AQSQID: 040130019

Site Name: West Phoenix

Location: Phoenix (W Earll Dr), AZ

Reporting: True, Located: True

Current AQI: 27.0

Phoenix (W Earll Dr) AZ, US: 33.483799, -112.142601

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 21, 2019, 8 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 35.0 ppb (27) 0.2 ppb (2) 12.0 μg/m3 (11) 4.1 μg/m3 (17) 27.0
 
March 21, 2019, 7 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 32.0 ppb (25) 0.2 ppb (2) 10.0 μg/m3 (9) 2.3 μg/m3 (10) 25.0
 
March 21, 2019, 6 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 37.0 ppb (28) 0.2 ppb (2) 11.0 μg/m3 (10) 2.0 μg/m3 (8) 28.0
 
March 21, 2019, 5 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 38.0 ppb (29) 0.2 ppb (2) 10.0 μg/m3 (9) 2.4 μg/m3 (10) 29.0
 
March 21, 2019, 4 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 38.0 ppb (29) 0.2 ppb (2) 10.0 μg/m3 (9) 3.0 μg/m3 (12) 29.0
 
March 21, 2019, 3 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 39.0 ppb (30) 0.2 ppb (2) 12.0 μg/m3 (11) 3.2 μg/m3 (13) 30.0
 
March 21, 2019, 2 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 40.0 ppb (31) 0.2 ppb (2) 20.0 μg/m3 (18) 4.3 μg/m3 (18) 31.0
 
March 21, 2019, 1 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 41.0 ppb (32) 0.2 ppb (2) 20.0 μg/m3 (18) 2.8 μg/m3 (12) 32.0
 
March 21, 2019, midnight N/A N/A N/A 5.0 ppb (5) N/A N/A 39.0 ppb (30) 0.2 ppb (2) 16.0 μg/m3 (15) 2.0 μg/m3 (8) 30.0
 
March 20, 2019, 11 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 42.0 ppb (32) 0.1 ppb (1) 15.0 μg/m3 (14) 3.0 μg/m3 (12) 32.0
 
March 20, 2019, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 46.0 ppb (35) 0.1 ppb (1) 15.0 μg/m3 (14) 1.8 μg/m3 (8) 35.0
 
March 20, 2019, 9 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 48.0 ppb (37) 0.1 ppb (1) 13.0 μg/m3 (12) 2.4 μg/m3 (10) 37.0
 
March 20, 2019, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 50.0 ppb (38) 0.1 ppb (1) 14.0 μg/m3 (13) 4.4 μg/m3 (18) 38.0
 
March 20, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) 0.2 ppb (2) 16.0 μg/m3 (15) 5.1 μg/m3 (21) 36.0
 
March 20, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) 0.3 ppb (3) 20.0 μg/m3 (18) 5.3 μg/m3 (22) 28.0
 
March 20, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) 0.3 ppb (3) 21.0 μg/m3 (19) 6.9 μg/m3 (29) 29.0
 
March 20, 2019, 4 p.m. N/A N/A N/A 16.0 ppb (15) N/A N/A 26.0 ppb (20) N/A 19.0 μg/m3 (17) 5.4 μg/m3 (23) 23.0
 
March 20, 2019, 3 p.m. N/A N/A N/A 18.0 ppb (17) N/A N/A N/A N/A 23.0 μg/m3 (21) 6.6 μg/m3 (28) 28.0
 
March 20, 2019, 2 p.m. N/A N/A N/A 25.0 ppb (23) N/A N/A 12.0 ppb (9) 0.5 ppb (6) 24.0 μg/m3 (22) 8.1 μg/m3 (34) 34.0
 
March 20, 2019, 1 p.m. N/A N/A N/A 31.0 ppb (29) N/A N/A 6.0 ppb (5) 0.5 ppb (6) 16.0 μg/m3 (15) 5.4 μg/m3 (23) 29.0
 
March 20, 2019, noon N/A N/A N/A 16.0 ppb (15) N/A N/A 18.0 ppb (14) 0.4 ppb (4) 12.0 μg/m3 (11) 4.8 μg/m3 (20) 20.0
 
March 20, 2019, 11 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 28.0 ppb (22) 0.3 ppb (3) 13.0 μg/m3 (12) 5.1 μg/m3 (21) 22.0
 
March 20, 2019, 10 a.m. N/A N/A N/A 18.0 ppb (17) N/A N/A 18.0 ppb (14) 0.4 ppb (4) 22.0 μg/m3 (20) 9.1 μg/m3 (38) 38.0
 
March 20, 2019, 9 a.m. N/A N/A N/A 31.0 ppb (29) N/A N/A 2.0 ppb (2) 0.7 ppb (8) 24.0 μg/m3 (22) 9.6 μg/m3 (40) 40.0
 
March 20, 2019, 8 a.m. N/A N/A N/A 27.0 ppb (25) N/A N/A 7.0 ppb (5) 0.6 ppb (7) 27.0 μg/m3 (25) 10.7 μg/m3 (45) 45.0
 
March 20, 2019, 7 a.m. N/A N/A N/A 33.0 ppb (31) N/A N/A 3.0 ppb (2) 0.7 ppb (8) 32.0 μg/m3 (29) 11.6 μg/m3 (48) 48.0
 
March 20, 2019, 6 a.m. N/A N/A N/A 39.0 ppb (36) N/A N/A 4.0 ppb (3) 0.7 ppb (8) 42.0 μg/m3 (38) 12.2 μg/m3 (50) 50.0
 
March 20, 2019, 5 a.m. N/A N/A N/A 41.0 ppb (38) N/A N/A 1.0 ppb (1) 1.3 ppb (14) 43.0 μg/m3 (39) 12.7 μg/m3 (51) 51.0
 
March 20, 2019, 4 a.m. N/A N/A N/A 40.0 ppb (37) N/A N/A 1.0 ppb (1) 1.3 ppb (14) 57.0 μg/m3 (51) 15.7 μg/m3 (58) 58.0
 
March 20, 2019, 3 a.m. N/A N/A N/A 40.0 ppb (37) N/A N/A 2.0 ppb (2) 1.1 ppb (12) 41.0 μg/m3 (37) 11.3 μg/m3 (47) 47.0
 
March 20, 2019, 2 a.m. N/A N/A N/A 34.0 ppb (31) N/A N/A 11.0 ppb (8) 0.7 ppb (8) 21.0 μg/m3 (19) 4.6 μg/m3 (19) 31.0
 
March 20, 2019, 1 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 44.0 ppb (34) 0.4 ppb (4) 12.0 μg/m3 (11) 3.7 μg/m3 (15) 34.0
 
March 20, 2019, midnight N/A N/A N/A 2.0 ppb (2) N/A N/A 52.0 ppb (40) 0.3 ppb (3) 13.0 μg/m3 (12) 4.2 μg/m3 (18) 40.0
 
March 19, 2019, 11 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 54.0 ppb (42) 0.3 ppb (3) 9.0 μg/m3 (8) 2.4 μg/m3 (10) 42.0
 
March 19, 2019, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 55.0 ppb (42) 0.3 ppb (3) 13.0 μg/m3 (12) 5.7 μg/m3 (24) 42.0
 
March 19, 2019, 9 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 55.0 ppb (42) 0.3 ppb (3) N/A N/A 42.0
 
March 19, 2019, 8 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 52.0 ppb (40) 0.4 ppb (4) N/A N/A 40.0
 
March 19, 2019, 7 p.m. N/A N/A N/A 19.0 ppb (18) N/A N/A 46.0 ppb (35) 0.4 ppb (4) N/A N/A 35.0
 
March 19, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) 0.3 ppb (3) 14.0 μg/m3 (13) 4.0 μg/m3 (17) 32.0
 
March 19, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) 0.4 ppb (4) 19.0 μg/m3 (17) 5.2 μg/m3 (22) 22.0
 
March 19, 2019, 4 p.m. N/A N/A N/A 22.0 ppb (20) N/A N/A N/A N/A 37.0 μg/m3 (34) 9.9 μg/m3 (41) 41.0
 
March 19, 2019, 3 p.m. N/A N/A N/A 37.0 ppb (34) N/A N/A N/A N/A 53.0 μg/m3 (48) 12.2 μg/m3 (50) 50.0
 
March 19, 2019, 2 p.m. N/A N/A N/A 34.0 ppb (31) N/A N/A 2.0 ppb (2) 1.4 ppb (16) 62.0 μg/m3 (54) 14.6 μg/m3 (56) 56.0
 
March 19, 2019, 1 p.m. N/A N/A N/A 28.0 ppb (26) N/A N/A 1.0 ppb (1) 1.4 ppb (16) 43.0 μg/m3 (39) 9.1 μg/m3 (38) 39.0
 
March 19, 2019, noon N/A N/A N/A 24.0 ppb (22) N/A N/A 1.0 ppb (1) 1.1 ppb (12) 20.0 μg/m3 (18) 7.5 μg/m3 (31) 31.0
 
March 19, 2019, 11 a.m. N/A N/A N/A 20.0 ppb (19) N/A N/A 6.0 ppb (5) 0.5 ppb (6) 14.0 μg/m3 (13) 6.4 μg/m3 (27) 27.0
 
March 19, 2019, 10 a.m. N/A N/A N/A 13.0 ppb (12) N/A N/A 18.0 ppb (14) 0.4 ppb (4) 22.0 μg/m3 (20) 9.2 μg/m3 (38) 38.0
 
March 19, 2019, 9 a.m. N/A N/A N/A 29.0 ppb (27) N/A N/A 5.0 ppb (4) 0.7 ppb (8) 20.0 μg/m3 (18) 10.6 μg/m3 (44) 44.0
 
March 19, 2019, 8 a.m. N/A N/A N/A 30.0 ppb (28) N/A N/A 3.0 ppb (2) 0.7 ppb (8) 20.0 μg/m3 (18) 9.8 μg/m3 (41) 41.0
 
March 19, 2019, 7 a.m. N/A N/A N/A 32.0 ppb (30) N/A N/A 5.0 ppb (4) 0.8 ppb (9) 23.0 μg/m3 (21) 8.8 μg/m3 (37) 37.0
 
March 19, 2019, 6 a.m. N/A N/A N/A 35.0 ppb (32) N/A N/A 5.0 ppb (4) 0.9 ppb (10) 22.0 μg/m3 (20) 9.9 μg/m3 (41) 41.0
 
March 19, 2019, 5 a.m. N/A N/A N/A 31.0 ppb (29) N/A N/A 15.0 ppb (12) 0.7 ppb (8) 27.0 μg/m3 (25) 10.5 μg/m3 (44) 44.0
 
March 19, 2019, 4 a.m. N/A N/A N/A 40.0 ppb (37) N/A N/A 9.0 ppb (7) 0.8 ppb (9) 29.0 μg/m3 (26) 9.0 μg/m3 (38) 38.0
 
March 19, 2019, 3 a.m. N/A N/A N/A 41.0 ppb (38) N/A N/A 10.0 ppb (8) 0.8 ppb (9) 40.0 μg/m3 (36) 10.4 μg/m3 (43) 43.0
 
March 19, 2019, 2 a.m. N/A N/A N/A 33.0 ppb (31) N/A N/A 21.0 ppb (16) 0.8 ppb (9) 25.0 μg/m3 (23) 6.0 μg/m3 (25) 31.0
 
March 19, 2019, 1 a.m. N/A N/A N/A 11.0 ppb (10) N/A N/A 51.0 ppb (39) 0.4 ppb (4) 11.0 μg/m3 (10) 2.7 μg/m3 (11) 39.0
 
March 19, 2019, midnight N/A N/A N/A 5.0 ppb (5) N/A N/A 58.0 ppb (45) 0.3 ppb (3) 11.0 μg/m3 (10) 3.8 μg/m3 (16) 45.0
 
March 18, 2019, 11 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 61.0 ppb (47) 0.3 ppb (3) 13.0 μg/m3 (12) 4.4 μg/m3 (18) 47.0
 
March 18, 2019, 10 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 61.0 ppb (47) 0.3 ppb (3) 12.0 μg/m3 (11) 3.8 μg/m3 (16) 47.0
 
March 18, 2019, 9 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 57.0 ppb (44) 0.3 ppb (3) 12.0 μg/m3 (11) 4.4 μg/m3 (18) 44.0
 
March 18, 2019, 8 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 53.0 ppb (41) 0.3 ppb (3) 14.0 μg/m3 (13) 4.6 μg/m3 (19) 41.0
 
March 18, 2019, 7 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 51.0 ppb (39) 0.3 ppb (3) 12.0 μg/m3 (11) 4.5 μg/m3 (19) 39.0
 
March 18, 2019, 6 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 48.0 ppb (37) 0.3 ppb (3) 11.0 μg/m3 (10) 4.2 μg/m3 (18) 37.0
 
March 18, 2019, 5 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 42.0 ppb (32) 0.4 ppb (4) 19.0 μg/m3 (17) 5.8 μg/m3 (24) 32.0
 
March 18, 2019, 4 p.m. N/A N/A N/A 19.0 ppb (18) N/A N/A 25.0 ppb (19) 0.5 ppb (6) 33.0 μg/m3 (30) 10.0 μg/m3 (42) 42.0
 
March 18, 2019, 3 p.m. N/A N/A N/A 33.0 ppb (31) N/A N/A 8.0 ppb (6) 0.9 ppb (10) 51.0 μg/m3 (46) 14.8 μg/m3 (56) 56.0
 
March 18, 2019, 2 p.m. N/A N/A N/A 33.0 ppb (31) N/A N/A 2.0 ppb (2) 1.4 ppb (16) 53.0 μg/m3 (48) 12.2 μg/m3 (50) 50.0
 
March 18, 2019, 1 p.m. N/A N/A N/A 24.0 ppb (22) N/A N/A 1.0 ppb (1) 1.5 ppb (17) 39.0 μg/m3 (35) 10.0 μg/m3 (42) 42.0
 
March 18, 2019, noon N/A N/A N/A 20.0 ppb (19) N/A N/A 1.0 ppb (1) 1.0 ppb (11) 23.0 μg/m3 (21) 8.7 μg/m3 (36) 36.0
 
March 18, 2019, 11 a.m. N/A N/A N/A 21.0 ppb (19) N/A N/A 1.0 ppb (1) 0.7 ppb (8) 16.0 μg/m3 (15) 7.3 μg/m3 (30) 30.0
 
March 18, 2019, 10 a.m. N/A N/A N/A 19.0 ppb (18) N/A N/A 3.0 ppb (2) 0.6 ppb (7) 14.0 μg/m3 (13) 8.3 μg/m3 (35) 35.0
 
March 18, 2019, 9 a.m. N/A N/A N/A 17.0 ppb (16) N/A N/A 10.0 ppb (8) 0.5 ppb (6) 19.0 μg/m3 (17) 8.4 μg/m3 (35) 35.0
 
March 18, 2019, 8 a.m. N/A N/A N/A 29.0 ppb (27) N/A N/A 1.0 ppb (1) 0.8 ppb (9) 24.0 μg/m3 (22) 9.9 μg/m3 (41) 41.0
 
March 18, 2019, 7 a.m. N/A N/A N/A 29.0 ppb (27) N/A N/A 1.0 ppb (1) 0.8 ppb (9) 20.0 μg/m3 (18) 9.3 μg/m3 (39) 39.0
 
March 18, 2019, 6 a.m. N/A N/A N/A 31.0 ppb (29) N/A N/A 5.0 ppb (4) 0.8 ppb (9) 29.0 μg/m3 (26) 14.2 μg/m3 (55) 55.0
 
March 18, 2019, 5 a.m. N/A N/A N/A 37.0 ppb (34) N/A N/A 1.0 ppb (1) 1.3 ppb (14) 37.0 μg/m3 (34) 17.9 μg/m3 (63) 63.0
 
March 18, 2019, 4 a.m. N/A N/A N/A 37.0 ppb (34) N/A N/A 1.0 ppb (1) 1.5 ppb (17) 37.0 μg/m3 (34) 16.8 μg/m3 (60) 60.0
 
March 18, 2019, 3 a.m. N/A N/A N/A 37.0 ppb (34) N/A N/A 1.0 ppb (1) 1.3 ppb (14) 28.0 μg/m3 (25) 10.3 μg/m3 (43) 43.0
 
March 18, 2019, 2 a.m. N/A N/A N/A 23.0 ppb (21) N/A N/A 18.0 ppb (14) 0.7 ppb (8) 13.0 μg/m3 (12) 5.1 μg/m3 (21) 21.0
 
March 18, 2019, 1 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 47.0 ppb (36) 0.4 ppb (4) 7.0 μg/m3 (6) 3.8 μg/m3 (16) 36.0
 
March 18, 2019, midnight N/A N/A N/A 3.0 ppb (3) N/A N/A 52.0 ppb (40) 0.3 ppb (3) 6.0 μg/m3 (5) 3.2 μg/m3 (13) 40.0
 
March 17, 2019, 11 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 53.0 ppb (41) 0.3 ppb (3) 6.0 μg/m3 (5) 2.8 μg/m3 (12) 41.0
 
March 17, 2019, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 52.0 ppb (40) 0.3 ppb (3) 6.0 μg/m3 (5) 2.7 μg/m3 (11) 40.0
 
March 17, 2019, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 50.0 ppb (38) 0.3 ppb (3) 5.0 μg/m3 (5) 1.8 μg/m3 (8) 38.0
 
March 17, 2019, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 49.0 ppb (38) 0.3 ppb (3) 7.0 μg/m3 (6) 4.2 μg/m3 (18) 38.0
 
March 17, 2019, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 46.0 ppb (35) 0.3 ppb (3) 7.0 μg/m3 (6) 4.5 μg/m3 (19) 35.0
 
March 17, 2019, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 44.0 ppb (34) 0.3 ppb (3) 8.0 μg/m3 (7) 3.2 μg/m3 (13) 34.0
 
March 17, 2019, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 42.0 ppb (32) 0.3 ppb (3) 10.0 μg/m3 (9) 2.3 μg/m3 (10) 32.0
 
March 17, 2019, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 39.0 ppb (30) 0.3 ppb (3) 6.0 μg/m3 (5) 2.9 μg/m3 (12) 30.0
 
March 17, 2019, 3 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) 0.3 ppb (3) 7.0 μg/m3 (6) 3.5 μg/m3 (15) 28.0
 
March 17, 2019, 2 p.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 28.0 ppb (22) 0.4 ppb (4) 6.0 μg/m3 (5) 3.6 μg/m3 (15) 22.0
 
March 17, 2019, 1 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 33.0 ppb (25) 0.3 ppb (3) 4.0 μg/m3 (4) 2.3 μg/m3 (10) 25.0
 
March 17, 2019, noon N/A N/A N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) 0.3 ppb (3) 4.0 μg/m3 (4) 3.2 μg/m3 (13) 28.0
 
March 17, 2019, 11 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) 0.3 ppb (3) 4.0 μg/m3 (4) 2.9 μg/m3 (12) 28.0
 
March 17, 2019, 10 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 39.0 ppb (30) 0.3 ppb (3) 5.0 μg/m3 (5) 2.6 μg/m3 (11) 30.0
 
March 17, 2019, 9 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 37.0 ppb (28) 0.4 ppb (4) 6.0 μg/m3 (5) 2.4 μg/m3 (10) 28.0
 
March 17, 2019, 8 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 37.0 ppb (28) 0.3 ppb (3) 10.0 μg/m3 (9) 4.4 μg/m3 (18) 28.0
 
March 17, 2019, 7 a.m. N/A N/A N/A 17.0 ppb (16) N/A N/A 21.0 ppb (16) 0.5 ppb (6) 18.0 μg/m3 (16) 7.3 μg/m3 (30) 30.0
 
March 17, 2019, 6 a.m. N/A N/A N/A 23.0 ppb (21) N/A N/A 13.0 ppb (10) 0.6 ppb (7) 14.0 μg/m3 (13) 4.9 μg/m3 (20) 21.0
 
March 17, 2019, 5 a.m. N/A N/A N/A 11.0 ppb (10) N/A N/A 30.0 ppb (23) 0.4 ppb (4) 14.0 μg/m3 (13) 5.1 μg/m3 (21) 23.0
 
March 17, 2019, 4 a.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 29.0 ppb (22) 0.5 ppb (6) 16.0 μg/m3 (15) 6.5 μg/m3 (27) 27.0
 
March 17, 2019, 3 a.m. N/A N/A N/A 16.0 ppb (15) N/A N/A 25.0 ppb (19) 0.5 ppb (6) 13.0 μg/m3 (12) 4.9 μg/m3 (20) 20.0
 
March 17, 2019, 2 a.m. N/A N/A N/A 14.0 ppb (13) N/A N/A 31.0 ppb (24) 0.4 ppb (4) 16.0 μg/m3 (15) 4.1 μg/m3 (17) 24.0
 
March 17, 2019, 1 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 42.0 ppb (32) 0.3 ppb (3) 15.0 μg/m3 (14) 2.9 μg/m3 (12) 32.0
 
March 17, 2019, midnight N/A N/A N/A 3.0 ppb (3) N/A N/A 47.0 ppb (36) 0.3 ppb (3) 15.0 μg/m3 (14) 3.1 μg/m3 (13) 36.0
 
March 16, 2019, 11 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 48.0 ppb (37) 0.3 ppb (3) 15.0 μg/m3 (14) 3.2 μg/m3 (13) 37.0
 
March 16, 2019, 10 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 49.0 ppb (38) 0.3 ppb (3) 18.0 μg/m3 (16) 4.4 μg/m3 (18) 38.0
 
March 16, 2019, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 50.0 ppb (38) 0.3 ppb (3) 16.0 μg/m3 (15) 2.8 μg/m3 (12) 38.0
 
March 16, 2019, 8 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 49.0 ppb (38) 0.3 ppb (3) 18.0 μg/m3 (16) 2.9 μg/m3 (12) 38.0
 
March 16, 2019, 7 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 48.0 ppb (37) 0.3 ppb (3) 17.0 μg/m3 (15) 3.8 μg/m3 (16) 37.0
 
March 16, 2019, 6 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 46.0 ppb (35) 0.3 ppb (3) 20.0 μg/m3 (18) 4.1 μg/m3 (17) 35.0
 
March 16, 2019, 5 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 44.0 ppb (34) 0.3 ppb (3) 23.0 μg/m3 (21) 4.3 μg/m3 (18) 34.0
 
March 16, 2019, 4 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 42.0 ppb (32) 0.3 ppb (3) 23.0 μg/m3 (21) 4.5 μg/m3 (19) 32.0
 
March 16, 2019, 3 p.m. N/A N/A N/A 19.0 ppb (18) N/A N/A 26.0 ppb (20) 0.5 ppb (6) 49.0 μg/m3 (45) 13.4 μg/m3 (53) 53.0
 
March 16, 2019, 2 p.m. N/A N/A N/A 30.0 ppb (28) N/A N/A 4.0 ppb (3) 1.5 ppb (17) 35.0 μg/m3 (32) 9.3 μg/m3 (39) 39.0
 
March 16, 2019, 1 p.m. N/A N/A N/A 26.0 ppb (24) N/A N/A 3.0 ppb (2) 0.8 ppb (9) 27.0 μg/m3 (25) 6.4 μg/m3 (27) 27.0
 
March 16, 2019, noon N/A N/A N/A 14.0 ppb (13) N/A N/A 19.0 ppb (15) 0.5 ppb (6) 24.0 μg/m3 (22) 5.4 μg/m3 (23) 23.0
 
March 16, 2019, 11 a.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 26.0 ppb (20) 0.5 ppb (6) 22.0 μg/m3 (20) 5.3 μg/m3 (22) 22.0
 
March 16, 2019, 10 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 43.0 ppb (33) 0.3 ppb (3) 25.0 μg/m3 (23) 4.9 μg/m3 (20) 33.0
 
March 16, 2019, 9 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 42.0 ppb (32) 0.3 ppb (3) 28.0 μg/m3 (25) 5.7 μg/m3 (24) 32.0
 
March 16, 2019, 8 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 44.0 ppb (34) 0.3 ppb (3) 36.0 μg/m3 (33) 5.6 μg/m3 (23) 34.0
 
March 16, 2019, 7 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 45.0 ppb (35) 0.3 ppb (3) 41.0 μg/m3 (37) 7.6 μg/m3 (32) 37.0
 
March 16, 2019, 6 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 44.0 ppb (34) 0.3 ppb (3) 35.0 μg/m3 (32) 6.2 μg/m3 (26) 34.0
 
March 16, 2019, 5 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 42.0 ppb (32) 0.3 ppb (3) 31.0 μg/m3 (28) 6.5 μg/m3 (27) 32.0
 
March 16, 2019, 4 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 41.0 ppb (32) 0.4 ppb (4) 31.0 μg/m3 (28) 7.5 μg/m3 (31) 32.0
 
March 16, 2019, 3 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 40.0 ppb (31) 0.3 ppb (3) 32.0 μg/m3 (29) 5.6 μg/m3 (23) 31.0
 
March 16, 2019, 2 a.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 37.0 ppb (28) 0.4 ppb (4) 32.0 μg/m3 (29) 4.9 μg/m3 (20) 29.0
 
March 16, 2019, 1 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 41.0 ppb (32) 0.3 ppb (3) 22.0 μg/m3 (20) 3.6 μg/m3 (15) 32.0
 
March 16, 2019, midnight N/A N/A N/A 5.0 ppb (5) N/A N/A 47.0 ppb (36) 0.3 ppb (3) 15.0 μg/m3 (14) 3.1 μg/m3 (13) 36.0
 
March 15, 2019, 11 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 50.0 ppb (38) 0.3 ppb (3) 12.0 μg/m3 (11) 2.4 μg/m3 (10) 38.0
 
March 15, 2019, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 52.0 ppb (40) 0.3 ppb (3) 13.0 μg/m3 (12) 3.3 μg/m3 (14) 40.0
 
March 15, 2019, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 51.0 ppb (39) 0.3 ppb (3) 10.0 μg/m3 (9) 2.3 μg/m3 (10) 39.0
 
March 15, 2019, 8 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 49.0 ppb (38) 0.3 ppb (3) 6.0 μg/m3 (5) 1.6 μg/m3 (7) 38.0
 
March 15, 2019, 7 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 48.0 ppb (37) 0.3 ppb (3) 8.0 μg/m3 (7) 3.4 μg/m3 (14) 37.0
 
March 15, 2019, 6 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 47.0 ppb (36) 0.3 ppb (3) 10.0 μg/m3 (9) 3.5 μg/m3 (15) 36.0
 
March 15, 2019, 5 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 46.0 ppb (35) 0.3 ppb (3) 12.0 μg/m3 (11) 2.8 μg/m3 (12) 35.0
 
March 15, 2019, 4 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 38.0 ppb (29) 0.4 ppb (4) 11.0 μg/m3 (10) 4.7 μg/m3 (20) 29.0
 
March 15, 2019, 3 p.m. N/A N/A N/A 16.0 ppb (15) N/A N/A 27.0 ppb (21) 0.4 ppb (4) 17.0 μg/m3 (15) 6.5 μg/m3 (27) 27.0
 
March 15, 2019, 2 p.m. N/A N/A N/A 31.0 ppb (29) N/A N/A 9.0 ppb (7) 0.7 ppb (8) 36.0 μg/m3 (33) 12.5 μg/m3 (51) 51.0
 
March 15, 2019, 1 p.m. N/A N/A N/A 33.0 ppb (31) N/A N/A 1.0 ppb (1) 1.1 ppb (12) 46.0 μg/m3 (42) 9.5 μg/m3 (40) 42.0
 
March 15, 2019, noon N/A N/A N/A 26.0 ppb (24) N/A N/A 1.0 ppb (1) 1.2 ppb (13) 26.0 μg/m3 (24) 7.8 μg/m3 (32) 32.0
 
March 15, 2019, 11 a.m. N/A N/A N/A 27.0 ppb (25) N/A N/A 1.0 ppb (1) 0.8 ppb (9) 13.0 μg/m3 (12) 5.4 μg/m3 (23) 25.0
 
March 15, 2019, 10 a.m. N/A N/A N/A 27.0 ppb (25) N/A N/A 4.0 ppb (3) 0.5 ppb (6) 12.0 μg/m3 (11) 4.9 μg/m3 (20) 25.0
 
March 15, 2019, 9 a.m. N/A N/A N/A 14.0 ppb (13) N/A N/A 16.0 ppb (12) 0.5 ppb (6) 5.0 μg/m3 (5) 3.9 μg/m3 (16) 16.0
 
March 15, 2019, 8 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 25.0 ppb (19) 0.4 ppb (4) 7.0 μg/m3 (6) 4.0 μg/m3 (17) 19.0
 
March 15, 2019, 7 a.m. N/A N/A N/A 20.0 ppb (19) N/A N/A 19.0 ppb (15) 0.5 ppb (6) 23.0 μg/m3 (21) 10.2 μg/m3 (42) 42.0
 
March 15, 2019, 6 a.m. N/A N/A N/A 30.0 ppb (28) N/A N/A 9.0 ppb (7) 0.6 ppb (7) 19.0 μg/m3 (17) 8.1 μg/m3 (34) 34.0
 
March 15, 2019, 5 a.m. N/A N/A N/A 34.0 ppb (31) N/A N/A 7.0 ppb (5) 0.7 ppb (8) 22.0 μg/m3 (20) 10.8 μg/m3 (45) 45.0
 
March 15, 2019, 4 a.m. N/A N/A N/A 36.0 ppb (33) N/A N/A 7.0 ppb (5) 0.8 ppb (9) 25.0 μg/m3 (23) 11.2 μg/m3 (47) 47.0
 
March 15, 2019, 3 a.m. N/A N/A N/A 36.0 ppb (33) N/A N/A 10.0 ppb (8) 0.6 ppb (7) 21.0 μg/m3 (19) 8.3 μg/m3 (35) 35.0
 
March 15, 2019, 2 a.m. N/A N/A N/A 28.0 ppb (26) N/A N/A 21.0 ppb (16) 0.6 ppb (7) 11.0 μg/m3 (10) 4.8 μg/m3 (20) 26.0
 
March 15, 2019, 1 a.m. N/A N/A N/A 11.0 ppb (10) N/A N/A 40.0 ppb (31) 0.4 ppb (4) 5.0 μg/m3 (5) 2.1 μg/m3 (9) 31.0
 
March 15, 2019, midnight N/A N/A N/A 5.0 ppb (5) N/A N/A 48.0 ppb (37) 0.3 ppb (3) 3.0 μg/m3 (3) 1.4 μg/m3 (6) 37.0
 
March 14, 2019, 11 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 50.0 ppb (38) 0.3 ppb (3) 6.0 μg/m3 (5) 3.7 μg/m3 (15) 38.0
 
March 14, 2019, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 50.0 ppb (38) 0.3 ppb (3) 4.0 μg/m3 (4) 2.6 μg/m3 (11) 38.0
 
March 14, 2019, 9 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 49.0 ppb (38) 0.3 ppb (3) 3.0 μg/m3 (3) 1.8 μg/m3 (8) 38.0
 
March 14, 2019, 8 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 49.0 ppb (38) 0.3 ppb (3) 5.0 μg/m3 (5) 2.5 μg/m3 (10) 38.0
 
March 14, 2019, 7 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 45.0 ppb (35) 0.3 ppb (3) 3.0 μg/m3 (3) 0.8 μg/m3 (3) 35.0
 
March 14, 2019, 6 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 42.0 ppb (32) 0.3 ppb (3) 3.0 μg/m3 (3) 1.4 μg/m3 (6) 32.0
 
March 14, 2019, 5 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 39.0 ppb (30) 0.3 ppb (3) 4.0 μg/m3 (4) 1.5 μg/m3 (6) 30.0
 
March 14, 2019, 4 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 34.0 ppb (26) 0.4 ppb (4) 12.0 μg/m3 (11) 4.9 μg/m3 (20) 26.0
 
March 14, 2019, 3 p.m. N/A N/A N/A 15.0 ppb (14) N/A N/A 22.0 ppb (17) 0.5 ppb (6) 20.0 μg/m3 (18) 6.2 μg/m3 (26) 26.0
 
March 14, 2019, 2 p.m. N/A N/A N/A 24.0 ppb (22) N/A N/A 6.0 ppb (5) 0.8 ppb (9) 17.0 μg/m3 (15) 2.3 μg/m3 (10) 22.0
 
March 14, 2019, 1 p.m. N/A N/A N/A 26.0 ppb (24) N/A N/A 4.0 ppb (3) 0.7 ppb (8) 16.0 μg/m3 (15) 2.8 μg/m3 (12) 24.0
 
March 14, 2019, noon N/A N/A N/A 23.0 ppb (21) N/A N/A 5.0 ppb (4) 0.7 ppb (8) 11.0 μg/m3 (10) 2.3 μg/m3 (10) 21.0
 
March 14, 2019, 11 a.m. N/A N/A N/A 14.0 ppb (13) N/A N/A 12.0 ppb (9) 0.5 ppb (6) 8.0 μg/m3 (7) 2.0 μg/m3 (8) 13.0
 
March 14, 2019, 10 a.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 20.0 ppb (15) 0.4 ppb (4) 11.0 μg/m3 (10) 4.9 μg/m3 (20) 20.0
 
March 14, 2019, 9 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 24.0 ppb (18) 0.4 ppb (4) 7.0 μg/m3 (6) 2.4 μg/m3 (10) 18.0