AQSQID: 240190004

Site Name: Horn Point

Location: Cambridge (Horns Point Rd), MD

Reporting: True, Located: True

Current AQI: 29.0

Cambridge (Horns Point Rd) MD, US: 38.5876, -76.1408

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 29, 2020, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 38.0 ppb (29) N/A N/A 4.0 μg/m3 (17) 29.0
 
March 29, 2020, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 38.0 ppb (29) N/A N/A 4.0 μg/m3 (17) 29.0
 
March 28, 2020, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 38.0 ppb (29) N/A N/A 6.0 μg/m3 (25) 29.0
 
March 28, 2020, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 6.0 μg/m3 (25) 30.0
 
March 28, 2020, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 6.0 μg/m3 (25) 30.0
 
March 28, 2020, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A 6.0 μg/m3 (25) 32.0
 
March 28, 2020, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A 5.0 μg/m3 (21) 32.0
 
March 28, 2020, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A 6.0 μg/m3 (25) 34.0
 
March 28, 2020, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 4.0 μg/m3 (17) 35.0
 
March 28, 2020, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 3.0 μg/m3 (12) 35.0
 
March 28, 2020, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A 3.0 μg/m3 (12) 34.0
 
March 28, 2020, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A 5.0 μg/m3 (21) 34.0
 
March 28, 2020, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 6.0 μg/m3 (25) 32.0
 
March 28, 2020, noon N/A N/A N/A N/A N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 4.0 μg/m3 (17) 27.0
 
March 28, 2020, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 6.0 μg/m3 (25) 28.0
 
March 28, 2020, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 36.0 ppb (28) N/A N/A 8.0 μg/m3 (33) 33.0
 
March 28, 2020, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 10.0 μg/m3 (42) 42.0
 
March 28, 2020, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 32.0 ppb (25) N/A N/A 6.0 μg/m3 (25) 25.0
 
March 28, 2020, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 6.0 μg/m3 (25) 25.0
 
March 28, 2020, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 27.0 ppb (21) N/A N/A 5.0 μg/m3 (21) 21.0
 
March 28, 2020, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 23.0 ppb (18) N/A N/A 5.0 μg/m3 (21) 21.0
 
March 28, 2020, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 17.0 ppb (13) N/A N/A 7.0 μg/m3 (29) 29.0
 
March 28, 2020, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 14.0 ppb (11) N/A N/A 9.0 μg/m3 (38) 38.0
 
March 28, 2020, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 17.0 ppb (13) N/A N/A 5.0 μg/m3 (21) 21.0
 
March 28, 2020, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 17.0 ppb (13) N/A N/A 5.0 μg/m3 (21) 21.0
 
March 28, 2020, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 24.0 ppb (18) N/A N/A 5.0 μg/m3 (21) 21.0
 
March 27, 2020, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 26.0 ppb (20) N/A N/A 5.0 μg/m3 (21) 21.0
 
March 27, 2020, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 6.0 μg/m3 (25) 28.0
 
March 27, 2020, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 4.0 μg/m3 (17) 32.0
 
March 27, 2020, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 47.0 ppb (36) N/A N/A 7.0 μg/m3 (29) 36.0
 
March 27, 2020, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A 3.0 μg/m3 (12) 38.0
 
March 27, 2020, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A 3.0 μg/m3 (12) 38.0
 
March 27, 2020, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 43.0 ppb (33) N/A N/A 1.0 μg/m3 (4) 33.0
 
March 27, 2020, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 36.0 ppb (28) N/A N/A 2.0 μg/m3 (8) 28.0
 
March 27, 2020, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 5.0 μg/m3 (21) 25.0
 
March 27, 2020, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 32.0 ppb (25) N/A N/A 5.0 μg/m3 (21) 25.0
 
March 27, 2020, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 0.0 μg/m3 (0) 24.0
 
March 27, 2020, noon N/A N/A N/A N/A N/A 0.0 ppb (0) 22.0 ppb (17) N/A N/A 4.0 μg/m3 (17) 17.0
 
March 27, 2020, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 16.0 ppb (12) N/A N/A 6.0 μg/m3 (25) 25.0
 
March 27, 2020, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 17.0 ppb (13) N/A N/A 4.0 μg/m3 (17) 17.0
 
March 27, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A 6.0 μg/m3 (25) 25.0
 
March 27, 2020, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 7.0 μg/m3 (29) 29.0
 
March 27, 2020, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 32.0 ppb (25) N/A N/A 8.0 μg/m3 (33) 33.0
 
March 27, 2020, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 5.0 μg/m3 (21) 27.0
 
March 27, 2020, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 38.0 ppb (29) N/A N/A 7.0 μg/m3 (29) 29.0
 
March 27, 2020, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 9.0 μg/m3 (38) 38.0
 
March 27, 2020, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 5.0 μg/m3 (21) 32.0
 
March 27, 2020, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 4.0 μg/m3 (17) 27.0
 
March 27, 2020, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 38.0 ppb (29) N/A N/A 4.0 μg/m3 (17) 29.0
 
March 27, 2020, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A 6.0 μg/m3 (25) 32.0
 
March 26, 2020, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 8.0 μg/m3 (33) 33.0
 
March 26, 2020, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A 4.0 μg/m3 (17) 32.0
 
March 26, 2020, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 5.0 μg/m3 (21) 35.0
 
March 26, 2020, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 5.0 μg/m3 (21) 35.0
 
March 26, 2020, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 48.0 ppb (37) N/A N/A 2.0 μg/m3 (8) 37.0
 
March 26, 2020, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 47.0 ppb (36) N/A N/A 3.0 μg/m3 (12) 36.0
 
March 26, 2020, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 3.0 μg/m3 (12) 35.0
 
March 26, 2020, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A 3.0 μg/m3 (12) 32.0
 
March 26, 2020, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 4.0 μg/m3 (17) 28.0
 
March 26, 2020, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 6.0 μg/m3 (25) 27.0
 
March 26, 2020, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 5.0 μg/m3 (21) 23.0
 
March 26, 2020, noon N/A N/A N/A N/A N/A 0.0 ppb (0) 16.0 ppb (12) N/A N/A 3.0 μg/m3 (12) 12.0
 
March 26, 2020, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 9.0 ppb (7) N/A N/A 4.0 μg/m3 (17) 17.0
 
March 26, 2020, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 16.0 ppb (12) N/A N/A 3.0 μg/m3 (12) 12.0
 
March 26, 2020, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 17.0 ppb (13) N/A N/A 5.0 μg/m3 (21) 21.0
 
March 26, 2020, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 19.0 ppb (15) N/A N/A 6.0 μg/m3 (25) 25.0
 
March 26, 2020, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 5.0 μg/m3 (21) 23.0
 
March 26, 2020, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 5.0 μg/m3 (21) 24.0
 
March 26, 2020, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 5.0 μg/m3 (21) 23.0
 
March 26, 2020, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 4.0 μg/m3 (17) 23.0
 
March 26, 2020, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 3.0 μg/m3 (12) 28.0
 
March 26, 2020, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 36.0 ppb (28) N/A N/A 3.0 μg/m3 (12) 28.0
 
March 26, 2020, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 38.0 ppb (29) N/A N/A 4.0 μg/m3 (17) 29.0
 
March 26, 2020, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 5.0 μg/m3 (21) 28.0
 
March 25, 2020, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 3.0 μg/m3 (12) 28.0
 
March 25, 2020, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 38.0 ppb (29) N/A N/A 6.0 μg/m3 (25) 29.0
 
March 25, 2020, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 40.0 ppb (31) N/A N/A 3.0 μg/m3 (12) 31.0
 
March 25, 2020, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A -1.0 μg/m3 (0) 32.0
 
March 25, 2020, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 1.0 μg/m3 (4) 4.0
 
March 25, 2020, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 1.0 μg/m3 (4) 4.0
 
March 25, 2020, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A -1.0 μg/m3 (0) N/A
March 25, 2020, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 1.0 μg/m3 (4) 32.0
 
March 25, 2020, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 4.0 μg/m3 (17) 32.0
 
March 25, 2020, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
March 25, 2020, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 3.0 μg/m3 (12) 32.0
 
March 25, 2020, noon N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 3.0 μg/m3 (12) 32.0
 
March 25, 2020, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 40.0 ppb (31) N/A N/A 1.0 μg/m3 (4) 31.0
 
March 25, 2020, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 0.0 μg/m3 (0) 30.0
 
March 25, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 1.0 μg/m3 (4) 28.0
 
March 25, 2020, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 36.0 ppb (28) N/A N/A 3.0 μg/m3 (12) 28.0
 
March 25, 2020, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 3.0 μg/m3 (12) 27.0
 
March 25, 2020, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 5.0 μg/m3 (21) 25.0
 
March 25, 2020, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 6.0 μg/m3 (25) 25.0
 
March 25, 2020, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 3.0 μg/m3 (12) 22.0
 
March 25, 2020, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 27.0 ppb (21) N/A N/A 5.0 μg/m3 (21) 21.0
 
March 25, 2020, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 25.0 ppb (19) N/A N/A 5.0 μg/m3 (21) 21.0
 
March 25, 2020, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 23.0 ppb (18) N/A N/A 3.0 μg/m3 (12) 18.0
 
March 25, 2020, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 24.0 ppb (18) N/A N/A 2.0 μg/m3 (8) 18.0
 
March 24, 2020, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 25.0 ppb (19) N/A N/A -1.0 μg/m3 (0) 19.0
 
March 24, 2020, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 31.0 ppb (24) N/A N/A 3.0 μg/m3 (12) 24.0
 
March 24, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 7.0 μg/m3 (29) 30.0
 
March 24, 2020, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 40.0 ppb (31) N/A N/A 1.0 μg/m3 (4) 31.0
 
March 24, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 1.0 μg/m3 (4) 30.0
 
March 24, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 1.0 μg/m3 (4) 28.0
 
March 24, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 0.0 μg/m3 (0) 28.0
 
March 24, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A -1.0 μg/m3 (0) 26.0
 
March 24, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A -2.0 μg/m3 (0) 28.0
 
March 24, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 0.0 μg/m3 (0) 27.0
 
March 24, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A 1.0 μg/m3 (4) 22.0
 
March 24, 2020, noon N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 3.0 μg/m3 (12) 18.0
 
March 24, 2020, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 23.0 ppb (18) N/A N/A 4.0 μg/m3 (17) 18.0
 
March 24, 2020, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 16.0 ppb (12) N/A N/A 2.0 μg/m3 (8) 12.0
 
March 24, 2020, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 13.0 ppb (10) N/A N/A 3.0 μg/m3 (12) 12.0
 
March 24, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A N/A 3.0 μg/m3 (12) 15.0
 
March 24, 2020, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 16.0 ppb (12) N/A N/A 3.0 μg/m3 (12) 12.0
 
March 24, 2020, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 23.0 ppb (18) N/A N/A 4.0 μg/m3 (17) 18.0
 
March 24, 2020, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 25.0 ppb (19) N/A N/A 4.0 μg/m3 (17) 19.0
 
March 24, 2020, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 2.0 μg/m3 (8) 22.0
 
March 24, 2020, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A -1.0 μg/m3 (0) 23.0
 
March 24, 2020, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 1.0 μg/m3 (4) 24.0
 
March 24, 2020, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 3.0 μg/m3 (12) 24.0
 
March 24, 2020, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A -1.0 μg/m3 (0) 24.0
 
March 23, 2020, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 1.0 μg/m3 (4) 23.0
 
March 23, 2020, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 3.0 μg/m3 (12) 24.0
 
March 23, 2020, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 36.0 ppb (28) N/A N/A 1.0 μg/m3 (4) 28.0
 
March 23, 2020, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 38.0 ppb (29) N/A N/A 0.0 μg/m3 (0) 29.0
 
March 23, 2020, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 0.0 μg/m3 (0) 28.0
 
March 23, 2020, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 38.0 ppb (29) N/A N/A 0.0 μg/m3 (0) 29.0
 
March 23, 2020, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 38.0 ppb (29) N/A N/A 0.0 μg/m3 (0) 29.0
 
March 23, 2020, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 1.0 μg/m3 (4) 30.0
 
March 23, 2020, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 40.0 ppb (31) N/A N/A 2.0 μg/m3 (8) 31.0
 
March 23, 2020, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 40.0 ppb (31) N/A N/A N/A 31.0
 
March 23, 2020, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 1.0 μg/m3 (4) 32.0
 
March 23, 2020, noon N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A 3.0 μg/m3 (12) 32.0
 
March 23, 2020, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 5.0 μg/m3 (21) 32.0
 
March 23, 2020, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 5.0 μg/m3 (21) 32.0
 
March 23, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 8.0 μg/m3 (33) 33.0
 
March 23, 2020, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 4.0 μg/m3 (17) 30.0
 
March 23, 2020, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 40.0 ppb (31) N/A N/A 4.0 μg/m3 (17) 31.0
 
March 23, 2020, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 8.0 μg/m3 (33) 33.0
 
March 23, 2020, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A 9.0 μg/m3 (38) 38.0
 
March 23, 2020, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A 6.0 μg/m3 (25) 32.0
 
March 23, 2020, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 8.0 μg/m3 (33) 33.0
 
March 23, 2020, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 10.0 μg/m3 (42) 42.0
 
March 23, 2020, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A 7.0 μg/m3 (29) 32.0
 
March 23, 2020, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 43.0 ppb (33) N/A N/A 7.0 μg/m3 (29) 33.0
 
March 22, 2020, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 43.0 ppb (33) N/A N/A 8.0 μg/m3 (33) 33.0
 
March 22, 2020, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 43.0 ppb (33) N/A N/A 8.0 μg/m3 (33) 33.0
 
March 22, 2020, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A 7.0 μg/m3 (29) 34.0
 
March 22, 2020, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 4.0 μg/m3 (17) 35.0
 
March 22, 2020, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A 5.0 μg/m3 (21) 34.0
 
March 22, 2020, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A 8.0 μg/m3 (33) 34.0
 
March 22, 2020, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 43.0 ppb (33) N/A N/A 4.0 μg/m3 (17) 33.0
 
March 22, 2020, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 5.0 μg/m3 (21) 32.0
 
March 22, 2020, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 38.0 ppb (29) N/A N/A 6.0 μg/m3 (25) 29.0
 
March 22, 2020, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 4.0 μg/m3 (17) 25.0
 
March 22, 2020, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 32.0 ppb (25) N/A N/A 3.0 μg/m3 (12) 25.0
 
March 22, 2020, noon N/A N/A N/A N/A N/A 0.0 ppb (0) 32.0 ppb (25) N/A N/A 5.0 μg/m3 (21) 25.0
 
March 22, 2020, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 6.0 μg/m3 (25) 25.0
 
March 22, 2020, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 7.0 μg/m3 (29) 29.0
 
March 22, 2020, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 36.0 ppb (28) N/A N/A 5.0 μg/m3 (21) 28.0
 
March 22, 2020, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 36.0 ppb (28) N/A N/A 7.0 μg/m3 (29) 29.0
 
March 22, 2020, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 8.0 μg/m3 (33) 33.0
 
March 22, 2020, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 6.0 μg/m3 (25) 28.0
 
March 22, 2020, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 8.0 μg/m3 (33) 33.0
 
March 22, 2020, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 38.0 ppb (29) N/A N/A 6.0 μg/m3 (25) 29.0
 
March 22, 2020, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 4.0 μg/m3 (17) 30.0
 
March 22, 2020, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 40.0 ppb (31) N/A N/A 6.0 μg/m3 (25) 31.0