ID: 1249

AQSQID: 330150014

Site Name: Portsmouth

Added: April 21, 2020, 6:24 p.m.

Updated: April 18, 2021, 5:43 a.m.

Location: Portsmouth (Downtown), NH

Reporting: True, Located: True

Current AQI: 23.0

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 18, 2021, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 17.0 ppb (16) N/A 9.6 μg/m3 (9) 5.3 μg/m3 (23) 23.0
 
April 18, 2021, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 18.0 ppb (17) N/A 12.5 μg/m3 (12) 6.8 μg/m3 (29) 29.0
 
April 18, 2021, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 15.0 ppb (14) N/A 13.9 μg/m3 (13) 7.2 μg/m3 (31) 31.0
 
April 18, 2021, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 21.0 ppb (20) N/A 14.9 μg/m3 (14) 6.7 μg/m3 (28) 28.0
 
April 18, 2021, midnight N/A N/A N/A N/A N/A 1.0 ppb (2) 27.0 ppb (25) N/A 12.4 μg/m3 (12) 4.7 μg/m3 (20) 25.0
 
April 17, 2021, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 30.0 ppb (28) N/A 9.7 μg/m3 (9) 3.7 μg/m3 (16) 28.0
 
April 17, 2021, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 31.0 ppb (29) N/A 7.0 μg/m3 (7) 3.2 μg/m3 (14) 29.0
 
April 17, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 32.0 ppb (30) N/A 3.9 μg/m3 (4) 2.2 μg/m3 (10) 30.0
 
April 17, 2021, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 33.0 ppb (31) N/A 3.1 μg/m3 (3) 1.6 μg/m3 (7) 31.0
 
April 17, 2021, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 34.0 ppb (32) N/A 2.6 μg/m3 (3) 1.4 μg/m3 (6) 32.0
 
April 17, 2021, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 34.0 ppb (32) N/A 2.9 μg/m3 (3) 1.5 μg/m3 (7) 32.0
 
April 17, 2021, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 33.0 ppb (31) N/A 2.1 μg/m3 (2) 1.4 μg/m3 (6) 31.0
 
April 17, 2021, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 33.0 ppb (31) N/A 2.0 μg/m3 (2) 1.6 μg/m3 (7) 31.0
 
April 17, 2021, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 32.0 ppb (30) N/A 1.8 μg/m3 (2) 1.3 μg/m3 (6) 30.0
 
April 17, 2021, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 31.0 ppb (29) N/A 1.6 μg/m3 (2) 1.0 μg/m3 (5) 29.0
 
April 17, 2021, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 30.0 ppb (28) N/A 1.3 μg/m3 (2) 0.8 μg/m3 (4) 28.0
 
April 17, 2021, noon N/A N/A N/A N/A N/A 1.0 ppb (2) 28.0 ppb (26) N/A 1.5 μg/m3 (2) 0.7 μg/m3 (3) 26.0
 
April 17, 2021, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 28.0 ppb (26) N/A 1.1 μg/m3 (2) 0.6 μg/m3 (3) 26.0
 
April 17, 2021, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 28.0 ppb (26) N/A 0.9 μg/m3 (1) 0.5 μg/m3 (3) 26.0
 
April 17, 2021, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 29.0 ppb (27) N/A 0.9 μg/m3 (1) 0.4 μg/m3 (2) 27.0
 
April 17, 2021, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 32.0 ppb (30) N/A 1.0 μg/m3 (1) 0.5 μg/m3 (3) 30.0
 
April 17, 2021, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 34.0 ppb (32) N/A 1.7 μg/m3 (2) 0.7 μg/m3 (3) 32.0
 
April 17, 2021, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 35.0 ppb (33) N/A 1.6 μg/m3 (2) 0.6 μg/m3 (3) 33.0
 
April 17, 2021, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 35.0 ppb (33) N/A 1.0 μg/m3 (1) 0.5 μg/m3 (3) 33.0
 
April 17, 2021, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 35.0 ppb (33) N/A 1.6 μg/m3 (2) 0.7 μg/m3 (3) 33.0
 
April 17, 2021, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 35.0 ppb (33) N/A 1.1 μg/m3 (2) 0.7 μg/m3 (3) 33.0
 
April 17, 2021, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 34.0 ppb (32) N/A 1.4 μg/m3 (2) 0.9 μg/m3 (4) 32.0
 
April 17, 2021, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 34.0 ppb (32) N/A 2.3 μg/m3 (3) 1.3 μg/m3 (6) 32.0
 
April 17, 2021, midnight N/A N/A N/A N/A N/A 1.0 ppb (2) 33.0 ppb (31) N/A 4.0 μg/m3 (4) 2.1 μg/m3 (9) 31.0
 
April 16, 2021, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 33.0 ppb (31) N/A 6.2 μg/m3 (6) 2.9 μg/m3 (13) 31.0
 
April 16, 2021, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 35.0 ppb (33) N/A 8.7 μg/m3 (9) 3.9 μg/m3 (17) 33.0
 
April 16, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 37.0 ppb (35) N/A 7.9 μg/m3 (8) 3.5 μg/m3 (15) 35.0
 
April 16, 2021, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 36.0 ppb (34) N/A 5.5 μg/m3 (6) 2.5 μg/m3 (11) 34.0
 
April 16, 2021, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 35.0 ppb (33) N/A 6.2 μg/m3 (6) 2.7 μg/m3 (12) 33.0
 
April 16, 2021, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 36.0 ppb (34) N/A 7.9 μg/m3 (8) 3.5 μg/m3 (15) 34.0
 
April 16, 2021, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 36.0 ppb (34) N/A 9.0 μg/m3 (9) 4.1 μg/m3 (18) 34.0
 
April 16, 2021, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 36.0 ppb (34) N/A 9.4 μg/m3 (9) 4.0 μg/m3 (17) 34.0
 
April 16, 2021, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 34.0 ppb (32) N/A 20.5 μg/m3 (19) 3.5 μg/m3 (15) 32.0
 
April 16, 2021, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 36.0 ppb (34) N/A 9.8 μg/m3 (10) 4.0 μg/m3 (17) 34.0
 
April 16, 2021, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 37.0 ppb (35) N/A 9.0 μg/m3 (9) 3.8 μg/m3 (16) 35.0
 
April 16, 2021, noon N/A N/A N/A N/A N/A 1.0 ppb (2) 39.0 ppb (37) N/A 10.6 μg/m3 (10) 4.3 μg/m3 (18) 37.0
 
April 16, 2021, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 37.0 ppb (35) N/A 12.1 μg/m3 (12) 5.4 μg/m3 (23) 35.0
 
April 16, 2021, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 39.0 ppb (37) N/A 13.2 μg/m3 (13) 5.9 μg/m3 (25) 37.0
 
April 16, 2021, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A 16.0 μg/m3 (15) 6.8 μg/m3 (29) 29.0
 
April 16, 2021, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 39.0 ppb (37) N/A 17.2 μg/m3 (16) 6.9 μg/m3 (29) 37.0
 
April 16, 2021, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 40.0 ppb (38) N/A 16.9 μg/m3 (16) 6.9 μg/m3 (29) 38.0
 
April 16, 2021, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 40.0 ppb (38) N/A 16.3 μg/m3 (16) 7.0 μg/m3 (30) 38.0
 
April 16, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 16.7 μg/m3 (16) 7.0 μg/m3 (30) 36.0
 
April 16, 2021, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 37.0 ppb (35) N/A 16.6 μg/m3 (16) 7.0 μg/m3 (30) 35.0
 
April 16, 2021, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 37.0 ppb (35) N/A 15.7 μg/m3 (15) 6.7 μg/m3 (28) 35.0
 
April 16, 2021, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 37.0 ppb (35) N/A 14.8 μg/m3 (14) 6.5 μg/m3 (28) 35.0
 
April 16, 2021, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 37.0 ppb (35) N/A 14.7 μg/m3 (14) 6.4 μg/m3 (27) 35.0
 
April 16, 2021, midnight N/A N/A N/A N/A N/A 1.0 ppb (2) 36.0 ppb (34) N/A 13.7 μg/m3 (13) 6.1 μg/m3 (26) 34.0
 
April 15, 2021, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 35.0 ppb (33) N/A 14.2 μg/m3 (14) 6.1 μg/m3 (26) 33.0
 
April 15, 2021, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 36.0 ppb (34) N/A 14.3 μg/m3 (14) 6.1 μg/m3 (26) 34.0
 
April 15, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 36.0 ppb (34) N/A 14.5 μg/m3 (14) 6.1 μg/m3 (26) 34.0
 
April 15, 2021, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 36.0 ppb (34) N/A 14.9 μg/m3 (14) 6.3 μg/m3 (27) 34.0
 
April 15, 2021, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 36.0 ppb (34) N/A 15.5 μg/m3 (15) 6.4 μg/m3 (27) 34.0
 
April 15, 2021, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 37.0 ppb (35) N/A 18.6 μg/m3 (18) 6.2 μg/m3 (26) 35.0
 
April 15, 2021, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 38.0 ppb (36) N/A 15.1 μg/m3 (14) 6.1 μg/m3 (26) 36.0
 
April 15, 2021, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 37.0 ppb (35) N/A 16.1 μg/m3 (15) 6.4 μg/m3 (27) 35.0
 
April 15, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 15.1 μg/m3 (14) 6.2 μg/m3 (26) 36.0
 
April 15, 2021, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A 16.1 μg/m3 (15) 6.4 μg/m3 (27) 27.0
 
April 15, 2021, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 37.0 ppb (35) N/A 15.8 μg/m3 (15) 5.9 μg/m3 (25) 35.0
 
April 15, 2021, noon N/A N/A N/A N/A N/A 1.0 ppb (2) 35.0 ppb (33) N/A 16.4 μg/m3 (16) 6.0 μg/m3 (25) 33.0
 
April 15, 2021, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 29.0 ppb (27) N/A 17.3 μg/m3 (17) 6.8 μg/m3 (29) 29.0
 
April 15, 2021, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 25.0 ppb (24) N/A 16.7 μg/m3 (16) 7.0 μg/m3 (30) 30.0
 
April 15, 2021, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 23.0 ppb (22) N/A 15.6 μg/m3 (15) 6.7 μg/m3 (28) 28.0
 
April 15, 2021, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 25.0 ppb (24) N/A 16.8 μg/m3 (16) 7.0 μg/m3 (30) 30.0
 
April 15, 2021, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 29.0 ppb (27) N/A 17.0 μg/m3 (16) 6.7 μg/m3 (28) 28.0
 
April 15, 2021, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 29.0 ppb (27) N/A 17.0 μg/m3 (16) 6.5 μg/m3 (28) 28.0
 
April 15, 2021, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 32.0 ppb (30) N/A 14.8 μg/m3 (14) 5.9 μg/m3 (25) 30.0
 
April 15, 2021, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 31.0 ppb (29) N/A 18.9 μg/m3 (18) 6.7 μg/m3 (28) 29.0
 
April 15, 2021, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 32.0 ppb (30) N/A 21.7 μg/m3 (21) 7.4 μg/m3 (31) 31.0
 
April 15, 2021, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 32.0 ppb (30) N/A 17.5 μg/m3 (17) 6.7 μg/m3 (28) 30.0
 
April 15, 2021, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 33.0 ppb (31) N/A 16.3 μg/m3 (16) 6.4 μg/m3 (27) 31.0
 
April 15, 2021, midnight N/A N/A N/A N/A N/A 1.0 ppb (2) 35.0 ppb (33) N/A 14.7 μg/m3 (14) 6.0 μg/m3 (25) 33.0
 
April 14, 2021, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 36.0 ppb (34) N/A 13.7 μg/m3 (13) 5.6 μg/m3 (24) 34.0
 
April 14, 2021, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 38.0 ppb (36) N/A 12.1 μg/m3 (12) 5.3 μg/m3 (23) 36.0
 
April 14, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 38.0 ppb (36) N/A 12.6 μg/m3 (12) 5.5 μg/m3 (23) 36.0
 
April 14, 2021, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 38.0 ppb (36) N/A 14.8 μg/m3 (14) 5.7 μg/m3 (24) 36.0
 
April 14, 2021, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 37.0 ppb (35) N/A 14.8 μg/m3 (14) 5.8 μg/m3 (25) 35.0
 
April 14, 2021, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 37.0 ppb (35) N/A 16.2 μg/m3 (15) 6.8 μg/m3 (29) 35.0
 
April 14, 2021, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 37.0 ppb (35) N/A 15.7 μg/m3 (15) 6.5 μg/m3 (28) 35.0
 
April 14, 2021, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 35.0 ppb (33) N/A 18.3 μg/m3 (17) 6.9 μg/m3 (29) 33.0
 
April 14, 2021, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 37.0 ppb (35) N/A 18.2 μg/m3 (17) 7.4 μg/m3 (31) 35.0
 
April 14, 2021, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 37.0 ppb (35) N/A 19.9 μg/m3 (19) 7.2 μg/m3 (31) 35.0
 
April 14, 2021, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 37.0 ppb (35) N/A 20.0 μg/m3 (19) 7.6 μg/m3 (32) 35.0
 
April 14, 2021, noon N/A N/A N/A N/A N/A 1.0 ppb (2) 35.0 ppb (33) N/A 20.7 μg/m3 (20) 7.6 μg/m3 (32) 33.0
 
April 14, 2021, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 36.0 ppb (34) N/A 18.8 μg/m3 (18) 7.3 μg/m3 (31) 34.0
 
April 14, 2021, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 33.0 ppb (31) N/A 15.3 μg/m3 (15) 6.4 μg/m3 (27) 31.0
 
April 14, 2021, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 30.0 ppb (28) N/A 14.7 μg/m3 (14) 6.1 μg/m3 (26) 28.0
 
April 14, 2021, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 32.0 ppb (30) N/A 13.9 μg/m3 (13) 5.9 μg/m3 (25) 30.0
 
April 14, 2021, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 34.0 ppb (32) N/A 14.3 μg/m3 (14) 5.9 μg/m3 (25) 32.0
 
April 14, 2021, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 35.0 ppb (33) N/A 13.3 μg/m3 (13) 5.6 μg/m3 (24) 33.0
 
April 14, 2021, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 35.0 ppb (33) N/A 12.5 μg/m3 (12) 5.3 μg/m3 (23) 33.0
 
April 14, 2021, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 36.0 ppb (34) N/A 11.7 μg/m3 (11) 4.9 μg/m3 (21) 34.0
 
April 14, 2021, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 36.0 ppb (34) N/A 11.4 μg/m3 (11) 4.8 μg/m3 (20) 34.0
 
April 14, 2021, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 37.0 ppb (35) N/A 11.3 μg/m3 (11) 4.8 μg/m3 (20) 35.0
 
April 14, 2021, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 37.0 ppb (35) N/A 11.5 μg/m3 (11) 4.7 μg/m3 (20) 35.0
 
April 14, 2021, midnight N/A N/A N/A N/A N/A 1.0 ppb (2) 38.0 ppb (36) N/A 12.4 μg/m3 (12) 4.4 μg/m3 (19) 36.0
 
April 13, 2021, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 39.0 ppb (37) N/A 11.7 μg/m3 (11) 4.3 μg/m3 (18) 37.0
 
April 13, 2021, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 41.0 ppb (38) N/A 13.1 μg/m3 (13) 4.6 μg/m3 (20) 38.0
 
April 13, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 40.0 ppb (38) N/A 13.1 μg/m3 (13) 4.5 μg/m3 (19) 38.0
 
April 13, 2021, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 41.0 ppb (38) N/A 12.3 μg/m3 (12) 4.5 μg/m3 (19) 38.0
 
April 13, 2021, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 40.0 ppb (38) N/A 16.0 μg/m3 (15) 4.6 μg/m3 (20) 38.0
 
April 13, 2021, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 41.0 ppb (38) N/A 18.0 μg/m3 (17) 4.6 μg/m3 (20) 38.0
 
April 13, 2021, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 40.0 ppb (38) N/A 16.0 μg/m3 (15) 4.5 μg/m3 (19) 38.0
 
April 13, 2021, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 38.0 ppb (36) N/A 12.7 μg/m3 (12) 4.0 μg/m3 (17) 36.0
 
April 13, 2021, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 38.0 ppb (36) N/A 10.8 μg/m3 (10) 3.8 μg/m3 (16) 36.0
 
April 13, 2021, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 38.0 ppb (36) N/A 10.7 μg/m3 (10) 4.0 μg/m3 (17) 36.0
 
April 13, 2021, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 38.0 ppb (36) N/A 12.9 μg/m3 (12) 4.2 μg/m3 (18) 36.0
 
April 13, 2021, noon N/A N/A N/A N/A N/A 1.0 ppb (2) 37.0 ppb (35) N/A 10.2 μg/m3 (10) 4.5 μg/m3 (19) 35.0
 
April 13, 2021, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 36.0 ppb (34) N/A 10.1 μg/m3 (10) 4.4 μg/m3 (19) 34.0
 
April 13, 2021, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 33.0 ppb (31) N/A 9.6 μg/m3 (9) 4.3 μg/m3 (18) 31.0
 
April 13, 2021, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 32.0 ppb (30) N/A 9.1 μg/m3 (9) 4.3 μg/m3 (18) 30.0
 
April 13, 2021, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 29.0 ppb (27) N/A 9.6 μg/m3 (9) 4.6 μg/m3 (20) 27.0
 
April 13, 2021, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 28.0 ppb (26) N/A 11.2 μg/m3 (11) 5.4 μg/m3 (23) 26.0
 
April 13, 2021, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 30.0 ppb (28) N/A 15.7 μg/m3 (15) 6.5 μg/m3 (28) 28.0
 
April 13, 2021, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 29.0 ppb (27) N/A 23.6 μg/m3 (22) 7.2 μg/m3 (31) 31.0
 
April 13, 2021, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 31.0 ppb (29) N/A 13.5 μg/m3 (13) 5.7 μg/m3 (24) 29.0
 
April 13, 2021, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 32.0 ppb (30) N/A 14.0 μg/m3 (13) 6.3 μg/m3 (27) 30.0
 
April 13, 2021, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 30.0 ppb (28) N/A 15.2 μg/m3 (15) 7.1 μg/m3 (30) 30.0
 
April 13, 2021, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 31.0 ppb (29) N/A 17.9 μg/m3 (17) 7.3 μg/m3 (31) 31.0
 
April 13, 2021, midnight N/A N/A N/A N/A N/A 1.0 ppb (2) 36.0 ppb (34) N/A 16.5 μg/m3 (16) 6.2 μg/m3 (26) 34.0
 
April 12, 2021, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 39.0 ppb (37) N/A 14.8 μg/m3 (14) 5.7 μg/m3 (24) 37.0
 
April 12, 2021, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 41.0 ppb (38) N/A 15.1 μg/m3 (14) 5.7 μg/m3 (24) 38.0
 
April 12, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 41.0 ppb (38) N/A 15.0 μg/m3 (14) 5.7 μg/m3 (24) 38.0
 
April 12, 2021, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 40.0 ppb (38) N/A 15.8 μg/m3 (15) 6.2 μg/m3 (26) 38.0
 
April 12, 2021, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 40.0 ppb (38) N/A 15.9 μg/m3 (15) 6.3 μg/m3 (27) 38.0
 
April 12, 2021, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 39.0 ppb (37) N/A 12.6 μg/m3 (12) 5.1 μg/m3 (22) 37.0
 
April 12, 2021, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 37.0 ppb (35) N/A 10.3 μg/m3 (10) 3.9 μg/m3 (17) 35.0
 
April 12, 2021, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 36.0 ppb (34) N/A 8.3 μg/m3 (8) 3.3 μg/m3 (14) 34.0
 
April 12, 2021, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 36.0 ppb (34) N/A 7.8 μg/m3 (8) 2.1 μg/m3 (9) 34.0
 
April 12, 2021, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 34.0 ppb (32) N/A 7.1 μg/m3 (7) 1.7 μg/m3 (8) 32.0
 
April 12, 2021, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 33.0 ppb (31) N/A 6.5 μg/m3 (7) 1.7 μg/m3 (8) 31.0
 
April 12, 2021, noon N/A N/A N/A N/A N/A 1.0 ppb (2) 31.0 ppb (29) N/A 7.1 μg/m3 (7) 2.8 μg/m3 (12) 29.0
 
April 12, 2021, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 24.0 ppb (23) N/A 7.3 μg/m3 (7) 3.6 μg/m3 (16) 23.0
 
April 12, 2021, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 25.0 ppb (24) N/A 8.2 μg/m3 (8) 3.9 μg/m3 (17) 24.0
 
April 12, 2021, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A 10.0 μg/m3 (10) 4.9 μg/m3 (21) 21.0
 
April 12, 2021, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 23.0 ppb (22) N/A 10.4 μg/m3 (10) 5.2 μg/m3 (22) 22.0
 
April 12, 2021, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 25.0 ppb (24) N/A 10.6 μg/m3 (10) 5.3 μg/m3 (23) 24.0
 
April 12, 2021, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 24.0 ppb (23) N/A 13.0 μg/m3 (13) 6.6 μg/m3 (28) 28.0
 
April 12, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 16.1 μg/m3 (15) 8.3 μg/m3 (35) 35.0
 
April 12, 2021, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 26.0 ppb (25) N/A 17.0 μg/m3 (16) 8.1 μg/m3 (34) 34.0
 
April 12, 2021, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 28.0 ppb (26) N/A 20.2 μg/m3 (19) 9.1 μg/m3 (38) 38.0
 
April 12, 2021, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 27.0 ppb (25) N/A 17.6 μg/m3 (17) 8.1 μg/m3 (34) 34.0
 
April 12, 2021, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 31.0 ppb (29) N/A 18.5 μg/m3 (18) 7.7 μg/m3 (33) 33.0
 
April 12, 2021, midnight N/A N/A N/A N/A N/A 1.0 ppb (2) 32.0 ppb (30) N/A 18.1 μg/m3 (17) 7.7 μg/m3 (33) 33.0
 
April 11, 2021, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 33.0 ppb (31) N/A 18.5 μg/m3 (18) 7.7 μg/m3 (33) 33.0
 
April 11, 2021, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 34.0 ppb (32) N/A 18.1 μg/m3 (17) 7.6 μg/m3 (32) 32.0
 
April 11, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 34.0 ppb (32) N/A 17.4 μg/m3 (17) 7.4 μg/m3 (31) 32.0
 
April 11, 2021, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 35.0 ppb (33) N/A 17.1 μg/m3 (16) 7.1 μg/m3 (30) 33.0
 
April 11, 2021, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 35.0 ppb (33) N/A 15.7 μg/m3 (15) 7.1 μg/m3 (30) 33.0
 
April 11, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 16.4 μg/m3 (16) 7.4 μg/m3 (31) 33.0
 
April 11, 2021, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 34.0 ppb (32) N/A 17.9 μg/m3 (17) 8.2 μg/m3 (35) 35.0
 
April 11, 2021, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 33.0 ppb (31) N/A 20.5 μg/m3 (19) 9.1 μg/m3 (38) 38.0
 
April 11, 2021, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 32.0 ppb (30) N/A 22.0 μg/m3 (21) 9.5 μg/m3 (40) 40.0
 
April 11, 2021, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A 20.8 μg/m3 (20) 8.8 μg/m3 (37) 37.0
 
April 11, 2021, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 32.0 ppb (30) N/A 18.7 μg/m3 (18) 8.4 μg/m3 (36) 36.0
 
April 11, 2021, noon N/A N/A N/A N/A N/A 0.0 ppb (0) 32.0 ppb (30) N/A 17.9 μg/m3 (17) 7.7 μg/m3 (33) 33.0
 
April 11, 2021, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 32.0 ppb (30) N/A 16.7 μg/m3 (16) 7.1 μg/m3 (30) 30.0
 
April 11, 2021, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 34.0 ppb (32) N/A 19.0 μg/m3 (18) 8.2 μg/m3 (35) 35.0
 
April 11, 2021, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 34.0 ppb (32) N/A 19.1 μg/m3 (18) 8.2 μg/m3 (35) 35.0
 
April 11, 2021, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 34.0 ppb (32) N/A 18.5 μg/m3 (18) 8.1 μg/m3 (34) 34.0
 
April 11, 2021, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 33.0 ppb (31) N/A 12.8 μg/m3 (12) 6.6 μg/m3 (28) 31.0
 
April 11, 2021, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 33.0 ppb (31) N/A 14.7 μg/m3 (14) 7.3 μg/m3 (31) 31.0
 
April 11, 2021, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 31.0 ppb (29) N/A 21.1 μg/m3 (20) 10.5 μg/m3 (44) 44.0