ID: 1249

AQSQID: 330150014

Site Name: Portsmouth

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

Updated: Jan. 28, 2021, 8:32 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
Jan. 28, 2021, 7 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 22.0 ppb (21) N/A 8.5 μg/m3 (8) 5.3 μg/m3 (23) 23.0
 
Jan. 28, 2021, 6 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 21.0 ppb (20) N/A 9.0 μg/m3 (9) 5.8 μg/m3 (25) 25.0
 
Jan. 28, 2021, 5 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 22.0 ppb (21) N/A 10.0 μg/m3 (10) 6.6 μg/m3 (28) 28.0
 
Jan. 28, 2021, 4 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 22.0 ppb (21) N/A 9.7 μg/m3 (9) 6.3 μg/m3 (27) 27.0
 
Jan. 28, 2021, 3 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 24.0 ppb (23) N/A 8.4 μg/m3 (8) 5.2 μg/m3 (22) 23.0
 
Jan. 28, 2021, 2 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 25.0 ppb (24) N/A 8.0 μg/m3 (8) 4.9 μg/m3 (21) 24.0
 
Jan. 28, 2021, 1 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 26.0 ppb (25) N/A 8.9 μg/m3 (9) 5.6 μg/m3 (24) 25.0
 
Jan. 28, 2021, midnight N/A N/A N/A N/A N/A 2.0 ppb (3) 26.0 ppb (25) N/A 9.1 μg/m3 (9) 5.7 μg/m3 (24) 25.0
 
Jan. 27, 2021, 11 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 27.0 ppb (25) N/A 9.0 μg/m3 (9) 5.7 μg/m3 (24) 25.0
 
Jan. 27, 2021, 10 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 27.0 ppb (25) N/A 7.8 μg/m3 (8) 4.8 μg/m3 (20) 25.0
 
Jan. 27, 2021, 9 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 27.0 ppb (25) N/A 7.8 μg/m3 (8) 4.5 μg/m3 (19) 25.0
 
Jan. 27, 2021, 8 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 28.0 ppb (26) N/A 7.2 μg/m3 (7) 4.1 μg/m3 (18) 26.0
 
Jan. 27, 2021, 7 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 30.0 ppb (28) N/A 6.6 μg/m3 (7) 4.1 μg/m3 (18) 28.0
 
Jan. 27, 2021, 6 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 29.0 ppb (27) N/A 7.8 μg/m3 (8) 4.6 μg/m3 (20) 27.0
 
Jan. 27, 2021, 5 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 29.0 ppb (27) N/A 7.4 μg/m3 (7) 4.4 μg/m3 (19) 27.0
 
Jan. 27, 2021, 4 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 30.0 ppb (28) N/A 7.3 μg/m3 (7) 4.2 μg/m3 (18) 28.0
 
Jan. 27, 2021, 3 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 29.0 ppb (27) N/A 7.7 μg/m3 (8) 4.2 μg/m3 (18) 27.0
 
Jan. 27, 2021, 2 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 28.0 ppb (26) N/A 8.4 μg/m3 (8) 4.5 μg/m3 (19) 26.0
 
Jan. 27, 2021, 1 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 28.0 ppb (26) N/A 8.7 μg/m3 (9) 4.6 μg/m3 (20) 26.0
 
Jan. 27, 2021, noon N/A N/A N/A N/A N/A 2.0 ppb (3) 28.0 ppb (26) N/A 8.4 μg/m3 (8) 4.3 μg/m3 (18) 26.0
 
Jan. 27, 2021, 11 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 29.0 ppb (27) N/A 7.9 μg/m3 (8) 4.2 μg/m3 (18) 27.0
 
Jan. 27, 2021, 10 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 30.0 ppb (28) N/A 7.4 μg/m3 (7) 3.9 μg/m3 (17) 28.0
 
Jan. 27, 2021, 9 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 31.0 ppb (29) N/A 7.3 μg/m3 (7) 3.8 μg/m3 (16) 29.0
 
Jan. 27, 2021, 8 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 31.0 ppb (29) N/A 7.5 μg/m3 (7) 3.9 μg/m3 (17) 29.0
 
Jan. 27, 2021, 7 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 31.0 ppb (29) N/A 7.8 μg/m3 (8) 4.1 μg/m3 (18) 29.0
 
Jan. 27, 2021, 6 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 32.0 ppb (30) N/A 7.7 μg/m3 (8) 4.2 μg/m3 (18) 30.0
 
Jan. 27, 2021, 5 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 32.0 ppb (30) N/A 8.3 μg/m3 (8) 4.4 μg/m3 (19) 30.0
 
Jan. 27, 2021, 4 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 32.0 ppb (30) N/A 9.1 μg/m3 (9) 5.1 μg/m3 (22) 30.0
 
Jan. 27, 2021, 3 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 31.0 ppb (29) N/A 9.5 μg/m3 (9) 5.7 μg/m3 (24) 29.0
 
Jan. 27, 2021, 2 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 30.0 ppb (28) N/A 11.1 μg/m3 (11) 6.2 μg/m3 (26) 28.0
 
Jan. 27, 2021, 1 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 32.0 ppb (30) N/A 12.9 μg/m3 (12) 5.6 μg/m3 (24) 30.0
 
Jan. 27, 2021, midnight N/A N/A N/A N/A N/A 2.0 ppb (3) 28.0 ppb (26) N/A 12.8 μg/m3 (12) 4.9 μg/m3 (21) 26.0
 
Jan. 26, 2021, 11 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 32.0 ppb (30) N/A 10.3 μg/m3 (10) 4.0 μg/m3 (17) 30.0
 
Jan. 26, 2021, 10 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 36.0 ppb (34) N/A 7.9 μg/m3 (8) 2.9 μg/m3 (13) 34.0
 
Jan. 26, 2021, 9 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 39.0 ppb (37) N/A 5.3 μg/m3 (5) 2.5 μg/m3 (11) 37.0
 
Jan. 26, 2021, 8 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 39.0 ppb (37) N/A 4.8 μg/m3 (5) 2.2 μg/m3 (10) 37.0
 
Jan. 26, 2021, 7 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 40.0 ppb (38) N/A 5.9 μg/m3 (6) 2.5 μg/m3 (11) 38.0
 
Jan. 26, 2021, 6 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 38.0 ppb (36) N/A 7.7 μg/m3 (8) 2.7 μg/m3 (12) 36.0
 
Jan. 26, 2021, 5 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 37.0 ppb (35) N/A 7.1 μg/m3 (7) 2.3 μg/m3 (10) 35.0
 
Jan. 26, 2021, 4 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 37.0 ppb (35) N/A 16.9 μg/m3 (16) 4.2 μg/m3 (18) 35.0
 
Jan. 26, 2021, 3 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 33.0 ppb (31) N/A 19.6 μg/m3 (19) 5.6 μg/m3 (24) 31.0
 
Jan. 26, 2021, 2 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 27.0 ppb (25) N/A 14.2 μg/m3 (14) 6.3 μg/m3 (27) 27.0
 
Jan. 26, 2021, 1 p.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 25.0 ppb (24) N/A 23.0 μg/m3 (22) 8.0 μg/m3 (34) 34.0
 
Jan. 26, 2021, noon N/A N/A N/A N/A N/A 3.0 ppb (5) 6.0 ppb (6) N/A 13.8 μg/m3 (13) 7.1 μg/m3 (30) 30.0
 
Jan. 26, 2021, 11 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 17.0 ppb (16) N/A 9.9 μg/m3 (10) 6.0 μg/m3 (25) 25.0
 
Jan. 26, 2021, 10 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 21.0 ppb (20) N/A 9.2 μg/m3 (9) 5.3 μg/m3 (23) 23.0
 
Jan. 26, 2021, 9 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A 9.6 μg/m3 (9) 5.1 μg/m3 (22) 22.0
 
Jan. 26, 2021, 8 a.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 24.0 ppb (23) N/A 14.3 μg/m3 (14) 5.9 μg/m3 (25) 25.0
 
Jan. 26, 2021, 7 a.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 27.0 ppb (25) N/A 10.5 μg/m3 (10) 5.5 μg/m3 (23) 25.0
 
Jan. 26, 2021, 6 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 27.0 ppb (25) N/A 8.5 μg/m3 (8) 5.1 μg/m3 (22) 25.0
 
Jan. 26, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 7.5 μg/m3 (7) 4.5 μg/m3 (19) 29.0
 
Jan. 26, 2021, 4 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 32.0 ppb (30) N/A 7.4 μg/m3 (7) 4.3 μg/m3 (18) 30.0
 
Jan. 26, 2021, 3 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 34.0 ppb (32) N/A 8.6 μg/m3 (8) 4.0 μg/m3 (17) 32.0
 
Jan. 26, 2021, 2 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 34.0 ppb (32) N/A 8.9 μg/m3 (9) 3.6 μg/m3 (16) 32.0
 
Jan. 26, 2021, 1 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 35.0 ppb (33) N/A 9.1 μg/m3 (9) 3.3 μg/m3 (14) 33.0
 
Jan. 26, 2021, midnight N/A N/A N/A N/A N/A 2.0 ppb (3) 35.0 ppb (33) N/A 9.6 μg/m3 (9) 3.2 μg/m3 (14) 33.0
 
Jan. 25, 2021, 11 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 36.0 ppb (34) N/A 10.5 μg/m3 (10) 2.8 μg/m3 (12) 34.0
 
Jan. 25, 2021, 10 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 36.0 ppb (34) N/A 9.8 μg/m3 (10) 2.4 μg/m3 (10) 34.0
 
Jan. 25, 2021, 9 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 36.0 ppb (34) N/A 12.5 μg/m3 (12) 2.4 μg/m3 (10) 34.0
 
Jan. 25, 2021, 8 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 36.0 ppb (34) N/A 13.1 μg/m3 (13) 2.1 μg/m3 (9) 34.0
 
Jan. 25, 2021, 7 p.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 38.0 ppb (36) N/A 11.3 μg/m3 (11) 1.9 μg/m3 (8) 36.0
 
Jan. 25, 2021, 6 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 38.0 ppb (36) N/A 10.4 μg/m3 (10) 1.9 μg/m3 (8) 36.0
 
Jan. 25, 2021, 5 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 37.0 ppb (35) N/A 11.3 μg/m3 (11) 1.9 μg/m3 (8) 35.0
 
Jan. 25, 2021, 4 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 37.0 ppb (35) N/A 13.3 μg/m3 (13) 2.5 μg/m3 (11) 35.0
 
Jan. 25, 2021, 3 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 35.0 ppb (33) N/A 13.3 μg/m3 (13) 3.4 μg/m3 (15) 33.0
 
Jan. 25, 2021, 2 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 34.0 ppb (32) N/A 14.6 μg/m3 (14) 3.9 μg/m3 (17) 32.0
 
Jan. 25, 2021, 1 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 32.0 ppb (30) N/A 14.7 μg/m3 (14) 4.1 μg/m3 (18) 30.0
 
Jan. 25, 2021, noon N/A N/A N/A N/A N/A 2.0 ppb (3) 30.0 ppb (28) N/A 8.0 μg/m3 (8) 2.4 μg/m3 (10) 28.0
 
Jan. 25, 2021, 11 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 32.0 ppb (30) N/A 5.5 μg/m3 (6) 2.2 μg/m3 (10) 30.0
 
Jan. 25, 2021, 10 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 32.0 ppb (30) N/A 4.1 μg/m3 (4) 2.0 μg/m3 (9) 30.0
 
Jan. 25, 2021, 9 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 33.0 ppb (31) N/A 3.0 μg/m3 (3) 1.8 μg/m3 (8) 31.0
 
Jan. 25, 2021, 8 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 33.0 ppb (31) N/A 4.5 μg/m3 (5) 1.7 μg/m3 (8) 31.0
 
Jan. 25, 2021, 7 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 34.0 ppb (32) N/A 4.2 μg/m3 (4) 1.8 μg/m3 (8) 32.0
 
Jan. 25, 2021, 6 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 35.0 ppb (33) N/A 4.1 μg/m3 (4) 1.9 μg/m3 (8) 33.0
 
Jan. 25, 2021, 5 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 35.0 ppb (33) N/A 4.4 μg/m3 (5) 2.1 μg/m3 (9) 33.0
 
Jan. 25, 2021, 4 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 35.0 ppb (33) N/A 4.1 μg/m3 (4) 1.9 μg/m3 (8) 33.0
 
Jan. 25, 2021, 3 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 36.0 ppb (34) N/A 3.9 μg/m3 (4) 2.0 μg/m3 (9) 34.0
 
Jan. 25, 2021, 2 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 36.0 ppb (34) N/A 5.5 μg/m3 (6) 1.9 μg/m3 (8) 34.0
 
Jan. 25, 2021, 1 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 36.0 ppb (34) N/A 5.7 μg/m3 (6) 1.8 μg/m3 (8) 34.0
 
Jan. 25, 2021, midnight N/A N/A N/A N/A N/A 2.0 ppb (3) 36.0 ppb (34) N/A 4.9 μg/m3 (5) 1.8 μg/m3 (8) 34.0
 
Jan. 24, 2021, 11 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 36.0 ppb (34) N/A 7.2 μg/m3 (7) 1.7 μg/m3 (8) 34.0
 
Jan. 24, 2021, 10 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 37.0 ppb (35) N/A 8.6 μg/m3 (8) 1.9 μg/m3 (8) 35.0
 
Jan. 24, 2021, 9 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 37.0 ppb (35) N/A 10.0 μg/m3 (10) 1.6 μg/m3 (7) 35.0
 
Jan. 24, 2021, 8 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 37.0 ppb (35) N/A 11.6 μg/m3 (11) 1.7 μg/m3 (8) 35.0
 
Jan. 24, 2021, 7 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 38.0 ppb (36) N/A 12.9 μg/m3 (12) 1.7 μg/m3 (8) 36.0
 
Jan. 24, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 11.1 μg/m3 (11) 1.9 μg/m3 (8) 35.0
 
Jan. 24, 2021, 5 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 37.0 ppb (35) N/A 17.4 μg/m3 (17) 2.4 μg/m3 (10) 35.0
 
Jan. 24, 2021, 4 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 37.0 ppb (35) N/A 17.6 μg/m3 (17) 1.9 μg/m3 (8) 35.0
 
Jan. 24, 2021, 3 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 37.0 ppb (35) N/A 11.5 μg/m3 (11) 1.7 μg/m3 (8) 35.0
 
Jan. 24, 2021, 2 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A 8.5 μg/m3 (8) 1.7 μg/m3 (8) 8.0
 
Jan. 24, 2021, 1 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 36.0 ppb (34) N/A 8.3 μg/m3 (8) 1.7 μg/m3 (8) 34.0
 
Jan. 24, 2021, noon N/A N/A N/A N/A N/A 2.0 ppb (3) 35.0 ppb (33) N/A 7.7 μg/m3 (8) 1.6 μg/m3 (7) 33.0
 
Jan. 24, 2021, 11 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 34.0 ppb (32) N/A 7.2 μg/m3 (7) 1.6 μg/m3 (7) 32.0
 
Jan. 24, 2021, 10 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 34.0 ppb (32) N/A 5.4 μg/m3 (5) 1.5 μg/m3 (7) 32.0
 
Jan. 24, 2021, 9 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 35.0 ppb (33) N/A 4.5 μg/m3 (5) 1.5 μg/m3 (7) 33.0
 
Jan. 24, 2021, 8 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 34.0 ppb (32) N/A 6.4 μg/m3 (6) 1.9 μg/m3 (8) 32.0
 
Jan. 24, 2021, 7 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 34.0 ppb (32) N/A 7.7 μg/m3 (8) 2.2 μg/m3 (10) 32.0
 
Jan. 24, 2021, 6 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 34.0 ppb (32) N/A 7.8 μg/m3 (8) 2.4 μg/m3 (10) 32.0
 
Jan. 24, 2021, 5 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 33.0 ppb (31) N/A 8.2 μg/m3 (8) 2.7 μg/m3 (12) 31.0
 
Jan. 24, 2021, 4 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 33.0 ppb (31) N/A 9.1 μg/m3 (9) 2.9 μg/m3 (13) 31.0
 
Jan. 24, 2021, 3 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 32.0 ppb (30) N/A 8.4 μg/m3 (8) 3.1 μg/m3 (13) 30.0
 
Jan. 24, 2021, 2 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 32.0 ppb (30) N/A 10.5 μg/m3 (10) 3.1 μg/m3 (13) 30.0
 
Jan. 24, 2021, 1 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 32.0 ppb (30) N/A 11.1 μg/m3 (11) 3.1 μg/m3 (13) 30.0
 
Jan. 24, 2021, midnight N/A N/A N/A N/A N/A 2.0 ppb (3) 32.0 ppb (30) N/A 13.9 μg/m3 (13) 3.3 μg/m3 (14) 30.0
 
Jan. 23, 2021, 11 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 32.0 ppb (30) N/A 10.7 μg/m3 (10) 3.3 μg/m3 (14) 30.0
 
Jan. 23, 2021, 10 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 32.0 ppb (30) N/A 12.8 μg/m3 (12) 3.6 μg/m3 (16) 30.0
 
Jan. 23, 2021, 9 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 31.0 ppb (29) N/A 15.1 μg/m3 (14) 4.1 μg/m3 (18) 29.0
 
Jan. 23, 2021, 8 p.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 30.0 ppb (28) N/A 15.2 μg/m3 (15) 4.2 μg/m3 (18) 28.0
 
Jan. 23, 2021, 7 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 31.0 ppb (29) N/A 13.7 μg/m3 (13) 3.7 μg/m3 (16) 29.0
 
Jan. 23, 2021, 6 p.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 31.0 ppb (29) N/A 17.3 μg/m3 (17) 4.0 μg/m3 (17) 29.0
 
Jan. 23, 2021, 5 p.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 31.0 ppb (29) N/A 17.2 μg/m3 (16) 4.3 μg/m3 (18) 29.0
 
Jan. 23, 2021, 4 p.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 30.0 ppb (28) N/A 15.4 μg/m3 (15) 4.5 μg/m3 (19) 28.0
 
Jan. 23, 2021, 3 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 30.0 ppb (28) N/A 16.2 μg/m3 (15) 4.4 μg/m3 (19) 28.0
 
Jan. 23, 2021, 2 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 28.0 ppb (26) N/A 14.9 μg/m3 (14) 4.1 μg/m3 (18) 26.0
 
Jan. 23, 2021, 1 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 27.0 ppb (25) N/A 12.8 μg/m3 (12) 3.8 μg/m3 (16) 25.0
 
Jan. 23, 2021, noon N/A N/A N/A N/A N/A 2.0 ppb (3) 25.0 ppb (24) N/A 10.7 μg/m3 (10) 3.7 μg/m3 (16) 24.0
 
Jan. 23, 2021, 11 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 27.0 ppb (25) N/A 8.4 μg/m3 (8) 3.4 μg/m3 (15) 25.0
 
Jan. 23, 2021, 10 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 25.0 ppb (24) N/A 7.6 μg/m3 (8) 3.7 μg/m3 (16) 24.0
 
Jan. 23, 2021, 9 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 24.0 ppb (23) N/A 7.7 μg/m3 (8) 3.9 μg/m3 (17) 23.0
 
Jan. 23, 2021, 8 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 26.0 ppb (25) N/A 5.5 μg/m3 (6) 3.1 μg/m3 (13) 25.0
 
Jan. 23, 2021, 7 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 25.0 ppb (24) N/A 5.6 μg/m3 (6) 3.5 μg/m3 (15) 24.0
 
Jan. 23, 2021, 6 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 26.0 ppb (25) N/A 7.4 μg/m3 (7) 4.9 μg/m3 (21) 25.0
 
Jan. 23, 2021, 5 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 25.0 ppb (24) N/A 8.9 μg/m3 (9) 5.8 μg/m3 (25) 25.0
 
Jan. 23, 2021, 4 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 24.0 ppb (23) N/A 9.8 μg/m3 (10) 5.8 μg/m3 (25) 25.0
 
Jan. 23, 2021, 3 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 22.0 ppb (21) N/A 9.7 μg/m3 (9) 6.4 μg/m3 (27) 27.0
 
Jan. 23, 2021, 2 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 22.0 ppb (21) N/A 10.0 μg/m3 (10) 6.8 μg/m3 (29) 29.0
 
Jan. 23, 2021, 1 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 22.0 ppb (21) N/A 11.5 μg/m3 (11) 7.8 μg/m3 (33) 33.0
 
Jan. 23, 2021, midnight N/A N/A N/A N/A N/A 2.0 ppb (3) 21.0 ppb (20) N/A 12.6 μg/m3 (12) 7.7 μg/m3 (33) 33.0
 
Jan. 22, 2021, 11 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 18.0 ppb (17) N/A 24.2 μg/m3 (23) 16.8 μg/m3 (61) 61.0
 
Jan. 22, 2021, 10 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 17.0 ppb (16) N/A 20.6 μg/m3 (20) 14.2 μg/m3 (56) 56.0
 
Jan. 22, 2021, 9 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 19.0 ppb (18) N/A 19.7 μg/m3 (19) 12.5 μg/m3 (52) 52.0
 
Jan. 22, 2021, 8 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 22.0 ppb (21) N/A 16.7 μg/m3 (16) 8.5 μg/m3 (36) 36.0
 
Jan. 22, 2021, 7 p.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 26.0 ppb (25) N/A 21.5 μg/m3 (20) 11.4 μg/m3 (48) 48.0
 
Jan. 22, 2021, 6 p.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 23.0 ppb (22) N/A 27.6 μg/m3 (26) 14.9 μg/m3 (57) 57.0
 
Jan. 22, 2021, 5 p.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 20.0 ppb (19) N/A 36.6 μg/m3 (34) 18.1 μg/m3 (64) 64.0
 
Jan. 22, 2021, 4 p.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 18.0 ppb (17) N/A 35.2 μg/m3 (33) 18.4 μg/m3 (65) 65.0
 
Jan. 22, 2021, 3 p.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 15.0 ppb (14) N/A 26.3 μg/m3 (25) 17.4 μg/m3 (63) 63.0
 
Jan. 22, 2021, 2 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 13.0 ppb (13) N/A 27.8 μg/m3 (26) 17.1 μg/m3 (62) 62.0
 
Jan. 22, 2021, 1 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 9.0 ppb (9) N/A 23.6 μg/m3 (22) 16.2 μg/m3 (60) 60.0
 
Jan. 22, 2021, noon N/A N/A N/A N/A N/A 2.0 ppb (3) 9.0 ppb (9) N/A 21.6 μg/m3 (20) 15.6 μg/m3 (59) 59.0
 
Jan. 22, 2021, 11 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 5.0 ppb (5) N/A 22.5 μg/m3 (21) 16.5 μg/m3 (61) 61.0
 
Jan. 22, 2021, 10 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 4.0 ppb (4) N/A 26.9 μg/m3 (25) 18.6 μg/m3 (65) 65.0
 
Jan. 22, 2021, 9 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A 24.1 μg/m3 (23) 17.8 μg/m3 (63) 63.0
 
Jan. 22, 2021, 8 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 3.0 ppb (3) N/A 22.4 μg/m3 (21) 16.7 μg/m3 (61) 61.0
 
Jan. 22, 2021, 7 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 6.0 ppb (6) N/A 20.4 μg/m3 (19) 15.4 μg/m3 (58) 58.0
 
Jan. 22, 2021, 6 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 11.0 ppb (11) N/A 19.2 μg/m3 (18) 14.6 μg/m3 (57) 57.0
 
Jan. 22, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A 17.9 μg/m3 (17) 13.7 μg/m3 (55) 55.0
 
Jan. 22, 2021, 4 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 15.0 ppb (14) N/A 16.1 μg/m3 (15) 12.2 μg/m3 (52) 52.0
 
Jan. 22, 2021, 3 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 18.0 ppb (17) N/A 16.0 μg/m3 (15) 11.5 μg/m3 (48) 48.0
 
Jan. 22, 2021, 2 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 17.0 ppb (16) N/A 16.6 μg/m3 (16) 12.2 μg/m3 (52) 52.0
 
Jan. 22, 2021, 1 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 17.0 ppb (16) N/A 16.3 μg/m3 (16) 11.8 μg/m3 (50) 50.0
 
Jan. 22, 2021, midnight N/A N/A N/A N/A N/A 2.0 ppb (3) 18.0 ppb (17) N/A 16.1 μg/m3 (15) 11.7 μg/m3 (49) 49.0
 
Jan. 21, 2021, 11 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 20.0 ppb (19) N/A 15.9 μg/m3 (15) 10.4 μg/m3 (44) 44.0
 
Jan. 21, 2021, 10 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 22.0 ppb (21) N/A 13.0 μg/m3 (13) 7.9 μg/m3 (33) 33.0
 
Jan. 21, 2021, 9 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 24.0 ppb (23) N/A 14.5 μg/m3 (14) 6.7 μg/m3 (28) 28.0
 
Jan. 21, 2021, 8 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 27.0 ppb (25) N/A 13.5 μg/m3 (13) 5.8 μg/m3 (25) 25.0
 
Jan. 21, 2021, 7 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 27.0 ppb (25) N/A 12.1 μg/m3 (12) 5.0 μg/m3 (21) 25.0
 
Jan. 21, 2021, 6 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 28.0 ppb (26) N/A 11.0 μg/m3 (11) 4.0 μg/m3 (17) 26.0
 
Jan. 21, 2021, 5 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 31.0 ppb (29) N/A 12.8 μg/m3 (12) 3.5 μg/m3 (15) 29.0
 
Jan. 21, 2021, 4 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 31.0 ppb (29) N/A 12.7 μg/m3 (12) 3.7 μg/m3 (16) 29.0
 
Jan. 21, 2021, 3 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 29.0 ppb (27) N/A 13.0 μg/m3 (13) 3.9 μg/m3 (17) 27.0
 
Jan. 21, 2021, 2 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 26.0 ppb (25) N/A 14.2 μg/m3 (14) 4.1 μg/m3 (18) 25.0
 
Jan. 21, 2021, 1 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 25.0 ppb (24) N/A 9.3 μg/m3 (9) 3.5 μg/m3 (15) 24.0
 
Jan. 21, 2021, noon N/A N/A N/A N/A N/A 2.0 ppb (3) 26.0 ppb (25) N/A 6.6 μg/m3 (7) 3.2 μg/m3 (14) 25.0
 
Jan. 21, 2021, 11 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 26.0 ppb (25) N/A 6.6 μg/m3 (7) 2.9 μg/m3 (13) 25.0
 
Jan. 21, 2021, 10 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 28.0 ppb (26) N/A 5.4 μg/m3 (5) 2.9 μg/m3 (13) 26.0
 
Jan. 21, 2021, 9 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 28.0 ppb (26) N/A 5.4 μg/m3 (5) 2.7 μg/m3 (12) 26.0
 
Jan. 21, 2021, 8 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 29.0 ppb (27) N/A 3.7 μg/m3 (4) 2.3 μg/m3 (10) 27.0