AQSQID: 330150014

Site Name: Portsmouth

Location: Portsmouth (Downtown), NH

Reporting: True, Located: True

Current AQI: 30.0

Portsmouth (Downtown) NH, US: 43.075371, -70.748017

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
April 4, 2020, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (30) N/A 9.0 μg/m3 (8) 4.4 μg/m3 (18) 30.0
 
April 4, 2020, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (30) N/A 7.0 μg/m3 (6) 3.4 μg/m3 (14) 30.0
 
April 3, 2020, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (30) N/A 6.0 μg/m3 (5) 3.1 μg/m3 (13) 30.0
 
April 3, 2020, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (30) N/A 3.0 μg/m3 (3) 1.5 μg/m3 (6) 30.0
 
April 3, 2020, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (30) N/A 2.0 μg/m3 (2) 1.0 μg/m3 (4) 30.0
 
April 3, 2020, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 40.0 ppb (31) N/A 3.0 μg/m3 (3) 1.8 μg/m3 (8) 31.0
 
April 3, 2020, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 40.0 ppb (31) N/A 4.0 μg/m3 (4) 1.9 μg/m3 (8) 31.0
 
April 3, 2020, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 4.0 μg/m3 (4) 2.2 μg/m3 (9) 9.0
 
April 3, 2020, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 3.0 μg/m3 (3) 1.5 μg/m3 (6) 6.0
 
April 3, 2020, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 2.0 μg/m3 (2) 1.2 μg/m3 (5) 5.0
 
April 3, 2020, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 2.0 μg/m3 (2) 1.0 μg/m3 (4) 4.0
 
April 3, 2020, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (30) N/A 1.0 μg/m3 (1) 0.6 μg/m3 (2) 30.0
 
April 3, 2020, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (30) N/A 2.0 μg/m3 (2) 0.7 μg/m3 (3) 30.0
 
April 3, 2020, noon N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (30) N/A 1.0 μg/m3 (1) 0.6 μg/m3 (2) 30.0
 
April 3, 2020, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (30) N/A 2.0 μg/m3 (2) 0.9 μg/m3 (4) 30.0
 
April 3, 2020, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (30) N/A 4.0 μg/m3 (4) 1.2 μg/m3 (5) 30.0
 
April 3, 2020, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (30) N/A 2.0 μg/m3 (2) 0.7 μg/m3 (3) 30.0
 
April 3, 2020, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (30) N/A 0.0 μg/m3 (0) 0.4 μg/m3 (2) 30.0
 
April 3, 2020, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 38.0 ppb (29) N/A 1.0 μg/m3 (1) 0.6 μg/m3 (2) 29.0
 
April 3, 2020, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 38.0 ppb (29) N/A 1.0 μg/m3 (1) 0.6 μg/m3 (2) 29.0
 
April 3, 2020, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 38.0 ppb (29) N/A 2.0 μg/m3 (2) 1.1 μg/m3 (5) 29.0
 
April 3, 2020, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 36.0 ppb (28) N/A 5.0 μg/m3 (5) 2.1 μg/m3 (9) 28.0
 
April 3, 2020, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 30.0 ppb (23) N/A 8.0 μg/m3 (7) 2.3 μg/m3 (10) 23.0
 
April 3, 2020, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 28.0 ppb (22) N/A 58.0 μg/m3 (52) 8.7 μg/m3 (36) 52.0
 
April 3, 2020, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 27.0 ppb (21) N/A 32.0 μg/m3 (29) 6.1 μg/m3 (25) 29.0
 
April 3, 2020, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) 27.0 ppb (21) N/A 54.0 μg/m3 (49) 8.7 μg/m3 (36) 49.0
 
April 2, 2020, 11 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 27.0 ppb (21) N/A 57.0 μg/m3 (51) 8.9 μg/m3 (37) 51.0
 
April 2, 2020, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 28.0 ppb (22) N/A 65.0 μg/m3 (55) 10.2 μg/m3 (42) 55.0
 
April 2, 2020, 9 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 29.0 ppb (22) N/A 66.0 μg/m3 (56) 11.2 μg/m3 (47) 56.0
 
April 2, 2020, 8 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 30.0 ppb (23) N/A 69.0 μg/m3 (57) 10.8 μg/m3 (45) 57.0
 
April 2, 2020, 7 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 29.0 ppb (22) N/A 19.0 μg/m3 (17) 3.9 μg/m3 (16) 22.0
 
April 2, 2020, 6 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 31.0 ppb (24) N/A 5.0 μg/m3 (5) 1.7 μg/m3 (7) 24.0
 
April 2, 2020, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 31.0 ppb (24) N/A 6.0 μg/m3 (5) 1.1 μg/m3 (5) 24.0
 
April 2, 2020, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 32.0 ppb (25) N/A 5.0 μg/m3 (5) 1.7 μg/m3 (7) 25.0
 
April 2, 2020, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 31.0 ppb (24) N/A 10.0 μg/m3 (9) 2.5 μg/m3 (10) 24.0
 
April 2, 2020, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 31.0 ppb (24) N/A 53.0 μg/m3 (48) 8.0 μg/m3 (33) 48.0
 
April 2, 2020, 1 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 24.0 ppb (18) N/A 62.0 μg/m3 (54) 10.3 μg/m3 (43) 54.0
 
April 2, 2020, noon N/A N/A N/A N/A N/A 3.0 ppb (4) 22.0 ppb (17) N/A 52.0 μg/m3 (47) 9.0 μg/m3 (38) 47.0
 
April 2, 2020, 11 a.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 23.0 ppb (18) N/A 34.0 μg/m3 (31) 6.1 μg/m3 (25) 31.0
 
April 2, 2020, 10 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 30.0 ppb (23) N/A 25.0 μg/m3 (23) 4.7 μg/m3 (20) 23.0
 
April 2, 2020, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 33.0 ppb (25) N/A 5.0 μg/m3 (5) 1.7 μg/m3 (7) 25.0
 
April 2, 2020, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 34.0 ppb (26) N/A 1.0 μg/m3 (1) 1.0 μg/m3 (4) 26.0
 
April 2, 2020, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 34.0 ppb (26) N/A 1.0 μg/m3 (1) 1.0 μg/m3 (4) 26.0
 
April 2, 2020, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 34.0 ppb (26) N/A 1.0 μg/m3 (1) 1.0 μg/m3 (4) 26.0
 
April 2, 2020, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 35.0 ppb (27) N/A 1.0 μg/m3 (1) 0.9 μg/m3 (4) 27.0
 
April 2, 2020, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 35.0 ppb (27) N/A 1.0 μg/m3 (1) 1.0 μg/m3 (4) 27.0
 
April 2, 2020, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 35.0 ppb (27) N/A 1.0 μg/m3 (1) 1.2 μg/m3 (5) 27.0
 
April 2, 2020, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 35.0 ppb (27) N/A 2.0 μg/m3 (2) 1.3 μg/m3 (5) 27.0
 
April 2, 2020, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 34.0 ppb (26) N/A 3.0 μg/m3 (3) 1.5 μg/m3 (6) 26.0
 
April 2, 2020, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) 35.0 ppb (27) N/A 2.0 μg/m3 (2) 1.5 μg/m3 (6) 27.0
 
April 1, 2020, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 37.0 ppb (28) N/A 4.0 μg/m3 (4) 1.3 μg/m3 (5) 28.0
 
April 1, 2020, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 37.0 ppb (28) N/A 4.0 μg/m3 (4) 1.5 μg/m3 (6) 28.0
 
April 1, 2020, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 37.0 ppb (28) N/A 6.0 μg/m3 (5) 2.1 μg/m3 (9) 28.0
 
April 1, 2020, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 38.0 ppb (29) N/A 7.0 μg/m3 (6) 2.5 μg/m3 (10) 29.0
 
April 1, 2020, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 39.0 ppb (30) N/A 7.0 μg/m3 (6) 2.4 μg/m3 (10) 30.0
 
April 1, 2020, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 39.0 ppb (30) N/A 5.0 μg/m3 (5) 2.5 μg/m3 (10) 30.0
 
April 1, 2020, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 38.0 ppb (29) N/A 4.0 μg/m3 (4) 2.2 μg/m3 (9) 29.0
 
April 1, 2020, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 38.0 ppb (29) N/A 4.0 μg/m3 (4) 1.9 μg/m3 (8) 29.0
 
April 1, 2020, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 38.0 ppb (29) N/A 4.0 μg/m3 (4) 2.0 μg/m3 (8) 29.0
 
April 1, 2020, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 38.0 ppb (29) N/A 3.0 μg/m3 (3) 1.9 μg/m3 (8) 29.0
 
April 1, 2020, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 37.0 ppb (28) N/A 4.0 μg/m3 (4) 2.7 μg/m3 (11) 28.0
 
April 1, 2020, noon N/A N/A N/A N/A N/A 1.0 ppb (1) 36.0 ppb (28) N/A 6.0 μg/m3 (5) 3.4 μg/m3 (14) 28.0
 
April 1, 2020, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 33.0 ppb (25) N/A 9.0 μg/m3 (8) 5.1 μg/m3 (21) 25.0
 
April 1, 2020, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 28.0 ppb (22) N/A 10.0 μg/m3 (9) 6.0 μg/m3 (25) 25.0
 
April 1, 2020, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 10.0 μg/m3 (9) 6.4 μg/m3 (27) 27.0
 
April 1, 2020, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 26.0 ppb (20) N/A 13.0 μg/m3 (12) 7.2 μg/m3 (30) 30.0
 
April 1, 2020, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 27.0 ppb (21) N/A 70.0 μg/m3 (58) 14.8 μg/m3 (56) 58.0
 
April 1, 2020, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 27.0 ppb (21) N/A 32.0 μg/m3 (29) 10.1 μg/m3 (42) 42.0
 
April 1, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 46.0 μg/m3 (42) 11.6 μg/m3 (48) 48.0
 
April 1, 2020, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 27.0 ppb (21) N/A 51.0 μg/m3 (46) 12.2 μg/m3 (50) 50.0
 
April 1, 2020, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 32.0 ppb (25) N/A 21.0 μg/m3 (19) 9.4 μg/m3 (39) 39.0
 
April 1, 2020, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 28.0 ppb (22) N/A 22.0 μg/m3 (20) 9.5 μg/m3 (40) 40.0
 
April 1, 2020, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 30.0 ppb (23) N/A 15.0 μg/m3 (14) 7.9 μg/m3 (33) 33.0
 
April 1, 2020, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) 39.0 ppb (30) N/A 10.0 μg/m3 (9) 5.2 μg/m3 (22) 30.0
 
March 31, 2020, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (32) N/A 10.0 μg/m3 (9) 4.9 μg/m3 (20) 32.0
 
March 31, 2020, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 43.0 ppb (33) N/A 11.0 μg/m3 (10) 5.0 μg/m3 (21) 33.0
 
March 31, 2020, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 43.0 ppb (33) N/A 10.0 μg/m3 (9) 5.0 μg/m3 (21) 33.0
 
March 31, 2020, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 44.0 ppb (34) N/A 11.0 μg/m3 (10) 5.2 μg/m3 (22) 34.0
 
March 31, 2020, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (34) N/A 12.0 μg/m3 (11) 5.2 μg/m3 (22) 34.0
 
March 31, 2020, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 43.0 ppb (33) N/A 11.0 μg/m3 (10) 5.1 μg/m3 (21) 33.0
 
March 31, 2020, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 42.0 ppb (32) N/A 11.0 μg/m3 (10) 4.9 μg/m3 (20) 32.0
 
March 31, 2020, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 42.0 ppb (32) N/A 8.0 μg/m3 (7) 4.2 μg/m3 (18) 32.0
 
March 31, 2020, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 41.0 ppb (32) N/A 8.0 μg/m3 (7) 4.2 μg/m3 (18) 32.0
 
March 31, 2020, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 40.0 ppb (31) N/A 8.0 μg/m3 (7) 4.1 μg/m3 (17) 31.0
 
March 31, 2020, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (30) N/A 8.0 μg/m3 (7) 4.2 μg/m3 (18) 30.0
 
March 31, 2020, noon N/A N/A N/A N/A N/A 0.0 ppb (0) 38.0 ppb (29) N/A 7.0 μg/m3 (6) 4.0 μg/m3 (17) 29.0
 
March 31, 2020, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 36.0 ppb (28) N/A 6.0 μg/m3 (5) 3.9 μg/m3 (16) 28.0
 
March 31, 2020, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 36.0 ppb (28) N/A 7.0 μg/m3 (6) 4.0 μg/m3 (17) 28.0
 
March 31, 2020, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 36.0 ppb (28) N/A 7.0 μg/m3 (6) 3.9 μg/m3 (16) 28.0
 
March 31, 2020, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 36.0 ppb (28) N/A 6.0 μg/m3 (5) 3.8 μg/m3 (16) 28.0
 
March 31, 2020, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 37.0 ppb (28) N/A 6.0 μg/m3 (5) 3.7 μg/m3 (15) 28.0
 
March 31, 2020, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 37.0 ppb (28) N/A 7.0 μg/m3 (6) 4.1 μg/m3 (17) 28.0
 
March 31, 2020, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 37.0 ppb (28) N/A 9.0 μg/m3 (8) 4.9 μg/m3 (20) 28.0
 
March 31, 2020, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 40.0 ppb (31) N/A 10.0 μg/m3 (9) 5.4 μg/m3 (23) 31.0
 
March 31, 2020, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (32) N/A 9.0 μg/m3 (8) 4.6 μg/m3 (19) 32.0
 
March 31, 2020, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 40.0 ppb (31) N/A 7.0 μg/m3 (6) 3.8 μg/m3 (16) 31.0
 
March 31, 2020, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 37.0 ppb (28) N/A 6.0 μg/m3 (5) 3.2 μg/m3 (13) 28.0
 
March 31, 2020, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 37.0 ppb (28) N/A 6.0 μg/m3 (5) 3.1 μg/m3 (13) 28.0
 
March 30, 2020, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 40.0 ppb (31) N/A 6.0 μg/m3 (5) 3.0 μg/m3 (12) 31.0
 
March 30, 2020, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (32) N/A 5.0 μg/m3 (5) 2.6 μg/m3 (11) 32.0
 
March 30, 2020, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 43.0 ppb (33) N/A 3.0 μg/m3 (3) 1.8 μg/m3 (8) 33.0
 
March 30, 2020, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 43.0 ppb (33) N/A 4.0 μg/m3 (4) 2.4 μg/m3 (10) 33.0
 
March 30, 2020, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 43.0 ppb (33) N/A 7.0 μg/m3 (6) 3.2 μg/m3 (13) 33.0
 
March 30, 2020, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (32) N/A 8.0 μg/m3 (7) 3.4 μg/m3 (14) 32.0
 
March 30, 2020, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (32) N/A 7.0 μg/m3 (6) 3.3 μg/m3 (14) 32.0
 
March 30, 2020, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (34) N/A 7.0 μg/m3 (6) 3.4 μg/m3 (14) 34.0
 
March 30, 2020, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 46.0 ppb (35) N/A 7.0 μg/m3 (6) 3.4 μg/m3 (14) 35.0
 
March 30, 2020, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 46.0 ppb (35) N/A 7.0 μg/m3 (6) 3.6 μg/m3 (15) 35.0
 
March 30, 2020, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 44.0 ppb (34) N/A 9.0 μg/m3 (8) 4.2 μg/m3 (18) 34.0
 
March 30, 2020, noon N/A N/A N/A N/A N/A 0.0 ppb (0) 45.0 ppb (35) N/A 11.0 μg/m3 (10) 5.0 μg/m3 (21) 35.0
 
March 30, 2020, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 45.0 ppb (35) N/A 10.0 μg/m3 (9) 4.5 μg/m3 (19) 35.0
 
March 30, 2020, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (34) N/A 8.0 μg/m3 (7) 3.9 μg/m3 (16) 34.0
 
March 30, 2020, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (34) N/A 8.0 μg/m3 (7) 4.0 μg/m3 (17) 34.0
 
March 30, 2020, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 45.0 ppb (35) N/A 8.0 μg/m3 (7) 4.4 μg/m3 (18) 35.0
 
March 30, 2020, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 44.0 ppb (34) N/A 12.0 μg/m3 (11) 6.1 μg/m3 (25) 34.0
 
March 30, 2020, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 43.0 ppb (33) N/A 19.0 μg/m3 (17) 8.2 μg/m3 (34) 34.0
 
March 30, 2020, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 43.0 ppb (33) N/A 19.0 μg/m3 (17) 8.3 μg/m3 (35) 35.0
 
March 30, 2020, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (34) N/A 21.0 μg/m3 (19) 8.8 μg/m3 (37) 37.0
 
March 30, 2020, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 42.0 ppb (32) N/A 23.0 μg/m3 (21) 9.5 μg/m3 (40) 40.0
 
March 30, 2020, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 42.0 ppb (32) N/A 24.0 μg/m3 (22) 9.6 μg/m3 (40) 40.0
 
March 30, 2020, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 41.0 ppb (32) N/A 23.0 μg/m3 (21) 9.3 μg/m3 (39) 39.0
 
March 30, 2020, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) 43.0 ppb (33) N/A 19.0 μg/m3 (17) 7.9 μg/m3 (33) 33.0
 
March 29, 2020, 11 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 42.0 ppb (32) N/A 17.0 μg/m3 (15) 7.2 μg/m3 (30) 32.0
 
March 29, 2020, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 43.0 ppb (33) N/A 16.0 μg/m3 (15) 7.1 μg/m3 (30) 33.0
 
March 29, 2020, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 43.0 ppb (33) N/A 15.0 μg/m3 (14) 6.6 μg/m3 (28) 33.0
 
March 29, 2020, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 39.0 ppb (30) N/A 13.0 μg/m3 (12) 6.0 μg/m3 (25) 30.0
 
March 29, 2020, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 44.0 ppb (34) N/A 12.0 μg/m3 (11) 5.6 μg/m3 (23) 34.0
 
March 29, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 12.0 μg/m3 (11) 5.5 μg/m3 (23) 35.0
 
March 29, 2020, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 43.0 ppb (33) N/A 12.0 μg/m3 (11) 5.7 μg/m3 (24) 33.0
 
March 29, 2020, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 33.0 ppb (25) N/A 11.0 μg/m3 (10) 6.1 μg/m3 (25) 25.0
 
March 29, 2020, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 40.0 ppb (31) N/A 10.0 μg/m3 (9) 5.0 μg/m3 (21) 31.0
 
March 29, 2020, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 8.0 μg/m3 (7) 4.5 μg/m3 (19) 19.0
 
March 29, 2020, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 39.0 ppb (30) N/A 9.0 μg/m3 (8) 4.9 μg/m3 (20) 30.0
 
March 29, 2020, noon N/A N/A N/A N/A N/A 1.0 ppb (1) 30.0 ppb (23) N/A 9.0 μg/m3 (8) 5.6 μg/m3 (23) 23.0
 
March 29, 2020, 11 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 29.0 ppb (22) N/A 9.0 μg/m3 (8) 5.2 μg/m3 (22) 22.0
 
March 29, 2020, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 35.0 ppb (27) N/A 8.0 μg/m3 (7) 4.7 μg/m3 (20) 27.0
 
March 29, 2020, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 35.0 ppb (27) N/A 10.0 μg/m3 (9) 5.3 μg/m3 (22) 27.0
 
March 29, 2020, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 34.0 ppb (26) N/A 10.0 μg/m3 (9) 6.0 μg/m3 (25) 26.0
 
March 29, 2020, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 33.0 ppb (25) N/A 10.0 μg/m3 (9) 6.3 μg/m3 (26) 26.0
 
March 29, 2020, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 32.0 ppb (25) N/A 12.0 μg/m3 (11) 6.6 μg/m3 (28) 28.0
 
March 29, 2020, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 33.0 ppb (25) N/A 12.0 μg/m3 (11) 6.6 μg/m3 (28) 28.0
 
March 29, 2020, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 34.0 ppb (26) N/A 12.0 μg/m3 (11) 6.9 μg/m3 (29) 29.0
 
March 29, 2020, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 35.0 ppb (27) N/A 13.0 μg/m3 (12) 7.0 μg/m3 (29) 29.0
 
March 29, 2020, 2 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 36.0 ppb (28) N/A 13.0 μg/m3 (12) 6.7 μg/m3 (28) 28.0
 
March 29, 2020, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 38.0 ppb (29) N/A 12.0 μg/m3 (11) 6.8 μg/m3 (28) 29.0
 
March 29, 2020, midnight N/A N/A N/A N/A N/A 2.0 ppb (3) 40.0 ppb (31) N/A 12.0 μg/m3 (11) 6.3 μg/m3 (26) 31.0
 
March 28, 2020, 11 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 41.0 ppb (32) N/A 13.0 μg/m3 (12) 5.8 μg/m3 (24) 32.0
 
March 28, 2020, 10 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 42.0 ppb (32) N/A 10.0 μg/m3 (9) 4.8 μg/m3 (20) 32.0
 
March 28, 2020, 9 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 42.0 ppb (32) N/A 12.0 μg/m3 (11) 4.6 μg/m3 (19) 32.0
 
March 28, 2020, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 41.0 ppb (32) N/A 11.0 μg/m3 (10) 4.5 μg/m3 (19) 32.0
 
March 28, 2020, 7 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 41.0 ppb (32) N/A 9.0 μg/m3 (8) 4.4 μg/m3 (18) 32.0
 
March 28, 2020, 6 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 41.0 ppb (32) N/A 9.0 μg/m3 (8) 4.4 μg/m3 (18) 32.0
 
March 28, 2020, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 41.0 ppb (32) N/A 9.0 μg/m3 (8) 4.1 μg/m3 (17) 32.0
 
March 28, 2020, 4 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 41.0 ppb (32) N/A 8.0 μg/m3 (7) 3.9 μg/m3 (16) 32.0
 
March 28, 2020, 3 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 40.0 ppb (31) N/A 8.0 μg/m3 (7) 3.9 μg/m3 (16) 31.0
 
March 28, 2020, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 39.0 ppb (30) N/A 21.0 μg/m3 (19) 5.6 μg/m3 (23) 30.0
 
March 28, 2020, 1 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 33.0 ppb (25) N/A 64.0 μg/m3 (54) 10.7 μg/m3 (45) 54.0
 
March 28, 2020, noon N/A N/A N/A N/A N/A 4.0 ppb (6) 27.0 ppb (21) N/A 99.0 μg/m3 (72) 15.4 μg/m3 (57) 72.0
 
March 28, 2020, 11 a.m. N/A N/A N/A N/A N/A 4.0 ppb (6) 19.0 ppb (15) N/A 78.0 μg/m3 (62) 12.3 μg/m3 (51) 62.0
 
March 28, 2020, 10 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 23.0 ppb (18) N/A 23.0 μg/m3 (21) 6.5 μg/m3 (27) 27.0
 
March 28, 2020, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 38.0 μg/m3 (35) 7.9 μg/m3 (33) 35.0
 
March 28, 2020, 8 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 19.0 ppb (15) N/A 56.0 μg/m3 (50) 9.3 μg/m3 (39) 50.0
 
March 28, 2020, 7 a.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 24.0 ppb (18) N/A 21.0 μg/m3 (19) 5.4 μg/m3 (23) 23.0
 
March 28, 2020, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 32.0 ppb (25) N/A 6.0 μg/m3 (5) 3.9 μg/m3 (16) 25.0
 
March 28, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 15.0 μg/m3 (14) 4.7 μg/m3 (20) 25.0
 
March 28, 2020, 4 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 33.0 ppb (25) N/A 77.0 μg/m3 (61) 10.1 μg/m3 (42) 61.0
 
March 28, 2020, 3 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 34.0 ppb (26) N/A 15.0 μg/m3 (14) 4.5 μg/m3 (19) 26.0
 
March 28, 2020, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 35.0 ppb (27) N/A 33.0 μg/m3 (30) 6.0 μg/m3 (25) 30.0