg/m3 (4) N/A 4.0
 
March 22, 2019, 8 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 6.0 ppb (5) N/A 7.0 μg/m3 (6) N/A 6.0
 
March 22, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) -3.0 μg/m3 (0) 5.0
 
March 22, 2019, 6 a.m. 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 11.0 ppb (8) N/A 5.0 μg/m3 (5) 1.0 μg/m3 (4) 8.0
 
March 22, 2019, 5 a.m. 7.0 ppb (6) 0.0 ppb (0) N/A 7.0 ppb (6) N/A N/A 12.0 ppb (9) N/A 7.0 μg/m3 (6) 3.0 μg/m3 (12) 12.0
 
March 22, 2019, 4 a.m. 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 17.0 ppb (13) N/A 7.0 μg/m3 (6) 2.0 μg/m3 (8) 13.0
 
March 22, 2019, 3 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 29.0 ppb (22) N/A 4.0 μg/m3 (4) 2.0 μg/m3 (8) 22.0
 
March 22, 2019, 2 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (30) N/A 3.0 μg/m3 (3) 2.0 μg/m3 (8) 30.0
 
March 22, 2019, 1 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (34) N/A 3.0 μg/m3 (3) 1.0 μg/m3 (4) 34.0
 
March 22, 2019, midnight 0.0 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (35) N/A 5.0 μg/m3 (5) 2.0 μg/m3 (8) 35.0
 
March 21, 2019, 11 p.m. 6.0 ppb (6) 2.0 ppb (2) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (34) N/A 6.0 μg/m3 (5) 4.0 μg/m3 (17) 34.0
 
March 21, 2019, 10 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 44.0 ppb (34) N/A 3.0 μg/m3 (3) 0.0 μg/m3 (0) 34.0
 
March 21, 2019, 9 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 47.0 ppb (36) N/A 3.0 μg/m3 (3) 1.0 μg/m3 (4) 36.0
 
March 21, 2019, 8 p.m. 8.0 ppb (7) 4.0 ppb (4) N/A 3.0 ppb (3) N/A N/A 43.0 ppb (33) N/A 5.0 μg/m3 (5) 8.0 μg/m3 (33) 33.0
 
March 21, 2019, 7 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) N/A 6.0 μg/m3 (5) 10.0 μg/m3 (42) 42.0
 
March 21, 2019, 6 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 45.0 ppb (35) N/A 3.0 μg/m3 (3) 7.0 μg/m3 (29) 35.0
 
March 21, 2019, 5 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 40.0 ppb (31) N/A 0.0 μg/m3 (0) 5.0 μg/m3 (21) 31.0
 
March 21, 2019, 4 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 34.0 ppb (26) N/A 2.0 μg/m3 (2) 6.0 μg/m3 (25) 26.0
 
March 21, 2019, 3 p.m. 8.0 ppb (7) 2.0 ppb (2) N/A 5.0 ppb (5) N/A N/A 18.0 ppb (14) N/A 1.0 μg/m3 (1) 1.0 μg/m3 (4) 14.0
 
March 21, 2019, 2 p.m. 12.0 ppb (11) 2.0 ppb (2) N/A 10.0 ppb (9) N/A N/A 6.0 ppb (5) N/A 3.0 μg/m3 (3) 1.0 μg/m3 (4) 11.0
 
March 21, 2019, 1 p.m. 7.0 ppb (6) 0.0 ppb (0) N/A 7.0 ppb (6) N/A N/A 10.0 ppb (8) N/A 4.0 μg/m3 (4) 2.0 μg/m3 (8) 8.0
 
March 21, 2019, noon 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 12.0 ppb (9) N/A 2.0 μg/m3 (2) -1.0 μg/m3 (0) 9.0
 
March 21, 2019, 11 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 10.0 ppb (8) N/A 4.0 μg/m3 (4) N/A 8.0
 
March 21, 2019, 10 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 17.0 ppb (13) N/A 4.0 μg/m3 (4) -4.0 μg/m3 (0) 13.0
 
March 21, 2019, 9 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 14.0 ppb (11) N/A 5.0 μg/m3 (5) 0.0 μg/m3 (0) 11.0
 
March 21, 2019, 8 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 13.0 ppb (10) N/A 6.0 μg/m3 (5) 1.0 μg/m3 (4) 10.0
 
March 21, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) 2.0 μg/m3 (8) 8.0
 
March 21, 2019, 6 a.m. 6.0 ppb (6) 0.0 ppb (0) N/A 7.0 ppb (6) N/A N/A 16.0 ppb (12) N/A 6.0 μg/m3 (5) 3.0 μg/m3 (12) 12.0
 
March 21, 2019, 5 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 20.0 ppb (15) N/A 7.0 μg/m3 (6) 2.0 μg/m3 (8) 15.0
 
March 21, 2019, 4 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (24) N/A 8.0 μg/m3 (7) 0.0 μg/m3 (0) 24.0
 
March 21, 2019, 3 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (30) N/A 8.0 μg/m3 (7) 0.0 μg/m3 (0) 30.0
 
March 21, 2019, 2 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 47.0 ppb (36) N/A 9.0 μg/m3 (8) 4.0 μg/m3 (17) 36.0
 
March 21, 2019, 1 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (37) N/A 10.0 μg/m3 (9) 4.0 μg/m3 (17) 37.0
 
March 21, 2019, midnight 0.0 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 49.0 ppb (38) N/A 8.0 μg/m3 (7) 3.0 μg/m3 (12) 38.0
 
March 20, 2019, 11 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 49.0 ppb (38) N/A 7.0 μg/m3 (6) 4.0 μg/m3 (17) 38.0
 
March 20, 2019, 10 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 49.0 ppb (38) N/A 5.0 μg/m3 (5) 3.0 μg/m3 (12) 38.0
 
March 20, 2019, 9 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 50.0 ppb (38) N/A 2.0 μg/m3 (2) 2.0 μg/m3 (8) 38.0
 
March 20, 2019, 8 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 47.0 ppb (36) N/A -1.0 μg/m3 (0) 0.0 μg/m3 (0) 36.0
 
March 20, 2019, 7 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (34) N/A 0.0 μg/m3 (0) 0.0 μg/m3 (0) 34.0
 
March 20, 2019, 6 p.m. 5.0 ppb (5) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 45.0 ppb (35) N/A 1.0 μg/m3 (1) 3.0 μg/m3 (12) 35.0
 
March 20, 2019, 5 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 44.0 ppb (34) N/A 0.0 μg/m3 (0) 2.0 μg/m3 (8) 34.0
 
March 20, 2019, 4 p.m. 5.0 ppb (5) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 39.0 ppb (30) N/A 2.0 μg/m3 (2) 0.0 μg/m3 (0) 30.0
 
March 20, 2019, 3 p.m. 7.0 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 35.0 ppb (27) N/A 2.0 μg/m3 (2) 0.0 μg/m3 (0) 27.0
 
March 20, 2019, 2 p.m. 6.0 ppb (6) 0.0 ppb (0) N/A 7.0 ppb (6) N/A N/A 32.0 ppb (25) N/A 0.0 μg/m3 (0) 1.0 μg/m3 (4) 25.0
 
March 20, 2019, 1 p.m. 5.0 ppb (5) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 36.0 ppb (28) N/A 1.0 μg/m3 (1) 0.0 μg/m3 (0) 28.0
 
March 20, 2019, noon 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (28) N/A 1.0 μg/m3 (1) -1.0 μg/m3 (0) 28.0
 
March 20, 2019, 11 a.m. 0.0 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (35) N/A 5.0 μg/m3 (5) 2.0 μg/m3 (8) 35.0
 
March 20, 2019, 10 a.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 47.0 ppb (36) N/A 4.0 μg/m3 (4) 5.0 μg/m3 (21) 36.0
 
March 20, 2019, 9 a.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 49.0 ppb (38) N/A 4.0 μg/m3 (4) 3.0 μg/m3 (12) 38.0
 
March 20, 2019, 8 a.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 50.0 ppb (38) N/A 5.0 μg/m3 (5) 1.0 μg/m3 (4) 38.0
 
March 20, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) 3.0 μg/m3 (12) 12.0
 
March 20, 2019, 6 a.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 51.0 ppb (39) N/A 4.0 μg/m3 (4) 3.0 μg/m3 (12) 39.0
 
March 20, 2019, 5 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 46.0 ppb (35) N/A 3.0 μg/m3 (3) 2.0 μg/m3 (8) 35.0
 
March 20, 2019, 4 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 49.0 ppb (38) N/A 2.0 μg/m3 (2) 4.0 μg/m3 (17) 38.0
 
March 20, 2019, 3 a.m. 0.0 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 53.0 ppb (41) N/A 3.0 μg/m3 (3) 4.0 μg/m3 (17) 41.0
 
March 20, 2019, 2 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 52.0 ppb (40) N/A 17.0 μg/m3 (15) 4.0 μg/m3 (17) 40.0
 
March 20, 2019, 1 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 57.0 ppb (44) N/A 29.0 μg/m3 (26) 4.0 μg/m3 (17) 44.0
 
March 20, 2019, midnight 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 55.0 ppb (42) N/A 27.0 μg/m3 (25) 2.0 μg/m3 (8) 42.0
 
March 19, 2019, 11 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 58.0 ppb (45) N/A 22.0 μg/m3 (20) 2.0 μg/m3 (8) 45.0
 
March 19, 2019, 10 p.m. 6.0 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 54.0 ppb (42) N/A 22.0 μg/m3 (20) 1.0 μg/m3 (4) 42.0
 
March 19, 2019, 9 p.m. 5.0 ppb (5) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 56.0 ppb (43) N/A 23.0 μg/m3 (21) 4.0 μg/m3 (17) 43.0
 
March 19, 2019, 8 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 58.0 ppb (45) N/A 16.0 μg/m3 (15) 6.0 μg/m3 (25) 45.0
 
March 19, 2019, 7 p.m. 6.0 ppb (6) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 51.0 ppb (39) N/A 14.0 μg/m3 (13) 5.0 μg/m3 (21) 39.0
 
March 19, 2019, 6 p.m. 16.0 ppb (15) 5.0 ppb (5) N/A 10.0 ppb (9) N/A N/A 19.0 ppb (15) N/A 24.0 μg/m3 (22) 2.0 μg/m3 (8) 22.0
 
March 19, 2019, 5 p.m. 20.0 ppb (19) 8.0 ppb (7) N/A 11.0 ppb (10) N/A N/A 14.0 ppb (11) N/A 16.0 μg/m3 (15) 1.0 μg/m3 (4) 19.0
 
March 19, 2019, 4 p.m. 19.0 ppb (18) 8.0 ppb (7) N/A 10.0 ppb (9) N/A N/A 9.0 ppb (7) N/A 18.0 μg/m3 (16) 4.0 μg/m3 (17) 18.0
 
March 19, 2019, 3 p.m. 32.0 ppb (30) 17.0 ppb (16) N/A 14.0 ppb (13) N/A N/A 4.0 ppb (3) N/A 19.0 μg/m3 (17) 5.0 μg/m3 (21) 30.0
 
March 19, 2019, 2 p.m. 32.0 ppb (30) 15.0 ppb (14) N/A 17.0 ppb (16) N/A N/A 2.0 ppb (2) N/A 15.0 μg/m3 (14) 2.0 μg/m3 (8) 30.0
 
March 19, 2019, 1 p.m. 12.0 ppb (11) 1.0 ppb (1) N/A 10.0 ppb (9) N/A N/A 4.0 ppb (3) N/A 3.0 μg/m3 (3) 0.0 μg/m3 (0) 11.0
 
March 19, 2019, noon 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 6.0 ppb (5) N/A 3.0 μg/m3 (3) 0.0 μg/m3 (0) 6.0
 
March 19, 2019, 11 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 10.0 ppb (8) N/A 4.0 μg/m3 (4) 2.0 μg/m3 (8) 8.0
 
March 19, 2019, 10 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 12.0 ppb (9) N/A 6.0 μg/m3 (5) 3.0 μg/m3 (12) 12.0
 
March 19, 2019, 9 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 10.0 ppb (8) N/A 9.0 μg/m3 (8) 1.0 μg/m3 (4) 8.0
 
March 19, 2019, 8 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 14.0 ppb (11) N/A 9.0 μg/m3 (8) 5.0 μg/m3 (21) 21.0
 
March 19, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (7) 8.0 μg/m3 (33) 33.0
 
March 19, 2019, 6 a.m. 7.0 ppb (6) 0.0 ppb (0) N/A 7.0 ppb (6) N/A N/A 18.0 ppb (14) N/A 10.0 μg/m3 (9) 7.0 μg/m3 (29) 29.0
 
March 19, 2019, 5 a.m. 9.0 ppb (8) 0.0 ppb (0) N/A 9.0 ppb (8) N/A N/A 20.0 ppb (15) N/A 12.0 μg/m3 (11) 3.0 μg/m3 (12) 15.0
 
March 19, 2019, 4 a.m. 7.0 ppb (6) 0.0 ppb (0) N/A 7.0 ppb (6) N/A N/A 25.0 ppb (19) N/A 14.0 μg/m3 (13) 0.0 μg/m3 (0) 19.0
 
March 19, 2019, 3 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 34.0 ppb (26) N/A 10.0 μg/m3 (9) 0.0 μg/m3 (0) 26.0
 
March 19, 2019, 2 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 44.0 ppb (34) N/A 7.0 μg/m3 (6) 2.0 μg/m3 (8) 34.0
 
March 19, 2019, 1 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 53.0 ppb (41) N/A 5.0 μg/m3 (5) 4.0 μg/m3 (17) 41.0
 
March 19, 2019, midnight 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 55.0 ppb (42) N/A 7.0 μg/m3 (6) 3.0 μg/m3 (12) 42.0
 
March 18, 2019, 11 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 54.0 ppb (42) N/A 9.0 μg/m3 (8) 0.0 μg/m3 (0) 42.0
 
March 18, 2019, 10 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 55.0 ppb (42) N/A 7.0 μg/m3 (6) 2.0 μg/m3 (8) 42.0
 
March 18, 2019, 9 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 55.0 ppb (42) N/A 18.0 μg/m3 (16) 3.0 μg/m3 (12) 42.0
 
March 18, 2019, 8 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 54.0 ppb (42) N/A 11.0 μg/m3 (10) 6.0 μg/m3 (25) 42.0
 
March 18, 2019, 7 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 45.0 ppb (35) N/A 14.0 μg/m3 (13) 8.0 μg/m3 (33) 35.0
 
March 18, 2019, 6 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) N/A 17.0 μg/m3 (15) 6.0 μg/m3 (25) 28.0
 
March 18, 2019, 5 p.m. 7.0 ppb (6) 2.0 ppb (2) N/A 5.0 ppb (5) N/A N/A 25.0 ppb (19) N/A 21.0 μg/m3 (19) 6.0 μg/m3 (25) 25.0
 
March 18, 2019, 4 p.m. 16.0 ppb (15) 7.0 ppb (6) N/A 8.0 ppb (7) N/A N/A 17.0 ppb (13) N/A 28.0 μg/m3 (25) 9.0 μg/m3 (38) 38.0
 
March 18, 2019, 3 p.m. 48.0 ppb (44) 36.0 ppb (33) N/A 11.0 ppb (10) N/A N/A 3.0 ppb (2) N/A 100.0 μg/m3 (72) 8.0 μg/m3 (33) 72.0
 
March 18, 2019, 2 p.m. 35.0 ppb (32) 22.0 ppb (20) N/A 12.0 ppb (11) N/A N/A 1.0 ppb (1) N/A 11.0 μg/m3 (10) 2.0 μg/m3 (8) 32.0
 
March 18, 2019, 1 p.m. 13.0 ppb (12) 4.0 ppb (4) N/A 8.0 ppb (7) N/A N/A 2.0 ppb (2) N/A 6.0 μg/m3 (5) 1.0 μg/m3 (4) 12.0
 
March 18, 2019, noon 6.0 ppb (6) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 3.0 ppb (2) N/A 4.0 μg/m3 (4) 0.0 μg/m3 (0) 6.0
 
March 18, 2019, 11 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 6.0 ppb (5) N/A 4.0 μg/m3 (4) 0.0 μg/m3 (0) 5.0
 
March 18, 2019, 10 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 7.0 ppb (5) N/A 6.0 μg/m3 (5) 3.0 μg/m3 (12) 12.0
 
March 18, 2019, 9 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 9.0 ppb (7) N/A 9.0 μg/m3 (8) 3.0 μg/m3 (12) 12.0
 
March 18, 2019, 8 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 11.0 ppb (8) N/A 11.0 μg/m3 (10) 4.0 μg/m3 (17) 17.0
 
March 18, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (12) 6.0 μg/m3 (25) 25.0
 
March 18, 2019, 6 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 18.0 ppb (14) N/A 13.0 μg/m3 (12) 6.0 μg/m3 (25) 25.0
 
March 18, 2019, 5 a.m. 7.0 ppb (6) 0.0 ppb (0) N/A 7.0 ppb (6) N/A N/A 19.0 ppb (15) N/A 15.0 μg/m3 (14) 6.0 μg/m3 (25) 25.0
 
March 18, 2019, 4 a.m. 9.0 ppb (8) 0.0 ppb (0) N/A 10.0 ppb (9) N/A N/A 20.0 ppb (15) N/A 18.0 μg/m3 (16) 9.0 μg/m3 (38) 38.0
 
March 18, 2019, 3 a.m. 7.0 ppb (6) 0.0 ppb (0) N/A 7.0 ppb (6) N/A N/A 32.0 ppb (25) N/A 26.0 μg/m3 (24) 9.0 μg/m3 (38) 38.0
 
March 18, 2019, 2 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 39.0 ppb (30) N/A 13.0 μg/m3 (12) 5.0 μg/m3 (21) 30.0
 
March 18, 2019, 1 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 48.0 ppb (37) N/A 9.0 μg/m3 (8) 5.0 μg/m3 (21) 37.0
 
March 18, 2019, midnight 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 53.0 ppb (41) N/A 8.0 μg/m3 (7) 8.0 μg/m3 (33) 41.0
 
March 17, 2019, 11 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 53.0 ppb (41) N/A 11.0 μg/m3 (10) 7.0 μg/m3 (29) 41.0
 
March 17, 2019, 10 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 54.0 ppb (42) N/A 9.0 μg/m3 (8) 4.0 μg/m3 (17) 42.0
 
March 17, 2019, 9 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 53.0 ppb (41) N/A 9.0 μg/m3 (8) 6.0 μg/m3 (25) 41.0
 
March 17, 2019, 8 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 49.0 ppb (38) N/A 11.0 μg/m3 (10) 9.0 μg/m3 (38) 38.0
 
March 17, 2019, 7 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (34) N/A 19.0 μg/m3 (17) 11.0 μg/m3 (46) 46.0
 
March 17, 2019, 6 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (30) N/A 17.0 μg/m3 (15) 12.0 μg/m3 (50) 50.0
 
March 17, 2019, 5 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 35.0 ppb (27) N/A 16.0 μg/m3 (15) 24.0 μg/m3 (76) 76.0
 
March 17, 2019, 4 p.m. 8.0 ppb (7) 3.0 ppb (3) N/A 5.0 ppb (5) N/A N/A 16.0 ppb (12) N/A 13.0 μg/m3 (12) 7.0 μg/m3 (29) 29.0
 
March 17, 2019, 3 p.m. 16.0 ppb (15) 10.0 ppb (9) N/A 6.0 ppb (6) N/A N/A 4.0 ppb (3) N/A 10.0 μg/m3 (9) 0.0 μg/m3 (0) 15.0
 
March 17, 2019, 2 p.m. 12.0 ppb (11) 7.0 ppb (6) N/A 5.0 ppb (5) N/A N/A 1.0 ppb (1) N/A 6.0 μg/m3 (5) N/A 11.0
 
March 17, 2019, 1 p.m. 8.0 ppb (7) 2.0 ppb (2) N/A 6.0 ppb (6) N/A N/A 1.0 ppb (1) N/A 7.0 μg/m3 (6) -2.0 μg/m3 (0) 7.0
 
March 17, 2019, noon 6.0 ppb (6) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 2.0 ppb (2) N/A 7.0 μg/m3 (6) 2.0 μg/m3 (8) 8.0
 
March 17, 2019, 11 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 2.0 ppb (2) N/A 7.0 μg/m3 (6) 6.0 μg/m3 (25) 25.0
 
March 17, 2019, 10 a.m. 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 3.0 ppb (2) N/A 11.0 μg/m3 (10) 11.0 μg/m3 (46) 46.0
 
March 17, 2019, 9 a.m. 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 5.0 ppb (4) N/A 23.0 μg/m3 (21) 13.0 μg/m3 (52) 52.0
 
March 17, 2019, 8 a.m. 9.0 ppb (8) 0.0 ppb (0) N/A 9.0 ppb (8) N/A N/A 5.0 ppb (4) N/A 27.0 μg/m3 (25) 24.0 μg/m3 (76) 76.0
 
March 17, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 27.0 μg/m3 (25) 20.0 μg/m3 (67) 67.0
 
March 17, 2019, 6 a.m. 10.0 ppb (9) 0.0 ppb (0) N/A 10.0 ppb (9) N/A N/A 12.0 ppb (9) N/A 28.0 μg/m3 (25) 21.0 μg/m3 (69) 69.0
 
March 17, 2019, 5 a.m. 12.0 ppb (11) 0.0 ppb (0) N/A 12.0 ppb (11) N/A N/A 14.0 ppb (11) N/A 27.0 μg/m3 (25) 20.0 μg/m3 (67) 67.0
 
March 17, 2019, 4 a.m. 12.0 ppb (11) 0.0 ppb (0) N/A 12.0 ppb (11) N/A N/A 16.0 ppb (12) N/A 24.0 μg/m3 (22) 12.0 μg/m3 (50) 50.0
 
March 17, 2019, 3 a.m. 12.0 ppb (11) 0.0 ppb (0) N/A 12.0 ppb (11) N/A N/A 21.0 ppb (16) N/A 23.0 μg/m3 (21) 11.0 μg/m3 (46) 46.0
 
March 17, 2019, 2 a.m. 7.0 ppb (6) 0.0 ppb (0) N/A 7.0 ppb (6) N/A N/A 33.0 ppb (25) N/A 23.0 μg/m3 (21) 8.0 μg/m3 (33) 33.0
 
March 17, 2019, 1 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 50.0 ppb (38) N/A 19.0 μg/m3 (17) 2.0 μg/m3 (8) 38.0
 
March 17, 2019, midnight 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 55.0 ppb (42) N/A 6.0 μg/m3 (5) 1.0 μg/m3 (4) 42.0
 
March 16, 2019, 11 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 52.0 ppb (40) N/A 8.0 μg/m3 (7) 2.0 μg/m3 (8) 40.0
 
March 16, 2019, 10 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 52.0 ppb (40) N/A 11.0 μg/m3 (10) 2.0 μg/m3 (8) 40.0
 
March 16, 2019, 9 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 50.0 ppb (38) N/A 13.0 μg/m3 (12) 5.0 μg/m3 (21) 38.0
 
March 16, 2019, 8 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (35) N/A 12.0 μg/m3 (11) 11.0 μg/m3 (46) 46.0
 
March 16, 2019, 7 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) N/A 18.0 μg/m3 (16) 14.0 μg/m3 (54) 54.0
 
March 16, 2019, 6 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 34.0 ppb (26) N/A 12.0 μg/m3 (11) 23.0 μg/m3 (73) 73.0
 
March 16, 2019, 5 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 28.0 ppb (22) N/A 9.0 μg/m3 (8) 7.0 μg/m3 (29) 29.0
 
March 16, 2019, 4 p.m. 7.0 ppb (6) 2.0 ppb (2) N/A 4.0 ppb (4) N/A N/A 18.0 ppb (14) N/A 7.0 μg/m3 (6) 3.0 μg/m3 (12) 14.0
 
March 16, 2019, 3 p.m. 23.0 ppb (21) 14.0 ppb (13) N/A 8.0 ppb (7) N/A N/A 5.0 ppb (4) N/A 16.0 μg/m3 (15) 2.0 μg/m3 (8) 21.0